# Sly Air Pollution Control > Generated by All in One SEO Pro v5.0.4, this is an llms-full.txt file, used by LLMs to index the site. ## Posts ### [Troubleshooting Basics for TubeJet® (Pulse-Jet) Dust Collection Systems](https://www.slyinc.com/blog/troubleshooting-basics-for-tubejet-pulse-jet-dust-collection-systems/) **Published:** March 31, 2022 **Author:** Al Moretti **Content:** While dust collection systems and components are durable, they need proper maintenance to avoid problems down the road. Regular maintenance and thorough troubleshooting can prevent and help fix problems with your dust collector, reducing downtime, cutting costs, and improving productivity. It will also help protect your employees, your community, and the surrounding environment. At Sly, we understand the importance of keeping your dust collector system running properly, and we are here to help. That’s why we put together this blog post to give you some basic tips for troubleshooting your TubeJet® (pulse-jet) dust collector. Although periodic maintenance can avoid most problems before they occur, these tips can help diagnose problems early and keep them from escalating. ## Differential Pressure**![pulsejet](https://www.slyinc.com/wp-content/uploads/2024/08/pulsejet-2.png)** At the heart of any dust collector, troubleshooting starts with checking the system’s differential pressure, or DP. Any deviation from a normal DP indicates a problem somewhere in the system, and this can be used as the starting point for checking the most common problems, from the pickup points to the exhaust fan. Fortunately, you can take some common-sense steps if you get an abnormal reading. DP, typically measured by a Magnehelic gauge connected by tubing to both the clean and dirty sides (the clean air plenum and the filter side) of the dust collector, measures the airflow resistance between these two chambers. The gauge displays the DP in a format referred to as inches of water. ## High Differential Pressure: What to Check High pressure at the [baghouse](https://www.slyinc.com/products/baghouse-manufacturer/) means the pickup points have inadequate pressure. As a result, it will be impossible to get the proper air volume through the dust collector. If you get a high DP reading, don’t panic. There are steps you can take to determine what is causing the high DP reading: - Check the ¼” tubing that connects the gauge to the dust collector. If this tubing is clogged, that could be the reason behind the high DP reading. - Check the system’s ductwork for an excessive accumulation of dust, which can cause a high DP. - Check the hopper to see whether it is filled with dust. If so, this will raise the DP. - Check the airlock to ensure the rotary valve at the dust collector discharge is functioning properly. If the airlock valve is malfunctioning, this will increase the DP. If the ductwork is clean, the hopper is empty, the airlock is clear, all the blast gates are open and the air is flowing freely through the ductwork from the pickup points, then you should inspect the dust collector itself. ### Filter Bags Check the filter bags. Excessive dust buildup on your filters increases resistance, making it harder for air to pass through and causing a high DP reading at the gauge. If dirty filter bags are causing a high DP, then you need to determine whether the bags are being properly cleaned. You should determine whether the compressed air is being maintained at the proper 80 to 90 psi. If not, the lack of compressed air pressure is likely the reason for the dust buildup on the filter bags, which will increase airflow resistance and raise the DP. Other factors can also contribute to a dirty filter bag: - Are the solenoids firing? - Is the timer for the pulse jets sequencing properly? - Are the diaphragms leaking? ### Compressed Air Normally, the sequential timer initiates a compressed air pulsed jet that cleans the filter bags. Compressed air is pulsed into the bag for 1/10th of a second, billowing the bag outward. The negative pressure created then slaps the bag back against the cage. The force of this impact called a “dust cake,” should dislodge the nearly invisible dust from the outside of the bag. ## Low Differential Pressure: What to Check Low DP is caused by lower than optimal air resistance. First, check that the bags are correctly installed. Check to ensure that the bags are not loose (there should be an airtight seal) or that they have not fallen out of the cage. ### Filter Bag Tears Inspect the filter bags for tears, which would cause the compressed air to bypass the filter bag. If this is the case, you will probably notice dust coming out of the fan or exhaust. ### Fan Damper Ensure that the fan is functioning properly. If someone accidentally bumped the fan damper or closed off the damper, this could cause the air output to decrease. For example, if 10,000 CFM is the proper amount of air going into the system, a closed damper might drop that to 5,000 CFM. This would cause a low DP reading and an improperly functioning dust collector system. All components in your dust collector system are designed to operate within a certain CFM, so that means there is a narrow band of operation or a dust collector to operate properly. Any pressure deviation will affect the collection efficiency at the pickup points and any upset in the system will be reflected in the DP. ## Summary Whether higher than normal or lower than normal, differential pressure is the most important indicator for managing, maintaining, and troubleshooting a dust collector system. For more information on dust collector maintenance and troubleshooting read our previous blog post [Troubleshooting Common Dust Collector Problems](https://blog.slyinc.com/dust-collector-problems)., And don’t miss our latest [video on Total Dust Management](https://youtu.be/IaOQcTF2AfA) by one of Sly’s most experienced dust collector experts. Finally, as always, [contact Sly](https://www.slyinc.com/contact/) with any questions about maintaining or troubleshooting your dust collector system, and our experts will be happy to help. For help implementing an effective maintenance program, download and use our [dust collector maintenance checklist](https://info.slyinc.com/maintenance-checklist-for-a-better-baghouse-download-1), put together by our team of experts. For information on Sly’s TubeJet® (pulse-jet) dust collectors, featuring a “no tools required” design, visit our [webpage](https://www.slyinc.com/products/dust-collectors/pulse-jet-collectors/). [Contact Us](https://www.slyinc.com/contact/) [Dust Collection System](https://www.slyinc.com/blog/category/dust-collection-system/) **Categories:** Dust Collection System --- ### [How to Monitor Baghouse Health Through Differential Pressure](https://www.slyinc.com/blog/how-to-monitor-baghouse-health-through-differential-pressure/) **Published:** June 12, 2018 **Author:** p1ws **Content:** Differential pressure measurements provide a reliable metric of [baghouse performance](https://www.slyinc.com/products/baghouse-manufacturer/). Just as a doctor uses a thermometer to check for fever, so too can maintenance personnel use gauges to measure pressure drop across a baghouse. When the differential pressure readings fall too high or too low, it’s a clear indication that it’s time to make adjustments. ## Signs of a “Sick” Baghouse The symptoms of a baghouse in need of attention include: - Differential pressure is too high or too low - Visible dust in stack emissions - The pulse-jet cleaning system must work overtime, increasing compressed air usage - The amount of dust falling into the hopper after a cleaning cycle slows down or stops - Power consumption is lower or higher than normal - Dust is not being collected at pickup points ## What is Differential Pressure? Differential pressure can warn us when the baghouse needs help. It can be as simple as indicating when it’s time to pulse clean filters or more extensive service, like it’s time to replace the filters. Continuously monitoring pressure drop can reveal problems early, when they are faster, easier and cheaper to fix, and helps extend bag life. ![baghouse-filter-bag](https://www.slyinc.com/wp-content/uploads/2024/08/baghouse-filter-bag.jpg)Differential pressure is defined as the pressure drop measured across the tubesheet (the metal plate from which the bags are suspended), from the dirty side of the bags to the clean air plenum. To find this difference in pressure, the lower, clean air pressure inside the bags is subtracted from the higher, dirty air pressure outside the bags (see image). Rapid changes in differential pressure can indicate physical changes in the filters. A sudden drop in differential pressure can indicate that a filter leak or rupture has occurred. A sudden increase in differential pressure can indicate that the cleaning system has stopped functioning or a material discharge device has stopped working correctly or dust particles have been entrained in the filter’s fibers and unable to be removed by the dust cleaning cycle (filters have become blinded). ## It All Comes Down to the Dust Baghouse filters act somewhat like window screens that prevent insects from entering a room. Incoming baghouse air passes through the filter medium, which captures the solid dust particles on the exterior of the filter bag. A seasoned bag refers to a surface of accumulated dust which remains after pulse cleaning (Dust Cake). This layer of dust helps to capture more dust because new dust clings to old dust. In fact, air filtration through the combination of the dust cake and the filter medium provides the highest particulate removal efficiency. However, there’s a practical limit; a baghouse can’t run well when the dust cake is too heavy. ## Why Measure Differential Pressure? Differential pressure is a measure of resistance to air flow across the [filter bags](https://www.slyinc.com/products/fabric-filter-media-options/). As air passes through the dust layer and the filter medium, it loses the dynamic or velocity component of pressure. Eventually, as dust builds up on the bags, there is greater resistance to air flow and the volumetric flow rate decreases. A change in differential pressure can also reveal the condition of the bags, whether they are in good working order, approaching the end of useful life, or blinded and therefore, ready to be replaced. See Table 1, where “w.g.” is the pressure drop measured in inches of water gauge. | **Filter Bag Life Cycle** | **Typical Differential Pressure** | |---|---| | New bags | 0” to 2″ w.g. | | Seasoned bags | 2” to 5″ w.g. | | May be nearing end of life | >6″ w.g. | ## Felted vs. PTFE Membrane Baghouse Filters When newly installed, felted filter bags have the lowest pressure drop because the media has the greatest permeability before seasoning by dust. These bags are not fully efficient until they have accumulated a minimum dust thickness, along with a slightly higher pressure drop. Over time, some dust particles will become entrained in the bag’s fibers so they can’t be removed by the pulse-jet cleaning cycle. In other words, the bags become blinded. After the initial bag conditioning period, or seasoning, baghouse differential pressure should stabilize into a consistent operating range relative to the cleaning cycle, application, and style of equipment. This range can be used to predict the expected differential pressure with future bag changes. In contrast, baghouse filters with a microscopic PTFE membrane rely on surface filtration to remove incoming particles. The PTFE membrane works as the primary filter cake, collecting all of the particles on the surface, so they can’t penetrate the filter fabric, which can lead to reduced airflow, and filter “blinding.” The membrane also makes these bags more efficient and easier to clean. ## Pulse Jet Cleaning During pulse jet cleaning, a reverse flow of clean compressed air puffs a row of bags outwards, dislodging the dust cake on each bag’s surface. The dislodged dust drops into hoppers located beneath the bags. During this cleaning cycle, the bags in the row being pulsed do not inflate all at once, but in a wavelike manner, which enhances cleaning. The bags react to the initial shock of compressed air, followed by a bubble-like expansion that moves along the bag length. In order to reduce re-entrainment of pulsed dust, adjacent rows of bags are not pulsed in sequence. During the cleaning procedure, the baghouse remains online, and filtration continues, with no downtime required. ## Differential Pressure Gauges ![Magnehelic differential pressure gauges](https://www.slyinc.com/wp-content/uploads/2024/08/Magnehelic-differential-pressure-gauges.png)Modern baghouse pressure gauges include Magnehelic® differential pressure gauges (diagram on right), photohelic switch gauges, or solid state differential pressure controllers. Baghouses with Magnehelic differential pressure gauges are cleaned by time sequence and these gauges have no electronic control capabilities. However, Sly’s policy is to include one of these gauges in every baghouse design because they offer a quick, convenient way to check pressure visually. The gauge indicates the air pressure inside the baghouse, and operators should check the gauge regularly and record the pressure manually. ### Photohelic Pressure Gauges ![photohelic gauge](https://www.slyinc.com/wp-content/uploads/2024/08/photohelic-gauge.png)Photohelic switch/gauges combine the function of a Magnehelic differential pressure gauge with low/high pressure switches. Two phototransistor-actuated, double-pole, double throw relays are used to set low and high differential pressure setpoints. Setpoints can be interlocked to provide control of the pulse jet filter bag cleaning system. The advantage of the Photohelic switch/gauge is that it triggers the cleaning system automatically, running it only when needed, based on a preset differential pressure level, which helps reduce operating costs. ### Solid-State Differential Pressure Controller ![solidstate differential controller](https://www.slyinc.com/wp-content/uploads/2024/08/solidstate-differential-controller.jpg)Compact, solid state differential pressure controllers have a digital display rather than an analog dial utilized on the photohelic pressure gauge. These solid-state devices are easily installed and allow for fine control of high and low limits to activate “on-demand” cleaning of baghouse filters. Sly utilizes a module designed to plug into the baghouse control system’s timer board. Solid-state controllers use a 4-20mA signal capability for remote monitoring of pressure differentials. In addition, they send an alarm to notify technicians when the pressure goes outside the preset levels. ## Conclusion Regular logging of baghouse differential pressures is the best way to monitor the performance of your dust filtration system allowing you to take corrective actions sooner and at less expense. If you need help in bringing your baghouse back to health, Sly, LLC is always ready to help. ## For More Information With 150 years of dust collecting expertise, Sly can help you ensure your baghouse is running at maximum efficiency. [Contact us](https://www.slyinc.com/contact/) for more information about measuring and logging differential pressure to maintain and protect your baghouse’s performance. [Download the Guide Now!](https://www.slyinc.com/resources/white-papers/guide-how-to-design-a-dust-collection-system/) [Baghouse](https://www.slyinc.com/blog/category/baghouse/), [Baghouse System](https://www.slyinc.com/blog/category/baghouse-system/) **Categories:** Baghouse, Baghouse System --- ### [What is a Baghouse?](https://www.slyinc.com/blog/what-is-a-baghouse/) **Published:** September 9, 2020 **Author:** p1ws **Content:** ## What Is a Baghouse? A Complete Guide to Industrial Baghouse Dust Collectors Industrial facilities generate dust during nearly every material handling and processing operation. Whether you’re moving powders, grinding metals, handling grain, or processing chemicals, airborne particulate can reduce product quality, create safety concerns, increase maintenance costs, and impact regulatory compliance. A **baghouse**, also known as a **[baghouse dust collector](https://www.slyinc.com/products/dust-collectors/)** or **[fabric filter](/products/dry-dust-collector-filter-bags/)**, is one of the most effective solutions for removing dust from industrial air streams. By filtering contaminated air through specially designed fabric filter bags, baghouses routinely achieve collection efficiencies of **99% or greater** while supporting cleaner operations, improved product recovery, and long-term equipment reliability. In this guide, we’ll explain what a baghouse is, how it works, the different types available, where they’re commonly used, and how to determine whether a baghouse is the right dust collection solution for your facility. ## What is a Baghouse? A [**baghouse** is an industrial air pollution control system](https://www.slyinc.com/products/baghouse-manufacturer/) that removes dust and particulate matter from process air using fabric filter bags. Dust-laden air enters the collector, passes through the filter media, and exits as clean air while the captured dust remains on the surface of the filter bags until it is removed during the cleaning cycle. [Baghouses are commonly used in](https://www.youtube.com/watch?v=iYlxZZfmuI8): - [Food processing](https://www.slyinc.com/industries/food-processing/) - [Chemical manufacturing](https://www.slyinc.com/industries/chemicals/) - [Mining](https://www.slyinc.com/industries/mining-minerals/) - Foundries - [Cement production](https://www.slyinc.com/industries/cement-asphalt/) - Woodworking - [Pharmaceuticals](https://www.slyinc.com/industries/pharmaceuticals/) - Agriculture - [Battery manufacturing](https://www.slyinc.com/industries/lithium/) - Recycling operations Because they can efficiently capture fine particulates while handling large air volumes, baghouses have become one of the most widely used industrial dust collection technologies.[![Baghouse](https://www.slyinc.com/wp-content/uploads/2024/08/Baghouse.jpg)](https://www.slyinc.com/products/dust-collectors/pulse-jet-collectors/) ## How Does a Baghouse Work? Although baghouses come in several designs, they all use the same basic filtration process. ### 1. Dust-Laden Air Enters the Collector Process air carrying dust particles enters the baghouse through ductwork connected to production equipment. ### 2. Air Passes Through Filter Bags As air flows through the fabric filter bags, dust particles become trapped on the filter media surface while clean air continues through the bag. ### 3. Dust Cake Forms Over time, a thin layer of dust, called a **dust cake**, develops on the outside of the filter bags. In many applications, this dust layer actually improves filtration efficiency by capturing even finer particles. ### 4. Filter Bags Are Cleaned To maintain airflow, operators must periodically remove the accumulated dust. Depending on the baghouse design, cleaning may occur using: - Pulse-jet compressed air - Reverse airflow - Mechanical shaking ### 5. Dust Is Collected The dislodged dust falls into the hopper below the collector where it can be disposed of or recovered for reuse, depending on the application. ## Main Components of a Baghouse While configurations vary by application, most industrial baghouses include the following components: ### Filter Bags The heart of the system. Fabric bags capture airborne particulate while allowing clean air to pass through. ### Filter Cages Metal cages support the filter bags and prevent collapse during operation. ### Dirty Air Plenum The chamber where incoming dust-laden air enters before filtration. ### Clean Air Plenum The section where filtered air collects before being exhausted from the system. ### Cleaning System Pulse-jet valves, reverse-air systems, or mechanical shakers remove accumulated dust from the filter bags. ### Hopper The lower portion of the collector where removed dust accumulates before discharge. ### Fan and Ductwork Move air through the dust collection system and maintain proper airflow. ## Cartridge Collectors: Another Type of Dry Dust Collector Baghouses can also handle smaller particulate and lighter dust loads, but you may want to use a cartridge collector in those cases. Cartridge collectors are another type of dry dust collector that use high-efficiency filter media cartridges instead of bags. Cartridge collectors typically come in vertical or horizontal cartridge designs. With side cartridge removal, low headroom requirements, and excellent energy savings, cartridge filters can handle many industrial processes to control dust emissions. The following matrix shows when to choose a cartridge collector over a baghouse. | **Condition** | **Baghouse** | **Cartridge** | |---|---|---| | High temperature applications | **✓** | | | Sticky or wet particulate | **✓** | | | Dry dust | | **✓** | | Light dust load | | **✓** | | Heavy dust load | **✓** | | | Small particulate | | **✓** | | Large particulate | **✓** | | ## Industries That Commonly Use Baghouses Baghouses are found across nearly every industrial sector that generates airborne particulate. Common [industries](/industries/) include: - [Cement and concrete production](https://www.slyinc.com/industries/cement-asphalt/) - [Food and ingredient processing](https://www.slyinc.com/industries/food-processing/) - [Pharmaceutical manufacturing](https://www.slyinc.com/industries/pharmaceuticals/) - [Chemical processing](https://www.slyinc.com/industries/chemicals/) - Foundries and metalworking - [Mining and minerals](https://www.slyinc.com/industries/mining-minerals/) - Wood products - Grain handling - Recycling facilities - [Battery manufacturing](https://www.slyinc.com/industries/lithium/) - Industrial processing plants Because every dust stream behaves differently, baghouse systems are typically engineered around each facility’s specific material characteristics and production requirements. ## Benefits of Baghouse Dust Collectors A properly designed baghouse offers several advantages: ### Excellent Dust Collection Efficiency Many systems achieve filtration efficiencies exceeding **99%**, helping facilities maintain cleaner air and reduce emissions. ### Reliable Continuous Operation Modern pulse-jet baghouses clean filter bags while the collector remains in service, minimizing downtime. ### Handles Challenging Dust Baghouses are well suited for abrasive materials, large dust volumes, and elevated operating temperatures. ### Supports Regulatory Compliance Effective particulate collection helps facilities meet workplace safety and environmental requirements. ### Product Recovery In many manufacturing processes, captured material can be recovered and returned to production, reducing waste. ### Long Equipment Life Properly selected filter media and routine maintenance can provide years of dependable operation. --- ## How to Choose the Right Baghouse No two dust collection applications are exactly alike. When evaluating a baghouse system, engineers typically consider: - Dust characteristics - Particle size distribution - Moisture content - Operating temperature - Required airflow (CFM) - Air-to-cloth ratio - Explosion protection requirements - Filter media selection - Available installation space - Maintenance accessibility Selecting the correct collector requires balancing filtration efficiency, operating costs, maintenance requirements, and long-term system reliability. --- ## Frequently Asked Questions ### What is the purpose of a baghouse? A baghouse removes airborne dust and particulate from industrial process air using fabric filter bags, helping improve air quality, protect equipment, recover valuable product, and support regulatory compliance. ### How efficient is a baghouse? Many properly designed baghouse systems achieve dust collection efficiencies of **99% or greater**, depending on the application and filter media. ### What is the difference between a baghouse and a dust collector? A baghouse is a type of dust collector that uses fabric filter bags. Other dust collectors may use cartridges, cyclones, wet scrubbers, or electrostatic precipitation depending on the application. ### How often do baghouse filter bags need to be replaced? Filter bag life varies depending on the dust type, operating temperature, cleaning frequency, and maintenance practices. In many industrial applications, filter bags can last several years before replacement is necessary. ### What industries use baghouses? Baghouses are widely used in food processing, chemical manufacturing, mining, cement production, metalworking, agriculture, recycling, pharmaceuticals, and many other industrial applications. ### Can a baghouse handle high-temperature applications? Yes. With the proper filter media, many baghouse systems are designed to operate in elevated-temperature environments that exceed the capabilities of many cartridge collectors. ### Does every facility need the same type of baghouse? No. The best baghouse depends on the material being collected, airflow requirements, operating conditions, and available space. Most systems are engineered specifically for the application. --- ## Partner with Sly for Industrial Dust Collection Solutions Choosing the right dust collection system goes beyond selecting equipment—it requires understanding your process, your material, and your long-term operational goals. For more than 145 years, **Sly Inc.** has helped manufacturers solve challenging dust collection applications with engineered baghouse systems designed for performance, reliability, and long service life. Whether you’re designing a new system or upgrading an existing collector, our team can help identify the best solution for your operation. **Ready to discuss your application?** Contact Sly today to [speak with one of our dust collection specialists](/contact/). [Download Dry Dust Collection Handbook](https://www.slyinc.com/resources/white-papers/dry-dust-collection-handbook/) [Baghouse](https://www.slyinc.com/blog/category/baghouse/), [Cartridge Filters](https://www.slyinc.com/blog/category/cartridge-filters/), [Dry Dust Collector](https://www.slyinc.com/blog/category/dry-dust-collector/) **Categories:** Baghouse, Cartridge Filters, Dry Dust Collector --- ### [The Complete Baghouse Maintenance Guide & Checklist](https://www.slyinc.com/blog/baghouse-maintenance-checklist-guide/) **Published:** April 10, 2026 **Author:** Al Moretti **Excerpt:** Unlock baghouse bliss! Use our comprehensive baghouse maintenance checklist for peak performance, safety & compliance. **Content:** ## Why a Maintained Baghouse is a Productive Baghouse A **baghouse maintenance checklist** ensures your dust collection system runs efficiently, safely, and in compliance with environmental regulations. Without regular maintenance, you risk costly downtime, reduced performance, and potential safety hazards. **Quick Reference: Essential Baghouse Maintenance Tasks** | **Frequency** | **Key Tasks** | |---|---| | **Daily** | Monitor differential pressure (3-6″ w.c.), check exhaust stack for visible emissions, verify hopper discharge, listen to cleaning cycle | | **Weekly** | Inspect cleaning sequence and valves, check fan components and hoses, blow out differential pressure gauge lines | | **Monthly** | Check bag tension (shaker/reverse-air), inspect dampers and timer board, examine fan for corrosion | | **Quarterly** | Inspect door gaskets, thoroughly check filter bags and cages, examine ducts for dust buildup | | **Annual** | Inspect hoppers for wear, check all welds and bolts, assess structural integrity and corrosion | Your baghouse is the workhorse of your air pollution control system, capturing dust, ensuring compliance, and protecting worker health. When maintenance is neglected, problems compound quickly. **The stakes are high.** Poor maintenance leads to sluggish performance, unexpected breakdowns, and costly emergency repairs. A malfunctioning baghouse poses serious health risks and may result in EPA fines if emission standards aren’t met. For context on how dust collection fits into broader air quality management, see the background information on [industrial dust collection](https://en.wikipedia.org/wiki/Dust_collection_system). The good news? A routine inspection and maintenance program positively impacts equipment performance and extends its life. Regular maintenance reduces energy costs, prevents disruptions, and helps avoid massive, difficult cleanouts. This comprehensive guide breaks down exactly what you need to inspect, when to inspect it, and how to develop a maintenance program that keeps your baghouse running at peak efficiency. ![Infographic showing the top 5 benefits of a proactive baghouse maintenance program: 1) Reduced Energy Costs - properly maintained systems consume less power, 2) Extended Equipment Lifespan - routine care prevents premature failure, 3) Environmental Compliance - consistent monitoring ensures emission standards are met, 4) Minimizing Downtime - scheduled maintenance prevents unexpected breakdowns, 5) Improved Safety - regular inspections identify hazards before they become emergencies - baghouse maintenance checklist infographic ](https://images.bannerbear.com/direct/4mGpW3zwpg0ZK0AxQw/requests/000/121/916/056/BjdZ0l7VAYAxbAkoQ3Kn1DLqe/864fa65fc7f0737f865e559129440f474dea79dc.jpg "Infographic showing the top 5 benefits of a proactive baghouse maintenance program: 1) Reduced Energy Costs - properly maintained systems consume less power, 2) Extended Equipment Lifespan - routine care prevents premature failure, 3) Environmental Compliance - consistent monitoring ensures emission standards are met, 4) Minimizing Downtime - scheduled maintenance prevents unexpected breakdowns, 5) Improved Safety - regular inspections identify hazards before they become emergencies - baghouse maintenance checklist infographic ") ## Key Indicators Your Baghouse Needs Immediate Maintenance Baghouse systems are the unsung heroes of air purification. Like any critical machinery, they show signs when something is wrong. Interpreting these signals is crucial for timely intervention and preventing minor issues from becoming major headaches. So, what are the key indicators that suggest your baghouse requires immediate maintenance? We’re looking for anything out of the ordinary: - **Visible emissions or dust plumes:** This is perhaps the most glaring red flag. If you see dust escaping from your exhaust stack, it indicates a breach, such as a broken filter bag or tubesheet issue. This signifies poor filtration, potential environmental compliance violations, and health risks. - **Unusual noises:** A healthy baghouse operates with a predictable hum. Any new grinding, squealing, clunking, or excessive pulsing sounds can point to problems with fans, cleaning mechanisms, rotary airlock valves, or other moving parts. - **Abnormal pressure readings:** We’ll dive deeper into differential pressure in a moment, but significant deviations from your normal operating range are a critical warning sign. - **Reduced airflow at pickup points:** If your dust collection hoods aren’t capturing dust effectively, it could indicate a blockage in the ductwork, a fan issue, or severely clogged filter bags. - **Signs of corrosion:** Rust or pitting on the baghouse exterior or internal components can compromise structural integrity and lead to leaks or failures. This is especially concerning in environments with corrosive dusts or high moisture. - **Dust accumulation in ductwork:** While ductwork is designed to transport dust, excessive buildup indicates insufficient airflow velocity, which can lead to blockages, increased pressure drop, and reduced collection efficiency. These signs are often your first clue that something needs attention, and ignoring them can lead to significant issues, including those outlined in our guide on [6 Signs of an Unsafe Dust Collection System](https://www.slyinc.com/blog/6-signs-of-an-unsafe-dust-collection-system/). ### Monitoring Differential Pressure for Baghouse Maintenance Differential pressure (DP) is like the pulse of your baghouse – it tells us a lot about its health. It’s the measurement of the pressure difference between the dirty air inlet side and the clean air outlet side of your filter bags. This reading indicates the resistance to airflow through the filter media, primarily caused by the accumulated dust cake on the bags. **Why is it a key health indicator?**A rising differential pressure typically means more dust is accumulating on the filter bags, making it harder for air to pass through. This is normal to a certain extent, as a dust cake is necessary for efficient filtration. However, if the DP rises too high, it signals that the bags are becoming excessively clogged or “blinded,” and the cleaning system isn’t effectively removing the dust. The normal operating range for a baghouse’s differential pressure is typically between 3″ – 6″ of water column (w.c.). This range can vary based on your specific baghouse design, application, and filter media. We always recommend consulting your manufacturer’s specifications for precise targets. **What causes deviations?** - **High DP:** Can be caused by an excessive dust cake (indicating a cleaning system malfunction or insufficient cleaning frequency), blinding of the filter media (often due to moisture or improper dust characteristics), or even an overload of dust in the system. - **Low DP:** Conversely, an unusually low DP can be a sign of trouble, too. It might indicate a major leak in the system, such as a broken filter bag, a hole in the tubesheet, or a bypass damper stuck open, allowing dirty air to bypass the filters entirely. Regularly monitoring and logging your differential pressure readings is one of the simplest yet most effective ways to track your baghouse’s performance over time. Deviations from the norm can alert us to problems before they become critical. For an even deeper dive into this vital metric, explore [How to Monitor Baghouse Health Through Differential Pressure](https://www.slyinc.com/blog/how-to-monitor-baghouse-health-through-differential-pressure/). ## The Ultimate Baghouse Maintenance Checklist by Frequency Adhering to a comprehensive **baghouse maintenance checklist** is paramount for the longevity and optimal performance of your dust collection system. Think of it as a health plan for your baghouse, with routine check-ups and preventative care designed to keep it in top shape. While many maintenance tasks are universal, the specifics of your baghouse’s design – whether it’s a pulse-jet, reverse-air, or shaker system – will influence your checklist. Each type has unique components and cleaning mechanisms that require custom attention. For more insights on keeping your system running smoothly, check out our resources on [Dust Collector Maintenance](https://www.slyinc.com/blog/category/dust-collector-maintenance/). ### Your Daily Baghouse Maintenance Checklist Our daily checks are quick, visual inspections and readings that give us an immediate snapshot of the baghouse’s health. These are your first line of defense against brewing problems. - **Check differential pressure:** Record the DP reading. Is it within the normal operating range (typically 3-6″ w.c.)? Is it consistently trending upward or downward? - **Inspect exhaust stack for visible emissions:** Look for any dust plumes or opacity. This is a critical indicator of bag failure. - **Monitor hopper discharge device:** Ensure the dust is flowing freely from the hopper and that the discharge mechanism (e.g., rotary airlock, screw conveyor) is operating without issues. We want to avoid dust bridging or buildup. - **Check compressed air pressure:** For pulse-jet systems, confirm that the compressed air supply is at the manufacturer’s recommended pressure. Ensuring the proper supply pressure is critical for effective bag cleaning. - **Listen for cleaning cycle operation:** For all cleaning systems, listen to ensure the cleaning sequence is engaging correctly and that all valves are firing as expected (for pulse-jet) or that the shaker/reverse-air mechanisms are operating smoothly. **Essential Daily Monitoring Tools:** - Pressure gauge (manometer, Magnehelic®, Photohelic® Gauge) - Opacity monitor (if installed) - Visual inspection (our own two eyes!) ### Weekly & Monthly Checks As we move to weekly and monthly inspections, we start to look a little deeper, ensuring the operational components are functioning correctly and catching wear before it causes a breakdown. **Weekly Checks:** - **Check cleaning sequence:** Verify that the cleaning system (pulse-jet, reverse-air, or shaker) is cycling through all compartments or rows of bags in the correct sequence and at the appropriate intervals. Determine that all valves seat properly, preventing air leakage. - **Inspect fan and drive components:** Visually check the fan motor and fan drive components for any signs of wear, unusual vibrations, or excessive heat. Ensure belts (if applicable) are taut and in good condition. - **Check hoses and air lines:** Inspect all hoses, connections, and air lines leading to the baghouse, particularly for pulse-jet systems. Look for leaks, cracks, or signs of wear that could compromise compressed air delivery. - **Blow out gauge lines:** For differential pressure gauges, periodically blow out the lines to prevent dust from plugging them and affecting the accuracy of readings. **Monthly Checks:**Our monthly checks involve more detailed inspections of critical components, ensuring they are operating efficiently and catching potential issues early. For a deeper dive into monthly tasks, check out [Your Monthly Baghouse Maintenance Checklist](https://www.slyinc.com/blog/avoiding-costly-baghouse-repairs-dust-collector-preventative-maintenance-checklist/). - **Spot check bag tension (shaker/reverse air):** For shaker and reverse-air baghouses, visually check a few bags to ensure they are properly tensioned. Loose bags can abrade, while overly tight bags can stress the fabric. - **Inspect damper operation:** Check all damper operations, including bypass and isolation dampers. Ensure they open and close fully and seat properly when required. - **Check timer board:** For pulse-jet systems, inspect the timer board to ensure the cleaning sequence is programmed correctly and functioning as intended. - **Inspect solenoid and diaphragm valves:** Monitor the solenoid and specifically diaphragm valves for pulse-jet systems to ensure they are firing properly and not sticking. Listen for consistent operation. Air leaks from solenoids indicate a stuck valve. Air leaks from a diaphragm valve are typically from a torn diaphragm. Both will bleed down the compressed cleaning air in the manifold. - **Check fan for corrosion:** Inspect the fan blades and housing for any signs of corrosion or material buildup, which can lead to imbalance and reduced efficiency. Check fan drive components for wear. ### Quarterly & Annual Inspections These less frequent, but more thorough, inspections are crucial for assessing the overall health and structural integrity of your baghouse. They often require more downtime and can be planned during scheduled shutdowns. **Quarterly Checks:** - **Inspect door gaskets and seals:** Thoroughly inspect all door gaskets and seals for wear, cracks, or hardening. Damaged seals can lead to air leaks, reducing system efficiency and potentially allowing dust to escape. - **Confirm inlet temperature:** Verify that the baghouse inlet temperature is within the manufacturer’s recommended range for your filter media. Excessive temperatures can damage bags, while too low can lead to condensation and blinding. - **Thorough filter bag and cage inspection:** This is a critical step. We need to perform thorough inspections of all filter bags and cages. Check for wear, tears, holes, and proper seating. Spot check for bag leaks and holes using a leak detection test (e.g., fluorescent leak detection powder). This helps us identify and replace damaged bags before they cause significant emissions. For more on leak detection, see [Detecting Leaks in Your Baghouse System Through Dye Testing](https://www.slyinc.com/blog/detecting-leaks-in-your-baghouse-system-through-dye-testing/). - **Check ducts for dust build-up:** Inspect the ductwork for any significant dust accumulation. Excessive buildup can impede airflow, increase pressure drop, and reduce capture velocity at pickup points. - **Observe damper valves for proper seating:** If applicable, observe the damper valves to ensure they seat properly, preventing air bypass. **Annual Checks:**Our annual inspections are the most comprehensive, often requiring a full system shutdown to access internal components and assess structural integrity. - **Inspect internal hoppers for wear:** Thoroughly inspect internal hoppers for wear, abrasion, or corrosion, especially the inlet diffuser and areas where dust impacts the walls. - **Check all welds and bolts:** Inspect all structural welds and bolts throughout the baghouse structure for signs of cracking, corrosion, or loosening. - **Inspect structure for corrosion:** Conduct a detailed inspection of the entire baghouse structure for any signs of corrosion, particularly in areas prone to moisture or chemical exposure. - **Inspect internal baffle plate:** If your baghouse has an internal baffle plate, inspect it for wear, abrasion, or damage from incoming dust-laden air. ## How to Build a Preventive Baghouse Maintenance Program Implementing a robust baghouse maintenance plan is a strategic approach to safeguarding your investment, ensuring compliance, and optimizing operational efficiency. First, we recommend tailoring a maintenance program to your specific dust collection system. No two baghouses are exactly alike, and your plan should reflect your unique operating conditions, dust characteristics, and system design. This includes creating detailed inspection logs for your specific baghouse model. **Record-keeping and logs:** This is where the rubber meets the road. Consistent and accurate record-keeping is invaluable. Logging daily differential pressure, noting observations from inspections, and tracking all maintenance activities – from bag replacements to valve repairs – provides a historical record. This data allows us to: - Identify trends and predict future maintenance needs. - Troubleshoot recurring issues more effectively. - Justify budget requests for parts or upgrades. - Demonstrate compliance with regulatory bodies. **The importance of training:** A maintenance plan is only as good as the people executing it. Proper training plays a crucial role in ensuring baghouse operation and maintenance are carried out effectively and safely. Your maintenance staff should be thoroughly trained on your specific plant’s baghouse dust collection and ventilation systems, including: - Understanding the system’s operational principles. - Recognizing warning signs and troubleshooting common issues. - Safe lockout/tagout procedures. - Proper inspection techniques and use of tools. - The importance of record-keeping. **Proper start-up procedures for new bags:** One often-overlooked aspect of baghouse maintenance is the proper start-up, or “seasoning,” of new filter bags. This initial conditioning is critical for developing a stable dust cake, which is essential for optimal filtration efficiency and extending bag life. We’ll dig deeper into this shortly, but remember, getting this right from the start can prevent premature bag failure and blinding. For detailed guidance, refer to [How to Properly Start Up Your Dust Collector or Baghouse](https://www.slyinc.com/blog/how-to-properly-start-up-your-dust-collector-or-baghouse/). ### Filter Bag Inspection and Replacement The filter bags are the heart of your baghouse, doing the heavy lifting of dust capture. Their condition directly impacts your system’s efficiency and emissions. Therefore, procedures for inspecting and maintaining the filter bags themselves are paramount. **Procedures for inspecting bags:** - **Visual Inspection:** Regularly inspect bags for visible wear, tears, holes, or abrasions. Look for discoloration or shiny spots that might indicate localized wear or dust impingement. - **Proper Seating:** Ensure each bag is properly seated in the tubesheet and secured by its cage (for pulse-jet) or tensioning mechanism (for shaker/reverse-air). Improper seating can lead to bypass air and premature wear. - **Leak Detection:** Use methods like fluorescent leak detection powder during a shutdown to pinpoint even tiny leaks or improperly seated bags. This powder is introduced into the dirty air stream, and a UV light reveals where it has passed through. **When to clean vs. replace:** This is a common question. While cleaning can extend bag life, there comes a point when replacement is necessary. - **Cleaning:** Bags can often be cleaned to restore permeability, especially if they are merely loaded with dust. However, aggressive cleaning can damage the filter media. - **Replacement:** Bags should be replaced when they show signs of significant wear, tears, holes, or when they are “blinded” (permanently clogged) and no longer respond to cleaning, resulting in persistently high differential pressure or visible emissions. We typically replace bags in complete sets to maintain consistent performance across the system. For a comprehensive guide, see [Baghouse Dust Collector Filters Ultimate Guide](https://www.slyinc.com/blog/baghouse-dust-collector-filters-ultimate-guide/), and for reasons to replace, read [3 Reasons to Replace Your Dust Collector Filter Bags](https://www.slyinc.com/blog/3-reasons-to-replace-your-dust-collector-filter-bags/). ### Maintaining Auxiliary Equipment A baghouse isn’t just about the bags; it’s a complex system supported by various auxiliary components that all need attention. Neglecting these can undermine the performance of even the most well-maintained filter bags. - **Fans and blowers:** These are the lungs of your system, creating the airflow needed to draw dust-laden air into the baghouse. Best practices include: - Regularly checking for unusual noises or vibrations. - Inspecting fan blades for wear, corrosion, or material buildup that can cause imbalance and reduce efficiency. - Checking motor bearings for proper lubrication and wear. - Ensuring drive belts are correctly tensioned and free from cracks or fraying. - **Hoppers and discharge devices:** The hopper collects the dust, and the discharge device (like a rotary airlock valve or screw conveyor) removes it from the system. - Inspect hoppers for dust bridging or buildup, which can block discharge and stress the system. - Check discharge devices for wear, proper sealing, and smooth operation. Any leaks here can draw in ambient air, affecting system performance. - **Ductwork inspection:** The ductwork transports dust from the source to the baghouse. - Periodically inspect for dust accumulation, especially in horizontal runs or elbows. Standard practice suggests maintaining an airstream velocity of at least 3500 feet per minute (fpm) to prevent dust from settling. - Look for physical damage, leaks, or corrosion that can reduce airflow or allow dust to escape. - **Dampers:** These control airflow within the system. Ensure they open, close, and seal properly. Malfunctioning dampers can lead to imbalanced airflow or bypass. - **Rotary airlocks:** If your system uses rotary airlock valves for continuous dust discharge, inspect their seals and internal components for wear. Worn airlocks can leak air, reducing the negative pressure in the baghouse. All these components are crucial, and we offer a range of [replacement parts](https://www.slyinc.com/products/dust-collectors/replacement-parts/) to keep your entire system functioning optimally. ## Frequently Asked Questions about Baghouse Maintenance ### How do cleaning systems (pulse-jet, reverse air, shaker) affect maintenance? The type of cleaning system your baghouse employs significantly influences the specific maintenance procedures and their frequency. Each system has unique components that require specialized attention. - **Pulse-jet baghouses:** These systems use short bursts of compressed air to dislodge dust from the filter bags. - **Maintenance focus:** Our primary focus here is on the compressed air system’s components, including solenoid valves and diaphragm valves. We need to ensure these valves are firing correctly, quickly, and consistently. We inspect them for wear, sticking, or leaks. Maintaining the quality of your compressed air (dry and oil-free) is vital to prevent moisture and oil from blinding filter bags and damaging valve components. - **Internal Link:** For more details, explore [Pulse Jet Filter Cleaning](https://www.slyinc.com/blog/pulse-jet-filter-cleaning/). - **Reverse-air baghouses:** These systems use a reverse flow of low-pressure air to inflate and collapse the bags, dislodging dust. - **Maintenance focus:** Key maintenance areas include checking bag tensioning (as bags can stretch over time), inspecting reverse-air dampers for proper operation, and monitoring the reverse-air fan or blower. - **Shaker baghouses:** These systems use a mechanical shaking mechanism to dislodge dust from the bags. - **Maintenance focus:** The emphasis is on the mechanical components – motors, shafts, bearings, and linkages – that create the shaking motion. We inspect these for wear, proper lubrication, and alignment, and ensure bags are correctly tensioned to allow for effective shaking without abrasion. Understanding your specific cleaning system is the first step to creating an effective maintenance schedule. ### Why is a “dust cake” important for new filter bags? When you install new filter bags, they are clean and highly permeable. While this might sound ideal, a “virgin” bag isn’t as efficient at capturing very fine particles as a bag that has been properly conditioned. This is where the “dust cake” comes in. - **Function of a dust cake:** A dust cake is the porous layer of collected particulate that develops on the surface of the filter media during the initial period of operation. This dust layer acts as a secondary filter, dramatically increasing the bag’s efficiency, especially for sub-micron particles. Without it, fine dust can “bleed through” the new filter media. - **Seasoning/conditioning new bags:** This critical start-up procedure involves gradually introducing dust-laden air to new bags, often by running the system at reduced airflow (e.g., partially closing fan dampers) and delaying the cleaning cycle. This allows a stable, permeable dust cake to form gently, rather than being forced onto the bags, which could lead to blinding. - **Preventing blinding:** Blinding occurs when fine particles, moisture, or oil permanently clog the pores of the filter media, making it impenetrable to air. Proper seasoning prevents this by building a controlled dust cake. - **Extending bag life:** A well-formed dust cake protects the filter media from direct impingement by abrasive particles, extending the lifespan of your expensive filter bags. The dust cake is your baghouse’s secret weapon for high-efficiency filtration. Neglecting proper seasoning can lead to poor performance from day one and significantly shorten the life of your bags. For more information, check out [A Deep Dive into Filter Bags for Dust Collection Systems](https://www.slyinc.com/blog/a-deep-dive-into-filter-bags-for-dust-collection-systems/). ### How does maintenance ensure environmental and safety compliance? Proper baghouse maintenance is not just about keeping your equipment running; it’s fundamental to ensuring environmental compliance and safeguarding the health and safety of your workforce. - **Meeting EPA emission limits:** Our baghouses are designed to capture dust and particulate matter, preventing it from being released into the atmosphere. Regular maintenance ensures that the system operates at its designed efficiency, consistently meeting or exceeding EPA emission limits. An improperly functioning system can lead to violations and monetary fines from environmental agencies. - **Preventing visible emissions:** Visible emissions from the stack are a clear sign of a problem, usually a broken bag. Promptly addressing these issues through diligent maintenance ensures we stay within regulatory limits and avoid public scrutiny. - **NFPA standards for combustible dust:** For processes involving combustible dust, proper baghouse maintenance is a critical component of explosion prevention and compliance with NFPA (National Fire Protection Association) standards. This includes regular cleaning to prevent dust accumulation, inspecting components for potential ignition sources, and ensuring safety devices (like explosion vents) are functional. Our article on [How to Ensure NFPA and OSHA Compliance in Your Dust Collection System](https://www.slyinc.com/blog/how-to-ensure-nfpa-and-osha-compliance-in-your-dust-collection-system/) provides more insights. - **Worker health and safety:** Dust and particulate matter can pose significant health risks, including respiratory illnesses and skin irritation. A well-maintained baghouse effectively captures these hazards, protecting everyone in the vicinity. Neglecting maintenance means exposing workers to unsafe air quality, which can lead to OSHA violations and serious health consequences. Cleaning a neglected baghouse is not just dirty; it’s a health and safety challenge. Proactive maintenance minimizes these risks. - **Avoiding fines:** Beyond environmental penalties, safety lapses due to poor maintenance can result in significant fines and legal liabilities. A robust **baghouse maintenance checklist** helps us stay proactive and compliant. A carefully maintained baghouse is a testament to our commitment to responsible industrial operations, protecting both our people and our planet. ## Conclusion: Achieve Peak Performance with Proactive Maintenance We’ve journeyed through the intricate world of baghouse maintenance, exploring everything from daily checks to annual overhauls, the nuances of different cleaning systems, and the critical role of the humble dust cake. The message is clear: proactive maintenance is not merely a task; it’s an investment that pays dividends in operational efficiency, cost savings, and unparalleled peace of mind. By diligently following a comprehensive **baghouse maintenance checklist**, we ensure our systems run at peak performance, capturing dust effectively, protecting our workforce, and safeguarding our environment. This proactive approach prevents unexpected breakdowns, extends the lifespan of our equipment, and ultimately contributes to a more productive and compliant operation. For over a century, Sly, LLC has pioneered air pollution control, providing robust and reliable [dust collectors](https://www.slyinc.com/products/dust-collectors/) designed for longevity and peak performance. Our commitment is to deliver no-compromise solutions for the cleanest air possible, and we believe that a well-maintained system is the cornerstone of achieving that goal. Accept the power of a proactive maintenance program, and experience the true bliss of a perfectly performing baghouse. **Categories:** Dust Collector Maintenance --- ### [The Complete Guide to Safest Dust Collection for Sticky Chemical Dust](https://www.slyinc.com/blog/the-complete-guide-to-safest-dust-collection-for-sticky-chemical-dust/) **Published:** September 14, 2026 **Author:** Al Moretti **Excerpt:** Discover what is the safest dust collection for sticky chemical dust with wet scrubbers and specialized dry systems that prevent blinding and explosion risks. **Content:** Dry, free-flowing dusts like sand or fly ash are usually predictable. They move through ductwork, form a permeable dust cake, and release during pulse-jet cleaning. Sticky chemical dust behaves differently. It can blind filters, reduce capture airflow, and create fire, explosion, and exposure risks. ### The Physics of Stickiness Many industrial chemical powders are hygroscopic, meaning they absorb moisture from ambient air or process gas. A dry powder can become an adhesive paste or slurry when exposed to humidity. Temperature can make the problem worse. Resins, polymers, and some additives may soften near their melting point or glass transition temperature. Heat and friction inside ductwork can make particles adhere to metal surfaces and filter media. ### The Blinding Phenomenon Dry collectors rely on air passing through filter fibers while dust stays on the surface. For the system to work, the dust cake must remain porous. Sticky chemical dust often adheres directly to filter fibers instead. Rather than forming a cleanable cake, it creates an impermeable layer called filter blinding. ![What Is the Safest Dust Collection for Sticky Chemical Dust](https://www.slyinc.com/wp-content/uploads/2026/08/bot2Fn6gUeBqE5pK95VHaCq2q2FcustomImages2Fsticky-dust-pictorial_compressed-1024x366.webp "The Complete Guide to Safest Dust Collection for Sticky Chemical Dust | Sly Air Pollution Control") When blinding occurs, several failures follow: 1. **Differential Pressure Spikes**: Resistance across the filters rises quickly. 2. **Airflow Choking**: Capture velocity drops at hoods, allowing dust to escape. 3. **Shortened Filter Life**: Pulse cleaning cannot remove the bonded cake, causing early changeouts and downtime. ### The Chemical Reactivity Factor Some sticky chemical dusts are not inert. In processes handling polymers, adhesives, or resin particles may be partially uncured. Once captured, they can continue cross-linking and permanently bond to the filter media. The result can be a solid, blocked filter element that cannot be cleaned. ### Explosion and Fire Risks Damp or sticky dust can still be combustible. Sticky organic or metallic particulates suspended in a high-velocity air stream can reach their Minimum Explosible Concentration (MEC). Sticky chemical dusts are also prone to static charge accumulation. Non-conductive particles rubbing against each other and the filter media can generate high voltage. Without proper grounding and static-dissipative media, a spark can ignite a dust cloud inside the collector. For a deeper look into reactive materials, read our guide on how to [master lithium dust collection for safety and efficiency](https://www.slyinc.com/blog/dont-get-dusted-how-to-master-lithium-dust-collection-for-safety-and-efficiency/). ### What Industries Struggle Most with Sticky Chemical Particulates? Several sectors regularly manage sticky chemical dusts while meeting strict safety and compliance requirements: - **Pharmaceutical Manufacturing**: Active pharmaceutical ingredients (APIs), binders, and excipients can be hygroscopic and have low exposure limits. - **Plastics and Polymer Processing**: Resin grinding, mixing, and conveying can generate sticky, static-prone polymer dust. - **Battery Manufacturing and Critical Minerals**: Lithium, cobalt, nickel, manganese, and rare earth compounds may be reactive, toxic, and moisture sensitive. To learn more about these materials, explore our [essential strategies for rare earth and critical mineral dust control](https://www.slyinc.com/blog/keep-it-clean-essential-strategies-for-rare-earth-and-critical-mineral-dust-control/). ### How Does the Dust Explosion Pentagon Apply to Sticky Chemical Dust? A dust explosion requires five elements: fuel, oxygen, dispersion, confinement, and ignition. Within a dry dust collector, all five can be present: 1. **Fuel**: Combustible chemical dust. 2. **Oxygen**: Air moving through the system. 3. **Dispersion**: Pulse cleaning can loft dust into suspension. 4. **Confinement**: The enclosed collector housing. 5. **Ignition**: Static discharge, friction sparks, or hot process gas. Because sticky dusts are often non-conductive, particle movement across dry media can generate static charge. If the Minimum Ignition Energy (MIE) is low, one discharge inside the confined collector can trigger a primary explosion and possible secondary explosions in the facility. ## How Do Wet Scrubbers Compare to Dry Collectors for Sticky Dust? The safest dust collection method for sticky chemical dust depends on moisture, reactivity, combustibility, and whether the plant must recover dry product. The main choice is between wet scrubbing and dry filtration. | Feature / Metric | Wet Particulate Scrubbers | Dry Baghouse Collectors | Dry Cartridge Collectors | |---|---|---|---| | **Sticky Dust Tolerance** | **Excellent** (No filters to blind; liquid continuously washes particles away) | **Moderate** (Requires specialized PTFE membranes and pre-coating) | **Poor** (Pleated design traps sticky dust; blinds rapidly) | | **Explosion Safety** | **Inherently Safe** (Water eliminates ignition sources and saturates dust) | **High Risk** (Requires expensive explosion venting and isolation) | **High Risk** (Requires extensive explosion protection systems) | | **Fine PM Efficiency** | High to Very High (Up to 99% with Venturi designs) | Very High (99.9% with proper membrane media) | Extremely High (99.97% with HEPA after-filters) | | **Maintenance Complexity** | Low to Moderate (Sump cleanout, liquid level monitoring) | High (Bag changeouts, pulse-system maintenance) | High (Frequent cartridge replacements in sticky apps) | | **Capital Cost (CAPEX)** | Moderate | High (When adding required NFPA safety systems) | Moderate to High | ### The Wet Scrubber Advantage For sticky, moist, or highly combustible chemical dusts, wet scrubbers are often the safest primary technology. They use liquid, typically water, as the collection medium rather than fabric filter pores. Because there are no pores to plug, wet scrubbers cannot blind like dry filters. The liquid encapsulates sticky particles, neutralizes adhesion, and carries them to a sump. This also reduces static buildup and dust cloud ignition risk. Discover more in our guide on [wet dust collectors for hazardous particulates and cleaner operations](https://www.slyinc.com/blog/wet-dust-collectors-your-solution-for-hazardous-particulates-and-cleaner-operations/). ### The Dry Collector Alternative Some applications require dry collection because the dust reacts with water, water use is limited, or the plant wants to reclaim dry powder. In those cases, a dry baghouse can be engineered with advanced filter media, surface treatments, static control, and explosion protection. Standard cartridge collectors are usually avoided for sticky dust because pleated media traps adhesive material and plugs quickly. For a broader overview, see our [industrial dust control ultimate guide](https://www.slyinc.com/blog/industrial-dust-control-ultimate-guide/). ### How Do Wet Scrubbers Safely Neutralize Sticky Chemical Dust? Wet scrubbers remove particles through gas-liquid contact, followed by droplet separation and sludge removal. ![Wet scrubbers are often more suitable for sticky dust because they use liquid to encapsulate particles rather than relying on a dry filter surface.](https://firebasestorage.googleapis.com/v0/b/ai-templates.appspot.com/o/bot%2Fn6gUeBqE5pK95VHaCq2q%2FcustomImages%2FWetScrubber-Rendering_compressed.webp?alt=media&token=bcfd9b49-f2d8-4a6f-9b15-51af21fbfda8 "user-inserted") #### Venturi Scrubbers Venturi scrubbers are effective for fine sticky particles and high dust loading. The gas stream accelerates through a converging throat where scrubbing liquid is injected. High turbulence atomizes the liquid into droplets, and sticky particles impact and become encapsulated. A downstream separator removes the dust-laden droplets so cleaned air can exit. #### Impingement Plate Scrubbers For larger particles or lower pressure drop applications, impingement plate scrubbers may be suitable. They force dirty air through wetted plates, creating sharp directional changes that drive particles into liquid. #### Sludge Management Captured solids settle in the sump as slurry. To maintain performance, suspended solids in the scrubbing liquid should be controlled, commonly below 5%. Drag-chain conveyors, clarification units, or blowdown systems remove concentrated slurry for disposal or recycling. ### When Can Dry Baghouses Be Safely Used for Sticky Dust? If a dry system is required, the design must use suitable filter media, static dissipation, cleaning energy, and combustible dust protection. #### The Role of Filter Media Standard polyester felt often fails in sticky service. A laminated Polytetrafluoroethylene (PTFE) membrane provides a low-friction surface and keeps dust on the media surface instead of allowing it to embed in the felt. This improves release during cleaning. #### Anti-Static and Epitropic Media Conductive media may be required to reduce static ignition risk. Stainless steel fibers or carbon-infused, epitropic acrylic fibers create paths for charge to move from the dust cake through the filter and into the grounded collector. #### Pulse-Jet Cleaning Dynamics Pulse-jet cleaning uses short bursts of compressed air to flex filter bags and release dust from the PTFE surface. In sticky applications, pulse timing, air pressure, and hopper discharge must be engineered together so released dust does not re-adhere or bridge. To keep a dry system operational, follow our [comprehensive baghouse maintenance checklist for peak performance](https://www.slyinc.com/blog/baghouse-bliss-a-comprehensive-maintenance-checklist-for-peak-performance/). ### What Are the Cost, Energy, and Environmental Trade-offs? - **Capital Expenses (CAPEX)**: A basic wet scrubber may cost less than a dry baghouse with explosion vents, isolation valves, rotary airlocks, and suppression. - **Operating Expenses (OPEX)**: Dry baghouses often run at lower pressure drop, while high-energy Venturi scrubbers need more fan horsepower. Dry systems also carry filter replacement and downtime costs. - **Water Treatment and Disposal**: Wet scrubbers generate sludge or wastewater. Plants must compare treatment, recycling, and disposal costs against dry dust handling and filter maintenance. ## How Should a Safe Dust Collection System Be Designed and Maintained? A safe system for sticky chemical dust should be engineered around the specific dust profile, not selected as an off-the-shelf collector. Moisture behavior, particle size, toxicity, combustibility, corrosion potential, and disposal requirements all affect the design. ![Custom-engineered multi-stage dust collection system featuring a wet scrubber integrated with a dry collector](https://www.slyinc.com/wp-content/uploads/2024/11/Wet-Scrubber-6-CNR-.jpg "Custom-engineered multi-stage dust collection system featuring a wet scrubber integrated with a dry collector") ### Material Selection Sticky chemical dusts can be corrosive or reactive. Internal surfaces should resist corrosion and reduce adhesion: - **316L Stainless Steel**: Provides corrosion resistance and can be polished to reduce dust buildup. - **Fiberglass Reinforced Plastic (FRP)**: Useful in wet scrubbers handling corrosive gases and sticky chemical particulate. - **Specialized Epoxy Coatings**: Can protect carbon steel with a smooth, chemical-resistant barrier. ### Ductwork Design Ductwork is a common failure point. If velocity drops below transport velocity, sticky dust settles in horizontal runs, restricts airflow, and creates a fuel source. Ductwork should include: - High conveying velocities, typically 4,000 to 4,500 feet per minute for chemical dusts. - Smooth, long-radius elbows instead of sharp bends. - Accessible cleanout ports for inspection and removal of buildup. ### What Safety Features Are Required for Combustible Sticky Dust? Combustible sticky dust in a dry collector requires compliance with NFPA 660 and a documented hazard analysis. #### Explosion Venting and Suppression Dry collectors may require explosion relief panels that vent deflagration pressure and flame to a safe location. If outdoor venting is not practical, active chemical suppression may be needed to detect pressure rise and inject extinguishing agent. #### Isolation Valves Fast-acting mechanical isolation valves or float-type isolation valves help prevent an explosion from propagating back through inlet ductwork. Rotary airlocks at hopper discharge help maintain a physical seal. #### System Grounding and Bonding Duct sections, hoods, collector housings, filter cages, and fan assemblies must be bonded and connected to verified earth ground. This reduces voltage differences that can create static sparks. ### What Maintenance Protocols Prevent Catastrophic System Failures? Preventive maintenance is critical for sticky chemical dust service. - **Differential Pressure Monitoring**: A sustained upward trend across dry filters signals blinding and allows planned changeout before airflow collapses. - **Wet Scrubber Sump Maintenance**: Operators should monitor liquid level, pH, and suspended solids. Automated blowdown and make-up water help keep solids concentration below 5% and reduce scaling or nozzle plugging. - **Safe Change Containment**: For toxic or highly active dusts such as pharmaceutical APIs proper safety procedures must be followed. ### How Can Sly Help Solve Your Sticky Chemical Dust Challenges? Sly, LLC designs custom dry dust collectors, wet scrubbers, and integrated air pollution control systems for complex industrial applications. #### Over a Century of Engineering Expertise Since pioneering the first cloth-type dust collector in 1902, Sly has helped industrial facilities solve demanding particulate and gas control problems. Systems are engineered from facilities in Strongsville, Ohio, and Mathiston, Mississippi, around the physical and chemical demands of the application. #### Single-Source Capability for Dry and Wet Technologies Sly designs and builds both dry dust collectors, including baghouses and cartridge systems, and wet scrubbing systems, including FRP packed towers and Venturi scrubbers. This allows an unbiased approach when a wet system, dry system, or multi-stage system is the best fit. #### Custom Engineering for Your Exact Dust Profile Sly application engineers help evaluate process conditions, dust characteristics, materials of construction, filter media, and safety requirements. The goal is reliable compliance, lower lifecycle cost, and safer operation. If you are evaluating a multi-stage dust and gas control system, or struggling with a blinding sticky dust application, [Sly’s application engineers can help review your project](https://www.slyinc.com/services/) and design a compliant solution. **Categories:** Blog **Tags:** OSHA Compliance --- ### [Impacts of Poor Industrial Dust Control](https://www.slyinc.com/blog/top-7-causes-of-poor-industrial-dust-control/) **Published:** September 7, 2026 **Author:** Al Moretti **Excerpt:** Discover the Top 7 Causes of Poor Industrial Dust Control and how to fix them for safer, compliant facilities. **Content:** ### What Are the Real-World Consequences of Ineffective Dust Suppression? When industrial dust control systems fail, the fallout ripples across occupational health, safety, equipment reliability, and environmental compliance. From a health perspective, respirable dust (particles 10 microns or smaller) poses the greatest threat. Unlike larger nuisance dust, respirable crystalline silica (RCS) and coal dust penetrate deep into the lungs, causing irreversible diseases like silicosis and black lung. The severity of this hazard is underscored by the fact that the life expectancy of underground mine workers is 20 years shorter than the general population. Furthermore, a [systematic review of the effectiveness of dust control measures](https://pmc.ncbi.nlm.nih.gov/articles/PMC10121514/) revealed a stark gap between implemented controls and actual exposure. Out of the analyzed studies, 55.0% of operations handling respirable crystalline silica and 79.3% of operations handling respirable coal dust reported a high risk of worker overexposure. Beyond chronic health risks, poor dust control creates immediate safety hazards, most notably catastrophic combustible dust explosions. Five components are required to trigger a dust explosion: - Fuel: Ignitable fine dust accumulated on surfaces. - Ignition Source: A spark, static discharge, or hot surface. - Oxidizer: Oxygen in the ambient air. - Suspension: A sudden disturbance that lofts the dust into a cloud. - Confinement: An enclosed room, duct, or vessel that allows pressure to build. Operationally, fugitive dust accelerates equipment wear. When abrasive particulates bypass filtration, they settle into bearings, clog engine air intakes, and increase fuel consumption by 15 to 30% on haul vehicles. Environmentally, light-absorbing impurities from black coal and mineral dust settle on snow and glaciers, accelerating melting. In Central Asia, mineral dust deposition contributes to approximately 16% of total glacier melt. ![Top 7 Causes of Poor Industrial Dust Control](https://www.slyinc.com/wp-content/uploads/2026/08/8cd342e5b10d42c3b9633d6332f73844-1024x630.png "Impacts of Poor Industrial Dust Control | Sly Air Pollution Control") ### Why Do Companies Struggle to Achieve 95 to 99% Dust Reduction? Despite highly efficient air pollution control equipment, many facilities struggle to achieve consistent 95 to 99% dust reduction due to economic, operational, and regulatory barriers. Economically, many companies prioritize low upfront capital expenditure over long-term lifecycle savings. They choose off-the-shelf, undersized collectors or cheap chemical suppressants rather than custom-engineered solutions. This short-term focus overlooks the fact that proper dust control on haul roads alone can reduce road maintenance by 50% and water consumption by 90 to 95%, yielding massive operational savings. Operationally, many plants rely on outdated, reactive methods. Spraying water continuously on a dusty conveyor transfer point or haul road is a common default. However, water evaporates rapidly, often within 10 to 25 minutes in dry conditions, and can wash away the fine binding materials that hold unpaved surfaces together, worsening the dust problem over time. Regulatorily, a major disconnect exists because plants often treat worker exposure limits governed by OSHA (such as 29 CFR 1910.1000) and ambient emission caps governed by the EPA as separate challenges. In reality, indoor air quality and outdoor stack emissions are part of a single, connected air balance loop. To help facilities navigate these complexities, our [Industrial Dust Control Ultimate Guide](https://www.slyinc.com/blog/industrial-dust-control-ultimate-guide/) provides a comprehensive framework for transitioning from reactive, localized fixes to preventive, system-wide engineering. Achieving pristine air quality requires every component of an air pollution control system to work in harmony. When dust escapes, it is rarely the fault of a single component. Rather, it is typically the result of specific technical, design, or operational failures. Below, we examine the top seven causes of poor industrial dust control and how they sabotage your air quality goals. ## 1. Improper Hood Design and Poor Source Capture The first line of defense in any local exhaust ventilation (LEV) system is the hood. If a hood cannot capture dust at the exact point of generation, the rest of the dust collection system is rendered useless. Many systems fail because they do not apply the “Three Cs” of proper hood engineering: - Containment: Enclosing the dust-producing process as much as possible to limit the volume of air that must be exhausted. - Capture: Directing the exhaust airflow path directly through the path of the generating dust. - Control: Providing sufficient exhaust volume and velocity to overcome cross-drafts and pull the dust into the ductwork. A common mistake is placing the hood too far from the dust generation point. Because capture velocity decreases exponentially as distance from the source increases, even a minor cross-draft can easily disperse fine respirable particles into the worker breathing zone before the hood can capture them. As detailed in [Processing Magazine’s guide on dust collection system failures](https://www.processingmagazine.com/material-handling-dry-wet/powder-bulk-solids/article/55317791/six-main-reasons-for-dust-collection-system-failure), improper hood design remains one of the most common reasons why systems fail to protect facilities, even when the collector itself is operating perfectly. ## 2. Inadequate Airflow Engineering and Duct Sizing Once dust is captured, it must be transported to the collector. This requires precise duct velocity engineering. If the air velocity inside the duct falls below the minimum transport threshold, dust will settle out of the airstream and accumulate inside horizontal duct runs. The industry standards for minimum transport velocities are: - 4,000 feet per minute (fpm): For typical non-combustible industrial dusts. - 4,500 fpm: For combustible dusts, as recommended by the National Fire Protection Association (NFPA) to prevent fuel accumulation inside the ductwork. When dust settles in the ducts, it restricts airflow, increases system static pressure, and creates a severe combustible dust hazard. This problem can sometimes be compounded by using manual balancing methods, such as dampers or bleed-in air valves, to balance multi-branch duct systems. These mechanical adjustments restrict airflow and are prone to tampering. Instead, systems should rely on a physics-based “Balanced-by-Design” manifold system, which uses precise duct diameters and junction angles to maintain self-cleaning velocities naturally. In [The Definitive Guide to Baghouse Dust Collectors](https://www.slyinc.com/blog/the-definitive-guide-to-baghouse-dust-collectors/), we outline how proper ductwork manifolding and plenum design prevent drop-out and maintain critical transport velocities throughout the system. ## 3. Incorrect Dust Collector Selection for the Application A dust collector is not a one-size-fits-all machine. Selecting the wrong type of collector for your specific process conditions will lead to rapid system failure. For instance, using dry cartridge collectors in high-moisture, sticky, or hygroscopic dust environments leads to rapid filter blinding. Cartridge filters have tight pleats that easily bridge with damp dust, choking off airflow. Additionally, exceeding safe air-to-media ratios (the volume of air passing through each square foot of filter media) is a frequent design flaw. Furthermore, dry dust collectors are often inappropriate for hazardous, sticky, or highly explosive particulates. In these scenarios, wet dust collectors are the safer, more reliable choice. Wet systems encapsulate dust particles in liquid droplets, eliminating the risk of dry dust explosions and preventing sticky materials from cementing onto dry fabric filters. To understand which technology fits your process, read our guide on [Wet Dust Collectors: Your Solution for Hazardous Particulates and Cleaner Operations](https://www.slyinc.com/blog/wet-dust-collectors-your-solution-for-hazardous-particulates-and-cleaner-operations/). ## 4. Poor Sealing Performance and Equipment Leaks Even the most efficient filter media cannot prevent dust emissions if air can bypass the filters entirely. Poor sealing performance is a silent saboteur of dust filtration systems. This issue typically stems from: - **Improper Sealing Materials:** Cheap, standard neoprene gaskets can dry out, crack, or break down in high-temperature or chemically corrosive applications. - **Unreasonable Sealing Structures:** Warped access hatches, poorly machined door latches, or misaligned tube sheets create gaps where dirty air bypasses filtration. - **Improper Bag Installation:** Filter bags that are not fully seated, tensioned correctly, or clamped securely can leak around the cuff, sag into the dirty-air stream, or wear prematurely. Even one poorly installed bag can allow dust to escape and raise emissions. To prevent bypass leakage, critical joints and access doors should utilize high-performance, resilient sealing materials like silicone or fluororubber, which maintain their elasticity under harsh operating conditions. Regular maintenance teams should perform visual inspections and pressure decay tests around doors, hopper connections, and dirty-air plenums to identify and seal leaks immediately. ## 5. Inadequate Collected Material Discharge and Hopper Accumulation A dust collector’s hopper is designed strictly as a temporary transit funnel to direct captured dust to a discharge valve. It is not a storage bin. When facilities fail to maintain a continuous, first-in, first-out material discharge schedule, dust builds up inside the hopper. This leads to several critical issues: - Material Bridging and Clogging: Fine dust packs together, bridging over the outlet and completely blocking discharge. - “Hammer Rash”: Frustrated operators often use sledgehammers to strike the hopper walls to encourage material flow, denting the metal and creating internal pockets that worsen bridging. - Filter Re-Entrainment: Accumulated dust rises to the level of the filter elements, where the high-velocity inlet air sweeps the dust back onto the filters, causing rapid blinding and high differential pressure. To avoid these failures, hoppers must be paired with properly sized rotary valves or double-dump valves. Our [Baghouse Bliss: A Comprehensive Maintenance Checklist for Peak Performance](https://www.slyinc.com/blog/baghouse-bliss-a-comprehensive-maintenance-checklist-for-peak-performance/) outlines the daily and weekly inspection protocols required to keep hoppers empty and discharge systems operating smoothly. ## 6. Production Expansion Without System Re-Evaluation When a manufacturing plant expands production, managers often add new dust-producing machinery, conveyor transfer points, or packaging lines. A common mistake is ducting these new pickup points directly into the existing dust collection system without re-evaluating the system’s capacity. Adding pickup points to an existing system without upgrading the fan or collector leads to: - Reduced Capture Velocity: The available static pressure and airflow are divided among more hoods, causing the velocity at every hood to drop below the minimum capture threshold. - Duct Settling: Total system airflow drops, causing transport velocities inside the main duct runs to fall below 4,000 fpm, leading to dust drop-out and clogging. - Overloaded Filter Media: The increased dust loading exceeds the design capacity of the baghouse, causing high differential pressure and premature filter failure. Any process change, production expansion, or modification to material chemistry requires a comprehensive engineering audit of the entire air pollution control system. ## How Can Facilities Diagnose and Resolve Dust Control Failures? ![A technician performing a differential pressure check on an industrial baghouse](https://www.slyinc.com/wp-content/uploads/2024/10/baghouse-analysis-services.jpg "A technician performing a differential pressure check on an industrial baghouse") Resolving chronic dust control issues requires moving away from reactive troubleshooting and adopting a systematic, predictive maintenance approach. Use the guide below to diagnose, optimize, and maintain your air pollution control systems. | Technology Type | Particulate Collection Efficiency | Relative Capital Cost | Best Application Suitability | |---|---|---|---| | **Dry Baghouse** | Very High (Up to 99.9% for fine dust) | Moderate to High | Dry, non-sticky, non-hygroscopic bulk materials handling and processing. | | **Wet Scrubber** | High (99% for particles > 1 micron) | Moderate | High-moisture, high-temperature, sticky, or explosive/combustible particulates. | | | | | . | ### How Do You Conduct a Dust Control System Audit? To find the root cause of poor performance, conduct a thorough system audit using these steps: 1. **Measure Hood Static Pressure:** Use a pitot tube and manometer to verify that each hood has sufficient static pressure and capture velocity to entrain dust at the source. 2. **Verify Duct Velocities:** Measure air velocity in horizontal duct runs to ensure it meets the minimum 4,000 fpm (non-combustible) or 4,500 fpm (combustible) transport threshold. 3. **Inspect Filter Media:** Check the clean-air plenum for signs of dust bypass, which indicates torn bags or leaking seals. If you suspect filter issues, consult our guide on [How to Replace Your Baghouse Filters for Optimal Performance](https://www.slyinc.com/blog/how-to-replace-your-baghouse-filters-for-optimal-performance/) to diagnose failure modes and execute proper changeouts. 4. **Analyze Airflow Distribution:** Uneven airflow causes localized filter wear and premature blinding. Advanced engineering tools, such as Computational Fluid Dynamics (CFD) modeling, can simulate airflow patterns inside the collector inlet to identify and correct high-velocity wear zones. ### What Is the Role of Automated Monitoring and Maintenance? Automated monitoring systems eliminate guesswork and prevent unexpected downtime. Key components to integrate into your system include: - **Differential Pressure (DP) Transmitters:** Continuous DP monitoring tracks dust cake buildup on the filters. This data should be used to trigger pulse-jet cleaning cycles only when needed, rather than running on a continuous timer. This extends filter life and reduces compressed air costs, as explained in our guide on [Pulse Jet Filter Cleaning](https://www.slyinc.com/blog/pulse-jet-filter-cleaning/). - **Broken Bag Detectors:** These triboelectric dust monitors detect particulate emissions in the exhaust stack, alerting maintenance teams to filter leaks long before visible dust escapes. - **Rotary Valve Interlocks:** Automated sensors can detect rotary valve failures or hopper high-material levels, shutting down upstream processes before dust backs up into the collector. ### How Can Sly Help Optimize Your Air Pollution Control System? Sly designs and manufactures custom, high-quality industrial air pollution control systems like baghouses and wet scrubbers. As a pioneer since 1902 with the first cloth-type dust collector, Sly delivers reliable, no-compromise solutions for the cleanest air possible. Our engineers act as trusted advisors, evaluating your unique process chemistry, dust characteristics, and regulatory requirements. Because we design and build both dry dust collectors and wet scrubbers, we can provide unbiased, multi-stage systems from a single source, reducing your project risk and lowering long-term operating costs. If you are ready to resolve your dust control challenges, explore [Sly’s Industrial Air Pollution Control Services](https://www.slyinc.com/services/) or contact our engineering team directly at [Sly, LLC](https://www.slyinc.com/). ## Frequently Asked Questions (FAQs) ### What is the minimum duct velocity required to prevent dust from settling? For typical non-combustible industrial dusts, duct velocity must be maintained at a minimum of 4,000 fpm. For combustible dusts, the NFPA requires a minimum transport velocity of 4,500 fpm to prevent hazardous dust accumulation inside the ductwork. ### How does incorrect air-to-media ratio affect a baghouse? An air-to-media ratio that is too high means too much air is being forced through too little filter area. This causes high differential pressure, deep particle embedding (blinding), rapid filter wear, and excessive energy consumption from the system fan. ### When should I use a wet scrubber instead of a dry baghouse? Wet scrubbers are preferred when handling high-moisture or high-temperature exhaust streams, sticky or hygroscopic particulates that would blind fabric filters, or in some cases combustible and explosive dusts that present a fire hazard in dry collectors. **Categories:** Dust Collector Maintenance **Tags:** OSHA Compliance --- ### [How Wet Scrubber Systems Remove Corrosive Fumes](https://www.slyinc.com/blog/how-wet-scrubber-systems-remove-corrosive-fumes/) **Published:** August 31, 2026 **Author:** Al Moretti **Excerpt:** Learn how wet scrubber systems remove corrosive fumes by absorbing and neutralizing HCl, HF, and SO2 gases for safer, compliant operations. **Content:** At its core, a wet scrubber is a mass transfer device. It relies on a simple physical and chemical reality: gaseous pollutants can be transferred from an exhaust stream into a liquid solvent if you create the right conditions. When dealing with corrosive fumes, this transfer is not just physical dissolution. It is paired with chemical neutralization to ensure the pollutants are permanently captured and rendered harmless. ### The Core Principle of Gas Absorption and Two-Film Theory To understand how a wet scrubber removes corrosive fumes, we must look at the gas-liquid interface. This process is governed by the Two-Film Theory. According to this engineering model, a stagnant gas film and a stagnant liquid film exist on either side of the interface between the exhaust gas and the scrubbing liquid. For absorption to occur, the target gas molecules must diffuse through the gas film, cross the interface, and then diffuse through the liquid film to dissolve into the bulk liquid solvent. The rate of this mass transfer depends heavily on: - The solubility of the gas in the specific liquid solvent. - The temperature of the gas and liquid streams (lower temperatures generally favor absorption). - The total surface area of the gas-liquid interface. - The concentration gradient of the pollutant between the gas and liquid phases. ### Chemical Neutralization and Reagent Chemistry If you were to use pure water as your scrubbing liquid to capture highly acidic gases, the water would quickly become saturated. As the concentration of dissolved acid in the liquid rises, the concentration gradient decreases, and the mass transfer rate drops. Eventually, the scrubber stops removing the fumes. To prevent this, we introduce chemical reagents into the scrubbing liquid. Adding an alkaline reagent, most commonly sodium hydroxide (NaOH) or potassium hydroxide (KOH), initiates an immediate chemical reaction. The reagent neutralizes the dissolved acid, converting it into a highly soluble, non-hazardous salt and water. This reaction keeps the concentration of the unreacted acid in the liquid phase at virtually zero, maintaining a steep concentration gradient that drives continuous, high-efficiency gas absorption. This fundamental relationship between gas-liquid contact, system configuration, and absorption efficiency is thoroughly documented in EPA technical guidance in [Section 5.2 Chapter 1 – Wet Scrubbers for Acid Gas](https://www.epa.gov/sites/default/files/2020-07/documents/cs5-2ch1.pdf). For the most common industrial acid gases, the chemical neutralization equations are: - **Hydrochloric Acid:** HCl + NaOH -> NaCl + H2O - **Hydrofluoric Acid:** HF + NaOH -> NaF + H2O - **Sulfur Dioxide:** SO2 + 2NaOH -> Na2SO3 + H2O - **Hydrogen Sulfide:** H2S + 2NaOH -> Na2S + 2H2O ### Which Corrosive Pollutants Can Wet Scrubbers Effectively Remove? Wet scrubbers are highly versatile systems capable of removing a wide array of corrosive and hazardous gases. The targeted pollutants generally fall into three categories: - **Mineral Acids:** Hydrochloric acid (HCl), hydrofluoric acid (HF), nitric acid fumes (HNO3), and sulfuric acid mist (H2SO4). - **Alkaline Fumes:** Ammonia (NH3) gas, which is typically scrubbed using an acidic solution like dilute sulfuric acid rather than an alkaline one. - **Sulfur and Halogen Compounds:** Sulfur dioxide (SO2), hydrogen sulfide (H2S), and chlorine gas (Cl2). The ease of removal is directly tied to the pollutant’s solubility. Highly soluble gases like HCl and NH3 are incredibly easy to capture, often achieving removal efficiencies between 95% and 99% or greater with relatively simple scrubber configurations. Less soluble gases require longer contact times, specialized packing, or highly targeted chemical reagents to achieve regulatory compliance. For a deeper look at managing these challenging streams, read our comprehensive guide, [Don’t Get Gassed: The Ultimate Guide to Acid Gas Management](https://www.slyinc.com/blog/dont-get-gassed-the-ultimate-guide-to-acid-gas-management/). A major advantage of wet scrubbers is their ability to handle high-temperature, high-humidity gas streams. In dry air pollution control systems like baghouses, high humidity or temperature drops can cause moisture condensation, which leads to filter blinding, caking, and rapid corrosion of metal housings. Wet scrubbers naturally cool and saturate the gas stream, eliminating condensation risks and allowing for the simultaneous removal of aerosols and corrosive vapors. ### What Are the Key Design Parameters That Determine Removal Efficiency? When we design a wet scrubber for corrosive fume control, we must carefully balance several engineering parameters to achieve the required outlet emissions limits while minimizing operating costs: - **Liquid-to-Gas (L/G) Ratio:** This is the volume of scrubbing liquid introduced per unit volume of exhaust gas, typically measured in gallons per 1,000 cubic feet (gpm/1,000 cfm). For acid gas scrubbing, typical L/G ratios range from 10 to 120 gallons per 1,000 cubic feet of gas. If the L/G ratio is too low, there will not be enough liquid surface area to contact and absorb the gas. If it is too high, the system will consume excess pumping energy and may flood the scrubber vessel. - **Packing Height and Surface Area:** In packed bed scrubbers, the height of the packing material directly determines the gas residence time and the available surface area for mass transfer. Standard applications use packing heights between 5 and 10 feet, while high-efficiency systems targeting highly toxic or low-solubility gases may require packing heights up to 20 feet. - **pH and Conductivity Control:** To maintain neutralization efficiency, the chemistry of the recirculating liquid must be continuously managed. Automated dosing systems use pH and conductivity probes to monitor the liquid. For acid gas control, the system automatically adds fresh alkaline reagent to keep the circulation pH between 8 and 10. - **Pressure Drop:** As gas flows through the packing or a restricted throat, it encounters resistance, resulting in a pressure drop (measured in inches of water column). While higher pressure drops can increase gas-liquid contact and particulate collection, they also require larger system fans and increase electrical energy consumption. Designing for the lowest pressure drop that still achieves compliance is key to controlling long-term operating costs. ## What Are the Main Types of Wet Scrubbers Used for Fume Control? Not all wet scrubbers are designed the same way. The choice of scrubber configuration depends on whether your exhaust stream contains only gaseous fumes, a mix of fumes and particulate matter, or highly variable concentrations of multiple pollutants. ![How Wet Scrubber Systems Remove Corrosive Fumes](https://www.slyinc.com/wp-content/uploads/2026/08/bot2Fn6gUeBqE5pK95VHaCq2q2FcustomImages2FWet20Scrubber20Comparison_compressed-1024x700.webp "How Wet Scrubber Systems Remove Corrosive Fumes | Sly Air Pollution Control") | Scrubber Type | Gas Removal Efficiency | Particulate Handling | Relative Pressure Drop | Primary Application | |---|---|---|---|---| | **Packed Bed Scrubber** | Ultra-High (>99%) | Poor (prone to clogging) | Low (0.5 to 4 in. WC) | Pure gas absorption, acid fumes, odor control | | **Venturi Scrubber** | Moderate (70% to 90%) | Excellent (sub-micron) | High (10 to 60+ in. WC) | High particulate loads with secondary acid gas | | **Multi-Stage Scrubber** | Ultra-High (>99%) | Good (with upstream dry stage) | Moderate | Complex streams, lithium processing, chemical plants | Selecting the right configuration is critical for both capital and operational efficiency, as detailed in the classic AIChE article, [Consider Wet Scrubbers for Pollution Control \| AIChE](https://www.aiche.org/resources/publications/cep/2018/october/consider-wet-scrubbers-pollution-control). ### Why Are Packed Bed Scrubbers the Industry Standard for Acid Gases? For pure gas-phase corrosive fumes, packed bed scrubbers (also known as packed towers) are the undisputed industry standard. In a vertical counter-current packed bed scrubber, the contaminated gas enters the bottom of the vessel and flows upward. The scrubbing liquid is introduced at the top through a distributor and flows downward over a bed of loose, high-surface-area packing media. This counter-current flow pattern ensures that the cleanest gas contacts the freshest, most chemically active scrubbing liquid right before exiting the system, maximizing the mass transfer driving force. The packing media itself is designed to provide the maximum possible surface area for gas-liquid contact while maintaining a highly open structure that minimizes pressure drop. Packing shapes (such as saddles or rings) are selected based on the specific chemistry, temperature, and flow rates of the application. Because of this optimized contact, packed towers routinely achieve gaseous removal efficiencies exceeding 99% for highly soluble inorganic fumes. ### When Is a Venturi Scrubber Preferred Over a Packed Tower? While packed towers excel at gas absorption, they have a major vulnerability: solid particulate matter. If your exhaust stream contains both corrosive fumes and fine dust, the particulate will quickly settle in the packing bed, causing clogging, channeling, and system failure. In these scenarios, a Venturi scrubber is the preferred choice. A Venturi scrubber accelerates the gas stream to high velocities (typically 200 to 400 feet per second, or 60 to 120 meters per second) as it passes through a constricted throat. Scrubbing liquid is injected directly into this high-velocity zone, where the extreme shear forces atomize the liquid into millions of tiny droplets. These droplets collide with and capture fine particulate matter down to the sub-micron level. While Venturi scrubbers are unmatched for particulate removal, they have limitations when it comes to gas absorption. The contact time between the gas and liquid in a Venturi throat is incredibly short (often a fraction of a second), resulting in lower gas absorption efficiencies than packed towers. Additionally, operating a Venturi requires significant fan energy to overcome the high pressure drop across the throat. ### How Do Multi-Stage and Hybrid Systems Solve Complex Emission Problems? When an industrial process generates an exhaust stream containing high concentrations of both dry particulates and corrosive acid gases, a single-stage device is rarely enough. The most effective approach is a system-level solution that combines dry and wet technologies in series. For example, we frequently design hybrid systems where a dry dust collector (such as a Sly baghouse) is installed upstream of a packed bed wet scrubber. The baghouse captures the dry, valuable, or hazardous particulate matter first, protecting the downstream wet scrubber. The clean, particulate-free gas then enters the packed tower, where the corrosive acid gases are neutralized without any risk of fouling the packing media. This multi-stage approach is highly effective for complex, high-risk processes like lithium production, battery recycling, and semiconductor manufacturing. It ensures complete regulatory compliance, minimizes chemical reagent consumption, and dramatically reduces maintenance downtime. To learn more about how these systems are integrated, read our detailed overview, [From Fumes to Fresh Air: Understanding Wet Scrubber Technology](https://www.slyinc.com/blog/from-fumes-to-fresh-air-understanding-wet-scrubber-technology/). ## How Do Materials of Construction and Maintenance Prevent Scrubber Failure? The very chemical reactions that make wet scrubbers so effective at neutralizing acid gases also create an incredibly harsh internal environment. If a scrubber is built from the wrong materials, or if routine maintenance is neglected, the system can fail rapidly, leading to costly unscheduled downtime, safety hazards, and environmental non-compliance. ### Material Selection Guidelines for Corrosive Environments Selecting the right Material of Construction (MOC) is the single most important factor in ensuring wet scrubber longevity. Standard carbon steel and even basic stainless steels will degrade rapidly when exposed to hot, acidic exhaust streams containing chlorides or fluorides. ![Corrosion-resistant Fiberglass Reinforced Plastic (FRP) wet scrubber vessel](https://www.slyinc.com/wp-content/uploads/2024/10/Wet-Scrubbers-OEMs.jpg "Corrosion-resistant Fiberglass Reinforced Plastic (FRP) wet scrubber vessel") - **Polypropylene (PP) and Polyvinyl Chloride (PVC):** These thermoplastics offer outstanding chemical resistance to a wide range of mineral acids and alkalis. They are highly cost-effective but are limited by temperature, generally recommended only for applications operating below 140 degrees Fahrenheit (60 degrees Celsius). - **Fiberglass Reinforced Plastic (FRP):** FRP is the premier material for industrial wet scrubbers. By utilizing premium vinyl ester resins, FRP vessels can withstand highly aggressive chemical environments and operating temperatures up to 220 degrees Fahrenheit (104 degrees Celsius). FRP offers an exceptional strength-to-weight ratio and can be custom-fabricated to meet precise structural and chemical requirements. - **Stainless Steel (304/316L) and Exotic Alloys:** While plastic and FRP are preferred for acid service, stainless steel or exotic alloys (like Hastelloy) are used when process temperatures are exceptionally high, or when strict sanitary or Good Manufacturing Practice (GMP) standards must be met, such as in certain pharmaceutical or food processing applications. ### What Maintenance Practices Ensure Long-Term Scrubber Performance? Even a perfectly engineered scrubber will lose efficiency if it is not properly maintained. To ensure continuous compliance and prevent unexpected failures, plant operators should focus on four critical maintenance areas: 1. **Mist Eliminator Care:** As clean gas leaves the scrubbing zone, it carries tiny entrained liquid droplets with it. Mist eliminators (such as chevron blades or mesh pads) capture these droplets to prevent them from exiting the stack as “stack rain.” If these eliminators become plugged with solids or scale, the pressure drop will rise, and liquid carryover will increase. Regular inspection and wash-down cycles are essential. 2. **Nozzle and Liquid Distribution Inspections:** The spray nozzles must provide a uniform pattern to wet the packing bed completely. If nozzles become plugged with debris or worn down by abrasive particulates, dry spots will form in the packing. This “channeling” allows the gas to bypass the scrubbing liquid, causing a rapid drop in removal efficiency. 3. **Instrumentation Calibration:** Wet scrubbers rely heavily on automated controls to maintain the correct chemical balance. pH sensors, conductivity probes, and differential pressure transmitters must be calibrated regularly. A drifted pH probe can lead to under-dosing of reagents, resulting in acid breakthrough and accelerated corrosion downstream. 4. **Liquid Management and Blowdown:** As acid gases are neutralized, dissolved salts accumulate in the scrubbing liquid. If the concentration of these salts becomes too high, they will begin to precipitate, causing scale buildup on the packing and vessel walls. Implementing a controlled blowdown rate (discharging a portion of the concentrated liquid and replacing it with fresh makeup water) is critical to keeping salt concentrations below the saturation point. ### How Does Sly Help Industrial Facilities Design the Right Fume Control System? At Sly, LLC, we do not believe in one-size-fits-all solutions. Every industrial process has a unique exhaust profile, and a cookie-cutter scrubber will almost always lead to operational headaches or compliance risks. Our engineering-first approach begins with a thorough evaluation of your process data: gas flow rates, inlet temperatures, exact chemical concentrations, particulate characteristics, and your local regulatory emission limits. Whether you need a standalone FRP packed tower for acid gas control or a custom-designed wet scrubber system integrated with a dry baghouse, our team designs and manufactures the entire system to deliver reliable, long-term performance. If you are currently evaluating a fume control project or struggling with an existing emissions challenge, let our application specialists help you select and size the ideal system for your plant. Explore our custom engineering capabilities on the [Sly Industrial Wet Scrubbers Product Page](https://www.slyinc.com/products/industrial-wet-scrubbers/) or contact us today to request a technical consultation. **Categories:** Blog **Tags:** OSHA Compliance --- ### [Mining for Solutions: Effective Dust Control in Critical Mineral Operations](https://www.slyinc.com/blog/keep-it-clean-essential-strategies-for-rare-earth-and-critical-mineral-dust-control/) **Published:** July 27, 2026 **Author:** Al Moretti **Excerpt:** Master Rare Earth & Critical Mineral Dust Control for safety & efficiency. Learn expert strategies, tech & compliance. **Content:** ## Why Rare Earth and Critical Mineral Dust Control Matters More Than Ever **Rare Earth & Critical Mineral Dust Control** is essential for protecting workers, meeting environmental regulations, and maintaining operational efficiency in mining and processing facilities. Here’s what you need to implement effective dust control: **Core Dust Control Strategies:** 1. **Engineer controls at the source** – Install local exhaust ventilation, capture hoods, and wet suppression systems at dust generation points 2. **Select appropriate collection equipment** – Choose between baghouse dust collectors for dry applications or wet scrubbers for combustible or sticky dusts 3. **Establish monitoring systems** – Track differential pressure, airflow, and emissions to maintain optimal performance 4. **Implement proactive maintenance** – Schedule regular filter inspections, valve checks, and system integrity reviews 5. **Train workers and enforce protocols** – Maintain housekeeping standards and ensure proper PPE usage The global demand for rare earth elements and critical minerals like lithium, cobalt, and neodymium is surging. As facilities ramp up extraction and processing operations, they’re generating **hazardous dust** that poses serious health risks and regulatory challenges. Unlike ordinary industrial dust, rare earth and critical mineral particulates can contain radioactive elements like thorium and uranium. Some materials have pyrophoric properties, meaning they can spontaneously ignite. The ultra-fine particles (PM2.5) penetrate deep into workers’ lungs, causing respiratory illnesses and long-term health problems. **Without proper controls, you’re facing:** - Worker health hazards and potential compensation claims - Environmental contamination of soil, water, and air - Equipment failures and costly downtime - Product cross-contamination affecting quality - Fire and explosion risks - Steep fines from OSHA, EPA, and MSHA violations This guide walks you through practical, proven strategies for implementing dust control systems that keep your facility clean, compliant, and productive. ![Infographic showing the mineral processing workflow from extraction through crushing, grinding, screening, and packaging stages, with callout boxes indicating major dust generation points at each stage including conveyor transfer points, crusher discharge areas, screening stations, bagging operations, and vehicle movement zones - Rare Earth & Critical Mineral Dust Control infographic ](https://images.bannerbear.com/direct/4mGpW3zwpg0ZK0AxQw/requests/000/118/212/257/0Mn5r3E1XY0wvjroQWPoD9kg7/1387cde353a7d91a6dea1f100fb360108cdf4903.jpg "Infographic showing the mineral processing workflow from extraction through crushing, grinding, screening, and packaging stages, with callout boxes indicating major dust generation points at each stage including conveyor transfer points, crusher discharge areas, screening stations, bagging operations, and vehicle movement zones - Rare Earth & Critical Mineral Dust Control infographic ") ## Why Effective Dust Control is Non-Negotiable In rare earth and critical mineral processing, dust isn’t just a nuisance; it’s a formidable adversary. Ignoring its presence can lead to a cascade of problems, impacting everything from the health of our team to the bottom line of our operations. We’ve seen the critical importance of robust **Rare Earth & Critical Mineral Dust Control** measures. First and foremost, there are the health hazards. Mineral dust, especially the fine particulate matter generated during the processing of rare earth and critical minerals, can be incredibly insidious. Exposure can lead to serious and often irreversible respiratory illnesses. For instance, crystalline silica dust, commonly found in many mineral operations, is a known culprit behind silicosis, a debilitating lung disease. Beyond silicosis, workers can face heavy metal toxicity and other respiratory ailments, leading to long-term health issues and potential worker compensation claims. Our commitment to our workforce means ensuring the cleanest air possible. You can find more scientific research on silica dust hazards directly from [OSHA](https://www.osha.gov/silica-crystalline). Then, we consider the environmental impact. Uncontrolled dust doesn’t respect facility boundaries. It escapes into the atmosphere, leading to air quality degradation. It settles on surrounding land, causing soil pollution, and can even find its way into water sources, contributing to water pollution. As an industry, we have a responsibility to minimize our environmental footprint, and adhering to strict air quality standards is a crucial part of that commitment. Finally, there are the operational risks. Dust can be surprisingly destructive to machinery. Fine particles can infiltrate sensitive equipment, causing premature wear, electrical shorts, and costly breakdowns, leading to significant production downtime. Dust can also lead to product cross-contamination, compromising the quality and purity of our valuable rare earth and critical mineral outputs. In some cases, specific mineral dusts possess pyrophoric properties or are combustible, presenting a serious fire and explosion risk if not properly managed. ### Understanding the Unique Risks of REE & Critical Mineral Dust What makes dust from rare earth elements (REEs) and critical minerals particularly challenging? It’s their unique composition and properties. Unlike many common industrial dusts, REE and critical mineral dust can harbor additional, more severe risks. Some rare earth minerals, for example, naturally contain trace amounts of radioactive elements such as thorium and uranium. When these minerals are crushed, ground, and processed, these radioactive particles can become airborne. Inhaling or ingesting them poses a long-term radiation exposure risk to workers. Furthermore, certain critical minerals can exhibit pyrophoric properties, meaning they can spontaneously ignite when exposed to air. Others are highly chemically reactive. These characteristics demand specialized handling and dust control strategies that go beyond conventional methods to prevent fires, explosions, and hazardous chemical reactions. The sheer fineness of the particulate matter (PM2.5 – particles 2.5 micrometers or less in diameter) generated during processing is another significant concern. These ultra-fine particles are easily inhaled and can penetrate deep into the lungs, where they can cause more severe health effects than larger dust particles. Protecting our team from these microscopic threats is paramount. ### Regulatory Compliance and Financial Implications Operating a mining or processing facility in the United States means navigating a complex web of regulations designed to protect workers and the environment. Agencies like the Occupational Safety and Health Administration (OSHA), the Environmental Protection Agency (EPA), and the Mine Safety and Health Administration (MSHA) set stringent standards for air quality and dust control. Non-compliance with these regulations isn’t just a hypothetical risk; it carries very real and substantial financial penalties. Fines can quickly accumulate, but the costs don’t stop there. Regulatory violations can lead to mandated production downtime while issues are rectified, resulting in lost product and revenue. Beyond fines, facilities can face increased worker compensation claims due to dust-related illnesses, legal fees, and damage to their reputation. Investing in effective **Rare Earth & Critical Mineral Dust Control** isn’t just about doing the right thing; it’s a smart business decision that protects our financial stability and ensures our long-term viability. We believe in proactive compliance to avoid these costly pitfalls. ## A Step-by-Step Guide to Implementing Dust Control Establishing a robust dust control program in a rare earth or critical mineral processing facility requires a systematic approach. It’s not about quick fixes but about understanding your specific challenges and implementing custom solutions. We’ve developed a practical framework to guide you. ### Step 1: Assess Your Dust Generation Points Before we can control dust, we need to know where it’s coming from and how much is being generated. This initial assessment is the bedrock of an effective dust control strategy. We start by thoroughly identifying all potential dust sources within our facility. This often includes: - **Crushers and Grinders:** These are primary dust generators as raw materials are broken down. - **Conveyor Transfer Points:** Every time material drops from one conveyor to another, dust plumes can be released. - **Screening Stations:** Vibrating screens agitate material, creating significant dust. - **Bagging Areas:** Packaging finished products can release fine dust into the air. - **Vehicle Movement:** Haul trucks and other vehicles on unpaved roads or within dusty areas can stir up considerable amounts of dust. Once we’ve identified these points, we move to air quality monitoring and dust sampling. This involves using specialized equipment to measure airborne particulate levels, often focusing on PM2.5 and respirable dust fractions. Dust sampling allows us to analyze the composition of the dust, helping us understand its unique hazards (e.g., presence of silica, heavy metals, or radioactive elements). This data is crucial for designing the most effective control measures. ### Step 2: Engineer Controls at the Source The most effective approach to **Rare Earth & Critical Mineral Dust Control** is to prevent dust from becoming airborne in the first place, or to capture it as close to the source as possible. This is where engineering controls come into play. One of our primary tools is **Local Exhaust Ventilation (LEV)**. This involves designing and installing a system of capture hoods positioned directly at the dust generation points. These hoods connect to ductwork that draws dust-laden air away from the source, preventing it from dispersing into the general work environment. Properly designed enclosures around crushers, screens, or conveyor transfer points can significantly improve the effectiveness of LEV systems by containing the dust before it can escape. Another powerful technique is **wet suppression**. This method uses water or other liquid agents to bind dust particles together, making them too heavy to become airborne. - **Water Sprays:** Strategically placed nozzles can spray a fine mist onto material at transfer points, crushers, and stockpiles. - **Misting Systems:** Even finer mist, often with added surfactants, can be used to capture smaller particles. - **Foam Agents:** For certain applications, foam can be highly effective at encapsulating dust particles, particularly in crushers or at conveyor discharge points. The key to successful engineering controls is customization. Every facility and every process has unique challenges. That’s why we at Sly, LLC emphasize custom-engineered solutions. Our team of experts can design systems custom to your specific needs, ensuring maximum effectiveness. Learn more about our approach to custom engineering services. ### Step 3: Implement Administrative and Work Practice Controls While engineering controls form the backbone of a dust management program, administrative and work practice controls are equally vital. These are the procedures and behaviors that ensure the engineering controls operate effectively and that workers are protected. **Regular housekeeping** is paramount. Dust accumulation on surfaces can become re-entrained in the air with even minor disturbances. We advocate for methods like wet sweeping and industrial HEPA vacuuming over dry sweeping, which can inadvertently kick dust back into the air. Maintaining a clean work environment reduces overall dust levels and minimizes exposure risks. **Worker training programs** are non-negotiable. Our team members need to understand the hazards of mineral dust, how dust control systems work, and their role in maintaining their effectiveness. This includes proper use of controls, reporting malfunctions, and adhering to safety protocols. Establishing **designated clean zones** where dust-generating activities are restricted can help protect administrative areas and break rooms. Finally, **Personal Protective Equipment (PPE)**, particularly appropriate respirators, is the last line of defense for workers when engineering and administrative controls cannot completely eliminate exposure. Selecting the right type of respirator, ensuring proper fit, and providing regular training on its use and maintenance are critical. ## Key Technologies for Rare Earth & Critical Mineral Dust Control Choosing the right equipment is a critical decision in any **Rare Earth & Critical Mineral Dust Control** strategy. At Sly, LLC, with our century-plus of experience since 1902, we understand that no two dust challenges are exactly alike. We design and manufacture high-quality, reliable air pollution control systems specifically engineered for demanding industrial applications. ### Dry Collection Systems: Baghouse Dust Collectors For many dry mineral processing applications, baghouse dust collectors are the workhorses of air pollution control. These systems are renowned for their high-efficiency capture capabilities, often exceeding 99.9% for even very fine particulate matter. At the heart of a baghouse are its fabric filters, which physically capture dust particles as air passes through. We offer various types, including pulse-jet collectors, which use bursts of compressed air to clean the filters, and shaker collectors, which mechanically shake the filters. The selection of the appropriate filter media is crucial, depending on factors like dust particle size, abrasiveness, temperature, and chemical composition. For rare earth and critical mineral dust, we often recommend specialized high-efficiency media capable of handling fine, sometimes abrasive, or even slightly reactive dusts. Our expertise in baghouse design ensures that we provide robust, no-compromise solutions custom to the unique demands of your operation. From initial design to manufacturing, we focus on delivering systems that provide the cleanest air possible. You can explore our range of baghouse solutions here: More info about baghouse dust collectors. Here’s a comparison of common filter media for mineral dust applications: | Filter Media Type | Advantages | Disadvantages | Common Applications | |---|---|---|---| | Polyester | Good general-purpose, cost-effective | Limited temperature, susceptible to hydrolysis | General mineral dust, cement, non-abrasive dust | | Polypropylene | Good chemical resistance, moisture resistance | Lower temperature limit | Wet or corrosive dusts, chemical processing | | Aramid (Nomex) | High temperature resistance, good abrasion | Hydrolysis sensitive, moderate chemical resistance | High-temperature mineral processing, kilns | | Fiberglass | Very high temperature, good chemical resistance | Brittle, poor abrasion resistance | Very hot gases, acid environments | | PTFE (Teflon) | Excellent chemical, temperature, and abrasion | High cost, lower strength | Highly corrosive, high-temp, sticky dust | | P84 | High temperature, good chemical, fine particle | High cost, susceptible to hydrolysis | Fine, hot dusts, specific chemical processes | ### Wet Collection Systems: Scrubbers For certain applications, particularly those involving sticky, combustible, or chemically reactive dusts, wet scrubbers offer an ideal solution. Unlike dry collectors, scrubbers use a liquid (typically water) to capture particulate matter. We offer various types of wet scrubbers, including: - **Sly Impinjet® Scrubbers:** Collects particulates and absorb vapors and gases. Low water consumption and minimum pressure drop achieve high collection efficiencies (99% @5 microns). - **Venturi Scrubbers:** Known for their high efficiency in capturing sub-micron particles, they accelerate dust-laden gas through a venturi throat, atomizing the scrubbing liquid and causing intense mixing and particle capture. - **Packed-Bed Scrubbers:** These are excellent for removing gaseous contaminants in addition to particulates, as gas passes through a packed bed of media wetted with a scrubbing liquid. Wet scrubbers are particularly advantageous when dealing with mineral dusts that are pyrophoric or have a risk of explosion, as the water extinguishes sparks and renders combustible dust inert. They can also handle mixed dust streams, where both particulate and gaseous contaminants need to be removed, and can even be used for chemical neutralization if the dust is acidic or alkaline. Our wet scrubbers are designed for reliability and high performance, even in the toughest environments. Learn more about our wet scrubber solutions: [More info about wet scrubbers](https://www.slyinc.com/products/wet-scrubbers). ### Choosing the Right Equipment for Rare Earth & Critical Mineral Dust Control The decision between a baghouse and a wet scrubber, or even a combination of both, depends on several critical factors specific to your operation: - **Dust Characteristics:** What is the particle size distribution? Is the dust abrasive, sticky, or hygroscopic? Does it contain radioactive elements or exhibit pyrophoric properties? - **Combustibility:** Is the dust combustible or explosive? Wet scrubbers often mitigate this risk more effectively. - **Moisture Content:** Is the gas stream humid? Baghouses perform best with dry gas streams, while scrubbers can handle moisture. - **Chemical Properties:** Is the dust chemically reactive, acidic, or alkaline? This influences material selection for the collector and the scrubbing liquid. - **Airflow Requirements:** The volume of air to be treated dictates the size and capacity of the system. - **Capital Cost vs. Operational Cost:** While the initial investment is important, we also consider long-term operating costs, including energy consumption, maintenance, and disposal of collected material (dry dust vs. wet sludge). Our team at Sly, LLC specializes in analyzing these factors to recommend and design the optimal **Rare Earth & Critical Mineral Dust Control** system for your facility in Ohio or Mississippi. We pride ourselves on delivering reliable, no-compromise solutions that meet your specific needs for the cleanest air possible. ## Best Practices for System Maintenance and Monitoring A state-of-the-art dust control system is only as effective as its maintenance program. Neglecting regular upkeep can lead to decreased performance, increased emissions, higher operating costs, and eventual system failure. We believe in a proactive approach to ensure your **Rare Earth & Critical Mineral Dust Control** system consistently operates at peak efficiency. ### Creating a Proactive Maintenance Schedule Developing and adhering to a comprehensive maintenance schedule is crucial. This isn’t just about fixing things when they break; it’s about preventing failures before they occur. Here’s a general checklist that can be adapted for daily, weekly, and monthly tasks: **Daily Dust Collector Maintenance Checklist:** - Check differential pressure gauge readings. Note any significant deviations from normal operating range. - Visually inspect fan and motor for unusual noises or vibrations. - Verify proper operation of hopper discharge systems (rotary valves, screw conveyors). - Check for any visible dust leaks from the collector or ductwork. **Weekly Dust Collector Maintenance Checklist:** - Inspect filter elements (bags or cartridges) for signs of wear, tears, or excessive dust cake buildup. - Check diaphragm valves and pulse-jet cleaning system for proper cycling (if applicable). - Inspect solenoid valves and compressed air lines for leaks. - Examine fan belts for tension and wear. - Check oil levels in gearboxes (if applicable). - Clean dust accumulated on the exterior of the collector and surrounding areas. **Monthly Dust Collector Maintenance Checklist:** - Conduct a thorough inspection of all ductwork for corrosion, holes, or blockages. - Check structural components for integrity and signs of fatigue. - Inspect paint and coatings for deterioration. - Verify calibration of pressure gauges and other instrumentation. - Perform a more detailed inspection of filter cages for damage. - Check electrical connections and wiring. - Review maintenance logs for recurring issues. This proactive approach helps identify minor issues before they escalate into major problems, ensuring continuous and efficient **Rare Earth & Critical Mineral Dust Control**. ### Monitoring Performance for Optimal Rare Earth & Critical Mineral Dust Control Beyond scheduled maintenance, continuous monitoring provides real-time insights into your system’s health and performance. - **Differential Pressure Gauges:** These are critical indicators of filter condition. A rising differential pressure typically means the filters are becoming clogged, while a sudden drop could indicate a torn filter. Consistent monitoring helps optimize cleaning cycles and predict filter replacement needs. - **Airflow Sensors:** Ensuring the correct airflow through the system is vital for effective capture velocity at the hoods. Deviations can indicate blockages or fan issues. - **Emission Monitoring:** For larger systems or those handling highly hazardous dusts, continuous emission monitoring systems (CEMS) can track particulate emissions, ensuring compliance with environmental regulations. - **Record Keeping:** Meticulous records of maintenance activities, pressure readings, and any incidents are invaluable. They help identify trends, troubleshoot problems, and demonstrate compliance during audits. - **Continuous Improvement:** We believe in using monitoring data to drive continuous improvement. By analyzing performance trends, we can fine-tune operating parameters, adjust maintenance schedules, and even identify opportunities for system upgrades to further improve **Rare Earth & Critical Mineral Dust Control**. ## Frequently Asked Questions about Mineral Dust Control We often hear similar questions from facilities dealing with the challenges of mineral dust. Here are some of the most common ones we address: ### What makes rare earth element dust more hazardous than other types of mineral dust? Rare earth element (REE) dust presents unique hazards due to several factors. Firstly, some REEs are naturally associated with radioactive elements like thorium and uranium. When REE-bearing minerals are processed, these radioactive components can become airborne, posing internal radiation exposure risks if inhaled or ingested. Secondly, the fine particulate matter (PM2.5) generated during REE processing can penetrate deep into the lungs, leading to severe respiratory illnesses. Additionally, some REE compounds can be chemically reactive or even pyrophoric, meaning they can spontaneously ignite, adding fire and explosion risks that are not typically associated with common industrial dusts. These combined characteristics necessitate a more rigorous and specialized approach to **Rare Earth & Critical Mineral Dust Control**. ### How do I choose between a wet scrubber and a dry baghouse collector? The choice between a wet scrubber and a dry baghouse collector depends heavily on the specific characteristics of your dust and your operational environment. - **Baghouse Dust Collectors** are generally preferred for dry, non-combustible dusts, offering very high collection efficiencies for fine particulates. They are typically more energy-efficient for large air volumes and produce a dry waste product. - **Wet Scrubbers** are ideal for dusts that are sticky, hygroscopic, combustible, or explosive, as the water neutralizes these risks. They are also excellent for gas streams that are hot or contain corrosive gases in addition to particulates. However, they produce a wet sludge that requires further treatment and disposal, and can be less efficient for very fine, non-combustible dusts compared to a well-maintained baghouse. Our team at Sly, LLC can help you evaluate your specific dust characteristics, process conditions, and regulatory requirements to determine the most effective and reliable solution for your **Rare Earth & Critical Mineral Dust Control** needs. ### What are the first steps to take if I notice a dust problem in my facility? If you’re noticing a dust problem, the very first step is to conduct a thorough assessment. This involves: 1. **Identify Sources:** Pinpoint exactly where the dust is being generated. Walk through your facility and observe operations like crushing, grinding, conveying, and bagging. 2. **Characterize the Dust:** Understand what kind of dust it is. Is it fine? Coarse? Potentially radioactive? Combustible? This might require professional dust sampling and analysis. 3. **Assess Exposure:** Determine who is exposed to the dust and at what levels. Air monitoring can help quantify this. 4. **Review Current Controls:** Evaluate if existing dust control measures are inadequate or malfunctioning. Once you have this information, you can begin to implement targeted engineering controls at the source, such as local exhaust ventilation or wet suppression, and reinforce administrative controls like improved housekeeping and proper PPE usage. Don’t hesitate to consult with experts like us at Sly, LLC to help you with this assessment and guide you toward a comprehensive solution for your **Rare Earth & Critical Mineral Dust Control**. ## Conclusion: Partnering for a Cleaner, Safer Operation The stakes are incredibly high when it comes to **Rare Earth & Critical Mineral Dust Control**. From safeguarding the health of our invaluable workforce to ensuring compliance with strict environmental regulations and maintaining operational efficiency, effective dust management is not just a best practice—it’s an absolute necessity. We’ve explored the critical strategies: implementing robust engineering controls at the source, selecting between advanced wet and dry collection systems, and maintaining vigilance through proactive maintenance and monitoring. At Sly, LLC, we understand these challenges deeply. For over a century, since 1902, we have been a pioneer in industrial air pollution control, designing and manufacturing custom, high-quality systems like baghouses and wet scrubbers. Our USP is delivering reliable, no-compromise solutions for the cleanest air possible, ensuring your facility in Ohio or Mississippi can operate safely, compliantly, and productively. We don’t just sell equipment; we partner with you to engineer the precise solution your unique operation demands. Don’t let mineral dust compromise your people, your profits, or your reputation. Let us help you achieve superior **Rare Earth & Critical Mineral Dust Control**. Contact us to discuss your mining and mineral processing application. **Categories:** Dust Collection System **Tags:** OSHA Compliance --- ### [Don't Get Dusted: How to Master Lithium Dust Collection for Safety and Efficiency](https://www.slyinc.com/blog/dont-get-dusted-how-to-master-lithium-dust-collection-for-safety-and-efficiency/) **Published:** July 20, 2026 **Author:** Al Moretti **Excerpt:** Protect your plant from hazardous lithium dust. Master lithium dust collection for safety, efficiency, and resource recovery. **Content:** ## Why Lithium Dust Collection is Critical for Modern Battery Production **Lithium dust collection** is the process of capturing and controlling airborne lithium particles generated during mining, processing, and battery manufacturing operations. It addresses three critical needs: 1. **Safety** – Prevents fires and explosions from highly combustible lithium dust 2. **Health Protection** – Removes hazardous particulates that cause respiratory issues and skin irritation 3. **Resource Recovery** – Recaptures valuable lithium material for recycling back into production The lithium market is booming. With electric vehicles and consumer electronics driving demand, the global lithium market is projected to grow at 12% annually through 2030. Rechargeable lithium batteries now account for 74% of global lithium demand. But here’s the challenge: **lithium dust is both precious and dangerous**. When lithium is milled down to micron-sized particles during processing, it becomes exceptionally light and prone to becoming airborne. These same properties that make lithium ideal for batteries—its low density and high reactivity—create serious safety hazards in processing facilities. Metal oxides in lithium dust cause health problems. The dust reacts violently with moisture. It’s highly combustible and can ignite at extremely high temperatures. In some cases, lithium nanoparticles can even explode without an external ignition source. Yet this hazardous material is also valuable. Proper dust collection doesn’t just protect workers and equipment—it recovers lithium carbonate and hydroxide particles that can be recycled back into manufacturing. The solution requires specialized dust collection systems designed specifically for lithium’s unique properties. ![Infographic showing the key properties of lithium dust: extremely lightweight (density of 0.534 g/cm³, the lightest of all metals), highly combustible (burns at 2,000°C or 3,632°F), reactive with moisture (produces flammable hydrogen gas), particle size ranges from a few micrometers to several hundred micrometers, and valuable for resource recovery (lithium carbonate and hydroxide particles) - lithium dust collection infographic 4_facts_emoji_grey](https://images.bannerbear.com/direct/4mGpW3zwpg0ZK0AxQw/requests/000/118/218/437/ZwVbKlDe9Y8yXJo7z8moa3jPM/603eda7a1bac9295bd161d957778044c53118f35.jpg "Infographic showing the key properties of lithium dust: extremely lightweight (density of 0.534 g/cm³, the lightest of all metals), highly combustible (burns at 2,000°C or 3,632°F), reactive with moisture (produces flammable hydrogen gas), particle size ranges from a few micrometers to several hundred micrometers, and valuable for resource recovery (lithium carbonate and hydroxide particles) - lithium dust collection infographic 4_facts_emoji_grey") ## Why Lithium Dust is a Unique and Dangerous Challenge Lithium, the lightest of all metals, holds a unique position on the periodic table. Its small atomic size and capabilities are precisely what make it an ideal material for high-voltage, high-charge-storage batteries. However, these very properties also contribute to its hazardous nature when processed into fine dust. When lithium is processed, especially during milling and grinding, it creates incredibly fine dust particles, ranging from a few micrometers down to five microns or even smaller. This fine particulate nature, combined with lithium’s inherent properties, makes it a significant industrial challenge. Lithium dust is exceptionally lightweight, with a density of approximately 0.534 g/cm3. This means it can easily become airborne, spreading throughout a facility and increasing exposure risks. Beyond its physical properties, lithium is highly reactive to its surrounding environment. When it comes into contact with moisture, steam, or water, it reacts vigorously, producing flammable hydrogen gas. This reaction alone presents a severe fire and explosion risk. The hazards don’t stop there. Metal oxides present in lithium dust can cause health problems, particularly during mining and grinding operations. Direct contact with lithium dust can lead to irritation and chemical burns to the skin and eyes. Inhalation of these fine particulates, especially nanoparticles, poses a serious respiratory risk to workers. ### The Fire and Explosion Risk The combustibility of lithium dust is perhaps its most alarming characteristic. Since lithium is a metal, its dust is highly combustible. Lithium fires are categorized as Class D fires, which are reserved for combustible metals. These fires burn at incredibly high temperatures, often reaching 2,000° C (3,632° F). Imagine trying to put out a fire that hot with a regular extinguisher – it’s like bringing a squirt gun to a volcano! ![Class D fire warning sign - lithium dust collection](https://images.bannerbear.com/direct/4mGpW3zwpg0ZK0AxQw/requests/000/118/218/450/kW7yv9eBdzpvGdADQNLRwa5Px/cc8d7e2d14621e729a78abc5ac59b2b148ac87f6.jpg "Class D fire warning sign - lithium dust collection") What makes it even more dangerous is its reactivity with water. Using water or standard extinguishers on a lithium fire can actually exacerbate the situation, producing more flammable hydrogen gas and intensifying the blaze. This is why specialized Class D extinguishers are absolutely essential. Furthermore, the tiny size of lithium dust particles increases its surface area, making it more prone to ignition and enabling it to burn faster. Nanoparticles of lithium are particularly hazardous; due to their high specific surface area, they can generate an explosion even without an external ignition source. This means a seemingly calm environment can quickly become a dangerous one if not properly managed. To prevent such catastrophic events, regulations such as those issued by the National Fire Protection Association (NFPA) require facilities to test dust for its explosion potential, as measured by the Kst value. Understanding this value is critical for designing appropriate safety measures and containment systems, ensuring we never underestimate the explosive power of fine lithium dust. ## The Dual Priorities: Safety and Resource Recovery When we talk about **lithium dust collection**, we’re addressing a dual challenge: protecting people and processes while also preserving a valuable resource. It’s a balancing act where safety and efficiency go hand-in-hand. On the one hand, effective dust collection is paramount for plant safety. It directly mitigates the severe risks of fire and explosion posed by combustible lithium dust. By capturing these airborne particles, we dramatically reduce the potential for ignition, protecting personnel, equipment, and the entire facility. Beyond explosion prevention, proper dust control significantly improves air quality within the plant, creating a healthier working environment and decreasing potential health hazards associated with inhaling metal oxides or experiencing skin and eye irritation. On the other hand, the material we’re collecting is incredibly valuable. Lithium carbonate and lithium hydroxide particles, which become airborne during processing, are destined for industrial use, primarily in battery manufacturing. Capturing this dust isn’t just about waste management; it’s about recovering a precious resource that can be recycled back into the manufacturing process. This resource recovery translates directly into improved process efficiencies and a better return on investment, making **lithium dust collection** a smart economic decision as well as a safety imperative. ### Meeting Regulatory and Safety Standards Navigating industrial dust often feels like a maze of regulations, but when it comes to lithium dust, these standards are our guiding lights to safety. Compliance isn’t just about avoiding fines; it’s about saving lives and preventing catastrophic events. Here are some key safety considerations we prioritize: - **NFPA Standards:** The National Fire Protection Association (NFPA) sets crucial benchmarks for handling combustible materials. For lithium, NFPA 484, which addresses Combustible Metals, is particularly relevant. It outlines requirements for the safe handling, storage, and processing of combustible metals to prevent fires and explosions. - **Kst Value Testing:** As mentioned earlier, specific regulations require facilities to test dust for its explosion potential (Kst value). This scientific assessment helps us understand the severity of a potential dust explosion and design appropriate protection systems. - **Good Housekeeping Practices:** While advanced collection systems are vital, basic cleanliness remains a cornerstone of dust safety. Regular cleaning and preventing dust accumulation on surfaces are critical to minimizing the risk of fire and explosion. - **Maintenance Protocols:** Consistent maintenance of dust collection equipment ensures peak efficiency. This includes regular inspection, cleaning, and replacement of filters and other components to prevent system failures that could lead to dangerous dust releases. By adhering to these rigorous standards and implementing robust safety protocols, we ensure that our facilities and the processes within them are as safe and efficient as possible, allowing us to harness the power of lithium without succumbing to its dangers. ## Mastering the Process: A Guide to Lithium Dust Collection **Lithium dust collection** isn’t a one-size-fits-all solution; it’s a carefully orchestrated process that must account for every stage where dust can be generated. From the moment lithium is extracted to its final packaging, airborne particles are a constant concern. Dust generation points occur throughout the entire lithium process stream: - **Mining:** Whether it’s hard rock blasting and drilling or the evaporation ponds used for brine extraction, the initial stages of lithium acquisition can release significant amounts of particulate matter. - **Crushing and Grinding:** Once extracted, lithium-bearing ores are crushed and milled to reduce particle size. This mechanical processing is a major source of fine lithium dust. - **Milling:** Further refining, in which lithium is milled to micron levels (sometimes five microns or fewer), creates exceptionally light and reactive dust that is highly prone to becoming airborne. - **Drying and Packaging:** Concentrated lithium slurries are dried, and the resulting powders are packaged, both of which can lead to dust emissions if not properly contained. - **Battery Manufacturing:** Even in the later stages of battery component creation, handling and processing lithium materials can generate nuisance dust or valuable product that needs to be recovered. In all these stages, the goal of dust collection can shift. Sometimes, we’re simply dealing with “nuisance dust” – particles that pose a health or safety risk but aren’t necessarily part of the final product. Other times, the collected dust is precisely the valuable lithium carbonate or hydroxide particles destined for industrial use, turning a potential hazard into a means of product recovery. ### Key Design Factors for Lithium Dust Collection Systems Designing an effective **lithium dust collection** system is a complex task that requires meticulous attention to detail and a deep understanding of lithium’s unique characteristics. It’s not just about sucking up dust; it’s about engineering a system that can safely and efficiently handle a highly reactive, combustible, and valuable material. When we design these critical systems, we consider several key factors: - **Volume for Sizing:** Accurately determining the air volume to be treated is fundamental for sizing the collector properly. Too small, and it won’t be effective; too large, and it’s inefficient. - **Inlet Location and Placement:** Given the relatively light bulk density of lithium dust, the placement and design of the inlet are crucial. We need to ensure efficient capture without causing premature wear or inefficient dust loading. - **Air-to-Cloth Ratio vs. Interstitial Velocity:** These are technical terms that dictate how much air flows through the filter media compared to the filter area. Optimizing these ratios ensures effective filtration and proper dust cake formation, which is vital for efficient cleaning cycles and filter longevity. - **Filter Media Selection:** This is perhaps one of the most critical decisions. The media and bag type must be chosen based on the specific characteristics of the lithium dust, such as particle size, moisture levels, and temperature. The right media improves dust cake release and ensures optimal filtration efficiency. - **Explosion-Proof Venting and Electrical Systems:** Because lithium dust is highly combustible, explosion protection is non-negotiable. Our systems incorporate explosion-proof venting, often with specialized panels, to safely release pressure in the event of an explosion. Electrical components are also rated for hazardous environments to prevent ignition sources. - **Voltage Requirements Based on Installation Location:** Electrical requirements can vary depending on the specific facility and local codes, which we carefully account for during design and installation. - **Cleaning Cycles:** Specialized designs consider the timing for cleaning cycles to maintain optimal performance and prevent excessive dust buildup on filters. - **Security for Proprietary Processes:** For clients with unique lithium processing methods, we offer proprietary system designs that not only overcome process challenges but also maintain the security and confidentiality of their operations. We believe that capturing every micron of lithium is essential for both safety and resource recovery. For more in-depth information on these critical design considerations, we encourage you to Download the white paper on capturing lithium dust. It’s a deep dive into how we tackle these challenges head-on. ## Choosing the Right Dust Collection System Selecting the ideal **lithium dust collection** system is about more than just picking a piece of equipment off a shelf. It requires a custom approach, recognizing that every lithium processing operation has its unique nuances. We pride ourselves on designing solutions that fit like a glove, rather than trying to force a square peg into a round hole. Our process starts with a thorough understanding of your specific process requirements. What are your production volumes? What are the ambient conditions? What are your regulatory obligations? These questions help us define the scope and performance criteria for your system. Crucially, we dig into the exact characteristics of your lithium dust. Is it fine or coarse? What are its moisture levels? How does it behave at different temperatures? Its reactivity and combustibility are always at the forefront of our minds. For instance, if your dust has higher moisture levels, this will significantly influence our filter media selection to ensure optimal dust cake release and prevent filter blinding. We also consider the particulate loading – how much dust is being generated – to size the system correctly for continuous, efficient operation. ### Sly Solutions for Lithium Dust Collection At Sly, LLC, we’ve been pioneers in air pollution control since 1902, with a legacy that includes the first cloth-type dust collector. For over 20 years, we’ve been assisting with lithium processing dust collection, bringing over 150 years of industry experience to every project. Our expertise means lithium processors can count on us with confidence, thanks to our reputation for service and quality. When it comes to **lithium dust collection**, our solutions are engineered for precision and reliability. We primarily focus on dry collection technologies, which are ideal for recovering valuable dry lithium products and avoiding the reactivity of lithium with water. Our offerings include: - **CBR Pulse Jet Collectors (Baghouses):** These are the workhorses of industrial dust collection. Our baghouses are custom-designed to handle the unique properties of lithium dust. Contaminated air is drawn through fabric filters that trap the dust, while filtered air is safely discharged. Accumulated dust is then released and collected for disposal or, more often, for recycling in the case of lithium. We engineer features like specific inlet placement and optimized air-to-cloth ratios to ensure maximum capture efficiency and filter life. - **Loading Spouts:** For containing dust during the transfer of lithium material into containers or transportation, our loading spouts are designed to minimize fugitive emissions, keeping both the air clean and the valuable product contained. Our systems are not just off-the-shelf products. We provide custom system design, fabrication, and installation, ensuring that every component is optimized for your specific challenges. This system integration and customization are key to overcoming the complexities of lithium dust, improving process efficiencies, and maintaining exceptional air quality within your facility. ### Why Pleated Bags Are the Superior Choice In baghouse filtration, not all filters are created equal. You might hear about “pleated bags” and “cartridges” almost interchangeably, but let us assure you, they are NOT the same; it’s all in the design. This distinction is particularly important when dealing with the fine, reactive, and combustible nature of lithium dust. The design differences between pleated bags and traditional cartridge filters have significant performance implications: - **Dust Cake Release:** Our pleated bags are engineered to improve dust cake release. This is crucial for lithium dust, which can be sticky or prone to agglomeration. Efficient dust cake shedding ensures that the filters remain clean and maintain optimal airflow, preventing pressure drops and maintaining collection efficiency. - **Filter Lifespan:** A pleated bag, correctly specified for lithium dust characteristics and moisture levels, can offer a longer filter lifespan. This reduces maintenance frequency and operational costs, a welcome relief in any demanding industrial setting. - **Air-to-Cloth Ratio and Efficiency:** The pleated design allows for a greater amount of filter media in a smaller footprint compared to traditional bags. This higher air-to-cloth ratio means more efficient filtration and greater capacity for handling high particulate loadings, all while maintaining excellent capture rates for even the finest lithium particles. We’ve seen the difference firsthand. For a detailed comparison and to understand why pleated bags often emerge as the superior choice for **lithium dust collection**, we invite you to Download the case study on pleated bags for lithium dust collection. It highlights how intelligent filter design can make a tangible impact on safety, efficiency, and overall system performance. ## Frequently Asked Questions about Lithium Dust We understand that working with lithium dust can raise many questions, especially given its unique properties. Here are answers to some of the most common inquiries we receive: ### What makes lithium dust so hazardous? Lithium dust is hazardous due to its high reactivity with moisture, which produces flammable hydrogen gas, and its fine particle size, which makes it highly combustible and a respiratory risk. Nanoparticles can even explode without an external ignition source. Its extreme combustibility means it can burn at temperatures up to 2,000° C (3,632° F), posing severe fire and explosion threats. Additionally, metal oxides in the dust can cause health problems, including irritation and chemical burns to the skin and eyes, and respiratory issues upon inhalation. ### What type of fire extinguisher is required for lithium fires? Lithium fires are classified as Class D fires (combustible metals) and require a specialized Class D fire extinguisher. These extinguishers typically use agents like copper powder or graphite-based compounds that smother the fire and absorb heat without reacting with the lithium. It is critical never to use water, CO2, foam, or standard ABC/BC dry chemical extinguishers on a lithium fire, as these can react violently with the burning metal, intensifying the fire and potentially causing explosions. ### What are the main goals of a lithium dust collection system? The primary goals of a **lithium dust collection** system are multifaceted: 1. **Safety:** To ensure worker safety by mitigating the severe risks of fire, explosion, and health hazards associated with combustible and reactive lithium dust. 2. **Compliance:** To meet stringent air quality regulations and NFPA standards, preventing environmental pollution and ensuring a safe working environment. 3. **Resource Recovery:** To improve process efficiency and economic viability by capturing and recycling valuable lithium particles (e.g., lithium carbonate/hydroxide) back into the manufacturing stream, turning a potential waste product into a recovered resource. ## Conclusion The journey of **lithium dust collection** is one of balancing immense opportunity with significant responsibility. As the demand for lithium continues its explosive growth, driven by the electrification of our world, the challenges posed by its fine, reactive, and combustible dust become increasingly critical. We’ve seen how lithium’s unique properties necessitate specialized solutions, where generic approaches simply won’t suffice. Mastering lithium dust collection means understanding its dual nature: a precious resource on one hand and a potent safety hazard on the other. It demands a meticulous focus on protecting personnel from health risks, mitigating the potential for fires and explosions, and simultaneously recovering valuable material to improve process efficiency and sustainability. This is where our expertise at Sly, LLC shines. With over a century of experience in air pollution control and decades dedicated to the specific complexities of lithium processing, we are uniquely positioned to be your trusted partner. We don’t just sell equipment; we design, fabricate, and install custom systems precisely engineered for your unique operational challenges, ensuring the cleanest possible air and the safest environment. Don’t let lithium dust become a hazard or a missed opportunity. Let us help you steer these complexities with confidence. Improve your process efficiencies and the air quality within your facility. Contact us today for a proprietary system design that can overcome your process challenges. **Categories:** Baghouse System --- ### [How to Replace Your Baghouse Filters for Optimal Performance](https://www.slyinc.com/blog/how-to-replace-your-baghouse-filters-for-optimal-performance/) **Published:** July 10, 2026 **Author:** Al Moretti **Excerpt:** Learn baghouse filter replacement: signs, media selection, step-by-step guide, safety & maintenance for optimal performance. **Content:** ## Why Baghouse Filter Replacement Matters for Your Facility **Baghouse filter replacement** is one of the most important maintenance tasks in any industrial dust collection system. Done right, it keeps your air clean, your system efficient, and your facility in compliance with EPA regulations. Done wrong, it leads to costly downtime, early filter failure, and potential regulatory penalties. Here is a quick overview of the baghouse filter replacement process: 1. **Identify the right time to replace** – Watch for rising differential pressure, visible dust emissions, or reduced airflow. 2. **Select the correct filter media** – Match the material (polyester, aramid, PTFE, fiberglass) to your temperature, chemical, and dust load conditions. 3. **Prepare for the change-out** – Lock out/tag out the system, gather PPE, tools, and replacement bags and cages. 4. **Remove old bags and inspect** – Clear dust cake, dispose of old bags, and inspect the tubesheet and cages for wear or corrosion. 5. **Install new filter bags** – Seat snap bands correctly, align pleated bags or traditional bags per your baghouse type (pulse jet, shaker, or reverse air). 6. **Start up and monitor** – Run a leak test, precoat if needed, and track differential pressure to confirm proper performance. Choosing the wrong filter media, skipping inspection steps, or rushing installation are the most common causes of premature filter failure. This guide walks you through each step so you get it right the first time. Baghouses are the particulate-control stage in many industrial air pollution control systems. In some applications, that dry collection stage is followed by wet treatment equipment to address acid gases or other contaminants before the exhaust reaches the stack. That system-level view matters because poor bag performance can affect airflow, upstream process capture, and downstream compliance equipment. I’m Mike Eaton, Director of Marketing for Carrier Process Equipment Group, which includes Sly, a 150+ year old air pollution control company with deep expertise in baghouse design, filter selection, and aftermarket services, including **baghouse filter replacement** programs for complex industrial applications. In this guide, I’ll walk you through everything you need to know to replace your baghouse filters correctly and keep your system running at peak performance. For a general background on how these systems work, the [baghouse article on Wikipedia](https://en.wikipedia.org/wiki/Baghouse) is a useful external reference alongside your equipment manual and site-specific operating procedures. ## When and Why to Perform Baghouse Filter Replacement In industrial air pollution control, a baghouse is only as good as its filters. While the heavy steel housing and the pulse-jet cleaning system are built to last for decades, the filter bags are the consumable part that directly controls particulate capture and system resistance. Regular **baghouse filter replacement** is not just a maintenance suggestion. It is an operating requirement for stable airflow, predictable pressure drop, and reliable emissions performance. There are [3 reasons to replace your dust collector filter bags](https://www.slyinc.com/blog/3-reasons-to-replace-your-dust-collector-filter-bags/) that every plant manager should keep in mind: maintaining system efficiency, protecting downstream equipment, and ensuring environmental compliance. The problem is usually straightforward. As dust embeds deeper into the media and can no longer be released by cleaning pulses, the bags become blinded. The mechanism is rising differential pressure, reduced air volume, and poorer capture at hoods or pickup points. The solution is to replace the bags before the restriction causes process upset, emissions issues, or unnecessary fan energy use. This matters even more in facilities that use a baghouse as one stage of a larger air pollution control train. For example, particulates are often removed first, then a wet scrubber or other downstream equipment handles acid gases or process vapors. If the baghouse is overloaded or leaking, the rest of the system may not perform as designed. Furthermore, operating with compromised filters puts you at risk of violating strict EPA regulations. Modern standards like the Mercury and Air Toxics Standards (MATS), Boiler MACT, and various NESHAPs for industries like cement and power generation require nearly zero visible emissions. Even a small pinhole leak can lead to a black stack event and costly enforcement action. For regulatory background, the [U.S. Environmental Protection Agency](https://www.epa.gov/) is the primary source for current federal air rules and guidance. ### Signs It Is Time for Baghouse Filter Replacement The most common question we hear is: “How do I know when they’re actually done?” You do not want to replace bags too early and waste money, but waiting too long can create a much larger maintenance event. [Why do my filter bags keep failing?](https://www.slyinc.com/blog/why-do-my-filter-bags-keep-failing/) Often, it is because the system was not monitored closely enough. Watch for these key indicators: - **High Differential Pressure**: If your gauge consistently reads above 6 inches of water column (w.c.) even after a cleaning cycle, the bags are likely blinded. - **Visible Emissions**: Any dust exiting the exhaust stack indicates a leak or bleed-through. - **Reduced Suction**: If dust is escaping the hoods at your process points, the filters are likely too restricted to allow proper airflow. - **Frequent Cleaning Cycles**: If your pulse-jet system is firing constantly just to maintain a steady pressure, the media is nearing the end of its life. | Industry | Typical Filter Lifespan | Primary Wear Factor | |---|---|---| | Woodworking / Sawmills | 2 – 5 Years | Dust Load / Abrasion | | Cement / Minerals | 1 – 3 Years | Abrasion / Chemical Attack | | Power Generation (Coal) | 2 – 4 Years | Temperature / Acid Gases | | Chemicals / Plastics | 1 – 2 Years | Moisture / Chemical Reaction | | Food Processing | 1 – 3 Years | Moisture / Oil Content | ### Selecting the Right Media for Baghouse Filter Replacement Selecting the right material is the single most important decision in the **baghouse filter replacement** process. If you place a standard polyester bag in a high-temperature acidic environment, it can fail very quickly. When [selecting the correct filter media](https://www.slyinc.com/blog/how-to-select-the-correct-filter-media/), we look at the four pillars of the application: temperature, chemistry, moisture, and abrasion. For many standard applications, there are [six fabric filters for regular temperature applications](https://www.slyinc.com/blog/six-fabric-filters-for-regular-temperature-applications/) that we frequently recommend. These include: - **Polyester**: The all-purpose choice. It is affordable and has good abrasion resistance, but should not be used above 275°F. - **Aramid (Nomex®)**: Excellent for high temperatures up to 400°F and is often used in asphalt plants and metal foundries. - **PTFE (Teflon®) Membrane**: This is a laminate applied to the surface of other fabrics. It provides surface filtration, allowing dust to release more easily and protecting the base fabric from chemical attack. - **Fiberglass**: Best for extreme heat up to 500°F, but very brittle. It requires careful handling and a compatible cage design. - **P84 (Polyimide)**: A high-performance fiber with a trilobal shape that increases surface area, making it well suited for sub-micron particulate capture. Finishes also play a major role. A **singed finish** helps release dust cake. Acid-resistant or oleophobic treatments are important if your process exhaust contains chemicals or moisture that could cause sticky deposits on the bags. ## Step-by-Step Guide to Replacing Industrial Filter Bags Once you have your replacement bags and cages on-site, it is time for the actual change-out. At Sly, we provide Aftermarket Services and Replacement Parts to help facilities plan and execute this work with less risk. Safety is paramount. Baghouses are often classified as confined spaces. Before anyone enters the housing, you must follow strict **Lockout/Tagout (LOTO)** procedures for the fan, rotary airlock, and cleaning controls. Any stored energy source must be isolated in accordance with your site procedures, and compressed air to the cleaning system must be bled off to prevent the valves from firing unexpectedly. This is also where a systems mindset matters. Replacing bags is not just a fabric swap. It is a controlled maintenance activity that affects fan loading, capture velocity, hopper discharge, and any downstream treatment stage tied to the collector. ### Preparing for the Change-Out Preparation is where you save time and avoid repetitive work. Do not just order bags. Check your [replacement cages](https://www.slyinc.com/products/dust-collectors/replacement-parts/dust-collector-cages/) as well. If a cage is bent, corroded, or has broken wires, it can quickly cut through your new filter bag. Ensure your team has the following: - **PPE**: High-efficiency respirators, eye protection, gloves, and disposable coveralls. - **Tools**: Snap-band tools, hand tools appropriate for your collector design, and industrial vacuums. - **Lighting**: Explosion-proof drop lights if required for the area classification. - **Replacement Inventory**: Have 5-10% extra bags on hand in case of installation damage. - **Documentation**: Bag layout, orientation notes, and maintenance records so the crew can confirm fit, quantity, and installation sequence. Also verify the collector type before starting. Pulse-jet, shaker, and reverse-air units do not all use the same loading method, bag top, or support hardware. Top-load and bottom-load systems also require different handling approaches. ### Removing Old Bags and Cages The big debate is often: [should I replace my filter bags or clean them?](https://www.slyinc.com/blog/should-i-replace-my-filter-bags-or-clean-them/) In most industrial cases, cleaning is only a temporary measure. Once the fibers are blinded, laundering often changes bag dimensions or damages the finish. To remove the old bags: 1. **Pulse the system** one last time with the fan off to drop as much dust cake as possible into the hopper. 2. **Remove the cages** for top-load systems and inspect them for bowing, corrosion, or broken wires. 3. **Collapse the snap band** at the top of the bag and remove the bag according to the collector design. 4. **Inspect the tubesheet** carefully. Look for corrosion, wear, or pitting around the holes. If the sealing surface is damaged, the new bags may not seat correctly. 5. **Clean the sealing area** so the new snap bands seat against clean metal. Dispose of old bags in accordance with your facility’s waste-handling requirements and the nature of the collected dust. ### Installing New Filter Bags Installation techniques vary by baghouse type. For pulse-jet systems, you are typically dealing with snap bands, which are flexible metal rings sewn into the top of the bag. 1. **Alignment**: Lower the bag into the tubesheet hole without twisting the fabric. 2. **Seating**: Pop the snap band into place. The groove in the band must sit evenly and flush with the tubesheet. 3. **Cage Insertion**: Carefully slide the cage into the bag. Do not drop it. The cage weight can damage the bag bottom if inserted too aggressively. ### Post-Replacement Maintenance and Startup The first few hours of a new filter’s life are critical. If you start a fan at full speed against brand-new clean bags, high velocity can drive fine particulate deep into the fabric and cause initial blinding. To reduce that risk, many applications benefit from **precoating**. This means injecting a neutral, porous powder into the system before process dust arrives so an initial dust layer protects the fabric surface. Once the system is running: - **Leak Testing**: Perform a dye- or powder-based leak test to confirm proper seating and identify any bypass on the clean side. - **Monitor Differential Pressure**: Track pressure daily in a [maintenance log](https://www.slyinc.com/blog/category/dust-collector-maintenance/). - **Check Cleaning Performance**: Confirm that pulse timing, valve operation, and compressed air quality support normal pressure recovery. - **Ramp Up Carefully**: If possible, use a variable-frequency drive to increase airflow gradually while the bags season. Properly maintained [dust collectors](https://www.slyinc.com/products/dust-collectors/) are a critical part of a safe and compliant plant. In many facilities, they also protect downstream wet scrubbers or other air pollution control stages by removing particulates before gas treatment. By following these steps for **baghouse filter replacement**, you help the full system deliver stable airflow, better compliance performance, and longer equipment life. ## Frequently Asked Questions **Q: How often should I replace my baghouse filters?**A: It depends on the application, but most industrial filters last between 1 and 3 years. If your differential pressure stays high or you see dust at the stack, it’s time. **Q: Can I just wash my old bags to save money?** A: We generally advise against it. Laundering can change the bag’s dimensions, damage the specialized finishes, and rarely restore the original airflow capacity. **Q: What is the benefit of pleated bags over traditional bags?**A: Pleated bags offer more surface area, which allows for a lower air-to-cloth ratio. They also eliminate the need for cages, making **baghouse filter replacement** much faster and easier. **Q: Why is my differential pressure still high after a change-out?**A: This usually points to a problem with the cleaning system (low compressed air pressure, failed pulse valves) or an undersized baghouse for the current dust load. **Q: Do I need to replace the cages every time I replace the bags?**A: Not necessarily, but you must inspect them. If you see any rust, broken welds, or bending, replace them. A bad cage will ruin a new bag very quickly. --- Sly, LLC has been a leader in the air pollution control industry since 1902, when we pioneered the very first cloth-type dust collector. Today, we continue that legacy by designing and manufacturing custom baghouses and wet scrubbers for the world’s most demanding industries. If you’re evaluating a multi-stage dust and gas collection system or need expert guidance on your next **baghouse filter replacement**, Sly’s engineers are ready to help you achieve the cleanest air possible. **Categories:** Baghouse --- ### [Mercury Gas Removal in Cement Kiln Exhausts](https://www.slyinc.com/blog/mercury-gas-removal-in-cement-kiln-exhausts/) **Published:** October 13, 2016 **Author:** p1ws **Content:** In 2015, Mercury Capture Systems (MCS) in Newtown, CT installed a proprietary process system for naturally reducing mercury gas in cement kiln exhausts. A [Sly Inc. Impinjet® wet scrubber](/products/wet-scrubbers/impingement-wet-gas-scrubber/) is an integral part of this process. [![Wet Scrubber for Mercury Removal](https://www.slyinc.com/wp-content/uploads/2024/08/IMG_3580-225x300.jpg "Mercury Removal Wet Scrubber | Sly Air Pollution Control")](https://www.slyinc.com/wp-content/uploads/2024/08/IMG_3580.jpg) The Impinjet® scrubber is the best choice for mercury removal in this case because it provides efficient mass transfer capability using Mercury Capture Systems proprietary chemical reagent process, at an economical price. The partnership between Mercury Capture Systems and Sly Inc. is one where everyone wins, especially cement manufacturers in need of a cost-effective means to reduce mercury in the kiln exhaust. Not only is the MCS process safer and more efficient, it reduces the cost of their mercury emissions removal. Sly Inc. publishes a number of [air pollution control case studies](/resources/case-studies/). For more information on this particular study, contact Mercury Capture Systems or [click here](/wp-content/uploads/2016/10/Mercury-Emissions-Compliance.pdf) to read the article synopsis by Chris Poling of SBC International. [Contact Us](https://www.slyinc.com/contact/) [Wet Scrubber](https://www.slyinc.com/blog/category/wet-scrubber/) **Categories:** Wet Scrubber --- ### [High vs Low Inlet Baghouses](https://www.slyinc.com/blog/high-vs-low-inlet-baghouses/) **Published:** October 19, 2020 **Author:** Al Moretti **Content:** When it comes to air quality control, nothing is more tried and tested than the humble baghouse. Used for over a century to capture airborne dust particles in industrial environments, [baghouses](https://www.slyinc.com/products/dust-collectors/pulse-jet-collectors/) and dry dust collectors help manufacturers keep their businesses cleaner and ultimately safer for their employees. With this long history comes innovation. Just as engineers have had the choice between felted [filter bags](https://www.slyinc.com/products/fabric-filter-media-options/) and [pleated cartridges](https://www.slyinc.com/products/replacement-parts/cartridge-filters/), now you can choose between standard low hopper inlet designs and high inlet baghouse models. While these styles vary, choosing between them will come down to: - Particle size and density - Bridging potential - Inlet loading and duct layout capabilities - Spacing and device footprint ## Conventional Hopper Inlets Traditionally, baghouses were designed with the dirty air inlet in the hopper below the filter bag. The idea here was that the heavy particulate would drop into the hopper and you’d only collect the finest and lightest dust on the filter media. While this would seem logical and efficient – which it is for most dry particulate – particularly light dusts and extremely heavy dusts create their own challenges. Light dusts tend to remain airborne within the baghouse and re–entrain themselves on the filter media, while heavy dusts are typically more abrasive, causing premature wear to the inlet, hopper, and filter bags. These issues forced plant managers and technicians to replace their filter bags every six months or less. Reordering other replacement parts became commonplace as well, putting a financial strain on these businesses. However, it wasn’t until changes were made to the design of inlet itself that industrial facilities were given a viable alternative for handling extremely light/heavy dusts. ## Real World Inlet Design Change A customer with an existing hopper inlet baghouse handling heavy dust complained of premature wear on the equipment and frequent filter bag failure due to the abrasiveness of the dust and air turbulence within the hopper. As the industry leader in dust management with nearly 150 years of experience in air quality control, Sly was ready to help make a change. To reduce wear on the dust collector and increase collection efficiencies, Sly designed a new high inlet baghouse. This design incorporated a high, side inlet classifying section that isolated the dirty airstream from the bag section and allowed the majority of the heavier dust to drop directly into the receiving hopper. Therefore, only the very fine particulate accumulated on the filter bags reducing the premature failures they had been experiencing and greatly extending the life of the bags. This baghouse can now be operated for years before having to replace the filter bags instead of months with the previous collector, providing for significantly lower operation and maintenance costs. Further, this integral classifier design minimized incoming airstream turbulence and reduced inlet and housing wear. It also offered much greater flexibility when laying out inlet ductwork for the new collector. ![High inlet baghouse](https://www.slyinc.com/wp-content/uploads/2024/08/RP6-1467-Sivyer-Steel-STJ-2517-12-HI-4.jpg) Building off of this initial design, Sly now offers four different styles of high inlet baghouses to handle both sides of the dust weight spectrum. For very light dusts, Style 2 and Style 3 slow the airstream velocity to a point where there is minimal up-draft so that the particulate can drift down into the hopper for discharge. These styles are also extremely effective for the collection of stringy and fibrous products. For heavier dusts, Style 1 and Style 4 incorporate an internal classifier section that directs the dust downward into the hopper, isolating the bags from the incoming airstream entirely. More information on these high inlet baghouses can be found below: ### Style 1: High Inlet Classifier Sly’s High Inlet Classifier is used primarily for high loadings and heavy dusts. By removing several complete rows of bags, this design introduces high side inlets into bag-free sections that extend the entire width of the dust collector. The inlet sections are separated from the filter housing by using internal partition walls. In this way, the inlet behaves like a classifier, since the contaminate air will expand as it enters the open housing section, reducing its velocity and allowing large particles to be removed from the stream. Further energy is lost as the dust-laden air moves down into the hopper, allowing for further dust removal before entering the filter housing. ### Style 2: High Rear Inlet Typically used for light bulk density dusts, micron-sized particulate, and light loadings, this style removes bags in each row of the collector. No partition wall is used here, and air flows horizontally into the collector’s bag section. Inlets have a target baffle plate installed in front of them at a calculated distance from the back wall of the design to prevent dust-laden air from directly impinging on the filter bags. ### Style 3: External High Inlet (Dog House) A Style 3 inlet is primarily used for light bulk density dusts, small micron sizes, light loadings, and low headroom applications. These types of baghouses are designed around building an inlet plenum, or dog house, onto the side or back wall of the filter housing. The airflow travels horizontally into the bag section, where no internal partition is used. The inlet also has a target plate positioned in front of it to prevent inlet dusty air from directly impinging on the filter bags. ### Style 4: High Inlet Classifier on End Built for high loadings or heavy dusts, Style 4 inlet designs can be used to simplify inlet ducting requirements. Sly creates this style inlet by extending the filter housing and hopper length with a bag-free classifying inlet section. ## The Sly Difference No matter what style of baghouse you choose, the dust collection experts at Sly can help you find the right baghouse for your application, as well as customize it to fit your individual needs. [Contact us](https://www.slyinc.com/contact/) or [request a quote](https://www.slyinc.com/contact/request-a-quote/) today to see the difference that better air quality control can make. For more information on designing a baghouse, download our handy guide [How to Design a Dust Collection System](https://info.slyinc.com/dry-dust-collection-handbook-1). [Download the Guide](https://info.slyinc.com/dry-dust-collection-system-design-guide-1) [Baghouse](https://www.slyinc.com/blog/category/baghouse/), [Dry Dust Collector](https://www.slyinc.com/blog/category/dry-dust-collector/) **Categories:** Baghouse, Dry Dust Collector --- ### [The Baghouse Insider: Separating Dust from Air](https://www.slyinc.com/blog/the-baghouse-insider-separating-dust-from-air/) **Published:** May 29, 2018 **Author:** p1ws **Content:** ## Dust Removal: The Essential Function of a Baghouse When an industrial process generates dust, that dust may become entrained in the air. A baghouse is the go-to solution for controlling airborne dust, also called particulates, for a healthier, more productive manufacturing environment with less downtime. Dust is captured either for disposal if it is waste or to reclaim valuable fugitive dusts, such as lithium carbonate dust, a mineral used in the production of lithium ion batteries. Keeping as much of this dust in the manufacturing process is critical to the manufacturer’s bottom line. Baghouse size varies according to process need. A baghouse can be as small as a refrigerator to filter 500 CFM of air (the volume of the air stream measured in cubic feet per minute). Sly’s typical application volumetric flows range from 250 CFM to 100,000 CFM. The image below is an example of a larger Sly, LLC baghouse installation. ![Sly-baghouse-system](https://www.slyinc.com/wp-content/uploads/2024/08/Sly-baghouse-system-2.jpg) The operating principal of a baghouse is induced or forced air filtration. Air is filtered when it passes through a bag, the filter medium. Dust particles are too large to pass through the filter, much like coffee grounds are too large to pass through a coffee filter, unless the coffee filter is torn. In a baghouse, dust is caught on the filter bag’s exterior, or upstream side, and left behind as the air continues downstream. A baghouse removes particulates with a collection efficiency of 99.9+%. Often, the air continues up a stack and exits to the atmosphere, and any remaining particulates are exhausted as emissions. Sometimes, a process requires recirculating the exhaust air back indoors, for example, to reduce heat loss in cold climates. ## Dust Clings to Dust Like an industrial-sized vacuum cleaner, a baghouse is designed to capture dust and remove it from the air stream. But not all dust must be removed from the baghouse. Within limits, a cake of dust on the filter media is desirable because it helps to enhance filtration. Just as a pump needs to be primed to create enough operational pressure, a baghouse often needs dust to create sufficient filtration. Dust is the reason for filtration, and also an essential part of filtration. Let’s see why. ![sly-dry-bags](https://www.slyinc.com/wp-content/uploads/2024/08/sly-dry-bags-3.jpg)On first glance, it might appear that a brand-new filter bag (see right) might do the best job of filtration, but the nature of dust turns this obvious, but incorrect, assumption on its head. The best filtration is accomplished when the bags have been seasoned by the accumulation of just the right amount of dust on the surface. ## A Look at Air Flow Incoming dust-laden air is drawn through the baghouse by fan power. Dirty air is either pushed into the baghouse by a forced draft fan at the inlet (positive pressure) or pulled from the baghouse by an induced draft fan at the outlet (negative pressure). Inside the baghouse, a series of bags supported by metal cages hang from the top on a tubesheet. The filter bags, which resemble 8-to-12-foot-long tube socks, are fitted over the cages. Filter bag materials are matched to specific application conditions. Unfiltered air enters the baghouse in the open cavity that surrounds the many bags. Next, it passes through the bags that serve as filter media, leaving behind a layer of particulates on the exterior, or surface, of the bags. The clean air then continues downstream, either to the stack or into process recirculation. ## Pulse Jet Cleaning The cleaning cycle can be activated on a timed sequence or by reaching a preset differential pressure that indicates dust must be removed from the collector. This pulse-on-demand mode triggers the pulse jet system to clear excess dust from the bags when the high point is met and turned off when the low point is reached. Many pulse jet cleaning systems employ a right-angle body diaphragm valve. Air comes in from one direction and flows out at a 90-degree angle. An internal diaphragm controls how much air passes through the valve. The diaphragm valve has an upper and a lower chamber with a flexible diaphragm separating them. The lower chamber connects to the pulse pipe; the upper chamber connects to a solenoid valve. The solenoid core seals off an exhaust port. When current from the timer passes through the solenoid’s coil, it creates a magnetic field inside it that pulls up the inner metal core and opens the solenoid valve, so the air from the upper chamber of the diaphragm valve can escape into the atmosphere. The resulting pressure imbalance inside the diaphragm valve flexes the diaphragm, allowing the air from the compressed air manifold to pass through the pulse pipe into the dust collector to start cleaning. Surface dust is dislodged by the pulses of compressed air and drops into the hoppers below. To minimize the amount of dust that gets re-entrained, the rows of bags are not pulsed in sequence. Throughout the procedure, the baghouse remains online. Filtration continues during pulse jet cleaning. ## Dust Removal: Hoppers Once the captured dust falls into the hoppers, it is continuously removed to prevent buildup, which could lead to dust bridging or solidification. Typically, a rotary valve or screw conveyor clears the dust from the hopper. An air seal prevents the dust in the hopper from returning to the air stream. [Contact Us](https://www.slyinc.com/contact/) [Baghouse](https://www.slyinc.com/blog/category/baghouse/) **Categories:** Baghouse --- ### [Sanitary, Safe and Sensible—Designing the Best Baghouse Discharge System](https://www.slyinc.com/blog/sanitary-safe-and-sensible-designing-the-best-baghouse-discharge-system/) **Published:** January 13, 2023 **Author:** p1ws **Content:** Whether building a new facility or instituting renovation and updates, there are important considerations when selecting a baghouse discharge system. The baghouse discharge system does more than eliminate nuisance dust. It can help improve worker safety by eliminating hazards, helping comply with OSHA regulations, and enhancing product quality. Or, in certain situations, it aids company profitability. Depending on the type of dust generated by your facility, either nuisance or process dust, the baghouse discharge can remove a health and safety hazard or aid with your revenue generation. Here are the top considerations for selecting a baghouse discharge system: The baghouse constitutes part of a facility’s air filtration system. As part of the dust collection process, the baghouse captures and filters airborne particles resulting from manufacturing or agricultural practices before these particles can impact worker and workplace safety and/or plant production. In addition, the system enables compliance with the air quality standards or regulations overseen and enforced by various government bodies. ![horizontal cartridge collector](https://www.slyinc.com/wp-content/uploads/2024/08/horizontal-cartridge-collector-2.jpg) *This is a Horizontal Cartridge Collector with multiple discharge equipment (Rotary Airlocks feeding into a bulk bag) on the bottom of each pyramidal hopper.* ## The Necessity of a Proper Discharge Dust should not collect within the baghouse and must be discharged for disposal or repurposing. After the bags or filters entrap the dust, an automatic cycle knocks the dust loose from the bags to fall into the hopper. The dust can remain in the hopper temporarily but should be discharged at regular intervals. Dust buildup within the hopper can cause several problems. Depending on the abrasiveness of the dust, it could cause premature wear and tear on the filters or bags. Re-entrainment can increase the concentration of dust by the inlet or contaminate air already cleared from dust. Worst of all, it could provide fuel for a combustible dust event such as a fire or explosion. ## Types of Dust Collected by the Baghouse The baghouse collects two types of dust: nuisance dust or product/process dust. Nuisance dust is discarded after its collection as it has no commercial value. Product or process dust has value as part of the production stream or as a product available for resale. For example, lithium carbonate is collected as part of the production stream for battery production. Fly ash dust is sold to cement manufacturers. Once collected from the baghouse discharge, process dust is cycled back into the production stream. The dust’s future purpose, whether for discard or further processing, is one factor that dictates the type of discharge required. Overall, process dust has value to the original manufacturer and represents lost revenue if discarded. ## Manual or Automatic Discharge There can be a manual or an automatic discharge from the hopper. A manual discharge is recommended only when there is an exceptionally light dust load collected from a system. This can be the case with nuisance dust, a mixture of diverse dust collected by a central vacuum unit or tied to a batch-type process. Some facilities generate as little as a pound of dust per week. In this case, a continuous discharge would waste energy. Even a single 55-gallon drum’s worth of dust per week is still considered a light dust loading. Anything above this amount or process dust instead of nuisance dust would benefit from an automatic discharge. A semi-automatic system can depend on plant personnel to trigger the automated discharge once the hopper is filled or be fully automated on a regular schedule to empty the hopper. Continuous discharge is a safety feature when working with combustible dust and is always recommended in a hazardous environment. Coal dust, for example, is notorious for its combustibility. The [OSHA site](https://www.osha.gov/sites/default/files/otm_secIV_chap6.pdf) has a wealth of information about combustible dust, proper analysis, and housekeeping considerations. Or ask the experts at Sly Inc. if you are unsure about your dust’s combustion potential. ## Gated Hoppers Maintain Proper Baghouse Vacuum Points The hopper is gated for a few distinct reasons. One, it allows the operation to put the appropriate container underneath the hopper to collect the discharge. Secondly, a gated hopper helps maintain the proper vacuum in the baghouse. Typically, a baghouse dust collection system should have one initial point of suction and one point of discharge for the air. The hopper should remain closed except for discharge purposes. Otherwise, an open hopper creates a second suction point and interrupts the discharge. The dust will reverse course and get sucked back or re-entrained into the baghouse filters. ### **There are a couple options for the gated mechanism:**    #### **Slide Gate**  A slide gate has two separate gates that operate one at a time. The first gate allows the dust to enter the dump valve or the discharge point. Once the first gate is closed, the second slide gate opens to allow the dust to discharge into the container. Operating one gate at a time helps preserve the baghouse system’s vacuum or pressure. #### **Rotary Valve**  This works comparably to the slide gate to protect the vacuum or pressure differential within the baghouse. Rotary valves often are selected to discharge directly into a conveyor, typically a screw or auger conveyor that moves the captured and discharged dust back into the process stream. This type of valve is best with light dust loads and non-hazardous materials. A rotary valve can also be applied to a batch system with light loading, on a pyramid hopper, for example. Plant personnel can trigger the discharge manually or rely on an automatic operating system. There is a pressure differential between the clean air plenum and the dirty plenum. A control panel can be programmed to automatically shut down the baghouse in case of a high-pressure differential beyond the scope of the system, as a safety feature. ## Discharge Heights Can Vary to Suit Plant Requirements The typical discharge height for a baghouse from Sly, LLC is five feet from the ground, including any valves or accessories. The discharge has a one-foot airlock leaving four feet of clearance underneath the discharge valve. Customers can dictate or specify a different discharge height for six or seven feet of clearance if, for example, the company is discharging to a conveyor or a truck for removal. Another option is a flexible hose attached to the end of the valve. The hose allows for different-sized containers to be placed underneath the discharge valve. Flexible hoses are not used in applications with explosive or highly combustible materials. ## Dust Characteristics that Impact Discharge Design For proper discharge design, operators need to consider dust load, type of dust, and characteristics such as abrasion, corrosion, and agglomeration or hygroscopicity. All will have an impact. For example, there are two extremes for agglomeration. An example of a poor agglomerate would be dry beach sand, while wet snow would serve as an example of particularly good agglomeration. When a substance packs easily or agglomerates, the angle of the hopper for discharge is critically important to ensure the dust doesn’t accumulate in the hopper. ## The Danger Created by Bridging Accumulation or bridging can occur with hygroscopic dust such as soda ash, lime, or limestone, which are all good at absorbing moisture. These can cake up and form a connection or “bridge” across a discharge outlet. Bridging also creates more significant risks if the dust is combustible. When this bridging blocks the discharge pathway, it traps dust in the hopper and can raise the pressure drop in the system to an unacceptable level. Design features that can address this can include: - An enlarged discharge opening. - Elimination of sharp corners or valleys within the hopper. - Calculating an effective angle of repose. This angle of repose is the relation between dust’s flow characteristics and the maximum angle to facilitate its flow. Calculating this value helps determine the slope or steepness of the hopper. Dust characteristics such as these are best addressed during the design phase. While baghouses and discharges can be retrofitted or modified after installation, operators risk having to shut down operations to fix a problem that could be addressed earlier. Make your workplace a safer environment. Capture dust meant for disposal or recover dust as part of the process stream to improve profitability. Talk to the experts at Sly Inc. about the design of your next baghouse and the proper discharge components. Call us today. **Categories:** Bag Filter Cleaning, Dust Collection Equipment, Dust Collector Replacement Bags --- ### [Electrostatic Precipitators vs. Baghouse Dust Collectors](https://www.slyinc.com/blog/electrostatic-precipitators-vs-baghouse-dust-collectors/) **Published:** December 22, 2017 **Author:** p1ws **Content:** ![img-tubejet1.png](https://www.slyinc.com/wp-content/uploads/2024/08/img-tubejet1.png) A search for dust collection solutions will turn up a number of possible technologies.  One of the more common questions we receive is about electrostatic precipitators (ESPs).  In this blog post, we will define what an ESP is, and explain the primary reasons most companies have moved away from this dust collection technology. ## What Are Electrostatic Precipitators? As the name implies, this particulate collection process operates via electrostatic forces. A dust-laden air stream passes through a precipitator box which is charged with an electrical field, usually using plates or wires. As the dust passes the charged plates or wires, a corona effect gives the dust particles a positive charge. This causes the dust to “stick” when the positively charged particles are attracted to a set of negatively charged plates. A mechanical portion of the equipment involves striking these plates periodically, causing the dust to fall into a hopper. This is in contrast to a baghouse dust collector in which air is passed through a filter medium (bag or cartridge) and the particles are captured on the filter exterior while the clean gas passes through.  Accumulated dust on the exterior of the filters is typically removed via a compressed air pulse. ## Why Electrostatic Precipitators Are Being Replaced by Baghouse Dust Collectors Most companies have transitioned to the baghouse dust collection solution. There are three main reasons for this transition. ### ESPs Operate Best with Very Large Airflow ESPs are only cost effective in applications with very large air flow, due to their high capital cost. Historically, the biggest users of ESPs were coal-fired power plants and paper mills which had high volumes of gas passing through boilers and processing large volumes of air. In the past, baghouse solutions weren’t large enough to support these applications. However, baghouse technology has advanced over the years and now offers longer bags and better cleaning systems. Baghouses are far more efficient at particulate collection: a typical baghouse efficiency is 99.9% efficiency while ESPs are 98%-99% efficient. Collection efficiency as mandated by the EPA Clean Air Act was a driving force requiring many owners to transition from ESPs to baghouses. ### Baghouses Provide Cost Savings ESPs consume significant amounts of electricity, leading to high operating costs. Also, the mechanical components of ESPs are more prone to wear or failure which can result in higher maintenance costs.  By contrast, baghouses have no moving parts and the operating costs are mostly limited to the consumption of compressed air and fan or blower horsepower. Companies still operating ESP dust collectors may be hesitant to switch to a baghouse dust solution. In most cases, changing the dust collection technology requires plants to re-apply for permits because it’s a different dust collection process. ### Most Particulates Are Slow to Take on an Electric Charge ESPs work best when the particulate has a propensity for gaining a positive charge. But, many particles don’t or are slow to take on the electric charge which reduces the ESP’s effectiveness. At Sly, throughout our 143-year history, we’ve stayed on top of the latest dust collection technologies. Baghouse dust collectors have the advantage over electrostatic precipitators. Contact us to learn more! [Contact Us](https://www.slyinc.com/contact/) [Baghouse](https://www.slyinc.com/blog/category/baghouse/), [Dust Collector System](https://www.slyinc.com/blog/category/dust-collector-system/) **Categories:** Baghouse, Dust Collector System --- ### [Acid Gas Control: Unpacking the Best Treatment and Removal Strategies](https://www.slyinc.com/blog/dont-get-gassed-the-ultimate-guide-to-acid-gas-management/) **Published:** March 4, 2026 **Author:** Al Moretti **Excerpt:** Why Acid Gas Control Matters for Your Facility Acid gas control is the process of removing harmful acidic compounds—like sulfur dioxide (SO2), hydrogen chloride (HCl), hydrogen sulfide (H2S), and hydrogen fluoride (HF)—from industrial exhaust streams before they reach the atmosphere. **Content:** ## Why Acid Gas Control Matters for Your Facility **Acid gas control** is the process of removing harmful acidic compounds—like sulfur dioxide (SO2), hydrogen chloride (HCl), hydrogen sulfide (H2S), and hydrogen fluoride (HF)—from industrial exhaust streams before they reach the atmosphere. These gases form when fuels containing sulfur, chlorine, or other elements are burned or processed, and they can cause serious environmental damage, health problems, and equipment corrosion. **Quick Overview:** - **Common Acid Gases:** SO2, HCl, H2S, HF, and NOx - **Primary Control Methods:** Wet scrubbers (90-99% removal), dry sorbent injection (50-80% removal), and circulating dry scrubbers (>95% removal) - **Key Industries:** Power generation, cement, pulp and paper, metals, waste incineration, and chemical processing - **Main Benefits:** Meet environmental regulations, protect public health, prevent acid rain, and avoid equipment corrosion If you manage an industrial facility, you know that regulatory compliance isn’t optional. The EPA’s Clean Air Act sets strict limits on acid gas emissions. Failing to meet these standards can result in costly fines, forced shutdowns, and damage to your company’s reputation. But compliance is just the starting point. Acid gases are corrosive. They damage your equipment, shorten its lifespan, and drive up maintenance costs. They also pose real health risks to your workers and the surrounding community. When released into the atmosphere, these gases contribute to acid rain, which harms ecosystems, water supplies, and infrastructure. The good news? Proven technologies exist to control acid gases effectively. The challenge is choosing the right system for your specific process conditions, removal efficiency requirements, and budget. This guide walks you through everything you need to know—from understanding what acid gases are and why they’re dangerous, to comparing wet scrubbers, dry sorbent injection, and circulating dry scrubbers, to selecting the best solution for your facility. ![Infographic showing the industrial sources of acid gases (combustion, gasification, chemical processing), the common types of acid gases (SO2, HCl, H2S, HF, NOx), and their environmental and health effects including acid rain formation, respiratory problems, ecosystem damage, and equipment corrosion - acid gas control infographic ](https://images.bannerbear.com/direct/4mGpW3zwpg0ZK0AxQw/requests/000/118/222/700/NgL30amMOYeNZeK7zprJxBoye/49e155c5892242c891f855db9c3300e04788fa15.jpg "Infographic showing the industrial sources of acid gases (combustion, gasification, chemical processing), the common types of acid gases (SO2, HCl, H2S, HF, NOx), and their environmental and health effects including acid rain formation, respiratory problems, ecosystem damage, and equipment corrosion - acid gas control infographic ") ## Understanding Acid Gases and Why Control is Crucial Acid gases are a group of chemical compounds that, when dissolved in water, form acidic solutions. In industrial settings, they’re typically found in exhaust streams from processes that involve combustion, gasification, and various chemical reactions. The most common culprits we encounter are: - **Sulfur Oxides (SOx):** Primarily sulfur dioxide (SO2) and sulfur trioxide (SO3), often produced from burning fossil fuels like coal and oil, which contain sulfur. SO2 is a major contributor to acid rain. - **Hydrogen Chloride (HCl):** A highly corrosive gas typically generated from the combustion of chlorine-containing materials, such as certain wastes or biomass. - **Hydrogen Sulfide (H2S):** A highly toxic gas with a characteristic “rotten egg” smell, often found in natural gas processing, petroleum refining, and gasification processes. Its combustion products include SO2. - **Hydrogen Fluoride (HF):** A highly corrosive and toxic gas, often emitted from aluminum production, phosphate fertilizer manufacturing, and ceramic operations. - **Oxides of Nitrogen (NOx):** While not always strictly “acid gases” in the same chemical sense as the others, NOx compounds (like NO and NO2) contribute to acid rain and smog and are often controlled alongside other acidic pollutants. ### Industrial Sources of Acid Gases These problematic gases don’t just appear out of nowhere. They are byproducts of many essential industrial operations: - **Combustion:** Power plants, industrial boilers, incinerators, and furnaces that burn coal, oil, natural gas, biomass, or waste are significant sources of SOx, NOx, and HCl. - **Gasification:** In processes that convert carbonaceous materials into syngas (synthesis gas), hydrogen sulfide (H2S), carbonyl sulfide (COS), and carbon dioxide (CO2) are the main acid gases produced. - **Chemical Processing:** Industries involved in chemical manufacturing, metals finishing, etching, and various other processes can emit a range of specific acid gases, including nitric acid (HNO3) mist, phosphoric acid (H3PO4) mist, and chlorine (Cl2). ### The Environmental and Health Impact The control of these emissions isn’t just about ticking a box; it’s about protecting our planet and our health. - **Environmental Impact:** When released into the atmosphere, SOx and NOx react with water, oxygen, and other chemicals to form sulfuric and nitric acids. These fall back to Earth as “acid rain,” damaging forests, acidifying lakes and streams, corroding buildings and infrastructure, and harming aquatic life. Beyond acid rain, these gases contribute to smog and particulate matter formation. For more details on these benefits, see our article on [the environmental benefits of scrubbers](https://www.slyinc.com/blog/wet-scrubbers-and-the-environment/). - **Health Risks:** Exposure to acid gases can cause severe respiratory problems, eye irritation, and other health issues for workers and nearby communities. H2S, in particular, is highly toxic and can be lethal even at low concentrations. - **Equipment Corrosion:** Acid gases are notoriously corrosive. They can rapidly degrade industrial equipment, leading to costly repairs, increased downtime, and reduced operational lifespan. ### Regulatory Drivers In the United States, regulations like the Clean Air Act, enforced by the Environmental Protection Agency (EPA), set stringent limits on the emission of acid gases. These regulations drive the need for effective **acid gas control** solutions across various industries. For instance, integrated gasification combined cycle (IGCC) applications must reduce sulfur content in syngas to less than 30 parts per million by volume (ppmv) to meet stack gas emission targets of less than 4 ppmv SO2. These benchmarks continually evolve, requiring industries to adopt robust and efficient control technologies. You can dig deeper into the technical aspects of acid gas removal in this [authoritative report on acid gas removal](https://netl.doe.gov/sites/default/files/2021-04/acid-gas-removal.pdf). ## Wet Scrubbing: The High-Efficiency Solution for Acid Gas When it comes to achieving high removal efficiencies for acid gases, wet scrubbers often lead the pack. These systems use a liquid absorbent or slurry to capture pollutants, offering a robust solution for many industrial applications. At its core, wet scrubbing relies on the principle of absorption and chemical neutralization. Exhaust gas enters the scrubber and is brought into intimate contact with a scrubbing liquid. This liquid, often water with added reagents such as caustic (sodium hydroxide) or a lime slurry, absorbs the acid gases. The acid gases then react chemically with the reagents in the liquid, neutralizing them into harmless salts. Wet Flue Gas Desulfurization (FGD) systems, a common type of wet scrubber, can achieve impressive removal efficiencies, often reaching 90-98% for SO2, with newer designs pushing towards 99%. For HCl, removal efficiencies can exceed 95%. This makes them a go-to solution for stringent emission limits. If you’re curious about the basics, we’ve got you covered with [What is a Wet Scrubber?](https://www.slyinc.com/blog/what-is-a-wet-scrubber/) and an overview of [The 3 Most Common Types of Wet Scrubbers](https://www.slyinc.com/blog/the-3-most-common-types-of-wet-scrubbers/). ### Key Components and Types Wet scrubbers come in various configurations, each designed to optimize gas-liquid contact for specific applications: - **Packed Towers:** These are among the most common types of wet scrubbers. Exhaust gas flows upward through a tower packed with specialized media (like rings or saddles), while the scrubbing liquid flows downward, creating a vast surface area for gas-liquid contact. Our [Packed Tower Wet Scrubber](https://www.slyinc.com/products/industrial-wet-scrubbers/packed-tower-wet-scrubber/) solutions are designed for maximum absorption. - **Impinjet Wet Scrubbers:** These designs use impingement baffles to create turbulence and promote excellent gas-liquid contact, making them highly effective for both gas and particulate removal. Explore our [Impinjet Wet Scrubber](https://www.slyinc.com/products/industrial-wet-scrubbers/impinjet-wet-scrubber/) for more details, and watch [The Anatomy of an Impinjet Wet Scrubber](https://www.slyinc.com/resources/videos/the-anatomy-of-an-impinjet-wet-scrubber/) to see it in action. - **Venturi Wet Scrubbers:** Known for their ability to handle high particulate loads, as well as gases, Venturi scrubbers accelerate the gas stream through a constricted throat, where it mixes vigorously with the scrubbing liquid. Check out our [Venturi Wet Scrubber](https://www.slyinc.com/products/industrial-wet-scrubbers/venturi-wet-scrubber/) for robust solutions. - **Mist Eliminators:** Crucial for all wet scrubbers, these components are located at the scrubber’s exhaust to remove any scrubbing liquid droplets entrained in the cleaned gas stream, preventing carryover and potential corrosion of downstream equipment. - **Scrubbing Liquid System:** This includes tanks, pumps, and nozzles for preparing and distributing the scrubbing liquid, ensuring a continuous supply of fresh reagent to neutralize the acid gases. ### Advantages and Limitations Like any technology, wet scrubbers have their strengths and weaknesses: #### Advantages: - **High Removal Efficiency:** As mentioned, they excel at removing acid gases, often achieving 99% or more for SO2 and HCl. - **Particulate Removal:** Many wet scrubber designs, particularly Venturi and Impinjet types, are highly effective at removing particulate matter, as discussed in [What Particles Does a Wet Scrubber Remove?](https://www.slyinc.com/blog/what-particles-does-a-wet-scrubber-remove/). - **Handles High Temperatures:** Wet scrubbers can often cool hot gas streams, making them suitable for processes with high-temperature exhaust. - **Corrosion Resistance:** With proper material selection, such as Fiberglass Reinforced Plastic (FRP), wet scrubbers can offer excellent corrosion resistance and longevity, even in highly acidic environments. Our [FRP Wet Scrubbers: Corrosion Resistance and Longevity for Emissions Control](https://www.slyinc.com/blog/frp-wet-scrubbers-corrosion-resistance-and-longevity-for-emissions-control/) details this benefit. #### Limitations: - **Wastewater Generation:** A significant drawback is the production of wastewater, which requires further treatment and disposal in compliance with environmental regulations. - **Corrosion Potential:** Despite material advances, corrosion remains a principal operating issue if not properly managed, due to the acidic nature of the contaminant gases. - **Plume Visibility:** Wet scrubbers can sometimes produce a visible steam plume from the stack, although mist eliminators and reheat can mitigate this. For a balanced view, we invite you to read [What are the Advantages and Disadvantages of Using Wet Scrubbers?](https://www.slyinc.com/blog/what-are-the-advantages-and-disadvantages-of-using-wet-scrubbers/). ### Key Industries and Applications All these technologies play vital roles in various sectors: - **Power Generation:** Coal-fired power plants heavily rely on FGD systems (both wet and dry) for SO2 control. - **Cement Industry:** CDS systems are commonly used in cement kilns. - **Pulp and Paper Mills:** Acid gas control is crucial for managing emissions. Check out our insights on [Enhancing Environmental Sustainability in Pulp and Paper Mills with FRP Scrubbers](https://www.slyinc.com/blog/enhancing-environmental-sustainability-in-pulp-and-paper-mills-with-frp-scrubbers/). - **Metals (Ferrous and non-Ferrous):** Metal processing facilities often produce acid gases that require control. - **Incineration:** Waste-to-energy plants and municipal/hazardous waste incinerators use various scrubbers to handle a complex mix of acid gases and particulates. - **Chemical Processes:** Manufacturing facilities across the chemical industry need custom solutions for specific acid gases, such as HCl, HF, and sulfuric acid mist. - **Other:** Biomass-to-energy, lime production, mining, oil and petrochemical applications, and even wastewater treatment plants all have unique **acid gas control** needs. For example, wet scrubbers can be an integral component of the [Mercury Gas Removal system ](https://www.slyinc.com/blog/mercury-gas-removal-in-cement-kiln-exhausts/)[in Cement Kiln Exhausts](https://www.slyinc.com/blog/mercury-gas-removal-in-cement-kiln-exhausts/). ### Key Factors in System Design and Cost for Acid Gas Control When designing and costing an **acid gas control** system, several factors go beyond just the technology type: - **Boiler Heat Input:** The thermal capacity of the industrial unit directly influences the volume of flue gas to be treated and, consequently, the size and cost of the control system. - **Capacity Factor:** How often the unit operates affects annual operating costs, especially for reagents and utilities. - **Site Elevation:** Believe it or not, elevation can impact design. Higher elevations mean lower atmospheric pressure, which affects gas density and fan power requirements. - **Retrofit Challenges:** Installing a new system in an existing facility can be more complex and costly than designing for a new build, due to space constraints and integration with existing infrastructure. - **Reagent Costs:** The price of sorbents (like limestone at $28/ton or lime at $75/ton, based on 2016 data) is a significant ongoing operational expense. These factors are crucial for accurate budgeting and system optimization. Our guide on [How to Determine Wet Scrubber Costs for Your Next System Design](https://www.slyinc.com/blog/how-to-determine-wet-scrubber-costs-for-your-next-system-design/) provides further insights. ## Frequently Asked Questions about Acid Gas Control We understand that **acid gas control** can be a complex topic, so let’s answer some of the most common questions we hear. ### What are the most common acid gases from industrial processes? The primary acid gases we typically address from industrial processes include: - **Sulfur Dioxide (SO2)** and **Sulfur Trioxide (SO3)**, commonly from combustion. - **Hydrogen Chloride (HCl)**, often from waste incineration or biomass burning. - **Hydrogen Sulfide (H2S)**, prevalent in natural gas processing and gasification. - **Hydrogen Fluoride (HF)**, from specific manufacturing processes. - And while not strictly an acid gas in the same way, **Oxides of Nitrogen (NOx)** are often controlled due to their contribution to acid rain. ### Can a single system remove both particulates and acid gases? Absolutely! **Acid gas control** systems are designed to handle both gaseous pollutants and particulate matter (PM). - **Wet Scrubbers:** Many wet scrubber designs, such as Venturi and Impinjet scrubbers, are highly effective at simultaneously capturing both acid gases and fine particulates from the gas stream. The liquid spray and turbulent mixing can efficiently trap both. ### What is the main difference between a wet and dry scrubber? The fundamental difference lies in how they interact with the gas stream and handle waste: - **Wet Scrubbers** use a liquid solution (typically water with chemical reagents) to absorb and neutralize acid gases. The gas stream is saturated with moisture, and the pollutants are captured in the liquid, resulting in a wet slurry or wastewater byproduct. Wet scrubbers typically offer very high removal efficiencies and can cool hot gas streams. - **Dry Scrubbers** generally produce a dry solid byproduct, which can simplify disposal. While wet scrubbers often achieve higher removal efficiencies, dry scrubbers are generally less expensive, take up less space, and have lower operating costs. ## Conclusion Navigating **acid gas control** can feel like a maze, but understanding the basics of these powerful technologies empowers you to make informed decisions for your facility. We’ve seen that acid gases pose serious threats to our environment, our health, and your equipment, making effective control not just a regulatory mandate but a responsible operational imperative. From the high-efficiency, multi-pollutant removal capabilities of wet scrubbers to the simpler, dry-waste handling, there’s a solution custom-made for nearly every industrial challenge. The key is to match the right technology to your specific process conditions, emission targets, and budget constraints, carefully considering factors like capital cost, operating expenses, and byproduct management. At Sly, LLC, we’ve been pioneers in industrial air pollution control since 1902, designing and manufacturing custom, high-quality systems like our robust wet scrubbers and efficient baghouses. We believe in delivering reliable, no-compromise solutions for the cleanest air possible. Choosing the right partner with extensive experience and a commitment to understanding your unique needs is paramount. Don’t let acid gases get the best of your operations or the environment. Take control with a custom-engineered solution that delivers both compliance and peace of mind. We invite you to [Explore our Packed Tower Wet Scrubber solutions for your application](https://www.slyinc.com/products/industrial-wet-scrubbers/packed-tower-wet-scrubber/) or contact us to discuss your specific acid gas control challenges. **Categories:** Wet Scrubber --- ### [The 3 Most Common Types of Wet Scrubbers](https://www.slyinc.com/blog/the-3-most-common-types-of-wet-scrubbers/) **Published:** October 9, 2019 **Author:** p1ws **Content:** Since the types and mechanisms of air pollution are always changing, the equipment used to control the air pollutants that we make must change and evolve as well. Here at Sly we know that better than anyone. With over a century-and-a-half experience in the air pollution industry, our technology has come a long way since our original patent for the first cloth dust collector in 1902. However, even before that, nature had its own way of cleaning the air: rain. You get that crisp, clean air feeling after it rains because it’s scrubbing pollutants from the air, essentially making it a rudimentary version of the modern wet scrubber. From those humble origins, wet scrubbers have evolved to become critical for our industrial pollution control needs. metals processing,A wet scrubber is an air pollution control (APC) device that uses a scrubbing fluid or solution to remove contaminants from an air stream. This solution can be water-based or non-aqueous, allowing the device to remove a variety of solid, liquid, and gas contaminants. You can find wet scrubbers in numerous industrial applications such as industrial boilers, incinerators, and metals processing, as well as chemical, asphalt, and fertilizer production. While wet scrubbers can vary from application to application, these are the top 3 most common types of wet scrubbers: ## Venturi Wet Scrubbers Venturi scrubbers are perfect for collecting fine particulate and liquid mists. Using the differential between high-velocity gases and free-flowing water to create contaminant-entrapping droplets, these scrubbers can suspend and contain a multitude of pollutants in your system. By maintaining high gas velocities and turbulence in the throat of the design you can achieve high collection efficiencies, ranging from 90% to 99% for particles with a diameter larger than 1 µm and greater than 80% for submicron particles. ## Packed Tower Wet Scrubbers [Packed tower scrubbers](https://www.slyinc.com/products/wet-scrubbers/packed-tower-wet-scrubber/), also called packed bed or packed column scrubbers, are best for getting rid of gas phase emissions like sulfur dioxide or other odors and acids. By chemical scrubbing contaminants from your gas streams, these types of scrubbers, when designed correctly, can remove toxic or otherwise harmful emissions from gas streams and exhaust clean air into the environment. Internal packing within the scrubber provides a large wetted surface area that forces a close-contact interaction between the scrubbing liquid and the contaminated airflow. The scrubbing liquid then either absorbs or reacts with the contaminants, effectively removing them from the air. The typical collection efficiency range is from 90% to 99%, with that efficiency becoming greater than 99% for select pollutant systems. Packed tower scrubbers are less effective when dealing with particulate matter control, as high concentrations of dust can easily clog the bed of the tower. ## Impingement Wet Scrubbers Also called tray-tower scrubbers, impingement scrubbers are your go-to devices for dealing with practically any other type of particulate matter with particles larger than 5 µm or soluble gases. They especially excel when working with dryers and powdered products, like salt and food flavorings. In these types of scrubbers, gas enters from the bottom of the tower and travels upward through openings in horizontal perforated trays while a scrubbing liquid flows from the top and over each tray, mixing with the gas. This produces more gas-liquid contact than in other tower designs. Improving upon typical tray scrubbers, the team at Sly has come up with our own type of scrubber called the Impinjet. Our secret is the design of the scrubber itself, which uses an impingement baffle above each hole in the trays. During air-scrubbing, these wetted baffles create tiny droplets around 100 microns in diameter to clean the contaminated gas and entrap the pollutant particles in the scrubbing liquid. Through this design, Impinjet scrubbers can achieve high collection efficiencies of around 99% at 5 microns or larger through low water recirculation and minimum pressure drops. No matter what industry you’re in or what type of pollutants you’re dealing with, picking the right wet scrubber for the job will be key to getting the most out of your air pollution control system. [Get the Guide](https://www.slyinc.com/resources/white-papers/guide-using-wet-scrubbers-for-combustible-dust-control/) [Wet Scrubber](https://www.slyinc.com/blog/category/wet-scrubber/) **Categories:** Wet Scrubber --- ### [What Are The Advantages and Disadvantages of Using Wet Scrubbers?](https://www.slyinc.com/blog/what-are-the-advantages-and-disadvantages-of-using-wet-scrubbers/) **Published:** February 24, 2022 **Author:** p1ws **Content:** A wet scrubber effectively cleans or “scrubbing” particulates and chemicals from industrial exhaust gases. Because wet scrubbers use water or a water-based solution to collect pollutants from the exhaust stream, plant managers view the equipment as more complex than dry dust collection systems. While there may be more engineering complexity, wet scrubbers typically have lower operating costs than dry systems, and sometimes they have equal or lower upfront costs. In many situations, a wet scrubber is the only technology that will achieve the desired results. That’s why company managers considering a wet scrubber should know [the pros and cons of web scrubbers](https://blog.slyinc.com/wet-vs.-dry-systems-which-is-best-for-your-air-pollution-control-challenge) and how they apply to their specific applications. This blog post can help. ## Advantages of Wet Scrubbers ### Safely Handle Combustible Dust In combustible dust applications, a wet scrubber eliminates the risk of an explosion in the scrubber. The risk depends on the dust type, particulate size, temperature, and concentration. Our client, who makes explosives, understands the extreme consequences of combustion and opts for a wet scrubber. An application involving corn starch or sugar—dusts that can be explosive in the right conditions—is handled safely with a dry system if the concentrations are low enough and ignition sources are absent. Managers must weigh the potential consequences of an industrial accident, including OSHA fines, litigation, and medical costs, against the additional cost of a wet scrubber. A wet system is the only way to completely avoid the risk. Remember, dry systems that handle combustible dust are required to have safety equipment that adds to the cost of the system. Poor maintenance is a major factor in dust-related explosions; the cost of ongoing maintenance should be included in the risk-benefit analysis. ### Save Space Wet scrubbers consume less space in the plant. Unlike baghouses and cartridge collectors with associated ductwork, wet scrubbers have a compact footprint. When space in a facility is precious, size is a critical factor. ### Handle Sticky or Abrasive Dust We hear from customers who have abandoned their baghouses because of sticky material that quickly blinds filters and increases cost in the form of labor and replacement filters. Wet scrubbers have no filters to replace. Abrasion is another consideration. Abrasive particulate can cause excessive wear of dust collectors, conveyors, and rotary valves, shortening their service life. For a sand dryer application, our customer found it is better to collect the dust in water and then pass the water through a filter that separates the sand from the water. ### Remove Unwanted Soluble Gases When wet scrubbers force gas and water together, gas passes through the water leaving the particulate behind. Soluble gases, however, don’t pass through but rather absorb into the water, enabling their removal from the waste stream. Waste gases that are commonly removed from industrial processes include chlorine, ammonia, and hydrochloric acid. Wet scrubbers also remove water-soluble odors. In contrast, dry dust collection systems do not remove gases and odors. ### Remove Fine Particulate and Mists Wet scrubbers are extremely efficient, removing up to 99% of particulates, including particulates too small to be caught in baghouse and cartridge filters. Scrubbers with ultra-fine droplets entrap tiny particles and hold them in the solution for removal. Mists can entrain small particles, so if the pollutant is a mist, a wet scrubber will perform when a dry dust collection system can not. ### Minimize Maintenance Very little maintenance is required of a wet scrubber. The only regular maintenance required is to change the scrubber water regularly. It’s like mopping a floor. The floor will get only as clean as your mop water. In the same way, process water should be replaced as needed to meet pollution control targets. The frequency of maintenance will depend on the CFM of the system, the amount of particulate in the influent gas, and the PPM targets required of the effluent gas. ## Disadvantages of Wet Scrubbers ### Potential Higher Cost Often, a wet scrubber costs more than a dry dust collection system. This is mainly because a liquid solution is more corrosive than dry dust, so wet scrubbers must be constructed of stainless steel. In contrast, a baghouse, cartridge collector, and dust cyclone may be made of cheaper carbon steel. Depending on the nature of the particulate, a dry dust collection system may also need to be made of stainless steel in some applications, diminishing the cost advantage. ### Difficulty of Wet Waste Disposal A dry system is better if the process water cannot be discharged into the sewer. As a wet scrubber collects contaminants, the water gets dirty and must be changed. A case in point is a company that makes spices. It assumed its process water was compatible with the municipal sewer system, but the municipality disagreed. Suddenly, the processor had to switch to a dry scrubber system where waste could be collected in 55-gallon drums and removed for disposal in a landfill. ### Pay Higher Energy Costs A wet system has higher energy costs than a dry system because the differential pressure must be higher, especially with venturi scrubbers. In order to mix the exhaust gas with the water, a significant motive force must be applied via high-horsepower fans. Compared to a dry dust collection system that merely moves gas through a filter, a wet scrubber adds more to the electric utility bill. ## Seek Advice From an Expert Like so many engineering decisions, it is essential to have a complete picture before selecting a pollution control technology. Most plant managers don’t know what they don’t know, so they should get advice from an experienced industry consultant or scrubber manufacturer. Because they see a wide range of applications, they know which questions to ask to comprehensively understand the system’s needs and whether a wet scrubber’s advantages outweigh the disadvantages in a particular situation. [Call Sly today to discuss your application with an expert](https://www.slyinc.com/contact/). [Contact Us](https://www.slyinc.com/contact/) [Wet Scrubber](https://www.slyinc.com/blog/category/wet-scrubber/) **Categories:** Wet Scrubber --- ### [Preventing Dust Explosions: Considerations for Weighing Your Dust Control Options](https://www.slyinc.com/blog/preventing-dust-explosions-considerations-for-weighing-your-dust-control-options/) **Published:** October 24, 2018 **Author:** p1ws **Content:** Industrial dust explosions don’t “just happen.” Too many manufacturers don’t consider the combustibility of the dust their processes may be creating when weighing their dust control options. Solid, noncombustible items can be turned into combustible dusts during manufacturing processes like food prep (grinding, transferring or mixing ingredients), machining (sawing, grinding, drilling) or finishing (buffing, polishing and abrasive blasting). These processes can produce massive quantities of suspended particles. Electrical devices or processes that can produce sparks or heat can trigger explosions, especially in areas where poor housekeeping practices have allowed dust to accumulate. These explosions can be disastrous in terms of destruction, injuries and deaths. For example, an explosion and fire at Imperial Sugar Refinery in Port Wentworth, Georgia, killed 14 employees and hospitalized 40 others. Fortunately for manufacturers, choosing the right dust collection solution and the right provider can reduce the likelihood of catastrophes. ![dust-explosions](https://www.slyinc.com/wp-content/uploads/2024/08/dust-explosions-1.png) Dust explosions can occur in any industrial manufacturing context where these five risk factors are present. Sly’s newest guide, [Using Wet Scrubbers for Combustible Dust Control](/wet-scrubber-guide-lp), outlines the wide range of combustible dusts and explains how the use of a wet scrubber rather than a dry dust collection system can lower the risk of a dust explosion. It also provides an overview of the types of wet scrubbers available, as well as precautions and guidelines to follow if your facility must use a dry dust collection system instead of a wet scrubber. At Sly, we work closely with our customers to evaluate their application in order to design the best solution for their specific needs. Even if you already have a dry dust collector installed or your application limits you to a dry dust collector, you can still reduce the chances for a dust explosion by following the advice in the guide. Download your copy of [Using Wet Scrubbers for Combustible Dust Control](https://info.slyinc.com/wet-scrubber-handbook-lp-1) to learn more about how to safeguard your facility and the people who work there. If you need help upgrading your approach to dust collection, [contact us](https://www.slyinc.com/contact/) or [request a quote](https://www.slyinc.com/contact/request-a-quote/). [Get the Guide](https://info.slyinc.com/guide-using-wet-scrubbers-for-combustible-dust-control-1) [Explosive Dust](https://www.slyinc.com/blog/category/explosive-dust/), [Wet Scrubber](https://www.slyinc.com/blog/category/wet-scrubber/) **Categories:** Explosive Dust, Wet Scrubber --- ### [How to Meet NFPA 652 Standards](https://www.slyinc.com/blog/how-to-meet-nfpa-652-standards/) **Published:** August 11, 2020 **Author:** p1ws **Content:** Most every industrial application creates dust and other harmful particulate. To maintain safe levels of air quality and comply with regulatory agencies, particularly with combustible dust, you need a way to manage air quality control, like using a dust collector or wet scrubber. According to the National Fire Protection Association (NFPA), combustible dust refers to any solid material composed of distinct particles or pieces less than 500 microns in size that can be a fire or deflagration hazard when suspended in air, or any other type of oxidizing medium, over a range of concentrations. Common examples of combustible dust include: - Agricultural products, like egg whites, soy flour, and powdered milk - Carbonaceous dust, such as coal, charcoal, and cellulose - Metallic dusts, like iron, aluminum, titanium, and magnesium - Plastic dusts, like polyacrylamide, polyethylene, and epoxy resins ## **The Dangers of Combustible Dust** Combustible dust can be a big problem, leading to dangerous explosions within a baghouse if the dust isn’t managed properly. In fact, a dry dust collector can be an unfortunately ideal environment to trigger a dust explosion. All an explosion needs are five key conditions, each of which can occur within a baghouse: - A combustible fuel, like dust - Enough of a dispersion of dust particles - Heat or an ignition source, like friction or static electricity - Oxygen - Confined dust clouds ![dust-explosions](https://www.slyinc.com/wp-content/uploads/2024/08/dust-explosions.png) Dust explosions can be catastrophic events, leading to the destruction of products and equipment – and worse – worker injuries and deaths. Hundreds of explosions have been documented by the Chemical Safety Board (CSB) over the years, with the Imperial Sugar Refinery explosion in Port Wentworth, Georgia, being an often-cited example, killing 14 employees and hospitalizing 40 others. According to the 2019 Mid-Year Combustible Dust Incident Report, there were 92 fires and 20 explosions between January and July alone. ## **Increased Regulations** In an effort to reduce the number of catastrophic events in the future, OSHA and the NFPA have continually implemented and updated regulatory standards to help companies mitigate the risk of a dust explosion. The NFPA’s most recent development is their NFPA 652, Standard on the Fundamentals of Combustible Dust. Serving as a sort of “first-step” for the NFPA’s new combustible dust regulations, NFPA 652 builds upon other standards like NFPA 61, NFPA 484, and NFPA 654 in order to create a unique standard separate from industry- and commodity-specific regulations. The biggest impact that this will have on industry is the requirement for every applicable facility to perform a Dust Hazard Analysis (DHA) before the quickly approaching date of September 7, 2020. With the NFPA requiring DHA updates every five years, this will be the new regulatory standard for combustible dust control, even if you’re reading this past the deadline or have already completed your DHA for this year. ## **How to Prevent Baghouse Explosions**  While the unequipped baghouse has multiple elements that make them more prone to explosions, there are multiple things that you can do to help prevent a spark, and the resulting explosion. Any of the following can be applied to a new dust collection system or an existing baghouse. If you are using a baghouse or cartridge filter, you can equip your collector with explosion vents to help mitigate the risk of an explosion. Explosion venting offers a passive way to limit risk by exhausting flames and relieving pressures typically associated with a dust explosion. For more active preventative measures, consider using a chemical suppression system. You can also lower your risk for an explosion by implementing any of the following: - Flameless venting or quench tubes - Grounded/conductive filter bags - External grounding of housing - Electrical enclosures and wiring All of these preventive measures add up to one thing – safer baghouses. ## **Can I Use a Wet Scrubber?** When it comes to reducing the risk of an industrial dust explosion and complying with NFPA standards, wet scrubbers – or wet dust collectors as they are sometimes called – can be a good option under the right conditions. By using scrubbing liquid to remove pollutants from an airstream instead of a filter media, the very mechanisms that allow wet scrubbers to work effectively mitigate the risk of a dust explosion. With a scrubbing solution, you can: - Remove heat sources and friction - Reduce dust clouds - Prevent direct oxygen-to-dust contact - Eliminate dust dispersion Any of these on their own would help to reduce the risk of an explosion, but put them together and you can almost entirely eliminate the chance that an explosion will ever occur, at least within the wet scrubber itself. No matter whether you use a wet scrubber or a baghouse, you’ll still need to worry about any process upstream or downstream from the collector itself. While effective for mitigating the risk of a dust explosion, wet scrubbers are not always the best choice for industrial air quality control, even when working with combustible dust. For instance, some dusts can be water-reactive, meaning that they can become hazardous when mixed with water. Scrubbers may also not adequately remove enough pollutants from an airstream in certain applications, particularly with processes that have heavy dust loadings, as the amount of water required may exceed desired efficiencies. For more on recent NFPA regulations that specifically relate to wet scrubbers, take a look at their NFPA 484, Standard for Combustible Metals. ## **The Sly Difference** Sly’s guide, [Using Wet Scrubbers for Combustible Dust Control](https://info.slyinc.com/wet-scrubber-handbook-lp-1), outlines the wide range of combustible dusts and explains how the use of a wet scrubber rather than a dry dust collection system can lower the risk of a dust explosion. It also provides an overview of the types of wet scrubbers available, as well as precautions and guidelines to follow if your facility must use a dry dust collection system instead of a wet scrubber. At Sly, we work closely with our customers to evaluate their applications and design the best solution for their specific needs. Even if you already have a dry dust collector installed or your application limits you to a dry dust collector, you can still reduce the chances for a dust explosion by following the advice in the guide. Download your copy of [Using Wet Scrubbers for Combustible Dust Control](https://info.slyinc.com/wet-scrubber-handbook-lp-1) to learn more about how to safeguard your facility and the people who work there. If you need help upgrading your approach to dust collection, [contact us](https://www.slyinc.com/contact/) or [request a quote](https://www.slyinc.com/contact/request-a-quote/). [Get the Guide Now](https://www.slyinc.com/resources/white-papers/guide-using-wet-scrubbers-for-combustible-dust-control/) [Explosive Dust](https://www.slyinc.com/blog/category/explosive-dust/), [Wet Scrubber](https://www.slyinc.com/blog/category/wet-scrubber/) **Categories:** Explosive Dust, Wet Scrubber --- ### [Dust Collector Sizing: What Size Do You Need?](https://www.slyinc.com/blog/dust-collector-sizing-what-size-do-you-need/) **Published:** August 22, 2018 **Author:** p1ws **Content:** A dust collection system is essential to any manufacturing process that creates nuisance or harmful contaminants in a confined environment. A dust collector filters particulates from factory air, collects the dust for disposal, and returns clean air to the environment. Alternatively, the dust collector can be an integral part of a powder processing system. ![long-term-storage-dust-equipment](https://www.slyinc.com/wp-content/uploads/2024/08/long-term-storage-dust-equipment.jpg)If a [dust collector](https://www.slyinc.com/products/dust-collectors/) is improperly sized, the escaped particulate matter can be harmful to the employee’s breathing and overall health. The dust can clog or lower the efficiency of factory equipment, and increase maintenance costs. In a process system, an improperly sized dust collector can restrict or limit production rates. When the correct dust collector size is chosen, it will operate at peak efficiency, improving safety, compliance and overall productivity. Multiple factors must be considered when selecting a dust collector system. With an understanding of these basic parameters, you will see why their calculation and application to your baghouse will benefit your process. Determining the correct size dust collector for your factory provides a budget-wise return on investment. The three primary calculations to determine the dust collector size you need are air volume, air-to-cloth ratio and interstitial velocity. ## Air Volume Air volume is the amount of air that will pass through the dust collector for cleaning. This is measured in cubic feet per minute (CFM). ## Determining CFM at Hoods *C F M = fpm x area* In this calculation, *fpm* is feet per minute of air velocity. Depending on the dust characteristics, the correct CFM value should be approximately 100–200 feet per minute of air velocity multiplied by the cross-sectional area of the hood in square feet. Accurate measurement of the volume of air going through the baghouse is vital for adequate ventilation. Inadequate ventilation can clog equipment, create an unsafe working environment and increase problematic environmental emissions. If there is any question about the correct CFM for your process, contact your professional baghouse supplier. ## Air-to-Cloth Ratio Within the baghouse, cloth filter bags are the workhorses in the dust collection process. These filter bags (also known as filter socks or filter tubes) are suspended from a tube sheet in the baghouse. Dirty air passes over or through them (depending on the baghouse technology used), and the dust adheres to the filter media. In a pulse-jet collector, the bags are cleaned automatically without interruption of filtration (on-line cleaning). The air-to-cloth ratio is the volume of air passing through one square foot of filter media. A conservative air-to-cloth ratio can extend filter life, while a higher air-to-cloth ratio could shorten the filter life. This ratio should be customized to the specific application conditions for maximum efficiency and filter life. To calculate the air-to-cloth ratio, divide the air volume flowing though the dust collector’s inlet ducts by the total cloth area. ![atocratio](https://www.slyinc.com/wp-content/uploads/2024/08/atocratio.png) The importance of the correct air-to-cloth ratio becomes even more evident in the interstitial velocity. ## Interstitial Velocity Interstitial velocity refers to the upward movement of air in the space between the filter bags in the dust collector. If the interstitial velocity is too high, the dust pulsed off the bag will be re-entrained back into the bag instead of falling into the hopper for removal. This can cause issues, including: - Shortened bag life - Incomplete cleaning of the bag - High pressure drops in the baghouse - Excessive use of expensive compressed air To design a dust collector for proper interstitial velocity, several types of adjustments can be made to add more space and more collection area. ## Benefits of a Correctly Sized Baghouse Dust collection is an essential and often-regulated component of any process that produces dust. Working with a reputable professional supplier or OEM will ensure that your air quality goals and dust recovery requirements are met. Your productivity advantages and cost savings with a properly sized and calibrated baghouse include: - Filter socks or dust bags that will clean while the system is online - Longer process runs, without unscheduled shutdowns for cleaning - Maintaining a correct pressure drop for uninterrupted airflow - Economizing on compressed air usage and volume - Eliminating recontamination of your factory air space - Maximum recovery of valuable dust A baghouse that is too large for the facility is a waste of resources in terms of cost, footprint and energy. Go too small with your baghouse, and it may appear you’ve saved on your initial investment, but the inefficiencies in collection could harm your staff, equipment and output. Sly is happy to work with you to get just the right size baghouse. You can [contact us](https://www.slyinc.com/contact/) or [request a quote](https://www.slyinc.com/contact/request-a-quote/). We look forward to helping you. [Contact ](https://www.slyinc.com/contact/) [Dust Collection System](https://www.slyinc.com/blog/category/dust-collection-system/) **Categories:** Dust Collection System --- ### [Five Key Steps Towards Mitigating Combustible Dust Hazards](https://www.slyinc.com/blog/five-key-steps-towards-mitigating-combustible-dust-hazards/) **Published:** December 1, 2022 **Author:** p1ws **Content:** A fine dust coating anywhere on equipment, ductwork or other areas of your facility means it is past time to institute proper housekeeping measures, and/or to evaluate the dust collection system. Even small quantities of dust, any accumulation, may be considered a workplace hazard depending on the type of dust, potential ignition sources and other circumstances. A proper dust control system, such as industrial dust collectors, or baghouses, from Sly, LLC, can help with combustible dust and air quality control. Dust mitigation procedures and equipment can help prevent profound consequences that can occur due to combustible dust. This includes preventing potential explosions or fires, but also extends to air permit compliance, regulatory fines, damaged equipment and more. While this applies to any type of dust, whether simple nuisance dust destined for disposal or dust collected for recovery and recycled back into the production stream, it is especially important regarding combustible dusts. It is the responsibility of every business owner and manager to ensure worker safety and site health by preventing dust explosions. If your facility has dust, the potential exists for a combustible dust event, and the need to design your dust collection system accordingly. ## Regulatory Agencies that Oversee Workplace Conditions  Regulatory agencies like OSHA are cracking down especially hard on operations with combustible dust,to create safer work environments. In fact, OSHA recently announced a more vigorous approach to keep companies accountable for worker safety by expanding its [Severe Violator Enforcement Program](https://www.osha.gov/enforcement/svep)(SVEP). The agency keeps a publicly available list on its website of severe violators, held accountable for any number of safety violations, including incidents related to combustible dust. Under its new standards, the agency will place employers in the SVEP once a company receives at least two “repeat, willful, or failure to abate violations for any ‘high gravity’ serious violation.”  ![combustible-dust-collection-2](https://www.slyinc.com/wp-content/uploads/2024/08/combustible-dust-collection-2-2.jpg) Employers will remain on the list for three years minimum and will be subject to a series of follow-up inspections. Violators can face citations, penalties, a costly blow to its reputation and the time and expense of dealing with the referral and follow up inspections. As part of a robust safety and health compliance program, dust collection and avoidance of combustible dust is a crucial step. There are tragic cases each year involving fires or explosions. One recent incident involves a milling company in Wisconsin, charged with federal crimes for violating safety rules and covering up the violations. In particular, the firm failed to regularly clean up combustible corn dust, which led to a 2017 explosion that killed five workers and injured 15 more. The company was accused of falsifying records to make it appear as if cleanings were completed. These agencies use standards such as NFPA 652 and, for applicable industries, require a dust hazard analysis (DHA). If your facility creates or handles particulates that are combustible, you likely need a DHA. Dust collection systems are a leading source of combustible dust incidents due to the concentration of fine particulates inside the equipment. Therefore, during the DHA, the system’s design will be reviewed. Inspectors will take a close look at the housing, hopper, inlet ducting, and outlet or return ducting of your dust collector to ensure your system was properly designed for explosion protection. While every application and dust collection system must be individually addressed to see how to best mitigate the risk of an explosion, there are some general tips that you can follow. Here are five steps plant managers, company owners or maintenance personnel can take to increase site safety and better adhere to regulatory guidelines: ## 1. Determine Your Dust’s Combustibility  NFPA recommends facilities analyze their particulate material to determine whether it is combustible. According to current NFPA guidelines, combustible dust can be any solid material comprised of particles less than 500 microns in size that are a fire hazard when suspended in air or a similar oxidizing medium. Companies might be working with materials that do not seem combustible at first. However, as they break down in processing and particulates fall off from handling, it can result in combustible dust. Certain industries’ manufacturing processes are more susceptible to combustible dust production than others. Some common materials include agricultural products such as soy flour, sugar, protein powders or powdered milk; carbonaceous dusts such as charcoal and soot, metallic dusts like aluminum and magnesium, and many different dusts from polymers. No matter the type of combustible dust, a first step involves determining the Kst (the dust deflagration index) and Pmax (maximum explosive pressure) of your dust. The larger these values, the more severe the potential explosion. Testing for explosive properties is typically done in a 20 liter or one cubic meter container. Additional testing for minimum explosive energy (MIE) and minimum and maximum explosive concentration (MEC) are also often done and helpful in determining the dusts’ combustibility and explosion risk. There are many companies that can provide this testing. Ask your SLY representative for these resources. This is also the time to determine if your dust has any other special qualities, such as: - Are there oils present? (i.e., a hybrid material of mist and powders combined) - Is the dust water reactive? (Certain metal dusts are highly reactive to water) - What is the dust loading? (minimum/maximum explosive concentration) - Does it flow easily or is it an exceptionally fine and abrasive material? Understanding the nature of the dust is critical to designing your dust collector. ## 2. Choose the Correct Dust Collector/Dust Collection System The inside of a dust collector supplies a prime location for a dust explosion when the system is not properly designed. Risk factors that need to be considered include ignition sources like static discharges, the dust cloud confinement, and potential buildup of dust on ledges or in pockets. For combustible applications, specify a dust collector that eliminates internal ledges and potential static buildup by proper bonding and grounding. When handling dusts prone to self-ignition such as coal, it is imperative to avoid storing any dust in the hopper itself, due to potential fire or deflagration risk. The collector housing must be designed to withstand the maximum expected internal pressure that may result from a dust explosion. This pressure may be either the dust tested Pmax or a lower dust Pred (reduced pressure) that results when explosion mitigation features are added. Image: Pulse jet baghouse with a suppression system to mitigate the risk of a dust explosion extending to other equipment ## 3. Choose the Proper Location for your Dust Collector  Once the results of the DHA reveal the level of risk, the next consideration is the location of the dust collector. Its location can influence a facility’s risk for damage and injuries, in addition to affecting selection of explosion-proof auxiliary equipment. The collectors that pose the greatest safety risk to workers are those located inside the facility, due to their proximity to workers and explosion proof options are more limited. It is easier to locate a nuisance dust collector at the end of a process line or outside of the plant, while process dust collectors typically must be inside a facility and integrated into the system. Housekeeping is a prime consideration when mitigating explosion risks and is especially critical for equipment located inside the plant building. ## 4. Add Explosion-Proof Auxiliary Equipment  Alleviate the risk of an explosion with auxiliary equipment that is integrated into your dust collection system. The three main types of auxiliary equipment include flameless vents, suppression systems and explosion venting. The above options are all available for use in outdoor dust collectors. Explosion venting is the most commonly selected option because it is easy to design and use and the most cost effective. Indoor systems are limited to flameless vents and suppression systems, with flameless vents being the most expensive. In some instances, explosion vents can be used on indoor units provided properly sized clear ducting can be installed to vent combustion products to a safe outdoor location. ### *Deflagration Venting Auxiliary Equipment*  Flameless vents—A flameless vent is also referred to as a quench tube because it quenches a flame arising from a deflagration. Its design allows for relieving the explosive pressure while retaining the flame within the vent housing to mitigate the potential explosion. Suppression systems—A suppression system can be installed on industrial machinery that handles combustible dust and can take the form of pressurized cylinders similar in nature to a fire extinguisher. Their suppressive action is automatically triggered in the event of a deflagration to help mitigate its affects. Explosion venting—An Explosion vent helps relieve internal pressure in the AMS (Air-Material-Separator) by blowing open during an event. They vent the pressure and combustion products outside the “exclusion zone,” or the immediate area surrounding the collection equipment, with a distance range that depends on multiple variables. In addition, relief vents should be located away from other dust hazard zones. Special attention should be paid to the ductwork that connects the dust collection system or baghouse to other pieces of equipment. A connected system of ductwork has, in the past, been associated with the spread of an initial explosion. Ductwork should undergo regular inspections to evaluate dust accumulation. SLY Inc. can supply isolation solutions for dusty air inlets, clean air outlet, and dust discharge. Another feature that can aid with reducing combustible dust incidences are grounded and/or conductive filter bags, external grounding of housing, and, of course, ensuring enclosures and wiring meet NFPA-70 (NEC). Other equipment, such as a sprinkler system, can also help if your dust is not water reactive. In cases where the material involved is water reactive, such as [zinc dust](https://www.sharonherald.com/news/zinc-dust-catches-fire-at-wheatland-tube/article_bd236602-3de4-11ed-907c-5331095332ef.html) or alkali metals, a dry chemical extinguisher kept on hand in the plant can provide an effective safety measure if a fire breaks out. Carbon dioxide suppression systems may also be employed. Sly representatives are prepared to assist in determining the best location and design equipment to protect your facility and personnel. ## 5. Train Employees to Handle Safety Equipment  Take the time to properly train employees about proper maintenance and housekeeping procedures and why they are important. In addition, have an incident response plan and techniques in place for safe work practices and ignition source control. OSHA incident reports often cite lack of proper training contributing to the severity of an event. The agency [offers a guideboo](https://www.osha.gov/sites/default/files/publications/3371combustible-dust.pdf)[k](https://www.slyinc.com/wp-content/uploads/2024/09/3371combustible-dust.pdf) to help work through hazard communications. Companies should also obtain the proper extinguishing media related to the type of combustible dust produced in the facility, and train workers how to use these extinguishers. It also helps to alert local emergency responders to the type of combustion situation they might encounter if called out to the facility and whether the dust is reactive to water. Fire extinguishers are rated according to the type of material they are designed to control. Keeping the proper safety equipment on hand can help control or diminish a fire to prevent it from growing. The types of design elements that SLY engineers factor into a dust collection system can include: - Material discharge height - Airlocks (takeaway equipment) - Continuous evacuation of the hopper (i.e., continuous discharge) - Proper venting or use of mitigation equipment - Pressure requirements - Fugitive dust and its prevention - Sparks or other ignition sources SLY Inc. [offers the expertise](https://www.slyinc.com/explosion-protection-expertise/) to work through designed solutions for combustible dust applications. Give us a call today to discuss your needs. Mike Maxwell is engineering manager, Sly Inc. (Strongsville, OH). For more information, call 800-334-2957. [Contact Us](https://www.slyinc.com/contact/) [Dust Collection System](https://www.slyinc.com/blog/category/dust-collection-system/), [Dust Collector](https://www.slyinc.com/blog/category/dust-collector/) **Categories:** Dust Collection System, Dust Collector --- ### [Clean Air, Clear Business: Industrial Dust Collection Solutions](https://www.slyinc.com/blog/industrial-dust-control-ultimate-guide/) **Published:** December 22, 2025 **Author:** Al Moretti **Excerpt:** Optimize operations with effective industrial dust collection dust control. Ensure safety, compliance, and efficiency. Learn how! **Content:** ## Why Industrial Facilities Need Reliable Dust Control Systems Industrial dust collection systems are engineered to capture, transport, filter, and contain airborne particulate matter generated during manufacturing and processing. These systems are crucial for protecting worker health, ensuring regulatory compliance, preventing combustible dust explosions, and improving operational efficiency. **Core components of a dust collection system:** - **Source capture:** Hoods and enclosures at the point of dust generation. - **Air movement:** Fans and ductwork to transport contaminated air. - **Filtration:** Baghouses, cartridge collectors, or wet scrubbers to remove particles. - **Cleaned air discharge:** Returning filtered air to the facility or exhausting it outside. - **Dust disposal:** Hoppers and conveyors for safe material removal. Without proper control, industrial dust can lead to health hazards, safety risks, and regulatory violations. Modern dust collection technology, however, can capture over 99% of harmful particles while minimizing energy consumption and maintenance. Choosing the right system for your specific needs is key to a cleaner, safer, and more productive facility. Beyond the basic building blocks, high-performing systems are engineered as an integrated system. Effective source capture relies on properly designed hoods and adequate capture velocity at the point of generation, while balanced ductwork maintains transport velocities that prevent settling and plugging. The fan must be selected against the total system static pressure, and its performance should be matched to the process operating envelope—often with a variable frequency drive (VFD). Filtration performance is driven by air-to-cloth ratio, media selection, and the efficiency of the cleaning mechanism. Pulse-jet cleaning, reverse-air, or shaker styles are chosen based on dust characteristics and duty cycle. Where applicable, pre-separation (e.g., cyclones or drop-out boxes) can reduce loading on the primary collector, lowering wear and extending filter life. For combustible dusts, compliant explosion protection and isolation devices must be integrated from the start, not added as an afterthought. To sustain performance, facilities increasingly employ continuous monitoring—differential pressure to assess filter loading, airflow measurements to verify capture, and broken-bag/leak detection to protect downstream equipment or product quality. Tying these measurements into a plant PLC or building management system enables proactive maintenance and rapid troubleshooting. Key performance parameters that are commonly tracked during operation include: - Differential pressure across the collector (filter health and energy impact) - Capture and transport velocities (process control and plug prevention) - Emission rates at the outlet (regulatory compliance) - Compressed air consumption for pulse cleaning (operating cost) With the right design, controls, and maintenance strategy, dust collection becomes a strategic asset—supporting EHS goals, product quality, and throughput—rather than just a compliance expense. ## Why Effective Dust Control is a Business Imperative Failing to manage industrial dust can have severe consequences, impacting worker health, operational safety, regulatory emission compliance and ultimately your bottom line. An effective **industrial dust collection and control** system is not just about cleanliness; it’s a critical business investment. For a deeper dive, see our article on [industrial dust and dust safety](https://www.slyinc.com/blog/industrial-dust-and-dust-safety-your-questions-answered/). ### Health, Safety, and Regulatory Compliance Uncontrolled dust poses significant health risks, including respiratory diseases like asthma, bronchitis, and silicosis. It also creates immediate safety hazards by reducing visibility and creating slip-and-fall risks. Government agencies like OSHA and the EPA have strict regulations regarding air quality and dust exposure. Non-compliance can result in heavy fines and operational shutdowns. A properly designed **industrial dust collection and control** system is essential for meeting these standards and protecting your workforce. Need help navigating the compliance maze? Our [OSHA compliance resources](https://www.slyinc.com/blog/category/osha-compliance/) can guide you. For authoritative guidance on exposure limits and control strategies, consult the NIOSH/CDC Dust Control Handbook for Industrial Minerals [Dust Control Handbook for Industrial Minerals Mining and Processing](https://www.cdc.gov/niosh/docs/mining/UserFiles/works/pdfs/2019-124.pdf) and OSHA resources such as the page on respirable crystalline silica. These references complement your internal EHS policies and help align engineering controls with the hierarchy of controls to reduce worker exposure at the source. ### Mitigating Combustible Dust Explosions Many industrial dusts, such as wood, grain, and metal, are combustible. When suspended in the air in a confined space, they can ignite and cause devastating explosions. The “dust explosion pentagon” outlines the five elements needed for this to occur: fuel, oxygen, an ignition source, dispersion, and confinement. A poorly designed dust collector can create this exact scenario. Proper **industrial dust collection and control** systems incorporate safety features like explosion venting, isolation devices, and suppression systems to mitigate these risks, ensuring compliance with NFPA standards like NFPA 660.. Learn more in our guide on [five key steps towards mitigating combustible dust hazards](https://www.slyinc.com/blog/five-key-steps-towards-mitigating-combustible-dust-hazards/) and explore our resources on [explosive dust](https://www.slyinc.com/blog/category/explosive-dust/). For broader background and regulatory context, see OSHA’s overview of [combustible dust](https://www.osha.gov/combustible-dust) and NFPA’s page for [NFPA ](https://www.nfpa.org/codes-and-standards/all-codes-and-standards/list-of-codes-and-standards/detail?code=652)660. ### The Economic Case for Dust Collection Investing in a robust dust control system delivers a strong return on investment: - **Improved Productivity & Retention:** A cleaner, safer workplace boosts morale and reduces employee turnover. - **Reduced Equipment Maintenance:** Protecting machinery from abrasive dust minimizes wear and tear, leading to less downtime and fewer repairs. - **Material Recovery:** Collected dust can often be repurposed or sold, turning waste into a revenue stream. - **Lower Insurance Premiums:** Demonstrating proactive risk management can lead to more favorable insurance rates. This comprehensive approach is what we call [total dust management](https://www.slyinc.com/blog/total-dust-management/), protecting people, ensuring compliance, and strengthening your financial position. In many facilities, optimizing air-to-cloth ratios, right-sizing fans for actual process conditions, and applying VFDs can significantly reduce electrical consumption—often the largest operating cost in dust collection. Likewise, tuning pulse-jet cleaning parameters cuts compressed air use and extends filter life, reducing both maintenance labor and consumables. By factoring in avoided downtime, fewer changeouts, and potential material recovery, organizations frequently see measurable payback over a short horizon while improving EHS performance and regulatory certainty. ## The Core of Industrial Dust Collection Dust Control: System Types Choosing the right dust collection system is crucial and depends on factors like dust type, particle size, and airflow requirements. The three common types are baghouses, cartridge collectors, and wet scrubbers. For a detailed guide, see our article on [How to Choose a Dust Collection System](https://www.slyinc.com/blog/how-to-choose-a-dust-collection-system/). ### Baghouse Dust Collectors Baghouses, or fabric filters, are the workhorses of **industrial dust collection and control**. They capture dust by passing contaminated air through large fabric bags. The accumulated dust cake is then periodically cleaned off, often by a pulse-jet of compressed air. **Best for:** - High-volume and high-temperature applications. - Abrasive or sticky dusts. - Industries like cement, mining, and chemical processing. As pioneers in this technology since 1902, we specialize in custom baghouse designs. Learn more in our article, [What is a Baghouse?](https://www.slyinc.com/blog/what-is-a-baghouse/) and on our [Baghouse System page](https://www.slyinc.com/blog/category/baghouse-system/). ### Cartridge Dust Collectors Cartridge collectors use pleated filter media, providing a large surface area in a compact design. This makes them highly efficient for capturing fine particles. Like baghouses, they are typically cleaned with a pulse-jet system. **Best for:** - Fine dust, fumes, and smoke (e.g., welding, laser cutting). - Facilities with limited space. - Applications in pharmaceuticals, food processing, and metalworking. For more details on these efficient systems, explore our [Cartridge Filters information](https://www.slyinc.com/blog/category/cartridge-filters/). ### Wet Scrubbers Wet scrubbers use a liquid, usually water, to “scrub” contaminants from the air. The dust-laden air is mixed with liquid droplets, and the resulting slurry is collected for disposal. **Best for:** - Combustible or explosive dusts, as the wet process helps to mitigate ignition risks. - Sticky or moist materials that would clog dry filters. - High-temperature applications and removal of certain gaseous pollutants. We design and build a variety of wet scrubbers, including venturi, Impinjet, eductor, and packed bed types, to meet specific industrial needs. Learn more in our guide, [What You Need to Know About Wet Scrubbers](https://www.slyinc.com/blog/what-you-need-to-know-about-wet-scrubbers/), and on our dedicated product page for [More info about Wet Scrubbers](https://www.slyinc.com/products/industrial-wet-scrubbers/). ### Comparing Dust Collector Types | Collector Type | Best For | Key Characteristics | Maintenance Level | |---|---|---|---| | **Baghouse** | High-volume dust loads, abrasive materials, high temperatures, harsh environments | Large capacity, handles challenging dusts, various filter media options, proven reliability | Moderate; requires periodic filter bag replacement, regular hopper emptying, and inspection of cleaning mechanisms | | **Cartridge** | Fine particles, compact spaces, intermittent operations, metalworking, powder coating | High efficiency on fine dust, smaller footprint, easy cartridge replacement, excellent for welding fumes | Lower; cartridges are easier to change than bags, less frequent replacement needed for fine dust applications | | **Wet Scrubber** | Combustible or explosive dusts, sticky or moist materials, high temperatures, gas absorption needed | Eliminates ignition risk, handles difficult dusts, cools gas streams, dual pollutant removal | Higher; requires water management, slurry disposal, potential pump and nozzle maintenance, corrosion monitoring | ## Selecting the Right System for Your Application Choosing the right dust collection system requires a thorough analysis of your specific needs. Key factors to consider include: - **Dust Characteristics:** Is the dust fine, coarse, abrasive, sticky, or combustible? - **Operating Conditions:** What are the temperature and humidity levels of the airstream? - **Airflow Requirements:** What volume of air (CFM) needs to be processed? - **Regulatory Compliance:** What are the specific OSHA, EPA, and NFPA standards for your industry? A **Dust Hazard Analysis (DHA)** is often the first step, especially for combustible dusts. This analysis informs the entire system design, from the type of collector and filter media to the sizing of the fan and ductwork. **Filter media selection** is also critical. Materials like polyester, aramid, and PTFE, along with special treatments (e.g., oleophobic, fire-retardant), are chosen based on the dust’s properties and operating environment. For expert guidance on these technical details, see our articles on [Design Considerations for Your Next Dust Collection System](https://www.slyinc.com/blog/design-considerations-for-your-next-dust-collection-system/) and [How to Select the Correct Filter Media](https://www.slyinc.com/blog/how-to-select-the-correct-filter-media/). Expanding the evaluation to the full air-movement system pays dividends. Hood design and placement drive capture efficiency; duct sizing and layout preserve transport velocity and avoid excessive static pressure; and fan selection should reflect both peak and typical operating points. Referencing established engineering guidance like the ACGIH Industrial Ventilation manual can help define target capture velocities and hood geometries for common processes (Industrial Ventilation: A Manual of Recommended Practice). Where dust loadings are high or particles are coarse or abrasive, adding pre-separation (e.g., cyclones or dropout boxes) upstream of the primary collector can extend filter life and reduce maintenance. For hot or humid airstreams, insulation and heat tracing may be necessary to prevent condensation and mudding in ducts or on filters. For combustible or spark-prone applications, consider upstream spark detection/abatement and compliant explosion protection integrated with the collector. Before you spec or issue an RFQ, gather the following data to accelerate design and ensure accurate sizing: - Material safety data and dust characterization (particle size distribution, moisture, bulk density, abrasiveness, combustibility testing if applicable) - Process description and duty cycle (continuous vs. batch, upset conditions, expected turndown - Design flow rate (acfm) including source list with estimated capture volumes and hood types - Environmental conditions (temperature/humidity ranges, corrosion concerns) - Footprint, utilities, and discharge/disposal requirements (including reclaim needs) A disciplined approach to these inputs, coupled with a DHA where required, leads to a right-sized solution that meets performance and compliance targets with minimal lifecycle cost. **Categories:** Industrial Dust Collector --- ### [What is Total Dust Management?](https://www.slyinc.com/blog/what-is-total-dust-management/) **Published:** March 1, 2021 **Author:** p1ws **Content:** Do you have a dust problem? Are you concerned with the air quality in your facility? If so, then you need to use proper air quality control equipment, like a dust collector or wet scrubber, to ensure that you keep your site safe and maintain regulatory compliance. [![Total Dust Management Process](https://www.slyinc.com/wp-content/uploads/2024/08/Total-Dust-Management-Process.jpg)](https://info.slyinc.com/dry-dust-collection-handbook) However, improving the air quality in your facility isn’t as easy as picking a dust collector out of a catalog and hoping for the best. You need to choose an air quality control solution tailored to the specific needs of your application if you want to optimize the performance and efficiency of your dust collector. That’s the idea behind total dust management. Total dust management is about taking a full-service, systematic approach to dust control, where air quality experts help you to specify the right collector for the job. The benefits of total dust management include: - Improved dust control - Higher dust collection efficiencies - Longer collector life - Reduced downtime ## **The Total Dust Management Process**  You know that you have a dust problem. Now, what do you do? The first step should be to partner with dust collection experts to help you determine your specific requirements and dust management needs. It’s important that whoever you partner with has extensive experience handling a variety of dust across various industries. That way, they can draw from their past experience to help you find a better solution faster. Once you find the right partner, the total dust management process will involve the following: ### Determining Your Dust Management Needs In order to find the right air quality control solution, you have to find out what kind of dust you have. Are you dealing with process dust or fugitive dust? Does it come from powdered food products like grains or spices, or is it something more like sand or sawdust? Whatever the dust is, you’ll want to determine the bulk density and particle size distribution. This can be done through a particle analysis. Knowing the bulk density will help with re-entrainment and filter design, while the particle size distribution can help predict dust collector performance. After figuring out what will be going into your dust collector, you need to know what you want out of it. Determining your emission requirements will depend on the required EPA emission standards for your industry/application. Since there are so many different EPA standards, you cannot always expect a standard dust collector to meet the specific EPA standards surrounding your operations. If you are handling combustible dust, you must also get a Dust Hazard Analysis, or DHA, performed. NFPA 652, the Standard on the Fundamentals of Combustible Dust, requires any facility with potentially explosive dust to get a DHA. Your DHA will help you evaluate your dust management needs and identify any potential problems with combustible dust. Properly handling combustible dust will help mitigate your chance of a dust explosion, keeping your facility and workers safe. ### Finding the Right Dust Collector Once you know what kind of dust you are dealing with and your emission goals, it’s time to choose the right type of dust collection equipment. Dust collectors are broken down into two categories: [**dry dust collectors**](https://www.slyinc.com/products/dust-collectors/) and [**wet scrubbers**](https://www.slyinc.com/products/wet-scrubbers/). Both types of equipment have their inherent advantages and disadvantages, making the decision of which is the right one entirely dependent on your application. Dry dust collectors, also called baghouses, have long been the go-to collector for enhanced air quality control. They offer high collection efficiencies, enhanced versatility and require the least amount of energy. Types of dry dust collectors include: - Pulse jet collectors - Cartridge filter collectors - Reverse air collectors Wet scrubbers, also referred to as wet dust collectors, are great for removing a variety of pollutants from your airstream or handling difficult dusts. Instead of using a filter bag or cartridge, they remove dust and pollutants via a scrubbing fluid. Types of wet scrubbers include: - Venturi wet scrubbers - Impinjet® wet scrubbers - Eductor wet scrubbers - Packed tower scrubbers You’ll want to work closely with your supplier to determine the best type of dust collector for your application. However, to help get you on the right path, here’s a quick reference guide: ![](https://www.slyinc.com/wp-content/uploads/2024/08/image-png-3.png) [ ](https://info.slyinc.com/dry-dust-collection-handbook) After picking the right type of dust collector for the job, you’ll want to work with your supplier to customize it to best fit your needs. ### Ongoing Maintenance and Repair Total dust management doesn’t end once you install your dust collector in your facility. Without regular inspections and maintenance, your equipment’s collection efficiencies and performance could go down, causing you to lose control of your dust management. One of the most important things to monitor is the pressure drop of your collector. A sudden spike in pressure drop can indicate a decrease in dust collection efficiencies and a major problem for your plant. Some municipalities and states may also require you to closely monitor pressure drop, especially if you have a hazardous application. Monitoring pressure drop and collection efficiencies will allow you to keep your permits and secure the ongoing success of your business. For best results, switching out certain parts of your collector at regular intervals is also recommended to maintain optimal operations. Typical replacement parts include filter bags, cartridges, solenoid valves, and timer boards. ## **Sly: The Total Dust Management Experts**  Here at Sly, with nearly 150 years of experience in air quality control, we know how to handle dust. We can customize a solution to your specific needs, no matter your application or what kind of dust you’re dealing with. As an expert in total dust management, Sly offers a full-service solution for dust control. Our offerings include: - Particle analysis services - Operation expertise and explosion-proofing systems - Customizable baghouses and wet scrubbers - Maintenance assistance and quality replacement parts - Filter bag failure analysis services Every solution from Sly is optimized for maximum dust collector performance, efficiency, and service life. If you want to improve your air quality control with the best duct collection system available, partner with Sly’s total dust management experts. [Download the Dry Dust Collection Handbook](https://info.slyinc.com/dry-dust-collection-system-design-guide-1) [Dust Collection Equipment](https://www.slyinc.com/blog/category/dust-collection-equipment/), [Dust Collection System](https://www.slyinc.com/blog/category/dust-collection-system/), [Dust Collector Maintenance](https://www.slyinc.com/blog/category/dust-collector-maintenance/), [Industrial Dust Collector](https://www.slyinc.com/blog/category/industrial-dust-collector/) **Categories:** Dust Collection Equipment, Dust Collection System, Dust Collector Maintenance, Industrial Dust Collector --- ### [Design Considerations for Your Next Dust Collection System](https://www.slyinc.com/blog/design-considerations-for-your-next-dust-collection-system/) **Published:** June 26, 2018 **Author:** p1ws **Content:** The process of designing a system requires a comprehensive look at all of the specifics of the application and environmental requirements. The basic components of dust collection system design can be broken down into three areas: - Containing or capturing the dust - Conveying it to the collector - Collecting the dust ## Containing or Capturing the Dust ![drydustblog1](https://www.slyinc.com/wp-content/uploads/2024/08/drydustblog1.png)The system design begins with identifying and mapping out those areas and processes that are generating dust. These collection points might include obvious dust-generating material handling equipment, such as conveyor transfers, bucket elevators, bagging, or pneumatic conveying. The next step is to determine if the dust at each point should be controlled with a collection hood or contained within an enclosure. In either case, sufficient capture velocity must be generated to contain dust in the enclosure or move dust to the hood, including overcoming any surrounding air currents that would prevent the flow of dust into the hood. Calculating the air volume is critical to proper [dust collection system](https://www.slyinc.com/products/dust-collectors/) design. Insufficient air volume will result in inadequate dust collection and a disappointing installation. The basic formula for calculating air volume is Q= V x A. Q is the volume of air (cubic feet per minute), V is the desired velocity at the hood (feet per minute), and A is the open area of the hood (square feet) into which the air will be drawn. For example, if we have a hood opening that is 18″ x 18″ and have determined the correct velocity is 250 fpm, then we would calculate the air volume to be 2.25 square feet x 250 feet per minute, which equals 562.5 cubic feet per minute. Conversely, if we know the volume of air and the desired conveying velocity, we can calculate the optimal duct sizes using the same formula, which is expressed as A=Q /V. ## Conveying: Keeping It Moving ![drydustconveying](https://www.slyinc.com/wp-content/uploads/2024/08/drydustconveying.png)Once the dust has been captured, it is conveyed through ductwork to the dust collector. A key component of duct design is knowing the bulk density and loading (amount of material to be collected) of the dust being conveyed because these values affect the required conveying velocities in the ductwork. Conveying velocity (the speed of the air that is carrying the dust) should increase with an increase in the bulk density. The best way to design an efficient system is to limit the amount of ductwork and the areas where additional air flow resistance and turbulence can be created, such as elbows or other transitions. System static pressure is calculated by adding the combined resistance of the worst case of an inlet duct, including elbows and transitions, plus pressure drop across the dust collector, the fan outlet duct and stack, or any ductwork that is used to return air to the facility if a stack is not used. Once the required air volume (CFM) and system static pressure (inches of water column) for the system are defined, the correct dust collector can be selected. ## Collection: Choosing a Well-Balanced, Efficient System Selection of the dust collector model involves understanding the type of dust, particle size (microns), inlet dust loading (pounds/hour), temperature, chemical composition of the gas or air, and the desired outlet emission rate (grains/standard cubic foot or pounds/hour.) The final design consideration is the selection of the exhaust fan used to move the dust-laden air from the collection points through the ductwork and through the dust collector. The fan or blower is sized to generate the design air flow at the calculated static pressure. To learn more about designing an efficient dust-collection system, including modifications for handling combustible dusts, download a free copy of the [***How to Design a Dust Collection System*** ](https://info.slyinc.com/dry-dust-collection-handbook-1)white paper. [Download the Guide](https://info.slyinc.com/dry-dust-collection-system-design-guide-1) [Dust Collection System](https://www.slyinc.com/blog/category/dust-collection-system/) **Categories:** Dust Collection System --- ### [Frac Sand Processing: What You Need to Know About Facilities and Operations](https://www.slyinc.com/blog/frac-sand-processing-what-you-need-to-know-about-facilities-and-operations/) **Published:** February 25, 2026 **Author:** Al Moretti **Excerpt:** The Fundamentals of Frac Sand Production Frac sand processing transforms raw silica sand deposits into specialized proppants that keep underground fractures open during hydraulic fracturing operations. **Content:** ## The Fundamentals of Frac Sand Production **Frac sand processing** transforms raw silica sand deposits into specialized proppants that keep underground fractures open during hydraulic fracturing operations. This industrial process is essential to oil and gas extraction—the U.S. shale industry alone consumed an estimated 112 million tons of proppant in 2022. **Quick Overview: What is Frac Sand Processing?** 1. **Mining** – Extract high-purity quartz sandstone from deposits (primarily in Wisconsin, Texas, and Minnesota) 2. **Wet Processing** – Wash, scrub, and classify sand to remove clay, silt, and other impurities 3. **Drying & Sizing** – Dry the sand and sort it into specific mesh sizes (typically 20/40, 40/70, or 100 mesh) 4. **Quality Control** – Test for crush resistance, sphericity, and purity 5. **Transport** – Ship finished product to drilling sites via rail or truck The process requires careful attention to quality standards. Frac sand must have uniform particle size, high crush strength (6,000-14,000 psi), and exceptional purity to function properly as a proppant. A single well can require up to 10,000 tons of sand. Industrial facilities process approximately 250 tons per hour, operating 24/7 to meet this demand. The production process creates significant environmental challenges. One study found that 79% of air samples collected at frac sand sites exceeded exposure limits for silica dust. Water usage is equally intensive—one mine can demand up to 2 million gallons of water daily. For facility managers, the biggest operational concerns are managing silica dust emissions, recovering and reusing process water, and meeting increasingly strict air quality regulations. ![Infographic showing the frac sand processing workflow from mining through wet processing, drying, quality testing, and final transport, with key equipment and environmental controls at each stage - Frac sand processing infographic ](https://images.bannerbear.com/direct/4mGpW3zwpg0ZK0AxQw/requests/000/118/264/260/bknAjN4e763yw9mlYXPRKxlD8/0e7be48f249a777be6c3dd3e8ebcc1cf23b0e4af.jpg "Infographic showing the frac sand processing workflow from mining through wet processing, drying, quality testing, and final transport, with key equipment and environmental controls at each stage - Frac sand processing infographic ") ## What is Frac Sand? Properties, Types, and Market Demand Frac sand, also known as proppant, is far more than ordinary sand. It’s a highly specialized material that plays a critical role in unlocking hydrocarbons deep within the earth. Without it, the hydraulic fracturing (or “fracking”) process would not be nearly as effective. Let’s take a closer look at what makes this sand so unique. ### Essential Properties and Attributes When we talk about frac sand, we’re talking about a material with very specific characteristics. These aren’t just nice-to-haves; they’re essential for the sand to perform its job under immense pressure, thousands of feet underground. First and foremost, frac sand is derived from high-purity quartz sandstone. This geological origin is key, as it provides the fundamental strength and chemical inertness required. You can learn more about the geological context in this [geological overview of frac sand](https://pubs.usgs.gov/of/2015/1107/). Next, we look at its physical shape: sphericity and roundness. Imagine trying to prop open a tiny crack with jagged, irregularly shaped rocks. Not very effective, right? Frac sand particles are ideally round and spherical. This shape allows them to pack efficiently, creating permeable pathways for oil and gas to flow. It also reduces friction during injection and helps the sand withstand crushing forces. Speaking of crushing forces, high crush strength is paramount. Once injected into a fractured rock formation, the sand must withstand the immense pressure exerted by the surrounding rock. If the sand particles crush, they turn into fine dust (fines) that can clog the pathways, defeating the purpose of fracturing. Frac sand typically has a compressive strength of approximately 6,000 to 14,000 pounds per square inch (psi). This incredible resilience ensures the fractures remain open and productive. Finally, low turbidity is a critical quality. Turbidity refers to the cloudiness of a fluid caused by suspended particles like dirt, silt, or clay. In frac sand, high turbidity indicates impurities that can reduce the sand’s effectiveness. These impurities can also block the tiny pathways that facilitate the flow of oil and gas. Therefore, processing aims to produce exceptionally clean sand with very low turbidity. ### Common Types and Sizes Just like we have different tools for different jobs, there are various types and sizes of frac sand, each suited for specific geological conditions and fracturing strategies. Historically, “Northern White” sand from the Great Lakes Region has been highly prized for its exceptional roundness, sphericity, and high silica content. The Great Lakes Region, consisting of Illinois, Minnesota, Michigan, and southern Missouri, contributed approximately 70% of the silica sand used in America as a proppant in 2014. This naturally occurring, well-sorted sand sets a high bar for quality. However, the industry has also seen the rise of “in-basin” sand, which refers to sand mined closer to drilling sites. While it may not possess the same pristine qualities as Northern White, its proximity significantly reduces transportation costs, making it an attractive option. Frac sand is carefully sorted into various mesh sizes, which refer to the sieve sizes used to classify the particles. Common mesh sizes include 20/40, 30/50, 40/70, and 100 mesh. The “20/40 mesh” range, for example, means particles pass through a 20-mesh sieve but are retained on a 40-mesh sieve, typically falling within the 0.6 to 0.8 millimeters (mm) range. Different well formations and fracturing designs require different sand sizes to optimize conductivity. Beyond natural silica sand, there are also resin-coated proppants. These are natural sand grains coated with a synthetic resin to improve their strength, prevent fines generation, and, in some cases, facilitate flowback control. While more expensive, they offer superior performance in certain demanding applications. ### Factors Influencing Demand The demand for frac sand is a dynamic beast, closely tied to the broader energy market. Several key factors cause its fluctuations. The most obvious drivers are oil and gas prices and drilling activity. When energy prices are high, drilling becomes more profitable, leading to an increase in new wells and, consequently, a surge in demand for frac sand. Conversely, a downturn in energy markets can quickly lead to reduced drilling and a drop in sand demand. Well completion intensity also plays a significant role. Modern fracturing techniques often involve longer horizontal wells and more fracturing stages, each requiring substantial amounts of proppant. For instance, each well may require up to 10,000 tons of sand, and industrial wells may require hundreds of tons daily. Over its lifetime, each natural gas or oil well uses [millions of pounds of this sand](https://news.nationalgeographic.com/news/energy/2013/07/130703-wisconsin-fracking-sand-rush/). The frac sand market has also experienced boom-and-bust economic cycles. Periods of rapid growth driven by high demand can lead to oversupply as new mines open, eventually causing prices to fall and some operations to become uneconomical. This volatility can create challenges for local communities that rely on the industry for jobs and revenue. ## The Complete Frac Sand Processing Workflow From raw earth to highly specialized proppant, the journey of frac sand is a multi-step process that demands precision and robust machinery. ### Step 1: Mining and Extraction The first stage of **frac sand processing** begins with identifying and extracting the raw material. Site selection is a critical initial step that relies on extensive geological assessment to locate high-purity quartz sandstone deposits. These assessments ensure the quality and quantity of sand required for profitable operations. Surface mining, typically open-pit operations, is the most common extraction method. This involves removing the “overburden”—layers of soil, rock, and vegetation that lie above the valuable sand deposit. Heavy machinery, such as industrial scrapers and tracked excavators, is used for this task. The removed topsoil and unwanted rock layers are often carefully stacked for future mine reclamation efforts. Once the overburden is cleared, the sandstone deposit is exposed. Because the sand is actually rock, it must be pulverized. If the sandstone deposits are particularly large or consolidated, explosives may be used to break them into manageable sizes. This initial crushing step reduces the raw material to a size suitable for transport and further processing. For a deeper dive into the mining process, you can refer to insights from the [frac sand mining process](https://wgnhs.wisc.edu/wisconsin-geology/frac-sand-mining/frac-sand-mining-process/). ### Step 2: Wet Processing Once the raw sandstone is mined and initially crushed, it enters the wet processing stage. This is where the sand truly begins its change into a high-quality proppant. The goal here is to thoroughly wash, purify, and classify the sand. The first major task is washing and scrubbing. The mined sand is typically mixed with water to create a slurry. This helps to remove loose dirt and initial impurities. Aggressive scrubbing, often using specialized equipment like attrition scrubbers, then takes place. These scrubbers use a “particle-on-particle attrition” principle, where sand grains are vigorously agitated against each other in a high-density slurry. This action effectively liberates stubborn clays, silts, and other deleterious materials that cling to the silica particles, significantly improving the sand’s cleanliness and reducing its turbidity. Following scrubbing, the sand undergoes sizing and classification. This process separates sand particles into precise size ranges required by end users. Various screens and hydraulic classifiers are employed. Hydraulic classifiers work on the principle of “hindered settling,” using an upward flow of water to separate particles based on their size and density. This allows for extremely sharp and accurate separations, ensuring that only the correctly sized sand proceeds. Finally, dewatering is a crucial step. After all the washing and scrubbing, the sand is saturated with water. The wetter the sand, the more expensive and energy-intensive it is to dry. Dewatering equipment, such as dewatering screens, removes excess moisture, typically reducing the water content to 10-15%. This prepares the sand for the next stage, minimizing fuel consumption in the subsequent drying process. Here’s a list of key wet processing equipment commonly used: - **Hydraulic classifiers:** For precise size and density separation. - **Attrition scrubbers:** To aggressively clean sand by removing clays and impurities through particle-on-particle abrasion. - **Dewatering screens:** To efficiently remove excess water, preparing the sand for drying. ### Step 3: Drying, Final Sizing, and Transport With the sand now clean and dewatered, it moves to the final stages of processing before it’s ready for market. The dewatered sand proceeds to rotary dryers, large rotating cylindrical kilns that use heat to remove the remaining moisture. This step is critical because dry sand is much easier to handle, store, and transport, and its performance as a proppant relies on its dryness. After drying, the sand undergoes final screening and sorting. This is a meticulous process in which the sand is passed through a series of vibrating screens with varying mesh sizes. This ensures that the sand is precisely classified into the specific mesh sizes (e.g., 20/40, 40/70, 100 mesh) demanded by the oil and gas industry. Any oversized or undersized particles are removed, ensuring a consistent, high-quality product. Once sorted, the finished frac sand is typically moved to large stockpiles or directly into storage silos, awaiting transportation. Transportation logistics are a significant part of the **frac sand processing** chain. The sand is typically loaded onto railcars or specialized trucks for delivery to well sites across the country. The efficiency of this “last mile” logistics can have a substantial impact on overall costs and environmental footprint. ## Quality Assurance and Regulatory Compliance Ensuring frac sand quality and adhering to environmental regulations are two sides of the same coin in this industry. Both are non-negotiable for responsible and successful operations. ### Quality Control in Frac Sand Processing Quality control isn’t just a suggestion in frac sand production; it’s a stringent requirement. The performance of a well can hinge on the quality of the proppant used. Industry standards, such as those set by the American Petroleum Institute (API RP 19C), provide the benchmarks we strive to meet. These standards cover a range of critical properties. One of the fundamental tests is sieve analysis. This involves passing a sample of sand through a series of progressively finer sieves to determine its exact particle size distribution. This is how we ensure the sand meets specific mesh size requirements (e.g., 20/40, 40/70). Crush resistance testing is equally vital. Samples of sand are subjected to high pressures to simulate downhole conditions, and the amount of fines generated is measured. This test confirms the sand’s ability to withstand compressive forces without degrading. Turbidity and solubility tests are performed to assess the purity of the sand. Turbidity tests measure the amount of suspended solids, while acid solubility tests identify non-silica pollutants. Contaminant percentages over 3% in acid solubility tests are typically not considered within industry specifications. Beyond basic measurements, advanced computer analysis is often used to get detailed insights into particle shape, sphericity, and roundness. This ensures that the sand grains have the optimal physical characteristics to maintain fracture conductivity. ### Navigating the Regulatory Landscape The **frac sand processing** industry operates under a complex web of regulatory requirements designed to protect both the environment and local communities. The permitting process is extensive and involves various federal, state, and local agencies. These permits cover air quality, water use, wastewater discharge, and land use. For instance, state-level departments of natural resources often oversee industrial sand mining and require facilities to follow comprehensive regulations. While specific regulations vary by state, many share common goals. For example, the Minnesota DNR provides information on silica sand regulations that illustrate the type of oversight common in regions with frac sand operations. Similarly, the [Wisconsin nonmetallic mining code (NR 135)](https://docs.legis.wisconsin.gov/code/admin_code/nr/100/135) outlines reclamation requirements, demonstrating how states implement rules for environmental protection. There’s often a division of labor between state and local oversight. State agencies typically handle permits for air emissions, water withdrawals, and wastewater discharges, focusing on broader environmental protections. Local governments, on the other hand, often manage zoning, noise ordinances, traffic impacts, and reclamation plans, addressing immediate community concerns. This multi-layered approach ensures comprehensive regulation. Environmental impact assessments (EIAs) are a crucial part of the process. Before a mine or processing facility can be established, a thorough EIA evaluates potential environmental repercussions, from changes in hydrology to impacts on air quality and wildlife habitats. These assessments inform decisions and help shape mitigation strategies to minimize the environmental footprint. ## Managing the Environmental Footprint of Frac Sand Operations The environmental implications of **frac sand processing** are significant, and responsible operations must prioritize effective management strategies. At Sly, LLC, we understand these challenges and work to provide solutions that help facilities minimize their impact. ### Water Management and Tailings Disposal Water is an indispensable resource in frac sand processing, primarily for washing and classification. This leads to high water usage; one mine, for example, can demand up to [2 million gallons of water a day](https://news.nationalgeographic.com/news/energy/2013/07/130703-wisconsin-fracking-sand-rush/). Managing this water efficiently and responsibly is paramount. After the wet processing stages, the wastewater contains fine particles of clay, silt, and sand, collectively known as tailings. Traditionally, these tailings were directed to large settling ponds where solids slowly settled out, and the water evaporated or was discharged. While effective, settling ponds require significant land area and can pose environmental risks. Modern facilities increasingly employ advanced technologies to improve water management. Thickeners are widely used to concentrate the waste slurry. By adding flocculants, fine solids agglomerate and settle more quickly, allowing clean water to be recovered from the top. In fact, around 90% of process water can be recovered for reuse with a thickener, significantly reducing fresh water demand. For the concentrated solid waste from thickeners, filter presses are often used. These machines further dewater the slurry, producing a solid “filter cake” that is much easier to handle and dispose of, or even repurpose for mine reclamation, reducing the need for large, permanent settling ponds. ### Managing Dust in Frac Sand Processing Perhaps one of the most critical environmental and occupational health concerns in **frac sand processing** is the generation of crystalline silica dust. This fine dust, if inhaled, is a known carcinogen that can cause serious lung diseases such as silicosis. In one study, 79 percent of air samples at frac sand sites exceeded the exposure limit for silica dust, and a third were so high that most respirators wouldn’t be able to remove it from the air. The Occupational Safety and Health Administration (OSHA) provides extensive information on silica dust and its hazards. Fugitive dust emissions can occur at various points in the process: mining, crushing, screening, drying, and transferring sand. These emissions not only pose a health risk to workers but can also impact air quality in surrounding communities. This is where our expertise at Sly, LLC comes into play. We specialize in designing and manufacturing custom, high-quality industrial air pollution control systems. For frac sand operations, our solutions are vital. [Baghouse dust collectors](https://www.slyinc.com/products/dust-collectors/tubejet-baghouse-dust-collectors/) are highly effective at capturing fine particulate matter, including crystalline silica. These systems draw dust-laden air into the collector, trap particles on the fabric filters, and release clean air into the atmosphere. We also offer industrial wet scrubbers, which can be particularly effective in applications where dust is moist or sticky, or where specific gas contaminants are present. By implementing robust dust collection systems, facilities can significantly reduce health risks and comply with air quality regulations, ensuring a cleaner, safer operating environment. ### Innovations in Sustainable Processing The industry is continuously evolving, with a strong push towards more sustainable and efficient practices. One significant innovation is wet sand delivery. Traditionally, frac sand is dried completely before transport. However, wet sand processing, when combined with proximity wet sand mines, can reduce operational emissions in the last mile by an average of ninety percent. This approach eliminates the energy-intensive drying step before transport, reducing fuel consumption and associated greenhouse gas emissions. Proximity mining, locating mines closer to the oil and gas fields they serve, also contributes to sustainability. This reduces the distance sand needs to be transported, cutting down on fuel use, traffic, and transportation-related emissions. Finally, comprehensive land reclamation plans are an integral part of modern frac sand operations. These plans, often a prerequisite for permitting, outline how the land will be restored to its pre-mining condition or to a beneficial post-mining use. This includes backfilling excavated areas, contouring the land, replacing topsoil, and replanting native vegetation, ensuring the long-term ecological health of the site. ## Frequently Asked Questions about Frac Sand Production We often hear questions about the specifics of frac sand production. Here are some of the most common ones: ### How much sand is used in a single fracking well? The amount of sand used in a single fracking well is truly staggering. Each well can require as much as 10,000 tons, or millions of pounds, of sand in its lifetime. To give you an idea of the scale, industrial wells can demand hundreds of tons of sand daily. This massive consumption underscores why **frac sand processing** facilities operate around the clock to meet demand. ### What are the main health risks for workers at frac sand facilities? The primary health risk for workers at frac sand facilities is exposure to respirable crystalline silica dust. Inhaling this fine dust can lead to severe and irreversible lung diseases, including silicosis, and it is also classified as a known human carcinogen that can cause lung cancer. The numbers are sobering: in one study, 79 percent of air samples at frac sand sites exceeded the exposure limit for silica dust, and a third were so high that most respirators wouldn’t be able to remove them from the air. This highlights the critical need for effective dust control measures, such as industrial dust collectors and wet scrubbers, to protect worker health. ### Why is the Midwest a major source of frac sand? The Midwest, particularly the Great Lakes Region, has historically been a major source of frac sand due to its unique geological formations. This region is home to vast deposits of high-purity quartz sandstone with ideal characteristics for frac sand: excellent sphericity, roundness, and high crush strength. These natural qualities make the sand highly effective as a proppant in hydraulic fracturing. While other regions have developed in-basin sand sources, the Midwest’s geological endowment initially made it a dominant supplier, contributing approximately 70% of the silica sand used in America as a proppant in 2014. ## Conclusion The journey of frac sand, from raw earth to a critical component in energy extraction, is a testament to sophisticated industrial processing. We’ve explored how **frac sand processing** involves meticulous steps from mining and wet processing to drying, sizing, and rigorous quality control. The importance of quality and consistency cannot be overstated, as the performance of a multi-million-dollar well hinges on the integrity of these tiny sand grains. However, this vital industry also carries significant environmental responsibilities. Effective water management, innovative tailings disposal, and robust land reclamation plans are essential for sustainable operations. Above all, the critical role of air quality management, particularly in controlling crystalline silica dust, is a paramount concern for worker safety and community health. At Sly, LLC, we pride ourselves on delivering reliable, no-compromise solutions for the cleanest air possible. Our expertise in industrial dust collection, including advanced baghouses and wet scrubbers, helps frac sand facilities meet stringent air quality standards and protect their most valuable asset: their people. Ready to ensure your operations are as clean and efficient as possible? [Explore our dust control solutions for the Mining & Minerals industry](https://www.slyinc.com/industries/mining-minerals/) today. **Categories:** Dust Collection Equipment --- ### [Sustainable Solutions: Navigating the Environmental Benefits of Wet Scrubbers](https://www.slyinc.com/blog/sustainable-solutions-navigating-the-environmental-benefits-of-wet-scrubbers/) **Published:** September 9, 2025 **Author:** Shawn Altaffer **Content:** At Sly, we understand the growing need for cleaner air in manufacturing. One way we help industries achieve this goal is through wet scrubbers. These systems reduce air pollution by capturing harmful particulates and gases before they impact our environment and your workers’ health. ## **How Wet Scrubbers Work** A wet scrubber is an air pollution control device that cleans contaminated gas streams by bringing them into contact with a liquid—typically water or a chemical solution. As the bulk gas flows through the system, gaseous pollutants are absorbed, and particulates are trapped in liquid droplets. Chemicals in solution further neutralize gaseous pollutants that are too volatile to stay absorbed, as needed. The result? Cleaner air exits the system, releasing fewer contaminants into the atmosphere. Wet scrubbers are versatile. They handle particulate matter, acidic gases, and even sticky or gummy substances, making them suitable for many industries, including chemical processing, metalworking, and food production. Many models can be customized to specific needs while maintaining low energy consumption. ## **Eco-Friendly Benefits of Wet Scrubbers** One of the main advantages of wet scrubbers is their ability to promote cleaner air. By efficiently capturing harmful substances such as sulfur dioxide (SO₂), ammonia (NH₃), and fine particulate matter, these systems reduce industrial emissions, directly improving air quality for communities worldwide. This helps industries comply with increasingly strict environmental regulations while supporting broader sustainability efforts. Another significant benefit is flexibility in handling waste materials. Wet scrubbers remove pollutants while also preparing them for safe disposal or recycling. For example, systems like our [Venturi Wet Scrubber](https://www.slyinc.com/products/industrial-wet-scrubbers/venturi-wet-scrubber/) reclaim valuable materials from process gas streams, reducing waste and creating opportunities for reuse within production cycles. Many designs, like those used in our [Packed Tower Scrubbers](https://www.slyinc.com/products/industrial-wet-scrubbers/packed-tower-wet-scrubber/), require minimal water consumption. Recirculation systems allow facilities to get the most out of scrubbing solutions, making these units more resource-efficient over time. ## **Tackling Challenges with Innovative Designs** As industrial processes evolve, so does the need for reliable air pollution control strategies. Wet scrubbers have risen to meet these challenges with designs that balance efficiency and environmental impact. For example, our [Impinjet® Scrubbers](https://www.slyinc.com/products/industrial-wet-scrubbers/impinjet-wet-scrubber/) operate with minimal pressure drop and require less scrubbing fluid by increasing the liquid-gas interaction of a typical tray scrubber to effectively trap contaminants. These features reduce energy and water usage without compromising performance. For industries managing highly corrosive gases, solutions like our [Fiberglass-Reinforced Plastic (FRP) Wet Scrubbers](https://www.slyinc.com/products/industrial-wet-scrubbers/frp-wet-scrubbers/) provide an added layer of durability while maintaining eco-friendliness. Their lightweight yet corrosion-resistant construction ensures long-term reliability in harsh conditions, all while keeping emissions under control. ## **Sustainability Beyond Pollution Control** [Wet scrubbers](https://www.slyinc.com/products/wet-scrubbers/) do more than clean gases—they support broader sustainability goals by fostering safer workplaces and preventing widespread environmental damage caused by airborne pollutants. Cleaner gases mean reduced respiratory risks for workers and nearby populations while protecting ecosystems from harmful substances like ammonia or volatile organic compounds (VOCs). However, they aren’t without their limitations. Maintenance costs and wastewater management should be considered when considering sustainability efforts. Understanding the advantages and disadvantages is vital when deciding if a wet scrubber is the right tool for your facility’s needs. We’re here to help guide you through that process. ## **Moving Forward Together** At Sly, we’re committed to helping industries adopt greener practices through innovative air quality solutions like wet scrubbers. By reducing emissions, conserving resources, and reclaiming waste materials, these systems contribute to a cleaner environment while promoting operational efficiency. Ready to take the next step in advancing your sustainability goals? [Request a quote](https://www.slyinc.com/contact/request-a-quote/) today, and let us help you find the right solution for your facility. Together, we can improve industry standards and safeguard the planet’s future—one clean breath at a time. **Categories:** Wet Scrubber --- ### [Blast Away Dust: Understanding Pulse Jet Filter Cleaning](https://www.slyinc.com/blog/pulse-jet-filter-cleaning/) **Published:** December 17, 2025 **Author:** Al Moretti **Excerpt:** Optimize your dust collector! Understand pulse jet filter cleaning, how it works, and troubleshoot for peak efficiency. **Content:** ## Why Pulse Jet Filter Cleaning Matters for Industrial Air Quality **Pulse jet filter cleaning** is a method that uses short bursts of compressed air to remove accumulated dust from baghouse filters without stopping your production line. Here’s how it works: 1. **Dust builds up** on filter surfaces as clean air passes through media 2. **Compressed air pulses** (80-100 PSI) blast through the filters in reverse 3. **The shockwave flexes** the filter media, breaking the dust cake loose 4. **Dust falls** into collection hoppers below for disposal 5. **Clean filters** resume normal operation immediately If you manage an industrial facility, you know that dust isn’t just a nuisance—it’s a compliance issue, an efficiency problem, and a safety hazard. Your baghouse dust collector works around the clock to capture particulate matter, but those filters can’t stay clean on their own. **Dirty filters mean higher energy costs, reduced airflow, and potential equipment failure.** That’s where pulse jet technology comes in. This automated cleaning system keeps your filters operating at peak performance without shutting down your operation. The beauty of pulse jet cleaning is its simplicity: compressed air does the heavy lifting while your system keeps running. No manual filter shaking, no production downtime, no workers exposed to hazardous dust. Whether you’re running a timer-based schedule or an on-demand system that responds to actual pressure readings, understanding this process helps you optimize performance and extend filter life. ![Detailed infographic showing the pulse jet filter cleaning cycle: Stage 1 shows dirty air entering the baghouse and dust accumulating on filter bags; Stage 2 shows compressed air pulse traveling down through blowpipe and venturi; Stage 3 shows filter bag flexing outward from the shockwave; Stage 4 shows dust cake breaking loose and falling into hopper; Stage 5 shows clean filter ready for filtration again with arrows indicating continuous cycle - pulse jet filter cleaning infographic ](https://images.bannerbear.com/direct/4mGpW3zwpg0ZK0AxQw/requests/000/118/212/245/9e2VGL0qn6VapydEzEAv5mxr1/70a5cd4bc199c28fd281b1a255fc267020a6bd48.jpg "Detailed infographic showing the pulse jet filter cleaning cycle: Stage 1 shows dirty air entering the baghouse and dust accumulating on filter bags; Stage 2 shows compressed air pulse traveling down through blowpipe and venturi; Stage 3 shows filter bag flexing outward from the shockwave; Stage 4 shows dust cake breaking loose and falling into hopper; Stage 5 shows clean filter ready for filtration again with arrows indicating continuous cycle - pulse jet filter cleaning infographic ") ## How a Pulse Jet Dust Collector Works At Sly, LLC, we’ve been pioneering industrial air pollution control since 1902, and we know a thing or two about keeping industrial air clean. Our baghouses are at the heart of many operations across the world, and the **pulse jet filter cleaning** mechanism is what keeps them running smoothly. Imagine your facility generates fine particulate matter—sawdust from a woodworking shop, cement dust from a manufacturing plant, or fine powders from a chemical process. This airborne dust is drawn into your pulse jet dust collector, which is essentially a large, specialized air filter. The dirty air enters a chamber called the **dirty air plenum**. From there, it’s forced through a series of fabric filter bags or cartridges. As the air passes through the filter media, the dust particles are trapped on the outside surface of the bags, while the now-clean air passes through to the **clean air plenum** and is exhausted back into the atmosphere or recirculated within the plant. Over time, this trapped dust forms a layer, often called a **dust cake**, on the filter surface. This dust cake is actually beneficial up to a point, as it aids in further filtration, capturing even finer particles. However, if it gets too thick, it starts to restrict airflow, causing a rise in **differential pressure** across the filters. This is where our hero, the pulse jet system, steps in. The collected dust eventually falls into a **hopper** at the bottom of the collector, ready for periodic removal and disposal. ### The Filtration Stage The primary goal of any dust collector is to separate dust from air. In a pulse jet system, this happens during the filtration stage. As dirty air enters the collector, its velocity often decreases, allowing heavier particles to fall directly into the hopper. The remaining lighter particles are then carried upwards towards the filter elements. As the air flows through the filter media—whether it’s a woven fabric bag or a pleated cartridge—the dust particles are captured. The filter’s porosity and the fiber structure determine its efficiency. Initially, the clean filter allows air to pass through relatively easily. As dust accumulates, a permeable layer forms, which actually improves filtration efficiency by acting as an additional filter layer. This is the “dust cake” we mentioned. However, this growing dust cake also increases the resistance to airflow. Think of it like trying to breathe through a progressively thicker cloth. The system’s fans have to work harder, consuming more energy, and the overall airflow through your facility’s processes can decrease, impacting production efficiency. This is why effective **pulse jet filter cleaning** is so critical. ### The Role of Key Components To understand how the cleaning works, let’s look at the key players within the pulse jet system: - **Tube Sheet:** This is a perforated metal plate that separates the dirty air plenum from the clean air plenum. The filter bags or cartridges are mounted into the holes in the tube sheet, creating a seal that ensures all dirty air passes *through* the filters, not around them. - **Venturis:** These are conical-shaped nozzles located at the top of each filter bag, extending slightly into the bag. When the compressed air pulse fires, the venturi helps to accelerate the air and distribute the shockwave evenly down the length of the filter bag. This maximizes the cleaning effect. - **Blowpipes (or Manifolds):** These are horizontal pipes positioned above the rows of filter bags. Each blowpipe has a series of nozzles directly above the venturis. They deliver the high-pressure compressed air pulses to specific rows of filters. - **Filter Cages:** For filter bags, these internal wire cages provide structural support, preventing the bags from collapsing under the differential pressure during filtration and ensuring they flex outward properly during cleaning. Cartridge filters are typically self-supporting. - **Solenoid and Diaphragm Valves:** These are the brains and brawn of the cleaning cycle. The **solenoid valve** is an electrically actuated valve that, when energized by the system’s controller, opens to release a small burst of air. This pilot air then actuates the much larger **diaphragm valve**, which rapidly opens to release the high-pressure compressed air from the blowpipe into the filter elements. It’s a rapid, powerful sequence. ## The Step-by-Step Pulse Jet Filter Cleaning Process Now that we know the components, let’s dive into the action! The **pulse jet filter cleaning** process is a marvel of automated efficiency. It uses short, powerful blasts of compressed air to maintain optimal filtration, often without interrupting the dust collection process. This means your operations can keep running smoothly, minimizing downtime. The core idea is to create a momentary, intense shockwave that travels down the inside of the filter bag or cartridge. This shockwave causes the filter media to flex and expand rapidly, breaking the accumulated dust cake off the surface. Gravity then does the rest, pulling the dislodged dust down into the hopper below. There are primarily two ways to initiate this cleaning: **on-demand cleaning** (triggered by the system’s performance) or **timer-based cleaning** (triggered at set intervals). We’ll explore the benefits of each later, but both rely on the same fundamental steps. ### Step 1: Monitoring Dust Accumulation The cleaning process doesn’t just happen randomly; it’s a response to the system’s needs. The most common way we monitor this need is through a **differential pressure gauge** or transmitter. This device measures the pressure difference between the dirty air plenum (before the filters) and the clean air plenum (after the filters). As dust accumulates on the filters, this pressure difference increases. The system’s controller is programmed with **setpoints**—a low setpoint (indicating clean filters) and a high setpoint (indicating filters are getting dirty and need cleaning). Maintaining an **optimal dust cake thickness** is crucial. Too thin, and you’re over-cleaning, wasting compressed air and potentially reducing filter life. Too thick, and you’re experiencing excessive **airflow restriction**, high energy consumption, and reduced system efficiency. The controller constantly reads the differential pressure, acting as the watchful eye of your dust collector. ### Step 2: Triggering the Cleaning Cycle Once the differential pressure reaches the high setpoint, or if a pre-set time interval has passed, the cleaning cycle is triggered. - **On-Demand Controller:** In this sophisticated setup, the controller directly monitors the differential pressure. When the pressure reaches the programmed high limit, it signals the cleaning system to begin. This ensures cleaning only happens when necessary, optimizing compressed air usage and filter lifespan. - **Timer Board:** For simpler systems, a timer board initiates the cleaning cycle at regular, pre-programmed intervals, regardless of the actual dust load. While less efficient, it’s a reliable method for many applications. Regardless of the trigger, the next action is the activation of the **solenoid valve**. The controller sends an electrical signal, causing the solenoid to open for a fraction of a second. This releases a small burst of pilot air. This pilot air then travels to the **diaphragm valve**, which is a much larger valve designed to handle the high volume of compressed air needed for the pulse. The pilot air pressure causes the diaphragm valve to snap open, allowing a powerful burst of compressed air to flow from the air header tank, through the blowpipe, and into the venturis above a row of filters. ### Step 3: Dislodging the Dust Cake This is the dramatic part of the **pulse jet filter cleaning** process! As the diaphragm valve opens, a sudden, high-pressure blast of compressed air—typically between 80-100 PSI (pounds per square inch)—rushes down the blowpipe. This air is directed into the venturis at the top of the filter bags or cartridges. The **venturi effect** helps to accelerate this air, creating a powerful shockwave that travels rapidly down the inside of the filter element. This shockwave causes the filter media to momentarily flex and expand outwards. This rapid flexing action effectively breaks the bond between the accumulated dust cake and the filter surface. Once dislodged, **gravity** takes over. The dust cake, now detached, falls from the filters into the **dust collection hopper** at the bottom of the baghouse. From there, it’s typically discharged via a rotary airlock or screw conveyor for disposal. The entire pulse lasts only a fraction of a second, and it’s usually sequenced so that only a small section or row of filters is cleaned at a time, allowing the rest of the collector to continue filtering dirty air without interruption. This ensures continuous operation and minimal impact on your facility’s air quality. ## Optimizing Your System for Peak Performance A well-maintained **pulse jet filter cleaning** system isn’t just about compliance; it’s about efficiency and longevity. Optimizing your system means saving money on **energy consumption**, extending **filter lifespan**, ensuring **compressed air quality**, and adhering to smart **maintenance schedules**. At Sly, LLC, we understand that reliability and no-compromise solutions are key to the cleanest air possible. When your pulse jet system is optimized, it operates like a finely tuned instrument. Filters last longer, energy bills are lower, and you face fewer unexpected shutdowns. It’s a win-win for your bottom line and your environmental footprint. | Cleaning Method | Initial Cost | Energy Consumption | Filter Life | System Stability | |---|---|---|---|---| | **On-Demand** | Higher | Lower | Longer | More Stable | | **Timer-Based** | Lower | Higher | Shorter | Less Stable | ### Fine-Tuning Pulse Pressure and Duration Getting the pulse just right is a delicate balance. - **Over-cleaning risks:** If the compressed air pulse is too strong or too frequent, it can lead to **over-cleaning**. This means you’re wasting valuable compressed air, which is an expensive utility. Even worse, excessive flexing of the filter media can accelerate wear and tear, leading to premature filter failure. This results in higher replacement costs and increased maintenance downtime. It’s like scrubbing a dish too hard; you might get it clean, but you’ll scratch it in the process. - **Under-cleaning consequences:** On the flip side, if the pulse is too weak or too infrequent, you’ll experience **under-cleaning**. The dust cake won’t be adequately dislodged, leading to an ever-thickening layer of dust on the filters. This causes a persistently high differential pressure, increased fan energy consumption, reduced airflow, and eventually, “blinding” of the filters, where they become so clogged they can no longer filter effectively. The key is to follow **manufacturer specifications** for your specific filter media and dust type. Our experts at Sly, LLC can help you determine the ideal **pulse duration adjustment** and pressure for your unique application. Generally, a short, sharp pulse is more effective than a long, drawn-out one. Most systems operate with pulse durations measured in milliseconds. ### The Benefits of On-Demand Cleaning While timer-based cleaning has its place, we highly recommend **on-demand cleaning** whenever possible. It’s a smarter, more efficient approach that pays dividends. - **Energy Savings:** The most significant benefit is reduced compressed air consumption. An on-demand system only cleans when necessary, reacting to the actual dust load and differential pressure. This can lead to substantial **energy savings** over time, as compressed air generation is one of the most energy-intensive processes in many industrial facilities. - **Reduced Mechanical Stress:** By avoiding unnecessary cleaning cycles, on-demand systems minimize the mechanical stress on your filter media, blowpipes, and valves. This directly translates to **extended filter life**, meaning fewer filter replacements and less labor associated with change-outs. - **Extended Filter Life:** Because filters are not subjected to constant, unwarranted flexing, they simply last longer. This reduces your operational costs and environmental impact. - **Stable System Pressure:** On-demand cleaning helps maintain a more consistent differential pressure across the filters, leading to more **stable system pressure** and airflow throughout your dust collection system. This contributes to more consistent process performance in your facility. For more insights into keeping your dust collector running optimally, explore resources on [dust collector maintenance best practices](https://www.plantengineering.com/articles/dust-collector-maintenance-best-practices/). ### Best Practices for an Effective Pulse Jet Filter Cleaning To ensure your **pulse jet filter cleaning** system performs at its peak, consider these best practices: - **Clean, Dry Compressed Air:** This is non-negotiable. Moisture and oil in your compressed air supply can severely damage diaphragm valves, corrode internal components, and cause dust to “mud up” on filter surfaces, leading to blinding. Invest in high-quality air dryers and filters for your compressed air system. - **Regular Valve Inspection:** Your solenoid and diaphragm valves are critical. Regularly inspect them for signs of wear, leaks, or sluggish operation. A failing valve can lead to ineffective cleaning of entire rows of filters. - **Leak Detection:** Even small leaks in your baghouse can compromise efficiency and lead to dust emissions. Regular visual inspections and the use of **fluorescent leak detection powder** (which glows under UV light) can help identify torn bags, faulty seals, or pinholes. - **Controller Calibration:** Ensure your differential pressure gauge and controller are regularly calibrated. An inaccurate reading can lead to either over-cleaning or under-cleaning, both of which are detrimental to system performance and filter life. ## Common Problems and Troubleshooting Even the most robust **pulse jet filter cleaning** systems can encounter issues. Recognizing the symptoms and knowing how to troubleshoot them can save you time, money, and headaches. Problems often manifest as **visible emissions** from the stack, a persistently **high pressure drop** across the filters, **reduced airflow** at pickup points, or simply **ineffective cleaning**. Addressing these issues promptly is not just about efficiency; it’s also about maintaining compliance and ensuring worker safety, especially when dealing with combustible dust. [OSHA provides valuable guidance on combustible dust control](https://www.osha.gov/combustible-dust). ### Problem: High Differential Pressure A consistently high differential pressure reading is a clear indicator that something is amiss with your **pulse jet filter cleaning**. It means air isn’t flowing easily through your filters, and the fan is working harder than it should. - **Blinded Filters:** This is the most common culprit. Filters become “blinded” when the dust cake adheres too strongly or becomes saturated with moisture or oil, making it impermeable. This can be caused by improper cleaning parameters (too weak a pulse), incorrect filter media for the application, or contaminants in the compressed air. - **Moisture in the System:** If your compressed air isn’t dry, moisture can enter the baghouse. When this combines with dust, it creates a sticky, mud-like substance that can permanently blind filters. This is especially problematic in humid environments. - **Incorrect Pulse Pressure:** If the pulse pressure is too low, it won’t effectively dislodge the dust cake. Check your compressed air supply pressure and ensure your diaphragm valves are opening fully. - **Hopper Bridging:** Sometimes, the dust collected in the hopper can “bridge” or arch over the discharge opening, preventing it from exiting. This can cause dust to back up into the filter area, leading to high differential pressure and re-entrainment of dust onto freshly cleaned filters. ### Troubleshooting Your Pulse Jet Filter Cleaning System for Leaks Leaks in a baghouse are a serious concern, leading to dust emissions, reduced efficiency, and potential regulatory fines. - **Torn or Damaged Filters:** The most common source of leaks. Filters can tear due to abrasion from dust, improper installation, chemical attack, or excessive mechanical stress from over-cleaning. - **Improper Filter Installation:** If filters aren’t seated correctly in the tubesheet, or if their clamps/gaskets aren’t sealed properly, dirty air can bypass the filter media altogether. - **Leaky Welds or Seals:** Over time, structural welds or gasketed access doors can develop leaks, allowing dust to escape. - **Fluorescent Leak Detection Powder:** This is an invaluable tool. Introduce the powder into the dirty air stream. The powder will collect on the outside of the filters. After a short run time, shut down the collector and inspect the clean air plenum with a UV light. Any glowing areas indicate a leak, pinpointing exactly where a filter is torn or a seal is compromised. ### Problem: Weak or No Pulse If your filters aren’t getting cleaned, the problem might lie with the pulsing mechanism itself. - **Low Compressed Air Supply:** This is often overlooked. Ensure your plant’s compressed air system can consistently deliver the required pressure and volume to the baghouse. Check for blockages or leaks in the air lines leading to the collector. - **Diaphragm Valve Failure:** The diaphragm valve is a wear item. Over time, the rubber diaphragm can stiffen, tear, or become clogged, preventing it from opening fully or at all. Inspect these valves regularly. - **Solenoid Malfunction:** The small solenoid valve acts as the pilot for the diaphragm valve. If it fails (e.g., electrical coil burnout, clogged orifice), the diaphragm valve won’t receive the signal to open. - **Frozen Air Lines:** In colder climates, moisture in compressed air lines can freeze, blocking the flow to solenoid or diaphragm valves. This underscores the importance of dry compressed air. ## Frequently Asked Questions about Pulse Jet Filter Cleaning We often hear similar questions from our clients about their **pulse jet filter cleaning** systems. Here are some of the most common ones, along with our expert answers. ### How often should pulse jet filters be cleaned? The ideal cleaning frequency isn’t a one-size-fits-all answer; it depends on several factors: - **Dust Loading:** Facilities with high dust concentrations will naturally require more frequent cleaning than those with lighter dust loads. - **Type of Dust:** Some dusts are stickier or more abrasive than others, influencing how quickly they build up and how easily they’re dislodged. - **Filter Media:** Different filter fabrics or cartridge materials have varying dust release characteristics. - **Desired Differential Pressure:** The cleaning frequency should be set to maintain the differential pressure within the manufacturer’s recommended operating range. For optimal performance, we generally recommend using an **on-demand cleaning system** that triggers cleaning based on differential pressure. This ensures filters are cleaned only when necessary, saving compressed air and extending filter life. If using a timer-based system, start with the manufacturer’s recommendation and adjust based on observed differential pressure and filter condition. ### What is the ideal compressed air pressure for a pulse jet system? Most **pulse jet filter cleaning** systems operate with a compressed air pressure between **80 and 100 PSI (pounds per square inch)** at the header tank. However, the *exact* ideal pressure can vary based on: - **Baghouse Design:** Different manufacturers and designs may have specific requirements. - **Filter Length:** Taller filters often require slightly higher pressures to ensure the shockwave travels effectively down the entire length of the bag. - **Dust Characteristics:** Very dense or sticky dusts might benefit from a slightly higher pressure, while lighter, easily dislodged dusts might perform well at lower pressures. It’s crucial to consult your baghouse’s operation and maintenance manual for the manufacturer’s recommended pressure range. Operating significantly below this range will result in ineffective cleaning, while operating too high can lead to over-cleaning and premature filter wear. Always ensure your compressed air supply is clean, dry, and free of oil. ### Can you clean pulse jet filters while the dust collector is online? Yes, absolutely! This is one of the primary advantages and defining features of **pulse jet filter cleaning** technology. Unlike older shaker-style or reverse-air collectors that often require the dust collector to be taken offline (or a compartment isolated) for cleaning, pulse jet systems are designed for **continuous, online cleaning**. The cleaning pulses are very short (milliseconds) and are typically sequenced across rows or small groups of filters. This means that while a small section of filters is being cleaned, the vast majority of the filters remain actively engaged in the filtration process. This enables uninterrupted production, a major benefit for industrial facilities seeking to maximize uptime and efficiency. This capability is a cornerstone of the reliable, no-compromise solutions we provide at Sly, LLC. ## Conclusion Understanding **pulse jet filter cleaning** is not just about knowing how a machine works; it’s about mastering a critical component of your facility’s operational efficiency, air quality, and regulatory compliance. We’ve walked through the intricate dance of dirty air, dust cake formation, and the powerful, precise bursts of compressed air that keep your filters clean and your systems running. From the initial filtration stage to the fine-tuning of pulse pressure, every element plays a vital role in ensuring optimal performance. We’ve seen how on-demand cleaning can lead to significant **energy savings** and **extended filter life**, and how vigilant troubleshooting can prevent minor hiccups from becoming major headaches. At Sly, LLC, with our roots stretching back to 1902, we pride ourselves on delivering solutions that ensure the cleanest air possible. Our expertise in designing and manufacturing high-quality industrial air pollution control systems, including advanced baghouses, enables us to understand the nuances of effective dust management. By implementing the best practices we’ve discussed, you’re not just cleaning filters; you’re investing in the longevity of your equipment, the health of your workforce, and the sustainability of your operations. Ready to optimize your air quality control? [Explore our high-efficiency baghouse dust collectors](https://www.slyinc.com/products/dust-collectors) and find out how our no-compromise solutions can benefit your facility. **Categories:** Bag Filter Cleaning **Tags:** OSHA Compliance --- ### [When a Cartridge Collector Just Won’t Do, Air Pollution Control Contractors Need a Baghouse Solution](https://www.slyinc.com/blog/when-a-cartridge-collector-just-wont-do-air-pollution-control-contractors-need-a-baghouse-solution/) **Published:** November 30, 2017 **Author:** Al Moretti **Content:** ![Baghouse.jpg](https://www.slyinc.com/wp-content/uploads/2024/08/Baghouse-4.jpg) For many dust collection system installers and air pollution control (APC) contractors, cartridge collectors represent the “bread and butter” of their business. However, the main limitation of these collectors is they are only designed to handle lighter dust loads, like those associated with light manufacturing, including typical metal cutting and welding, mixing and screening of powders, in addition to woodworking operations, painting, and general room ventilation. When used on more “aggressive” collection applications and/or where the dust load is heavy, providing a cartridge collector might result in more frequent (and expensive) filter changes and unscheduled maintenance shutdowns. Further, pleated cartridge elements aren’t suitable for sticky dusts, dusts that clump easily, or where the gas stream is very humid. Generally, cartridge filters are used as point collection devices for individual manufacturing processes, but they are sometimes used for capturing dust from multiple processes throughout a facility. In cases like these, clogged filters could literally shut down an entire production line. In contrast, a baghouse is much more forgiving of higher dust loads and needs less frequent filter replacements, so it can offer your customer a more cost-effective approach to dust collection. ## Baghouse Applications Baghouses are an appropriate solution for a wide variety of manufacturing processes, including chemical processing, rubber compounding, minerals processing, plastics/resins processing and recycling. They are also used for bin venting applications; filter receivers, general ventilation of areas with heavy dust loads, exhaust from processes including thermal processing equipment such as dryers, calciners, kilns, furnaces, and oxidizers; and exhaust from size reduction processing equipment such as crushers, mills, and classifiers; along with many other applications. ## When to Recommend a Baghouse How can you know when a baghouse offers a better solution than a cartridge collector system for your customer’s application? Here are some clear indicators: - **The application involves heavy dust loads.** Loads greater than 5 grains per dry standard cubic foot (gr/DSCF) would be considered heavy. These types of loads are typically found in facilities for minerals and chemicals processing, foundries, etc. If a cartridge collector is used in these types of applications, typically a pre-cleaner such as a cyclone is added to reduce the dust load to the dust collector. This adds capital costs, increased energy consumption due to a higher pressure drop in the system, a second point from which to collect solids, and more maintenance requirements. - **Higher temperatures are involved.** For dust streams at temperatures higher than 275°F (~135°C) a baghouse is generally more cost effective. - **Operating static pressure is higher than 30 inches water gauge (w.g.).** - **Corrosive gases are present.** Any gas with acidic constituents would be considered corrosive. - **Highly explosive or combustible dusts are present.** Many common food products such as grain, flour, starch, sugar, powdered milk, cocoa, coffee, and pollen pose an explosive risk if dispersed into a dust cloud. Powdered metals have higher explosive properties, like aluminum, magnesium, and titanium. A higher strength baghouse vessel is generally indicated for higher Kst (ST-3) dusts. For more information on explosive/combustible dusts, refer to the [OSHA® Fact Sheet: Hazard Alert: Combustible Dust Explosions](https://www.osha.gov/OshDoc/data_General_Facts/OSHAcombustibledust.pdf). - **Dust collection in heavy industries that run 24/7operation require caution, and a properly designed baghouse requires less maintenance.** - **A customized dust collection solution is required.** Most cartridge collectors are available in standard models only. Attempting to get a customized solution from a cartridge collector manufacturer is likely to be an expensive proposition. In contrast, baghouses can be readily customized for specific situations, such as height or plan area restrictions at the installation site. Baghouses also offer a wider range of options for construction materials, making it simpler to adapt to the temperature and chemistry requirements of a specific application. Although many cartridge collectors are only compatible with the original manufacturer’s expensive brand of filters, replacement baghouse bags are widely commercially available. ## Cashing in on Baghouse Sales Opportunities How can you take advantage of the baghouse sales opportunities you encounter? Here are some ways to get started: - Educate yourself about baghouse technology and how it has evolved over the last few decades. Sly’s free [Baghouse 101 training videos](https://info.slyinc.com/baghouse-101-training-signup) are a great place to get started. To see how far we’ve come, check out our support for [legacy systems](https://www.slyinc.com/products/dust-collectors/legacy-dust-collectors/) that are still in service. - Look for suppliers who can offer your installation customers the flexibility of custom systems that are tailored to their specific applications and dust collection conditions. - Learn the questions you have to ask the customer in order to build an RFQ for a baghouse system. These include questions about air flow, dust types, dust loading, particle size, bulk density of the dust, installation constraints, location (indoors or outdoors), geometry restrictions, etc. ## Conclusion Baghouses represent a significant potential source of new business for your service. Taking the time necessary to understand what they can offer your customers will pay big dividends. Sly can help you with any questions. [Contact us](https://www.slyinc.com/contact/) or check out our [Baghouse 101 video training series](https://info.slyinc.com/baghouse-101-training-signup) to help you make sure you’re giving your customers the best solution. [Contact Us](https://www.slyinc.com/contact/) [Baghouse](https://www.slyinc.com/blog/category/baghouse/) **Categories:** Baghouse --- ### [Cleaning Up with Cartridge Filters: Dust Collector Filter Cleaning](https://www.slyinc.com/blog/cleaning-up-with-cartridge-filters-dust-collector-filter-cleaning/) **Published:** May 8, 2019 **Author:** Al Moretti **Content:** For indoor dry dust collector installations, cartridge dust collectors are often the best option for applications where the dust is dry and can flow freely, such as in chemical processing, minerals, blasting, welding, plasma cutting, dry powder handling, and metal finishing. But [cartridge filters](https://www.slyinc.com/products/replacement-parts/cartridge-filters/), just like baghouse filters, demand regular maintenance to provide continuing filtration efficiency. ![img-cartridge](https://www.slyinc.com/wp-content/uploads/2024/08/img-cartridge-2.png)In early dust collection systems, filters inside a collector gradually built up a layer of dust; over time, the pressure drop across the filter media rose until the resistance to airflow through the system reached an unacceptable level. The dirty filters had to be removed and replaced with clean filters to return the system to a lower pressure drop condition. Today, discarding and replacing filter cartridges when they get dirty rather than cleaning them is the exception rather than the rule. In those exceptional cases, the filter cartridges are typically made of inexpensive cellulose fibers and intended for lighter-duty applications like filtering light fumes or small amounts of airborne dust, such as in paint booths, plasma-welding booths or shop-venting applications. Cartridge filters can be manufactured with a variety of [filter media](https://www.slyinc.com/products/fabric-filter-media-options/), including cellulose, cellulose/polyester blends, flame retardant cellulose or cellulose/polyester, carbon impregnated, spun-bonded hydrophobic or oleophobic fibers, or filters with polytetrafluoroethylene (PTFE) (Teflon) surface treatments. Sly offers both horizontal and vertical cartridge dust collection systems, each equipped with its own built-in cartridge cleaning system designed to minimize the consumption of compressed air. ## Vertical Collector Cartridge Cleaning PleatJet vertical dust collectors are designed for on-demand pulsed filter cleaning. Their downflow design and built-in classifier used in vertical collectors separates out heavier dust particles, reducing dust loading. Their cellular construction allows for automatic on-line pulse cleaning without dust becoming re-entrained in the filter. A cleaning cycle reverses the usual direction of airflow within a cartridge. Instead of dirty air flowing through the filter, leaving dust behind on the outside, a blow pipe inside the filter sends a 100-millisecond pulse of compressed air down the center of each cartridge, which releases the dust cake clinging to the outside of the cartridge. ## Horizontal Collector Cartridge Cleaning PleatJet II™ PLUS horizontal cartridge collectors use the Opti-Pulse cartridge cleaning system, which is designed to provide even distribution of the cleaning air pressure in the cartridge to enhance cleaning effectiveness. In a standard venturi cleaning system for baghouse filters, the cleaning air enters the filter at a high velocity with entrained secondary air. This jet pulse travels to the end of the bag and rebounds up the filter, flexing the material and dislodging the dust cake. In contrast, cartridge filters are much shorter than baghouse filters and their rigid design doesn’t allow them to flex. Instead, a 100-millisecond pulse of compressed air is used to dislodge the dust on the filter. A specially designed cone in the Opti-Pulse system reduces the velocity of the cleaning air, converting this energy to a more uniformly distributed cleaning pressure. Uniform cleaning ensures that the greatest possible filter surface area is available for dust collection. Cleaning the cartridges only when necessary and not continuously translates into energy savings (by reducing the consumption of compressed air) and extended cartridge life. The Opti-Pulse cleaning system uses a MP-494 timer with a “clean-on-demand” module to trigger cleaning cycles automatically, based on the pressure loss across the dust collector. Let’s consider setting up the system to trigger a cleaning cycle at 4-1/2 inches of differential pressure, then to stop cleaning when the pressure is reduced by a half-inch water column. Over a cartridge’s first year of use, it might be necessary to clean the filers only once every few hours to maintain this desired level of differential pressure. However, by the end of the cartridge’s second year of use, although it might still be possible to maintain 4-1/2 inches of pressure while cleaning on demand, it might require pulse the cartridges with cleaning energy three times as often. This clean-on-demand practice minimizes the number of cleaning cycles the filter cartridge will undergo, reducing mechanical wear on the filter media. It also makes it easy for maintenance personnel to track the number of cleaning cycles being performed, and helps them determine when a filter is nearing the end of its useful life. ## Common Cartridge Cleaning Mistakes Although pulse clean-on-demand systems take most of the guesswork out of cartridge cleaning, mistakes can happen. Here are some of the most common ones we’ve encountered: - Using a cartridge with inadequate filtration area for the type and amount of dust involved. Applications in which a high level of dust loading is anticipated can overload the filter media, filling the filter pleats with dust that is difficult for the cleaning system to dislodge. - Extending the pulse duration in an attempt to control differential pressure across the unit. Changing the length of the cleaning pulse from 100 milliseconds to 500 milliseconds won’t deliver any more cleaning energy to a filter cartridge. It can only consume more compressed air (and more energy) and increase the amount of recovery time needed before the next cleaning cycle. Instead of delivering longer pulses, reduce the time between cleaning cycles. - Neglecting to check the integrity of the dust collector’s seals or gaskets. Old, cracked seals and can allow cool, moist ambient air to leak into the collector, where it can mix with the warmer air in the gas stream and create condensation. That condensation can cause the collected dust to become more agglomerative, less permeable and more difficult to dislodge during a cleaning cycle. - Failing to anticipate the dust being collected could carry a high static charge. Dust with a high static charge will remain stuck in a filter’s pleats far longer than it will in a more traditional round filter. Choose static-dissipating filter media and grounded filters to combat this problem. To learn more about how to maximize the filtration efficiency of your cartridge dust collector system and dust collector filter cleaning process, contact the [Sly sales representative nearest you](https://www.slyinc.com/rep-locator/). [Contact Us](https://www.slyinc.com/contact/) [Cartridge Filters](https://www.slyinc.com/blog/category/cartridge-filters/), [Filter cleaning](https://www.slyinc.com/blog/category/filter-cleaning/) **Categories:** Cartridge Filters, Filter cleaning --- ### [From Filters to Fire Safety: Key Parts of a Baghouse Dust Collector](https://www.slyinc.com/blog/baghouse-dust-collector-filters-ultimate-guide/) **Published:** December 11, 2025 **Author:** Al Moretti **Excerpt:** Optimize your baghouse dust collector filters for efficiency, safety, and compliance. Learn types, maintenance, and fire safety. **Content:** ## Why Baghouse Dust Collector Filters Matter for Your Facility **Baghouse dust collector filters** are the primary components that capture and remove dust and particulate matter from industrial air streams. These fabric filter bags—made from materials like polyester, aramid, or PTFE—trap dust on their surface while allowing clean air to pass through, achieving collection efficiencies greater than 99 percent. **Key components of a baghouse dust collection system include:** - **Filter bags** – Fabric tubes that capture dust particles - **Filter cages** – Wire support structures that hold bags in shape - **Cleaning system** – Pulse-jet, reverse-air, or shaker mechanisms that remove accumulated dust - **Housing** – Metal enclosure containing all components - **Hopper** – Collection chamber for removed dust - **Fan/blower** – Creates airflow through the system - **Valves** – Control compressed air for cleaning cycles If you’re managing a facility with challenging dust environments, understanding these components helps you maintain clean air, stay compliant with EPA regulations, and avoid costly downtime. The wrong filter material can lead to premature failure, excessive emissions, and damaged equipment. The right selection based on temperature, dust properties, and chemical resistance extends filter life two to three times longer than standard options. Most baghouse systems work through a simple cycle: dirty air enters the housing, passes through fabric filter bags where dust accumulates on the surface, and clean air exits through the outlet. A cleaning system periodically removes the dust cake, allowing the filters to continue operating efficiently. ![Infographic showing the workflow of a baghouse dust collector system from dirty air intake through filter bags capturing dust particles, dust falling into collection hopper, and clean air exhausting from outlet, with labels for housing, filter bags, cleaning system, hopper, and fan - baghouse dust collector filters infographic ](https://images.bannerbear.com/direct/4mGpW3zwpg0ZK0AxQw/requests/000/115/311/326/VA54EW2ZqQr41O3ozegGPNXJl/5fe2c05b131df8df045649adb24c35dd2904182d.jpg "Infographic showing the workflow of a baghouse dust collector system from dirty air intake through filter bags capturing dust particles, dust falling into collection hopper, and clean air exhausting from outlet, with labels for housing, filter bags, cleaning system, hopper, and fan - baghouse dust collector filters infographic ") ## The Heart of the System: Understanding Baghouse Dust Collector Filters **Baghouse dust collector filters** are the heart of your dust collection system. These engineered fabric filters capture microscopic particles while allowing clean air to pass through. When dust-laden air enters the baghouse, particles accumulate on the filter surface, forming a “dust cake.” This dust cake improves filtration, helping to trap even finer particles and achieve collection efficiencies greater than 99 percent. The filter media’s job is to balance particle capture with airflow, which is key to an effective system. You can explore our complete range of [Dry Dust Collector Filter Bags](https://www.slyinc.com/products/dry-dust-collector-filter-bags/) to see the variety available. ### Different Types of Baghouse Filter Media Selecting the right filter media is critical. The operating temperature, chemical exposure, and dust characteristics all determine the correct material for your application. **Polyester** is the most common filter material. It handles temperatures up to 275°F, resists acids well, and offers excellent value. Our [Polyester PE](https://www.slyinc.com/products/dry-dust-collector-filter-bags/polyester-pe/) filters are versatile workhorses, but they can struggle in moist heat where hydrolysis can break down the fibers. For higher temperatures, **Aramid** (e.g., Nomex) handles continuous temperatures up to 400°F. It provides good resistance to acids and alkalis in dry conditions and has excellent abrasion resistance, making it ideal for rougher dust. For demanding environments, **P-84** polyimide felt performs well at temperatures up to 460°F. It excels at capturing fine particulate matter, making it a top choice where collection efficiency is critical. Learn more in our guide on [Efficiency and Durability: High-Temperature Dust Collector Bags](https://www.slyinc.com/blog/efficiency-and-durability-high-temperature-dust-collector-bags/). **PTFE** (Teflon) is a premium filter material with temperature ratings up to 500°F and exceptional chemical resistance. Its smooth surface allows for easy dust cake release, improving cleaning and extending filter life, though it has a higher initial cost. **Fiberglass** also has a 500°F rating and good acid resistance. However, it is more brittle than felt materials and can be damaged more easily during installation or cleaning. ### Filter Media Construction and Finishes Filter bag construction significantly impacts performance. Traditional **needle punch** felts are created by tangling fibers with barbed needles. This process can create an irregular surface where fine dust particles embed deeply into the fabric, making cleaning difficult. Specialty finishes improve filter performance. **Oleophobic treatments** are essential for greasy particulate, as they repel oil and moisture to prevent the filter surface from blinding. **Anti-static treatments** are critical for safety in combustible dust applications; they prevent static charge buildup, reducing spark risks and improving dust release during cleaning. **PTFE membrane lamination** adds a surface filtration layer that prevents dust from entering the base fabric. This results in superior dust cake release, lower pressure drop, and high efficiency for fine particulate, extending service life. These [Filter Bag Finishes](https://www.slyinc.com/products/dry-dust-collector-filter-bags/filter-bag-finishes/) allow for customized solutions to meet specific application demands. ## How It All Works: Anatomy of a Baghouse System A baghouse is an engineered system where each component works to transform dirty industrial air into clean exhaust. To see how these parts work together, watch [The Anatomy of a Baghouse](https://www.slyinc.com/resources/videos/the-anatomy-of-a-baghouse/). ![Cutaway diagram of a baghouse dust collector with labels for key components like housing, filter bags, cages, hopper, inlet, outlet, fan, and cleaning system - baghouse dust collector filters](https://images.bannerbear.com/direct/4mGpW3zwpg0ZK0AxQw/requests/000/115/311/306/kW7yv9eBdzp13OLr6NLRwa5Px/0131c5208d90561cfa4bec890565ea0d39ea7b2b.jpg "Cutaway diagram of a baghouse dust collector with labels for key components like housing, filter bags, cages, hopper, inlet, outlet, fan, and cleaning system - baghouse dust collector filters") From the moment dirty air enters until clean air exits, every component is designed to separate dust from air with maximum efficiency. ### Housing, Hoppers, and Ductwork The **collector housing** is a robust metal enclosure that contains the components and directs airflow to maximize filtration. A critical design choice is the [High vs. Low Inlet Baghouse](https://www.slyinc.com/blog/high-vs-low-inlet-baghouses/) configuration, which impacts dust loading and wear. A well-designed inlet allows heavier particles to drop out of the airstream before reaching the **baghouse dust collector filters**, reducing the load on the bags. Below the filters, the cone-shaped **dust collection hopper** collects dislodged dust. **Screw conveyors** or other mechanisms then transport the dust for disposal or recycling. Finally, **ductwork** connects the dust-generating processes to the baghouse, maintaining proper airflow velocity to prevent dust from settling in the pipes. ### Fans, Cages, and Valves The **fan or blower** creates the negative pressure that pulls contaminated air into the collector and filters the dust from the airstream. Without adequate fan capacity, the system cannot function effectively. Inside, each filter bag is supported by a **filter bag cage**, a wire framework that prevents the bag from collapsing during operation and cleaning cycles. Proper cage design is crucial for filter integrity and efficiency. We offer a wide selection of durable [Dust Collector Cages](https://www.slyinc.com/products/dust-collectors/replacement-parts/dust-collector-cages/). **Diaphragm and solenoid valves** control the cleaning system. These precision components time the delivery of compressed or reverse air. In pulse-jet systems, solenoid valves trigger precisely timed bursts of air, which are delivered by the diaphragm valves. The reliability of these [Dust Collector Valves](https://www.slyinc.com/products/dust-collectors/replacement-parts/dust-collector-valves/) directly impacts cleaning effectiveness. ### Cleaning Systems A cleaning system periodically removes accumulated dust from **baghouse dust collector filters** to maintain airflow and efficiency. Different methods offer distinct advantages. **Pulse-jet cleaning**, used in our [TubeJet Baghouse Dust Collectors](https://www.slyinc.com/products/dust-collectors/tubejet-baghouse-dust-collectors/), delivers short, powerful bursts of compressed air (80-100 psig) into the filter bags. This pressure wave flexes the fabric, dislodging the dust cake. While highly effective, this aggressive action can stress the filter media over time and consumes compressed air. **Reverse air cleaning**, used in our [Reverse Air Collectors](https://www.slyinc.com/products/dust-collectors/reverse-air-collectors/), is a gentler method. It uses a low-pressure reverse airflow (3-15 psig) to slowly collapse the bags, causing the dust cake (collected on the inside) to fall into the hopper. This reduces mechanical stress and can extend filter life, but it may be less effective on sticky dusts. **Shaker cleaning** uses mechanical vibration to shake dust loose from the inside of woven filter bags. This cost-effective method is suitable for intermittent-duty applications but is generally less thorough than pulse-jet or reverse-air systems, which can lead to declining efficiency. The right choice depends on your dust, operating conditions, and performance goals. Our experience since 1902 helps you select the perfect cleaning system for your application. ## Selecting and Maintaining Filters for Longevity and Cost Savings Proper selection and maintenance of your **baghouse dust collector filters** are key to system longevity and cost savings. The right approach can extend filter life two to three times, lower operating costs, and prevent emergency shutdowns. Proactive maintenance, especially monitoring the pressure drop across your filters, is critical. Learn more in our guide on [How to Monitor Baghouse Health Through Differential Pressure](https://www.slyinc.com/blog/how-to-monitor-baghouse-health-through-differential-pressure/). ### Factors for Selecting the Correct Baghouse Filter Selecting the right filter requires matching the media to the application. Key factors include: - **Temperature**: Process temperature dictates the material. Polyester is suitable for up to 275°F, while aramid (400°F), P-84 (460°F), or fiberglass are needed for higher temperatures. - **Dust properties**: Abrasive dust requires durable media. Sticky or oily dust benefits from an oleophobic treatment or PTFE membrane for clean dust cake release. Fine particulate may require high-efficiency media to prevent blinding. - **Chemical resistance**: The gas stream and dust chemistry are critical. Polypropylene works well against many chemicals at low temperatures, while PTFE offers broad resistance at high temperatures. - **Air-to-cloth ratio**: This ratio of air volume to filter area determines filtration velocity. A ratio that is too high overworks filters, shortening their life and reducing efficiency. Getting these factors right is crucial. For more details, see our guide on [How to Select the Correct Filter Media](https://www.slyinc.com/blog/how-to-select-the-correct-filter-media/). ### Signs of Failing Baghouse Dust Collector Filters Knowing the signs of failing filters can prevent major issues. Key indicators include: - **Visible emissions**: Dust plumes from the stack signal filter failure and a compliance issue. - **High differential pressure**: A pressure drop that remains high after cleaning indicates blinded filters that are no longer releasing dust properly. - **Reduced airflow**: Weaker capture at pickup points suggests filters are obstructing airflow and choking system performance. - **Physical damage**: Holes, tears, or excessive wear found during inspection are clear signs of failure. Dye testing can help locate hard-to-find leaks, as explained in our guide on [Detecting Leaks in Your Baghouse System Through Dye Testing](https://www.slyinc.com/blog/detecting-leaks-in-your-baghouse-system-through-dye-testing/). Ignoring these signs can lead to non-compliance, higher energy costs, equipment damage, and safety hazards. Knowing when to change filters is crucial. Learn more in [3 Reasons to Replace Your Dust Collector Filter Bags](https://www.slyinc.com/blog/3-reasons-to-replace-your-dust-collector-filter-bags/). ## Staying Compliant: Safety and Environmental Regulations Adhering to air quality standards and ensuring worker safety are legal and ethical imperatives. Your **baghouse dust collector filters** are critical for achieving both, protecting the environment, your people, and your bottom line. ### Meeting EPA Emissions Standards The [Clean Air Act](https://www.epa.gov/clean-air-act-overview) made fabric filter baghouses essential for meeting environmental regulations. With collection efficiencies greater than 99 percent, **baghouse dust collector filters** are indispensable for meeting strict standards for Particulate Matter (PM2.5) and MACT (Maximum Achievable Control Technology). The right filter media is your first line of defense. For example, improper filter selection in an acidic environment can lead to corrosion, bag blinding, and emissions that exceed legal limits. The EPA provides detailed guidance on [Monitoring by Control Technique – Fabric Filters](https://www.epa.gov/air-emissions-monitoring-knowledge-base/monitoring-control-technique-fabric-filters), highlighting that compliance requires continuous monitoring and filters matched to your application’s demands. ### NFPA Compliance and Fire Safety When dealing with combustible dusts, a spark can lead to catastrophic fires or explosions. Specialized **baghouse dust collector filters** and system design are critical for safety. **Anti-static filters** prevent static electricity buildup that could ignite dust, while **grounding straps** provide a safe path for electrical charges to dissipate. See our video on [NFPA Recommended Filter Bag Grounding Strap Design](https://www.slyinc.com/resources/videos/nfpa-recommended-filter-bag-grounding-strap-design/) for details. Fire safety also includes system-level features like **explosion venting**, which directs explosive force safely away from personnel and equipment. Our guide on [How to Ensure NFPA and OSHA Compliance in Your Dust Collection System](https://www.slyinc.com/blog/how-to-ensure-nfpa-and-osha-compliance-in-your-dust-collection-system/) covers how all components work together to protect your facility and your people. ## Frequently Asked Questions about Baghouse Dust Collector Filters Here are answers to common questions about **baghouse dust collector filters** to help you make smarter decisions for your dust collection system. ### How do different cleaning methods affect filter life? The cleaning method significantly impacts filter life. - **Pulse-jet cleaning** uses powerful bursts of compressed air (80-100 psig) to effectively remove dust. However, this force puts mechanical stress on the bags, which can shorten filter life if not properly tuned. Modern media and precise controls can minimize this wear. Learn more about [Dust Collector Filter Cleaning: Compressed Air Requirements for Cleaning Bag Filters](https://www.slyinc.com/blog/dust-collector-filter-cleaning-compressed-air-requirements-for-cleaning-bag-filters/). - **Reverse-air cleaning** uses low-pressure air (3-15 psig) to gently collapse the bags, releasing the dust cake. This kinder method can extend filter life but may be less effective on stubborn dusts and can require more maintenance. - **Shaker cleaning** mechanically shakes bags to dislodge dust. It is cost-effective for intermittent use, but the physical agitation creates wear and tear, potentially leading to more frequent filter replacement. ### Should I replace my filter bags or can they be cleaned? While cleaning filters seems cost-effective, replacement is often the smarter financial decision. Cleaning can be a temporary fix, but filters can become permanently “blinded” when dust embeds too deeply for cleaning to restore airflow, especially with sticky or oily dusts. Replacement is necessary when there is physical damage (holes, tears), differential pressure remains high after cleaning, visible emissions are present, or the filter media has degraded from age, heat, or chemical exposure. The combined cost of repeated cleaning, reduced efficiency, higher energy bills, and potential fines often outweighs the cost of new filters. We explore this in detail in [Should I Replace My Filter Bags or Clean Them?](https://www.slyinc.com/blog/should-i-replace-my-filter-bags-or-clean-them/). ### What is the air-to-cloth ratio and why is it important? The air-to-cloth ratio is the volume of air (CFM) divided by the total filter media surface area (sq. ft.). This ratio determines the **filtration velocity**, or how fast air moves through your filters. If the velocity is too high, dust can be driven deep into the fabric or pass straight through, reducing efficiency and shortening the life of your **baghouse dust collector filters**. A high air-to-cloth ratio indicates an undersized system and leads to problems like high pressure drop, poor cleaning, and premature filter failure. A correct ratio allows the dust cake to form properly, maintaining high collection efficiency. Getting this calculation right is a fundamental step in designing an effective system, as shown in our [Infographic: How to Design a Dust Collection System](https://www.slyinc.com/blog/infographic-how-to-design-a-dust-collection-system/). ## Conclusion We’ve explored **baghouse dust collector filters**, from the variety of filter media like polyester, aramid, and PTFE to the different cleaning systems that keep them efficient. A simple fabric bag is a sophisticated piece of engineering, with finishes that can triple its working life. Selecting the right **baghouse dust collector filters** is an investment in your facility’s future. Matching the filter media to your temperature, dust, and chemical environment ensures compliance with EPA and NFPA standards. It protects your workers, equipment, and bottom line from downtime and premature failures. At Sly, LLC, we’ve been delivering reliable air pollution control solutions since 1902. From our facilities in Strongsville, Ohio, and Mathiston, Mississippi, we use our century of experience to solve any dust collection challenge. Understanding how your system works empowers you to make smarter operational decisions. Your facility deserves a unique dust collection solution. Whether you face high temperatures, abrasive materials, or combustible dusts, we can help. [Explore our full range of custom Dust Collectors](https://www.slyinc.com/products/dust-collectors/) to see how our expertise can deliver cleaner air, safer operations, and lower costs. **Categories:** Baghouse **Tags:** OSHA Compliance --- ### [The Definitive Guide to Baghouse Dust Collectors](https://www.slyinc.com/blog/the-definitive-guide-to-baghouse-dust-collectors/) **Published:** February 8, 2026 **Author:** Al Moretti **Excerpt:** Understanding Industrial Air Quality Control with Baghouse Technology Baghouse dust collectors are industrial air pollution control devices that remove dust and particulate matter from manufacturing processes using bag and cartridge filter media. **Content:** ## Understanding Industrial Air Quality Control with Baghouse Technology **Baghouse dust collectors** are industrial air-pollution control devices that remove dust and particulate matter from manufacturing processes using bag- or cartridge-type filter media. They’re the most common and cost-effective solution for controlling airborne contaminants in facilities worldwide. **Quick Overview:** - **What they are:** Fabric filter systems capture dust by passing contaminated air passes through a baghouse, where particulate matter collects on the filter bags or cartridges - **How they work:** A fan draws contaminated air into the housing, where dust collects on the filter surfaces, and clean air exits through the top. - **Collection efficiency:** Typically, 99% or better, even for very small particles - **Cleaning methods:** Pulse-clean bag and cartridge filters use bursts of compressed air to dislodge collected dust. Reverse-air systems use low-pressure, high-volume air for cleaning, while shaker-style units rely on mechanical agitation to clean the filters. - **Key applications:** Cement plants, steel mills, woodworking facilities, food processing, pharmaceuticals, mining, and chemical production, and many more If you’re managing an industrial facility, you know the challenges. Dust isn’t just a nuisance—it’s a health hazard, an explosion risk, and a regulatory compliance issue. The [EPA](https://en.wikipedia.org/wiki/United_States_Environmental_Protection_Agency) and [OSHA](https://en.wikipedia.org/wiki/Occupational_Safety_and_Health_Administration) have strict standards, and your workers deserve clean air. Baghouses solve this problem. They’ve been the workhorse of industrial dust collection since the late 1970s, when high-temperature fabrics made them practical for demanding applications. Today, they handle everything from fine pharmaceutical powders to abrasive cement dust at temperatures up to 550°F (or higher with specialty fabrics). The beauty of baghouse technology is its simplicity and versatility. Whether you’re dealing with heavy dust loads, sticky particulates, or high-temperature processes, there’s likely a baghouse solution that fits. But choosing the right system requires understanding how it works, what options are available, and how to maintain it for maximum efficiency. This guide will walk you through everything you need to know—from basic operation to advanced design considerations—so you can make informed decisions about your facility’s air quality control. ![Infographic showing the baghouse workflow: contaminated air enters through an inlet, passes through fabric filter bags where dust particles are captured on the surface, a cleaning system periodically removes accumulated dust into a collection hopper, and clean filtered air exits through the fan and stack - baghouse dust collectors infographic ](https://images.bannerbear.com/direct/4mGpW3zwpg0ZK0AxQw/requests/000/117/949/515/Nxmo39RaVQ9yMENRQAOe2Ewg5/4976f24899ef4e1e7ea4bc01a3d227473ad01b49.jpg "Infographic showing the baghouse workflow: contaminated air enters through an inlet, passes through fabric filter bags where dust particles are captured on the surface, a cleaning system periodically removes accumulated dust into a collection hopper, and clean filtered air exits through the fan and stack - baghouse dust collectors infographic ") ## What Is a Baghouse and How Does It Work? Picture a giant vacuum cleaner for your factory—that’s essentially what a **baghouse dust collector** is, though calling it that doesn’t quite do justice to its engineering sophistication. These air pollution control devices are designed to capture and remove airborne dust and particulate matter from industrial processes, keeping your facility compliant and your workers safe. The filtration process is surprisingly simple. A fan or blower pulls contaminated air into the baghouse housing, where it encounters filter media in the form of bags or cartridges. As dirty air passes through these porous fabric filters, dust particles are trapped on the surface, while clean air continues through and exits the system. Here’s where it gets interesting: those filters don’t work alone for long. As dust accumulates on their surfaces, it forms a dust cake. You might think this buildup would be a problem, but it’s actually a feature. This dust cake acts as a secondary filter, more effective than the filter fabric itself, capturing particles so fine they would otherwise slip through. That’s why **baghouse dust collectors** routinely achieve collection efficiencies of 99% or better, even with microscopic particles. Of course, you can’t let that dust cake build up forever. As it thickens, it creates resistance to airflow—what we call **pressure drop**. This is a critical measurement because too much pressure drop means your system has to work harder, wasting energy and reducing efficiency. That’s where the cleaning system comes in. It periodically knocks or blasts accumulated dust off the filters, allowing it to fall into a collection hopper below while the filters resume operation. Unlike household vacuums that require new filters every few months, baghouses are engineered for continuous operation. Their built-in cleaning mechanisms automatically regenerate the filter media, keeping your air clean 24/7 without requiring constant filter replacement. If you want to explore the fundamentals in more depth, check out our article on [What is a Baghouse?](https://www.slyinc.com/blog/what-is-a-baghouse/). For an even deeper look at how these systems separate dust from air so effectively, read [The Baghouse Insider: Separating Dust from Air](https://www.slyinc.com/blog/the-baghouse-insider-separating-dust-from-air/). ### Core Components of a Baghouse System Understanding how **baghouse dust collectors** work means getting familiar with their essential parts. Each component has a specific job, and they all work together to keep your facility’s air clean. The **filter media**—those fabric bags and cartridges we’ve been talking about—are the heart of the system. These long, cylindrical tubes are where the actual dust collection happens. The fabric choice matters enormously because different dusts, temperatures, and chemical environments require different materials. You wouldn’t use the same fabric for a hot cement kiln as you would for a cool woodworking shop. Filter bags need support, which is where **filter cages** come in. These metal frames slide into each bag to prevent collapse under pressure or during cleaning cycles. Think of them as the skeleton that gives the bag its shape. Filter cartridges are self-supporting. The **fan or blower** is your system’s engine, creating airflow that pulls in contaminated air and pushes clean air out. Getting the fan sizing right is crucial—too weak, and you won’t move enough air; too powerful, and you’ll damage your bags or waste energy. We’ve already mentioned the **cleaning system**, but it’s worth emphasizing how vital this component is. Whether it uses mechanical shaking, reverse air, or compressed-air pulses, this mechanism keeps your filters operating efficiently by periodically removing accumulated dust. At the bottom of every baghouse sits the **hopper**, a pyramidal or trough-shaped collection area where dislodged dust falls after cleaning. Below that, a **discharge unit**—usually a rotary valve or screw conveyor—removes the collected dust for disposal or recovery. The **tubesheet** is a horizontal plate that serves dual functions: it holds the filter bags in place and separates the dirty side of the system from the clean side. Only filtered air gets past this barrier. Finally, the **housing** encases everything, protecting internal components from weather and directing airflow where it needs to go. It’s the shell that holds this sophisticated filtration machine together. Each of these components has been refined over decades of industrial use. At Sly, we’ve been perfecting baghouse design since 1902, when we built the first cloth-type dust collector. That experience shows in how our systems integrate these components into reliable, efficient air pollution control solutions that keep your operations running smoothly and your air clean. ## Types of Baghouses and Their Cleaning Mechanisms When you’re choosing a **baghouse dust collector** for your facility, one of the most important decisions you’ll make is selecting the right cleaning mechanism. Think of it this way: the filter bags do the heavy lifting of capturing dust, but they need a reliable way to shake off the accumulated dust cake so they can keep working efficiently. The cleaning system enables that. The three main cleaning methods—mechanical shaker, reverse air, and pulse jet—each have distinct characteristics and ideal use cases. Some are gentle and steady, others are quick and powerful. The right choice depends on your specific dust characteristics, operational needs, and budget. ![Diagrams comparing shaker, reverse air, and pulse jet cleaning actions - baghouse dust collectors](https://images.bannerbear.com/direct/4mGpW3zwpg0ZK0AxQw/requests/000/117/949/360/bknAjN4e763y2XOVYXPRKxlD8/3ce45bd5f76fe073ef5db6816b849695486bc939.jpg "Diagrams comparing shaker, reverse air, and pulse jet cleaning actions - baghouse dust collectors") Let’s break down how each type works and where they shine. ### Mechanical Shaker The mechanical shaker is the elder statesman of baghouse cleaning systems. It’s straightforward and gets the job done with good old-fashioned mechanical action. In these systems, dust collects on the **inside** of the filter bags. When it’s time to clean, the system shuts down the airflow to that compartment—this is called **off-line cleaning**—and a motor physically shakes the bags to knock the dust loose. The simplicity of this design means you’ll face a **low capital cost** upfront, which can be attractive if you’re working within a tight budget. The straightforward mechanics also make these systems easier to understand and operate. However, because you need to take compartments offline for cleaning, they work best for **intermittent operation** rather than continuous processes. Mechanical motion causes wear and tear on the bags and moving parts, so you can expect **higher maintenance** requirements than with other systems. But if you’re dealing with **non-sticky dusts** in applications like **minerals processing**, a mechanical shaker baghouse can be a reliable workhorse. They handle abrasive materials well and don’t require a compressed-air system. ### Reverse Air If the mechanical shaker is the straightforward older sibling, the reverse air baghouse is the gentler, more sophisticated one. These systems collect dust on the **outside** of the bags, but they clean using a much kinder approach. Instead of shaking, they use **low-pressure, high-volume air** blown in the opposite direction of normal airflow. **Here’s how it works:** A continuously rotating arm with integral Venturis directs cleaning air into the filters’ interior. An internally mounted centrifugal pressure blower supplies this cleaning air. The resulting gentle reverse airflow slightly inflates the bags. This subtle movement fractures the dust cake, allowing it to fall into the hopper. Because the cleaning action is less aggressive, filter wear is reduced, and bag life is typically extended—meaning longer service intervals before replacement is required. The reverse air design really shines when you’re working with **high-temperature fabrics** like fiberglass. These materials can be brittle and wouldn’t survive the aggressive shaking of a mechanical system, but they handle reverse air cleaning beautifully. The system is **compartmentalized**, meaning you can clean one section while others keep running, which is perfect for continuous operations. You’ll find reverse air baghouses in facilities where processes run at elevated temperatures or where dust is combustible and requires careful handling. Our [TubeJet Baghouse Dust Collectors](https://www.slyinc.com/products/dust-collectors/tubejet-baghouse-dust-collectors/) feature advanced baghouse technology and can be customized for various cleaning methods, including reverse-air systems. ### Pulse Jet Now we’re talking about the most popular kid on the block. The pulse jet baghouse has become the **most common type** of dust collector in modern industry, and for good reason. It’s efficient, versatile, and keeps running without interruption. **Here’s what makes it different:** An exhaust fan draws ventilation air, creating a negative pressure environment within the baghouse, causing dust to collect on the outside of the filter media. Filter bags are supported by internal metal cages, while cartridge filters are self-supported. Above the filters, a compressed-air manifold with strategically placed nozzles delivers short, high-pressure, low-volume bursts of air directly into the bags. These pulses generate a shockwave that rapidly deflects the filters outward, dislodging the dust cake and causing it to fall into the hopper below. The beauty of pulse jet systems is **continuous operation**. Unlike shaker air systems that require shutting down compartments for cleaning, pulse-jet baghouses clean on the fly. They can pulse individual rows of filters while the rest of the system keeps filtering. This means no downtime and consistent performance. Because cleaning is so effective, pulse-jet systems can operate at **higher air-to-cloth ratios**. In plain English, that means you get more filtering capacity in a smaller footprint. You need less filter area to handle the same amount of dirty air, resulting in a more compact unit and often lower overall costs, despite the need for compressed air. The **high collection efficiency** of pulse jet systems—typically 99% or better—combined with their versatility, makes them suitable for everything from cement plants to pharmaceutical facilities. They handle sticky dusts, abrasive materials, and varying dust loads with equal confidence. Want to dive deeper into how this robust cleaning mechanism works? Check out [The Baghouse Insider: Separating Dust from Air](https://www.slyinc.com/blog/the-baghouse-insider-separating-dust-from-air/) for more about the pulse-jet baghouse and why it has become the go-to choice for so many industrial applications. The efficiency of pulse-jet cleaning enables **baghouse dust collectors** to achieve much higher volumetric throughput per unit filter area than shaking and reverse-air systems. That’s why you’ll find them working hard in facilities across the world. ## Designing for Performance: Key Factors and Filter Media Getting a **baghouse dust collector** right isn’t just about picking something off the shelf. It’s about understanding your specific process and designing a system that will perform reliably for years to come. At Sly, LLC, we’ve been doing this since 1902, and we know that every detail matters when it comes to delivering the cleanest air possible. The performance of your baghouse depends on a careful balance of engineering principles and real-world application needs. You need to consider **system sizing** to handle your airflow requirements, **operational efficiency** to keep costs down, and the specific characteristics of the dust you’re collecting. That last point is crucial—dust isn’t just dust. Particle size, abrasiveness, temperature, moisture content, and chemical composition all play major roles in how your system should be designed. Get any of these factors wrong, and you’re looking at premature filter failure, reduced efficiency, and costly downtime. Nobody wants that. That’s why understanding [Dust Collector Sizing: What Size Do You Need?](https://www.slyinc.com/blog/dust-collector-sizing-what-size-do-you-need/) is such an important starting point. ### Key Considerations for Designing Baghouse Dust Collectors When we engineer a baghouse, we’re looking at the complete picture of your operation. Here are the critical variables that determine whether your system will be a workhorse or a headache: **Air-to-cloth ratio** is perhaps the most fundamental parameter. It’s the air volume flowing through your baghouse divided by the total filter area. Think of it as the speed at which air passes through your filters. Too high, and you’ll wear out your bags quickly while getting poor collection efficiency. Too low, and you’re spending more than necessary on a larger system. Getting this ratio right is essential for both efficient filtration and reasonable bag life. **Pressure drop monitoring** is your baghouse’s vital sign. As dust accumulates on your filter bags, the resistance to airflow increases—that’s your differential pressure, ΔP. Monitoring this metric tells you when cleaning cycles should occur, when filters might clog, and when issues are developing before they become expensive failures. **Filter drag** is closely related to pressure drop. It’s the resistance created by that dust cake building up on your filter surface. While we want some dust cake for optimal filtration, too much indicates it’s time to clean. This balance between cake buildup and cleaning is where efficiency lives. **Inlet design** might not sound exciting, but it’s absolutely critical. How dirty air enters your baghouse affects everything downstream. A well-designed inlet—often with an expanded diffuser—prevents turbulence in the hopper that can re-entrain dust. It creates what we call a quiescent free-board zone, which is just a fancy way of saying “a calm area where dust can settle peacefully.” This reduces filter abrasion and improves overall performance. We’ve written about different approaches in [High vs Low Inlet Baghouses](https://www.slyinc.com/blog/high-vs-low-inlet-baghouses/) if you’re curious about the options. **Interstitial velocity** refers to the upward speed of air in the space between your filter bags. Keep this too high, and the dust you just cleaned off the bags gets swept right back up and redeposited. It’s like trying to sweep your floor in a windstorm. We design systems to keep interstitial velocity low enough that cleaned dust actually reaches the hopper. All these factors work together to ensure your **baghouse dust collector** isn’t just compliant with regulations, but truly optimized for long-term, cost-effective operation. ### Choosing the Right Filter Media for Your Baghouse Dust Collectors If the baghouse is the heart of your dust collection system, the filter media is the heart valve—absolutely critical, and when it fails, everything fails. Choosing the right filter bags directly influences your collection efficiency, how long your system runs between maintenance, and your overall operating costs. Here’s the reality: there’s no universal “best” filter media. The right choice depends entirely on what you’re filtering and under what conditions. Pick the wrong material, and you’ll be replacing bags constantly, watching efficiency drop, and spending far more on maintenance than you should. Our article [A Deep Dive into Filter Bags for Dust Collection Systems](https://www.slyinc.com/blog/a-deep-dive-into-filter-bags-for-dust-collection-systems/) covers this topic extensively. Filter bags are typically long cylindrical tubes, ranging from 2 to 12 inches in diameter and 3 to 40 feet in length. The material matters enormously. **Polyester** is economical and well-suited for most general applications, but it has temperature and chemical limitations. Aramid (like Nomex) can handle higher temperatures and is more durable. Fiberglass is your go-to for high-temperature applications, but it can be brittle. P84 offers excellent chemical resistance and performs well in challenging conditions. PTFE is the premium choice for the most demanding applications, including high-temperature environments and aggressive chemicals. Here’s how these common materials compare: | Filter Media Type | Temperature Rating (Max Continuous) | Acid Resistance | Alkali Resistance | Typical Cost | Key Characteristics | |---|---|---|---|---|---| | **Polyester** | 275°F (135°C) | Fair | Good | Low | Most economical; good for general applications; moisture resistant | | **Aramid** | 400°F (204°C) | Fair | Good | Medium | Excellent abrasion resistance; good strength | | **Fiberglass** | 500°F (260°C) | Excellent | Poor | Medium | High temperature capability; can be brittle; needs careful handling | | **P84** | 500°F (260°C) | Good | Fair | High | Excellent fine particle capture; good chemical resistance | | **PTFE** | 500°F+ (260°C+) | Excellent | Excellent | Very High | Superior chemical resistance; excellent cake release; long life | Beyond the base material, you also need to consider the fabric construction. **Woven fabrics** are durable but have larger openings between fibers. **Felted or needled media** provides better filtration of fine particles. **Membrane filters** add a thin layer (often ePTFE) to the surface, which dramatically improves filtration efficiency and makes cleaning easier—our article, “When Should You Use an ePTFE Membrane Filter Bag?,” explains when this premium option makes sense. **Cartridge (or pleated) filters** pack more filter area into less space, allowing for more compact designs. The bottom line? Filter media selection isn’t something to guess at. It requires understanding your dust characteristics, operating temperatures, chemical exposure, and moisture levels. Get it right, and your **baghouse dust collectors** will run efficiently for years. Get it wrong, and you’ll know it quickly—and expensively. **Categories:** Baghouse System --- ### [Elevating Clean Air Standards: Dust Collection Solutions for the Plastics Industry](https://www.slyinc.com/blog/elevating-clean-air-standards-dust-collection-solutions-for-the-plastics-industry/) **Published:** August 26, 2025 **Author:** Al Moretti **Content:** Dust collection in plastic manufacturing isn’t just a cleanup task. It’s critical to protect air quality, worker safety, and operational efficiency. Processes such as pelletizing, grinding, molding, and conveying produce fine dust particles, often called “fines,” which can lead to serious risks like combustible dust explosions and harmful chemical exposure. At Sly, we help manufacturers tackle these issues head-on with innovative dust collection systems that enhance air quality, boost operational efficiency, and meet strict safety standards. ## **Why Dust Collection Matters in Plastic Manufacturing** Dust collection in plastic manufacturing is about more than just keeping facilities clean. The dust created during production often contains chemicals like resins, plasticizers, and colorants. Depending on the process, these substances can become airborne, threatening worker health and safety. Additionally, plastic dust is combustible, creating the potential for devastating explosions when not properly controlled. To address these risks effectively, manufacturers need robust solutions beyond basic cleanup. That’s where our expertise comes in. We provide customized systems that capture harmful dust and protect your operation from regulatory fines and equipment downtime. ## **Tailored Dust Collectors for Every Need** We understand that no two plastic manufacturing facilities are the same. That’s why our dust collectors are designed to adapt to the specific needs of each application. Whether you’re working with small-scale pelletizing or large-scale molding facilities, we have a system to match your requirements. - **Cartridge Filter Collectors**: These compact systems are perfect for facilities with limited space but significant dust generation. They use efficient pulse cleaning technology to capture fine particles without interrupting production. - **Baghouse Collectors**: Ideal for large operations with high dust loads, baghouses handle heavy-duty tasks while maintaining consistent airflow. - **Explosion Protection Expertise**: Given the combustibility of plastic dust, we offer [advanced explosion protection](https://www.slyinc.com/products/dust-collectors/explosion-protection-expertise/) options. Our systems meet NFPA standards, including features like explosion vents and specialty equipment to mitigate risks. By using the right dust collection system, you can improve workplace safety while maintaining product quality. It’s a win-win for any plastics manufacturer. ## **Improving Efficiency and Sustainability** Dust collection in [plastic manufacturing](https://www.slyinc.com/industries/plastics/) safeguards your facility and boosts operational efficiency. When equipment and workspaces are free from accumulating dust, machinery runs smoother, breakdowns decrease, and maintenance costs drop. Additionally, effective filtration systems prevent cross-contamination, ensuring that your products meet quality standards without interruptions. Environmental compliance is another key benefit. Manufacturing plants must adhere to strict air quality regulations under laws like the Environmental Protection Act. Our systems help you stay within permissible emission levels while reducing environmental impact. ## **Steps Toward Better Air Quality** Investing in proper dust control doesn’t have to be overwhelming. Start by identifying areas where dust generation is most prominent in your facility—grinding stations or conveyance points are common culprits. Next, evaluate whether your current systems meet regulatory guidelines or need upgrades. If improvements are necessary, our team is ready to provide a detailed assessment and recommend the best solution for your operation. Let us know if you’re ready to take the next step toward cleaner air and safer work conditions. Whether you’re retrofitting an existing system or installing a new one, we’re here to help you find the right solution. You can [request a quote](https://www.slyinc.com/contact/request-a-quote/) to get started. **Categories:** Dust Collection Equipment, Dust Collection System, Dust Collector System --- ### [Maximizing Dust Collection in Sand Processing](https://www.slyinc.com/blog/maximizing-dust-collection-in-sand-processing/) **Published:** September 15, 2025 **Author:** Al Moretti **Excerpt:** Sand processing produces sharp, lightweight dust particles that are both abrasive and hazardous to inhale. Left unchecked, sand dust can cause serious respiratory risks (including silicosis) and trigger compliance issues with OSHA and EPA standards. **Content:** ## Blog Highlights - Why sand dust is dangerous and difficult to control - Benefits of effective dust collection systems - Key features for handling abrasive sand dust - New technologies and innovations in dust collection - How to design a system for your plant’s unique needs - Best practices for maintenance and safety - Future trends in smarter, greener dust collection --- ## The Role of Dust Collection in Sand Processing [Sand processing](https://www.slyinc.com/industries/mining-minerals/) produces sharp, lightweight dust particles that are both **abrasive** and **hazardous to inhale**. Left unchecked, sand dust can cause serious respiratory risks (including silicosis) and trigger compliance issues with OSHA and EPA standards. Dust control isn’t optional—it’s critical for protecting workers, extending equipment life, and staying compliant. ## Benefits of Effective Dust Collection Systems A well-designed system does more than clean the air. Benefits include: - **Health & Safety**: Reduces exposure to silica dust. - **Compliance**: Helps meet strict OSHA and EPA standards. - **Equipment Protection**: Prevents buildup on motors, conveyors, and bearings. - **Operational Efficiency**: Improves uptime and reduces maintenance costs. ## Essential Features of Sand Dust Collection Systems When dealing with abrasive sand dust, certain design choices make a big difference: - **Durable Construction** – Abrasion-resistant housings and ductwork. - **High-Efficiency Filters** – Baghouse and HEPA-grade filters to trap fine silica. - **Optimized Airflow** – Prevents clogging and improves filter life. - **Easy Maintenance** – TubeJet® collectors with top bag removal and walk-in plenums. - **Wet Scrubbers (optional)** – Effective for sticky or ultra-abrasive materials. ## Cutting-Edge Innovations in Dust Collection - **Pulse Jet Cleaning**: Filters self-clean while in operation. - **TubeJet Baghouse Systems**: Flexible, scalable solutions for small and large operations. - **Real-Time Monitoring**: Sensors track airflow, filter health, and system performance. ## Designing a Dust Collection System for Sand Processing ### Assessing Specific Needs Every plant is different. Layout, dust points, and volume determine whether baghouses, vertical cartridge collectors, or hybrid systems are best. ### Placement & Customization Strategic placement ensures dust capture at the source, minimizing duct runs and preventing buildup. Matching capacity to material flow avoids overload and downtime. ## Operational & Maintenance Best Practices - **Routine Maintenance**: Schedule filter checks, duct inspections, and system cleaning. - **Staff Training**: Teach operators how to spot issues and follow safety protocols. ## Future Trends in Sand Dust Collection The industry is shifting toward: - **Energy-Efficient Motors** - **Predictive Maintenance** - **Smart Controls for Real-Time Airflow Adjustments** - **Sustainability & Zero-Emission Goals** --- ## FAQs About Sand Dust Collection **Q: Why is sand dust especially dangerous?** A: Sand dust contains fine crystalline silica, which can cause long-term respiratory diseases like silicosis if inhaled regularly. **Q: What’s the best dust collector for sand processing?** A: Baghouses are the most common, but some facilities benefit from cartridge collectors or wet scrubbers, depending on volume and material characteristics. **Q: How often should filters be replaced?** A: It depends on load and usage. With proper maintenance and pulse jet cleaning, filters can last significantly longer, but inspections should be scheduled routinely. **Q: Can dust collection systems lower operating costs?** A: Yes. By reducing equipment wear, avoiding downtime, and ensuring compliance, dust collection systems save money long term. --- ## Smart Dust Strategies Build Long-Term Success Investing in advanced sand dust collection keeps operations **safe, compliant, and efficient**. At **Sly Inc.**, we design custom systems built around your plant’s unique needs, with technology that supports both today’s challenges and future growth. 👉 **Ready to improve your dust collection? [Request a quote](/contact/request-a-quote/)** and let’s build the right solution for your facility. **Categories:** Dust Collection Equipment, industrial applications --- ### [Dust Collection Innovations for Mining and Mineral Processing](https://www.slyinc.com/blog/dust-collection-innovations-for-mining-and-mineral-processing/) **Published:** October 29, 2025 **Author:** Al Moretti **Excerpt:** Mining powers modern life—supplying raw materials for factories, construction, and energy. Crushers, conveyors, and blasting, however, generate clouds of dust that threaten air quality, worker safety, and operational efficiency. Investing in advanced dust collection keeps production clean, safe, and cost-effective. **Content:** ## Blog Highlights - Mining dust poses health, safety, and equipment risks without proper control. - Advanced collectors and scrubbers capture fine and abrasive particulates. - Smart controls and automation improve efficiency and compliance. - Custom dust control systems extend equipment life and reduce downtime. - Future trends include AI-driven maintenance and energy-efficient designs. --- ## Why Dust Control Matters in Mining Mining powers modern life—supplying raw materials for factories, construction, and energy. Crushers, conveyors, and blasting, however, generate clouds of dust that threaten air quality, worker safety, and operational efficiency. Investing in advanced dust collection keeps production clean, safe, and cost-effective. --- ## Key Challenges in Mining Dust Control ### 1. High-Volume Dust from Operations Blasting, crushing, and transfer points generate large amounts of fine dust. Without capture, particles spread quickly and overwhelm plant environments. ### 2. Health & Safety Hazards - **Silicosis risk:** Long-term exposure to respirable dust can cause serious respiratory disease. - **Combustibility:** Fine dust can ignite under the right conditions, creating fire or explosion risks. ### 3. Equipment Damage Dust acts like abrasive grit. It wears down bearings, seals, and ductwork—shortening equipment life and driving costly downtime. ### 4. Tightening Compliance Standards EPA and MSHA rules demand lower emissions and documented dust control. Plants need systems that prove performance while staying flexible. --- ## Innovations in Mining Dust Collection ### Advanced Dry Collectors Our **[TubeJet® pulse jet collectors](https://www.slyinc.com/products/dust-collectors/tubejet-baghouse-dust-collectors/stj-sbr-square-series-pulse-jet-collectors/)** handle temperatures up to 500 °F and allow bag changes without tools. Low-velocity inlets cut turbulence for stable airflow and energy efficiency. ### Wet Scrubbing Solutions **[Venturi scrubbers](https://www.slyinc.com/products/industrial-wet-scrubbers/venturi-wet-scrubber/)** mix water and gas at high speed to remove particulates. With open throats that resist plugging, they also allow fines recovery for reduced waste. ### Bulk Transfer Dust Control Industrial **[loading spouts](https://www.slyinc.com/products/industrial-bulk-solids-loading-spouts/)** seal drop points to prevent fugitive dust. Four-cable hoists keep sleeves aligned, even in tough environments. ### Smart Automation Sensors track differential pressure, motor load, and airflow. Controls adjust pulse timing or scrubber flow automatically—creating a responsive dust control network instead of isolated equipment. --- ## Benefits on the Plant Floor - **Cleaner air, safer crews:** Reduce exposure, improve visibility, and cut respiratory risks. - **Longer equipment life:** Protect bearings and seals, extending service cycles. - **Higher uptime:** Fewer shutdowns mean more throughput and profitability. - **Stronger compliance:** Stay ahead of MSHA/EPA standards with documented control. - **Lower costs:** Energy savings and targeted maintenance reduce total operating expenses. *[Case in point](https://www.slyinc.com/resources/case-studies/durable-loading-spouts-stands-up-to-salt-air-in-cayman-islands/):* At a Cayman Islands cement terminal, rugged loading spouts and twin collectors cut spout failures and kept production steady despite salt air and tropical weather. --- ## Future Trends in Mining Dust Control - **Sustainability focus:** More operations recycle recovered fines back into the process. - **Cloud-based dashboards:** Remote visibility for performance and predictive alerts. - **Energy-efficient fans & VFDs:** Lower operating costs and carbon footprint. - **AI-powered maintenance:** Predict filter wear and schedule service before efficiency drops. --- ## FAQs on Mining Dust Control **Q: What’s the best dust collector for mining operations?** Baghouses, pulse jet collectors, and wet scrubbers each serve different stages. The best choice depends on dust load, temperature, and moisture. **Q: How does dust affect mining equipment?** Dust accelerates wear on bearings, seals, and conveyors—causing breakdowns and costly downtime. Proper capture extends equipment life. **Q: Can dust collection systems help meet MSHA compliance?** Yes. Modern collectors provide documented performance data that supports compliance with federal and state standards. **Q: Is it possible to recover lost material with dust control?** Absolutely. Many systems capture fines that can be reintroduced into the process, reducing waste and increasing yield. --- ## Partner with Sly for Mining Dust Solutions At Sly, we’ve spent more than 150 years designing dust control systems that balance safety, compliance, and efficiency. Our [mining solutions](https://www.slyinc.com/industries/mining-minerals/) are tailored to the unique demands of each site—from surface operations to underground shafts. Ready to cut downtime and improve air quality? **[Request a quote today](https://www.slyinc.com/contact/request-a-quote/)** and let us help you build a safer, cleaner, and more profitable mining operation. **Categories:** Dust Collection Equipment, industrial applications, Venturi, Wet Scrubber --- ### [Improving Air Quality in Biomass Energy Facilities](https://www.slyinc.com/blog/improving-air-quality-in-biomass-energy-facilities/) **Published:** November 3, 2025 **Author:** Al Moretti **Excerpt:** Biomass fuels vary in size, moisture, and consistency. Drying and handling create fine dust clouds, while combustion adds more particulates. Without capture, dust quickly overwhelms systems. **Content:** ## Blog Highlights - [Biomass energy](https://www.slyinc.com/products/dust-collectors/) creates more airborne emissions than other clean energy sources. - Dust and gas byproducts put workers, equipment, and compliance at risk. - Dust control systems improve air quality, reduce maintenance, and support sustainability. - Sly solutions include baghouses, wet scrubbers, and bulk material handling equipment. - Investing in modern dust collection prepares facilities for future regulations. --- ## Why Air Quality Matters in Biomass Plants Biomass plays a growing role in [renewable energy](https://www.slyinc.com/industries/biomass/) by converting organic waste into usable power. But compared to wind or solar, biomass creates more airborne emissions. Fine dust and gases from processing and combustion can: - Endanger worker health - Damage equipment - Increase compliance risk - Undermine sustainability goals Effective dust collection systems keep facilities safe, efficient, and profitable. ## Key Challenges in Biomass Dust Management ### Dust and Particulate Generation Biomass fuels vary in size, moisture, and consistency. Drying and handling create fine dust clouds, while combustion adds more particulates. Without capture, dust quickly overwhelms systems. ### Health and Environmental Risks Workers face respiratory problems from long-term exposure. Fugitive emissions can spread hazardous compounds into nearby soil, water, and communities. ### Operational Challenges Uncontrolled dust: - Wears down machines - Clogs ducts - Triggers shutdowns - Increases fire and explosion risks ### Meeting Stringent Regulations Local, state, and federal permits limit particulate and gas-phase emissions. Staying in compliance requires robust collection systems. ## Biomass Dust Control Solutions ### Advanced Dust Collection Equipment - **TubeJet Pulse Jet Collectors** – High-capacity dry dust collection. - **Venturi Wet Scrubbers** – Capture ultra-fine particulates and gases. - **Industrial Loading Spouts** – Contain dust during bulk transfers. ### Customizable Installations Every biomass plant is unique. Systems can be adapted to: - Different fuel types (wet, dry, pelletized) - Various production scales - Building layouts and operational needs ### Emission Management Our equipment keeps facilities under permit limits, improves combustion efficiency, and minimizes fugitive dust. ## Benefits of Biomass Dust Collection - **Improved Air Quality** – Cleaner indoor air protects workers and meets OSHA standards. - **Equipment Longevity** – Less abrasion and clogging extends system life. - **Sustainability Support** – Reduced emissions and better combustion efficiency. - **Cost Efficiency** – Lower maintenance, fewer breakdowns, and reduced fines. ## Future of Biomass Dust Control - **Smarter Systems** – Sensors and real-time monitoring boost efficiency and reduce energy use. - **Carbon-Neutral Integration** – Dust control will align with carbon capture and next-gen combustion technologies. - **Tighter Regulations** – Facilities adopting modern systems now avoid costly retrofits later. --- ## FAQs **Q: Why does biomass produce more dust than other renewables?** Because fuels like wood chips, pellets, and crop waste release fine particulates during handling and combustion. **Q: What happens if dust control is ignored?** Expect higher maintenance costs, safety hazards, and regulatory penalties. **Q: Which dust control system is best for biomass plants?** Baghouses and wet scrubbers are most effective, but the right solution depends on your plant’s size, fuel, and emissions profile. **Q: Can dust collection systems help with sustainability goals?** Yes. By capturing particulates, facilities lower emissions, improve combustion, and reduce their environmental footprint. **Q: How quickly do these systems pay off?** Savings on maintenance, downtime, and fines often allow ROI within a few years. --- ## Clean Air for Smarter Biomass Operations Biomass dust control isn’t just about compliance—it’s about safety, efficiency, and long-term success. With over 150 years of expertise, Sly delivers proven systems that keep your facility clean, compliant, and sustainable. **Ready to improve your air quality and protect your investment? [Request a quote today](https://www.slyinc.com/contact/request-a-quote/).** **Categories:** Biomass, Dust Collection Equipment, Venturi --- ### [From Fumes to Fresh Air: Understanding Wet Scrubber Technology](https://www.slyinc.com/blog/from-fumes-to-fresh-air-understanding-wet-scrubber-technology/) **Published:** February 16, 2026 **Author:** Al Moretti **Excerpt:** Why Industrial Facilities Rely on Wet Scrubber Systems Wet scrubber systems are industrial air pollution control devices that use liquid (typically water) to remove harmful pollutants from exhaust gas streams. **Content:** ## Why Industrial Facilities Rely on Wet Scrubber Systems **Wet scrubber systems** are industrial air pollution control devices that use liquid (typically water) to remove harmful pollutants from exhaust gas streams. Here’s what you need to know: **How Wet Scrubbers Work:** - Contaminated gas enters the scrubber vessel - Liquid is sprayed or contacted with the polluted gas stream - Pollutants are captured through impaction, absorption, or chemical reaction - Clean gas exits through the stack - Collected pollutants are removed with the liquid for disposal **Key Benefits:** - Remove both **particulate matter** (PM10, PM2.5) and **gaseous pollutants** (SO2, HCl, VOCs) - Achieve **90-99% removal efficiency** for most applications - Handle high-temperature gas streams (over 500°F) - Neutralize corrosive and combustible materials safely If you’re managing an industrial facility, you know the challenges: maintaining clean air, meeting environmental regulations, and maintaining operational efficiency. Wet scrubbers offer a proven solution that has controlled industrial emissions for decades. These systems work because they bring polluted gas into direct contact with a scrubbing liquid. The liquid captures harmful particles and absorbs soluble gases. It’s a simple principle, but the engineering behind it matters. Well-designed wet scrubbers achieve greater than 95% particulate-matter removal efficiency and over 90% gaseous-pollutant removal efficiency. The technology has evolved significantly. Modern wet scrubbers can handle everything from sticky food residues in processing plants to corrosive acid gases in chemical manufacturing. They’re compact compared with other pollution-control technologies and can treat multiple pollutants in a single system. This guide will walk you through how wet scrubbers work, the different types available, what pollutants they remove, and how to choose the right system for your facility. ![infographic showing wet scrubber process flow: dirty gas enters vessel, liquid spray contacts pollutants through absorption and impaction mechanisms, mist eliminator removes droplets, clean gas exits stack, contaminated liquid collected in sump for treatment or disposal - Wet scrubber systems infographic ](https://images.bannerbear.com/direct/4mGpW3zwpg0ZK0AxQw/requests/000/118/416/911/9BvRDJ724zWPnGMv6lAKNOd03/ba9b28d5c2e7402537e24b430ab728ee33df7a90.jpg "infographic showing wet scrubber process flow: dirty gas enters vessel, liquid spray contacts pollutants through absorption and impaction mechanisms, mist eliminator removes droplets, clean gas exits stack, contaminated liquid collected in sump for treatment or disposal - Wet scrubber systems infographic ") ## The Fundamentals: What is a Wet Scrubber and How Does It Work? At its core, a **wet scrubber system** is an air pollution control device that treats industrial exhaust gases by contacting them with a scrubbing liquid, typically water or a chemical solution. This contact enables the liquid to capture and neutralize harmful pollutants, preventing their release into the atmosphere. It’s a bit like giving your industrial exhaust a refreshing shower before it goes out into the world! The magic happens through a process called absorption for gases and various physical mechanisms for particles. When dirty gas enters the scrubber, it meets a fine spray of liquid or passes through a liquid pool or wetted packing material. Pollutants in the gas dissolve into the liquid or are physically trapped by the liquid droplets. The cleaned gas then exits the system, and the now-contaminated liquid is collected for treatment and disposal or recirculation. For a more in-depth look, check out our article, [What is a Wet Scrubber?](https://www.slyinc.com/blog/what-is-a-wet-scrubber/). ![simplified wet scrubber diagram showing gas in, liquid spray, and clean gas out - Wet scrubber systems](https://images.bannerbear.com/direct/4mGpW3zwpg0ZK0AxQw/requests/000/118/416/876/jMDOvP3KezRe20GyYlqoyk8AW/7522386d52fc7ec4f2657274e78d8e70ab85b72c.jpg "simplified wet scrubber diagram showing gas in, liquid spray, and clean gas out - Wet scrubber systems") ### Main Components of a Wet Scrubber While specific designs vary, most **wet scrubber systems** share several key components that work in harmony to clean the air: - **Inlet Ductwork:** This is where the dirty exhaust gas enters the scrubber vessel. - **Scrubbing Vessel (Chamber):** The main body of the scrubber where the gas and liquid come into contact. It can be a tower, a chamber, or a specialized contact zone. - **Liquid Spray Nozzles:** These create fine liquid droplets to maximize the surface area for gas-liquid contact. In some designs, liquid might flow over packing material instead. - **Packing Media (for Packed Towers):** Randomly or structured arranged materials that provide a large surface area for gas-liquid contact, enhancing absorption efficiency. - **Mist Eliminator (Entrainment Separator):** Located at the exit of the scrubbing vessel, this crucial component removes any liquid droplets that might have been carried over by the cleaned gas stream, ensuring only clean, dry gas exits. - **Pumps and Fans:** Pumps circulate the scrubbing liquid, while large industrial fans (often induced draft fans) pull the exhaust gas through the entire system. - **Liquid Handling System:** This includes a recirculation tank, chemical feed systems (if a reagent is used), and a blowdown system for removing spent scrubbing liquid. Each component plays a vital role in the overall efficiency and effectiveness of the **wet scrubber system**. To see a detailed breakdown of one common type, explore [The Anatomy of an Impinjet Wet Scrubber](https://www.slyinc.com/resources/videos/the-anatomy-of-an-impinjet-wet-scrubber/). ### The Scrubbing Process Explained The process within a wet scrubber is a carefully orchestrated sequence of events designed to maximize pollutant removal. It typically involves: 1. **Gas Flow:** Contaminated industrial exhaust gas is drawn into the scrubber. 2. **Liquid Introduction:** A scrubbing liquid (often water, sometimes with chemical additives) is introduced into the gas stream. This can be through sprays, bubbling, or flowing over packing material. 3. **Gas-Liquid Contact:** This is the heart of the process. Pollutants are transferred from the gas phase to the liquid phase through several mechanisms: - **Impaction:** Larger particulate matter physically collides with and is captured by liquid droplets. This is dominant for particles larger than 1.0 μm. - **Diffusion:** Very small particles (sub-micron, less than 0.1 μm) move randomly due to Brownian motion and diffuse into the liquid droplets. - **Interception:** Particles follow gas streamlines but, due to their size, come into contact with the liquid droplet’s surface. This is significant for particles between 0.1 and 1.0 μm. - **Chemical Reaction/Absorption:** Gaseous pollutants dissolve into the scrubbing liquid. If the liquid contains a reactive chemical (e.g., an alkaline solution for acid gases), a chemical reaction occurs, neutralizing the pollutant and permanently removing it from the gas stream. 4. **Separation:** After contact, the now-cleaned gas, carrying entrained liquid droplets, passes through a mist eliminator. This device removes the liquid droplets, preventing them from escaping with the cleaned gas. 5. **Liquid Recirculation/Disposal:** The spent scrubbing liquid, now containing the captured pollutants, collects in a sump. It may be partially recirculated after solids settle, or a portion (blowdown) may be sent for further treatment and proper disposal to maintain scrubber efficiency. This continuous cycle ensures that harmful substances are effectively removed from the air. For a quick reference, our [Pocket Guide: Wet Scrubber Basics](https://www.slyinc.com/blog/pocket-guide-wet-scrubber-basics/) offers a handy overview. ## A Guide to Different Types of Wet Scrubber Systems Just as there are many different types of industrial emissions, there are various types of **wet scrubber systems**, each engineered to excel at specific tasks. The choice of scrubber depends on the pollutant type (particulate, gaseous, or both), the desired removal efficiency, gas flow rates, temperature, and available footprint. While all wet scrubbers use liquid to clean gas, their internal designs and energy use can vary significantly. Some are designed as “high-energy” scrubbers for fine particulate, while others are “low-energy” for gaseous absorption. Understanding these differences is key to selecting the right solution for your air-pollution-control challenge. You can explore [The 3 Most Common Types of Wet Scrubbers](https://www.slyinc.com/blog/the-3-most-common-types-of-wet-scrubbers/) for a broader understanding. ### High-Energy Scrubbers for Particulate Matter When dealing with fine particulate matter, especially sub-micron particles, high-energy wet scrubbers are often the go-to solution. The most prominent example is the **Venturi Wet Scrubber**. A [Venturi Wet Scrubber](https://www.slyinc.com/products/industrial-wet-scrubbers/venturi-wet-scrubber/) works by accelerating the dirty gas stream to very high velocities (12,000 to 36,000 ft/min) through a constricted throat section. As the gas accelerates, scrubbing liquid is injected, shearing it into extremely fine droplets. The high-speed collisions between these tiny liquid droplets and fine particulate matter enable efficient capture. This process typically results in a significant pressure drop across the scrubber, which is why they are considered “high-energy” devices. Venturi scrubbers are particularly effective for: - Capturing fine dust, including PM10 and PM2.5. - Handling sticky dusts and residues that would clog dry filters. - Treating high-temperature gas streams. - Removing aerosols and oil mist. They are known for their high particulate-matter removal efficiency, often exceeding 95%. To learn more about their mechanics, dig into [How Does a Venturi Scrubber Work?](https://www.slyinc.com/blog/how-does-a-venturi-scrubber-work/). ### Wet Scrubbers for Gaseous Pollutants For removing gaseous pollutants, the focus shifts from high-velocity impaction to maximizing gas-liquid contact and chemical absorption. Several types of wet scrubbers excel in this area: - **Packed Tower Wet Scrubber:** These scrubbers feature a bed of specialized packing material that provides a large surface area for gas-liquid interaction. Dirty gas typically flows upward, while scrubbing liquid trickles downward over the packing, ensuring intimate countercurrent contact and efficient absorption. Packed towers are highly effective for soluble gases like SO2, HCl, and various VOCs. We offer robust [Packed Tower Wet Scrubber](https://www.slyinc.com/products/industrial-wet-scrubbers/packed-tower-wet-scrubber/) solutions, often achieving removal efficiencies in excess of 90 percent, depending on the pollutant. You can find more technical details in the [EPA Fact Sheet – Packed-Bed/Packed-Tower Wet Scrubber](http://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=P1008OGN.PDF). - **Impingement Wet Scrubber:** This design uses impingement plates or trays to generate turbulence and promote gas-liquid contact. Gas is forced through holes in the plates, bubbling through a liquid layer or impacting a wetted surface. This design is versatile and can handle both particulate and gaseous pollutants, offering excellent performance for a range of applications. Our [Impinjet Wet Scrubber](https://www.slyinc.com/products/industrial-wet-scrubbers/impinjet-wet-scrubber/) is a testament to this robust technology. - **Eductor Wet Scrubber:** Also known as jet venturi scrubbers, these devices use the energy of a high-velocity liquid stream to entrain and scrub the dirty gas. The liquid jet creates a vacuum, drawing in the gas and mixing them vigorously, leading to effective capture of both particles and soluble gases. Eductor scrubbers are particularly useful for applications with low gas flow rates or where a fan cannot be used. Learn more about our [Eductor Wet Scrubber](https://www.slyinc.com/products/industrial-wet-scrubbers/eductor-wet-scrubber/) offerings. ### Specialized Designs like FRP Scrubbers In many industrial settings, particularly in chemical plants and metal-finishing operations, the gases being treated are highly corrosive. This demands specialized construction materials that can withstand aggressive chemical attack. This is where [FRP Wet Scrubbers](https://www.slyinc.com/products/industrial-wet-scrubbers/frp-wet-scrubbers/) shine. Fiberglass Reinforced Plastic (FRP) is an ideal material for scrubber construction in corrosive environments due to its excellent chemical resistance and durability. FRP scrubbers are custom-designed to handle specific corrosive emissions, ensuring longevity and reliable performance where traditional metal scrubbers would quickly degrade. We use FRP for our [Corrosive Emissions FRP Wet Scrubbers](https://www.slyinc.com/resources/videos/corrosive-emissions-frp-wet-scrubbers/) to provide robust solutions. Industries such as metal finishing, semiconductor manufacturing, and chemical production frequently rely on FRP scrubbers to control hazardous gases, including hydrochloric acid (HCl), sulfuric acid (H2SO4), and other corrosive compounds. These systems not only protect the environment but also ensure the safety of plant personnel. For more insights into their application, read [Clearing the Air: How FRP Scrubbers Keep Chemical Plants Safe from Hazardous Gases](https://www.slyinc.com/blog/clearing-the-air-how-frp-scrubbers-keep-chemical-plants-safe-from-hazardous-gases/). ## Performance, Pollutants, and Practical Considerations Understanding the different types of **wet scrubber systems** is just the first step. To truly appreciate their value, we need to look at what they can achieve, their operational nuances, and the factors that influence their selection and cost. The performance of a wet scrubber is critical, and we constantly strive for maximum efficiency. Well-designed wet scrubbers can achieve high removal efficiencies—often exceeding 90% for pollutants and, in some cases, even 99% for specific applications. This level of performance is crucial for meeting stringent environmental regulations and maintaining clean air. For more on this, see [The Importance of Wet Scrubber Efficiency](https://www.slyinc.com/blog/the-importance-of-wet-scrubber-efficiency/). ### What Pollutants Can Wet Scrubbers Remove? **Wet scrubber systems** are incredibly versatile, capable of removing a wide array of pollutants from industrial exhaust streams. This dual-action capability—handling both particles and gases—makes them a powerful tool in air pollution control. Here’s a list of pollutants wet scrubbers can effectively remove: - **Particulate Matter (PM):** This includes both coarser particles (PM10) and fine particles (PM2.5), often achieving high efficiencies for particles down to 0.5 μm with sufficient energy input. Wet scrubbers capture relatively small dust particles with large liquid droplets. - **Acid Gases:** Highly soluble acid gases like Sulfur Dioxide (SO2), Hydrogen Chloride (HCl), Hydrogen Fluoride (HF), and Hydrogen Bromide (HBr) are readily absorbed and neutralized by alkaline scrubbing liquids. - **Volatile Organic Compounds (VOCs):** While some VOCs are challenging to remove, many are soluble in specific scrubbing liquids or can be chemically reacted to facilitate removal. - **Odors:** Many odorous compounds are gaseous and can be effectively removed through absorption and chemical reaction in a wet scrubber. - **Corrosive Gases:** Beyond acid gases, wet scrubbers can neutralize other corrosive gases, protecting downstream equipment and the environment. - **Other Chemical Vapors and Aerosols:** A broad range of other chemical emissions can be targeted depending on their solubility and reactivity with the chosen scrubbing liquid. Wet scrubbers can handle gas streams containing a mixture of these pollutants, providing a comprehensive solution for many industrial processes. For more details on particulate removal, refer to [What Particles Does a Wet Scrubber Remove?](https://www.slyinc.com/blog/what-particles-does-a-wet-scrubber-remove/). ### Advantages and Disadvantages of Wet Scrubber Systems Like any technology, **wet scrubber systems** have their own pros and cons. We believe in providing a clear picture so you can make an informed decision for your facility. | Advantages | Disadvantages | |---|---| | **High Efficiency:** Can achieve 90-99% removal for both particulate and gaseous pollutants. | **Wastewater Disposal:** Generates a wastewater stream (blowdown) that requires treatment and proper disposal, which can be costly. | | **Handles High Temperatures & Moisture:** Can cool hot, humid gas streams, simplifying upstream processes and handling conditions that dry systems cannot. | **Corrosion Potential:** The presence of water and absorbed chemicals can lead to corrosion issues if not properly managed with appropriate materials (e.g., FRP). | | **Removes Gases & Particles Simultaneously:** Unique capability to control both types of pollutants in a single system. | **Handles Combustible Dusts:** Safely wets combustible dusts to reduce explosion risk. | | **Compact Design:** Often smaller in footprint compared to other pollution control devices like baghouses or electrostatic precipitators. | **Energy Costs:** Can incur significant operating costs due to power consumption by fans and pumps, especially in high-energy designs. | | **Neutralizes Corrosive Gases:** Can use reactive liquids to neutralize acidic or corrosive gas components. | **Freezing Potential:** In cold climates, water lines and components can freeze if not properly insulated or heated. | | **Handles Combustible Dusts:** Safely wets combustible dusts, reducing explosion risks. | **Visible Plume:** Can produce a visible steam plume, especially in cold weather, which might raise aesthetic concerns. | | **Simple Operation:** Generally straightforward to operate once properly configured. | **Increased Humidity:** Adds moisture to the gas stream, which may require additional drying if downstream processes are sensitive to humidity. | While there are challenges, many of these can be mitigated through proper design, material selection, and a robust maintenance program. For a more detailed comparison, check out [What are the Advantages and Disadvantages of Using Wet Scrubbers?](https://www.slyinc.com/blog/what-are-the-advantages-and-disadvantages-of-using-wet-scrubbers/). ### Monitoring, Maintenance, and Cost Factors To ensure a **wet scrubber system** operates effectively and efficiently, consistent monitoring and maintenance are crucial. These factors also significantly influence the overall cost of ownership. **Monitoring Performance:** We recommend monitoring several key indicators to ensure optimal performance: - **Pressure Differential:** The pressure drop across the scrubber. A change can indicate plugging, changes in gas flow, or other operational issues. - **Liquid Flow Rate:** Monitoring the scrubbing liquid flow rate ensures adequate contact with the gas stream. - **pH Monitoring:** For acid gas removal, maintaining the correct pH of the scrubbing liquid is critical for neutralization and preventing corrosion. This can serve as a strong indicator of removal efficiency for such pollutants. - **Scrubber Liquid Outlet Concentration:** Directly measuring the pollutant concentration in the spent liquid helps assess removal efficiency. - **Gas Flow Rate and Temperature:** These factors influence scrubber design and performance, and changes can impact efficiency. The EPA provides extensive guidance on monitoring, noting that most absorbers have removal efficiencies in excess of 90 percent. Continuous monitoring helps maintain these high efficiencies and ensures compliance. You can find more details on monitoring techniques in the [Monitoring by Control Technique – Wet Scrubber For Gaseous Control](https://www.epa.gov/air-emissions-monitoring-knowledge-base/monitoring-control-technique-wet-scrubber-gaseous-control) document. **Maintenance:** Regular maintenance is essential to prevent operational issues such as freezing, scaling, and plugging. This includes: - Inspecting and cleaning nozzles to ensure proper spray patterns. - Checking packing material for buildup or damage. - Maintaining pumps and fans. - Managing the scrubbing liquid system, including blowdown and chemical additions. **Cost Factors:** The cost of **wet scrubber systems** involves both initial capital investment and ongoing operating costs. - **Capital Cost:** This varies widely based on factors like gas volume, pollutant type and concentration, required removal efficiency, and materials of construction. While initial costs can be substantial, they often represent a lower investment than some dry systems. - **Operating Costs:** These include utilities (electricity for fans and pumps; water use), chemical reagents (if used), labor for operation and maintenance, and waste-disposal costs for spent scrubbing liquid or sludge. For example, electricity for fans can be a significant portion of operating costs. We help our clients conduct a thorough cost-benefit analysis to determine the feasibility and economic advantages of a wet scrubber for their specific operation. To understand the financial aspects better, read [How to Determine Wet Scrubber Costs for Your Next System Design](https://www.slyinc.com/blog/how-to-determine-wet-scrubber-costs-for-your-next-system-design/). ## Frequently Asked Questions about Wet Scrubbers We often hear similar questions from industrial facility managers and engineers considering **wet scrubber systems**. Let’s address some of the most common ones. ### What industries commonly use wet scrubbers? **Wet scrubber systems** are indispensable across a broad spectrum of industries due to their versatility and effectiveness in controlling diverse pollutants. We’ve seen them deployed in many applications, helping facilities meet environmental standards and improve air quality. Here are some of the industries that commonly rely on wet scrubbers: - **Power Generation:** Especially coal-fired power plants, for flue gas desulfurization (FGD) to remove SO2. - **Chemical Manufacturing:** To neutralize and remove acid gases (HCl, HF, SOx) and other corrosive or hazardous chemical vapors. - **Metal Refining and Processing:** For capturing particulate matter, fumes, and acid gases from smelting, pickling, and other metal treatment processes. - **Food Processing:** To control odors, sticky particulate, and VOCs from cooking, drying, and other food production activities. - **Mining:** For dust control in various mining operations, particularly where the dust is combustible or wet handling is preferred. - **Pharmaceuticals:** To control odors and VOCs from drug manufacturing processes, ensuring product purity and environmental compliance. - **Waste Treatment:** In wastewater treatment plants and incinerators, for odor control and removal of various gaseous pollutants and particulates. - **Pulp and Paper:** For controlling odors and sulfur compounds from various processes. Our [Industries](https://www.slyinc.com/industries/) page provides more examples of where our solutions make a difference. ### Do wet scrubbers remove NOx emissions? This is a frequently asked question, and it’s important to clarify: **wet scrubber systems** are generally *not* designed to directly remove nitrogen oxides (NOx) with high efficiency. NOx compounds (such as nitric oxide, NO, and nitrogen dioxide, NO2) are less soluble in water and common scrubbing liquids, making them challenging to capture via simple absorption. However, this doesn’t mean NOx goes uncontrolled. For effective NOx removal, specialized technologies are typically employed in conjunction with wet scrubbers: - **Selective Catalytic Reduction (SCR):** This technology injects ammonia or urea into the exhaust gas stream upstream of a catalyst. The catalyst facilitates a chemical reaction that converts NOx into harmless nitrogen and water. - **Selective Non-Catalytic Reduction (SNCR):** Similar to SCR, SNCR injects a reagent into the exhaust gas but relies on higher temperatures (without a catalyst) to achieve NOx reduction. While wet scrubbers may not directly target NOx, they often play a crucial role in a comprehensive air pollution control strategy. They can remove other pollutants (such as particulate matter and SO2) that could interfere with SCR/SNCR systems, producing a cleaner gas stream for optimal NOx reduction. This system integration ensures that facilities can meet all emission limits for various pollutants. ### What are the key considerations when selecting a wet scrubber? Choosing the right **wet scrubber system** is a critical decision that impacts both environmental compliance and operational efficiency. We always emphasize a thorough evaluation of your specific application. Here are the key considerations we guide our clients through: - **Pollutant Characteristics:** What specific pollutants (particulate type and size, gas type, solubility, reactivity) are present in your exhaust stream? Are they sticky, corrosive, or combustible? - **Gas Flow Rate:** The volume of exhaust gas to be treated directly influences the scrubber’s size and design. - **Temperature and Humidity:** High temperatures and high moisture content can influence material selection and require pre-cooling (quenching), but are generally well managed by wet systems. - **Required Efficiency:** What are the regulatory limits for each pollutant? This dictates the necessary removal efficiency and, consequently, the scrubber design and energy input. - **Footprint and Space Constraints:** Available space at your facility can determine whether a vertical packed tower, a more compact venturi, or a horizontal unit is most suitable. - **Operating Costs:** Consider the ongoing costs of water, chemicals, electricity, and waste disposal. - **Maintenance Requirements:** Different scrubber types have varying maintenance needs. - **Materials of Construction:** For corrosive gases, materials like FRP are essential for longevity and safety. - **Waste Management:** How will the collected liquid or sludge be treated and disposed of? - **Multi-Pollutant Control:** If you have both particulate and gaseous pollutants, a single wet scrubber or a multi-stage system might be the most effective solution. By carefully evaluating these factors, we can custom-design a **wet scrubber system** that provides reliable, no-compromise solutions for the cleanest air possible. For more guidance, our article [Which Wet Scrubber is Right for My Application?](https://www.slyinc.com/blog/which-wet-scrubber-is-right-for-my-application/) offers valuable insights. ## Conclusion **Wet scrubber systems** are a cornerstone of modern industrial air pollution control, offering robust and versatile solutions for a wide range of emission challenges. From capturing fine particulate matter to neutralizing corrosive acid gases and managing odors, their ability to handle diverse pollutants and challenging gas stream conditions makes them invaluable. We’ve explored how these systems work, their fundamental components, and the various types available, from high-energy Venturi scrubbers for fine particles to packed towers and FRP designs for gaseous and corrosive emissions. We’ve also highlighted their significant advantages, such as high removal efficiencies and suitability for high-temperature and moist environments, while acknowledging considerations like wastewater management and energy costs. At Sly, LLC, we understand that every industrial application is unique. That’s why we pride ourselves on designing and manufacturing custom, high-quality **wet scrubber systems** that deliver reliable, no-compromise solutions. Our expertise ensures that you not only meet environmental compliance but also achieve optimal operational efficiency and air quality. Whether you’re battling stubborn particulates, hazardous gases, or a complex mix of pollutants, we are here to help you evaluate options and implement a system that brings fresh air back to your facility. [Explore our full range of Industrial Wet Scrubbers](https://www.slyinc.com/products/industrial-wet-scrubbers/) to find how we can tailor a solution for your specific needs. **Categories:** Wet Scrubber --- ### [Dry Filter Systems for All Applications](https://www.slyinc.com/blog/dry-filter-systems-for-all-applications/) **Published:** April 24, 2014 **Author:** Al Moretti **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/11/pleatjet-retrofit.jpg "pleatjet-retrofit | Sly Air Pollution Control") **Blog Highlights** - Explore four types of dry dust collection systems: Pulse Jet, Cartridge, Pulse Clean, and Shaker. - Understand which dust collector fits your temperature, pressure, and air quality requirements. - Learn how Sly’s easy-maintenance designs reduce downtime and extend system performance. - Discover options with explosion protection, custom configurations, and energy efficiency. - See why Sly is a trusted name in industrial dust collection for over 150 years. --- ## **Choosing the Right Dry Filter System** Every facility faces different air quality challenges. From fine particulate to high-temperature exhaust, the right dry filter system helps protect your workers, your equipment, and your compliance record. Sly Inc. designs and manufactures a range of baghouse and cartridge collectors engineered for reliability and easy maintenance. ### **Pulse Jet Collectors** **Best for:** High-performance, continuous-duty operations. Sly’s **TubeJet Pulse Jet Collectors** are our most versatile dry filter systems. They’re built for high vacuum applications and environments involving extreme heat, pressure, or corrosive materials. **Key Benefits:** - Tool-free bag changes for fast maintenance - Explosion protection for added safety - Custom hopper configurations and temperature sensors - Internal polishing for cleaner operation and longer system life Each unit comes standard with timers, air headers, and pulse valves, making it simple to install and even simpler to maintain. ### **[Cartridge Filter Collectors](https://www.slyinc.com/products/dust-collectors/vertical-cartridge-filter-collectors/)** **Best for:** Fine particulate filtration and energy efficiency. The **PleatJet II Horizontal Dust Collector** uses advanced **Opti-Pulse Cartridge Cleaning** technology for more complete dust release than conventional systems. Maintenance is completely tool-free with quick-release doors, and multiple configurations make it adaptable across industries. **Why choose this system:** - Uniform dust release improves performance - Compact design saves space - Lower energy consumption reduces costs over time ### **Pulse Clean Collectors** **Best for:** Compact pollution control with high dust volumes. The **Envelope Filter Collector** doubles dust-handling capacity compared to tubular bags while maintaining efficient energy use. Longer bag life and straightforward installation make it a dependable solution for demanding environments. ### **Shaker Collectors** **Best for:** Intermittent exhaust systems or smaller operations. Shaker dust collectors offer a simple, low-maintenance option for facilities that don’t run continuous exhaust. With low filtering velocity, they extend bag life and require only brief interruptions for dust removal. **Ideal for:** - Airflow needs up to 4,000 CFM - Operating temperatures below 275°F - Facilities seeking economical, space-saving options Automatic timers can be added to streamline shaking cycles and reduce manual oversight. --- ## **Frequently Asked Questions** **1. What is the difference between a baghouse and a cartridge dust collector?** Baghouses use filter bags for larger volumes of dust, while cartridge collectors handle finer particulate and offer compact, energy-efficient performance. **2. How often do I need to replace filter bags or cartridges?** That depends on the dust type and system load, but Sly designs systems for easy, tool-free replacement to minimize downtime. **3. Can dry filter systems handle explosive dust?** Yes. Sly offers explosion protection features on systems like the TubeJet Pulse Jet to ensure compliance and worker safety. **4. What’s the best system for high-temperature applications?** Pulse Jet Collectors are built to withstand extreme temperatures while maintaining reliable filtration. **5. How do I know which system is right for my facility?** Our engineering team will evaluate your material type, temperature, air volume, and regulatory requirements to match you with the most efficient system. --- ## **Cleaner Air Starts with Sly** Sly Inc. has been innovating dust collection technology for more than 150 years. Our dry filter systems are trusted across industries for reliability, safety, and ease of maintenance. **Ready to improve air quality and system efficiency?** [Request a quote](https://www.slyinc.com/contact/request-a-quote/) or speak with one of our experts to find the right dry filter system for your operation. [Learn About Replacement Parts](https://www.slyinc.com/replacement-parts/) Last updated: October 2025 **Categories:** Dry Filter Systems --- ### [Wet vs. Dry Systems: Which Is Best for Your Air Pollution Control Challenge?](https://www.slyinc.com/blog/wet-vs-dry-systems-which-is-best-for-your-air-pollution-control-challenge/) **Published:** January 9, 2019 **Author:** Al Moretti **Content:** Air pollution control systems fall into two main categories: wet scrubbers and dry dust collectors (including both baghouses and cartridge collectors). Each type has its place, but determining which is best for a particular application does require careful consideration. ## Wet Scrubber Advantages and Disadvantages ![Venturi Wet Scrubber](https://www.slyinc.com/wp-content/uploads/2024/08/Venturi-Wet-Scrubber.png)Nowhere are [wet scrubbers](https://www.slyinc.com/products/wet-scrubbers/) more necessary than in environments with combustible dust. A combustible dust is a solid material composed of distinct particles or pieces less than 500 microns in size that presents a fire or deflagration hazard when suspended in air or some other oxidizing medium over a range of concentrations. Dust from foods, plant matter, metals, fuels, plastics, dyes and many other materials can be explosive when combined with other environmental conditions. For example, in food production, processes such as grinding, transferring or mixing ingredients can produce massive quantities of suspended particles. Electrical devices or processes that can produce sparks or heat can trigger an explosion, especially in areas where poor housekeeping practices have allowed dust to accumulate. Wet scrubbers use water to remove dust from air, which reduces the heat source and dust cloud; they also eliminate the dust dispersion that is essential for combustion by aggregating dust particles within water droplets. Three different types of wet scrubbers are commonly used in industrial settings: - **[Impinjet® wet scrubber.](https://www.slyinc.com/products/wet-scrubbers/impingement-wet-gas-scrubber/)** These collect particulates and clean, cool and absorb vapors and gases. They offer high collection efficiencies (99% for particles 5 microns or larger) with low water consumption and minimum pressure drop. Impinjet scrubbers are highly resistant to fouling and available with capacities as high as 200,000+ CFM. - [**Venturi scrubbers.**](https://www.slyinc.com/products/wet-scrubbers/venturi-wet-scrubber/) These collect fine particulates and mists. They use the differential between high velocity gases and free-flowing water to create fine droplets that can entrap contaminants and hold them in suspension. Venturi scrubbers are capable of removing very small particles. They can be coupled with impingement plate scrubbers for even higher efficiency. - [**Eductor scrubbers.**](https://www.slyinc.com/products/wet-scrubbers/eductor-wet-scrubber/) These are designed to remove both soluble gases and particulates by inducing a gas flow using high-pressure liquid focused into a Venturi throat. This eliminates the need for a separate exhaust fan or blower to transport the contaminant-laden airstream to the filtration device. Eductor scrubbers can also be used for direct-contact condensation. As versatile as wet scrubbers are, there are some applications for which they are not appropriate. For example, some dusts are water reactive, which means they may become more hazardous, or remain hazardous, when mixed with water. Also, for processes that produce both gas and dust, some types of scrubbers can’t handle the whole job because they only remove gas. ## Dry Dust Collectors ![baghouse](https://www.slyinc.com/wp-content/uploads/2024/08/baghouse-1.jpg)A [baghouse](https://www.slyinc.com/products/dust-collectors/) is designed to filter particulates out of air or gas. Dust-laden gas or air enters the baghouse and is drawn through the bags. A layer of dust accumulates on the filter media surface until air can no longer move through it. When a sufficient pressure drop occurs, the cleaning process begins. Baghouses came into widespread use in the late 1970s after the development of filter fabrics capable of standing up to temperatures higher than 350°F. They typically offer a particulate collection efficiency of 99% or better, even with very small particle sizes. As the name suggests, [*cartridge* collectors](https://www.slyinc.com/products/dust-collectors/cartridge-filter-collectors/) employ high-efficiency filter media cartridges. They are an ideal choice for many applications where the dust is dry and flows freely. Typically, dust-laden air enters the collector through a baffled inlet and is collected on the filter media. Periodic bursts of compressed air dislodge the dust from the filters and into a hopper. From the hopper, the dust is discharged into a separate storage drum or other container that must be emptied regularly to ensure that dust does not back up into the hopper. Baghouses and cartridge collectors are used successfully in a broad array of environments and industries for a wide range of dusts and gases. Their suitability for a particular application is largely dependent on the filter media chosen. However, in applications with significant moisture in the gas stream, dry collectors will tend to plug up and the filters will clog. For applications involving combustible dusts, if a wet scrubber can’t be used, baghouses and cartridge filters can be equipped with explosion vents and suppression systems to reduce the likelihood of an explosion. ## Example Applications Recently, a company that recycles spent petroleum and chemical refining catalysts was encountering problems with the packed tower style scrubber they were using to clean flue gas from its ovens. The company thermally oxides carbon and sulfur from the used catalysts, which creates sulfur dioxide (SO2) and particulates, primarily carbon. Previously, the company had relied on a packed tower style scrubber to clean the flue gas. Unfortunately, the packed tower began tending to channel (i.e., flow in little streams straight through the packing without wetting the packing surface), as well as failing to collect the particulates. That’s when they came to Sly for advice, who recommended an Impinjet® gas scrubber. Its proven impingement design creates turbulent conditions to ensure close contact between the gas contaminants and the scrubbing solution, allowing for efficient removal of both particulates and SO2. A manufacturer of rubber rollers was experiencing frequent fires in the baghouse they used to collect rubber dust because their grinding process was generating sparks. Sly advised them to install a TubeJet® baghouse dust collector instead because it employs a high side inlet. This accommodates a cyclone pre-cleaner without extensive additional ductwork or the need to enlarge the system’s footprint. The cyclone reduced the chance of sparks entering the baghouse, reducing the chances for fire and improving overall safety. At Sly, we work in partnership with our customers to determine the optimal solution for their pollution control application. To learn more about how to choose the right option for your operation, download your copy of [Using Wet Scrubbers for Combustible Dust Control](https://info.slyinc.com/guide-using-wet-scrubbers-for-combustible-dust-control-1). If you need further advice on choosing between wet and dry dust collection systems, [contact us](https://www.slyinc.com/contact/) or [request a quote](https://www.slyinc.com/contact/request-a-quote/). [Contact Us](https://www.slyinc.com/contact/) [Baghouse](https://www.slyinc.com/blog/category/baghouse/), [Dry Dust Collector](https://www.slyinc.com/blog/category/dry-dust-collector/), [Venturi](https://www.slyinc.com/blog/category/venturi/), [Wet Scrubber](https://www.slyinc.com/blog/category/wet-scrubber/) **Categories:** Baghouse, Dry Dust Collector, Venturi, Wet Scrubber --- ### [Which Dry Dust Collector is Best for My Application?](https://www.slyinc.com/blog/which-dry-dust-collector-is-best-for-my-application/) **Published:** June 8, 2021 **Author:** Al Moretti **Content:** You need a [dust collector](https://www.slyinc.com/products/dust-collectors/). The question is, which one? Only by picking the right kind of dust collector and customizing it to fit your needs can you maximize your system’s performance and dust collection efficiency while extending the life of your collector.  [ ![Dry Dust Collector Fact Sheet](https://www.slyinc.com/wp-content/uploads/2024/08/SLY_dust-flyer.png)](https://www.slyinc.com/wp-content/uploads/2026/02/Dry_Dust_Collectors_Web.pdf) Dry dust collectors are a great choice for a highly efficient air quality control solution. Baghouses and cartridge collectors are used for dry particulate with light or heavy dust loadings, and they come in a variety of models and designs to help you find the perfect fit for your application. Look at our Dry Dust Collector Fact Sheet to see if a dry dust collector is the right choice for your facility. Sly’s dust control experts created this quick, one-page fact sheet to help you determine which type of dry dust collector is best suited to help you optimize your air quality control. To learn more, use our quick online form to [request a quote today](https://www.slyinc.com/contact/request-a-quote/) from one of our dust collection experts. [Contact Us](https://www.slyinc.com/contact/) [Dry Dust Collector](https://www.slyinc.com/blog/category/dry-dust-collector/), [Dust Collection Equipment](https://www.slyinc.com/blog/category/dust-collection-equipment/), [Dust Collection System](https://www.slyinc.com/blog/category/dust-collection-system/), [Dust Collector](https://www.slyinc.com/blog/category/dust-collector/) **Categories:** Dry Dust Collector, Dust Collection Equipment, Dust Collection System, Dust Collector --- ### [Dry vs. Wet: The Dust Collection Match-up](https://www.slyinc.com/blog/dry-vs-wet-the-dust-collection-match-up/) **Published:** August 5, 2021 **Author:** Al Moretti **Content:** If you’re creating dust, you need a dust collector. Period. In the fight for better air quality control, you have two main choices of equipment: dry dust collectors and wet scrubbers. Both lead to safer work environments, better regulatory compliance, and higher-quality products by helping you get rid of harmful dust and pollutants throughout your facility. With all of this at stake, you must choose the right piece of equipment.[![SLY-WetDryInfographic](https://www.slyinc.com/wp-content/uploads/2024/08/SLY-WetDryInfographic.jpg)](https://www.brandcepts.com/sly/DryWet/) ## Dry vs Wet Dust Collection Since both dry collectors and wet scrubbers have inherent advantages and disadvantages associated with their design, how do you choose the right one? The team at Sly is here to help. With our nearly 150 years of experience in the air quality control industry, we know what works and what doesn’t for each application. That’s why we’ve come up with this helpful checklist to help guide you to the right solution based on what kind of dust you’re dealing with. [Check out this animated infographic on the match-up between dry collectors and wet scrubbers.](https://www.brandcepts.com/sly/DryWet/) #### Call To Action [Contact Us](#) [Dry Dust Collector](https://www.slyinc.com/blog/category/dry-dust-collector/), [Wet Scrubber](https://www.slyinc.com/blog/category/wet-scrubber/) **Categories:** Dry Dust Collector, Wet Scrubber --- ### [What You Need to Know About Venturis and Dust Collection](https://www.slyinc.com/blog/what-you-need-to-know-about-venturis-and-dust-collection/) **Published:** November 16, 2017 **Author:** p1ws **Content:** You’ve probably heard of a venturi, but do you know what it actually is or how it relates to dust collection? Let’s start with the basics. The [Mirriam-Webster dictionary defines “venturi”](https://www.merriam-webster.com/dictionary/venturi) as: *A short tube with a tapering constriction in the middle that causes an increase in the velocity of flow of a fluid and a corresponding decrease in fluid pressure and that is used especially in measuring fluid flow or for creating a suction (as for driving aircraft instruments or drawing fuel into the flow stream of a carburetor.)* ![Venturi action.jpg](https://www.slyinc.com/wp-content/uploads/2024/08/Venturi-action.jpg) ## Why Do You Need a Venturi? In short, in dry powder dust collectors the venturi creates a secondary airflow to amplify the pulse cleaning of the filter bags. A venturi is economical when you have longer filter bags or a large number of filter bags in a row and more cleaning air is required. Compressed air is typically the costliest utility in the operation of a dust collection system. The venturi acts like an eductor to create the secondary air flow that is coupled to the compressed air pulse to enhance the amount of cleaning air for removal of a dust cake from the filter bags. Without the venturi, the volume of cleaning air may be insufficient for the amount of filter media that needs to be cleaned. A typical baghouse operates at an air-to-cloth ratio between 3:1 and 6:1. This means that it filters between three to six cubic feet of air per minute through every square foot of filter media. The air-to-cloth ratio is selected based on the process conditions, including dust type, dust loading, and particle sizes, and its selection is typically driven by past experience. For proper filter media cleaning, more air must be pushed backwards through the filter than is pulled in through the media.  That is, we need to “back pulse” with four to seven CFM per square foot just to push the collected dust off the filter surface. This typically requires more air than just the compressed air pulse. The secondary airflow helps achieve this. ## Converging-Diverging Venturi In addition to creating the secondary air flow, a venturi helps air reach farther down the filter bag when longer bags are used. The venturi’s “converging-diverging” nozzle accomplishes this. The venturi consists of a converging section, the venturi throat and the diverging section. This design converts pulse pressure into flow at the throat and then creates pressure regain in the diverging section so the compressed air is not lost exiting the venturi.  A proper venturi includes both the converging and diverging sections, and is not a simple funnel shape. Flow leaving the holes in the air distribution pulse pipes above the venturis is limited by physics to sonic velocity.  Passing the pulse of compressed air through a converging-diverging venturi achieves a supersonic, accelerated airflow to help project the pulse further down the filter bag. Overall, there is some debate in the industry over the value of a venturi, and some manufacturers skip using a venturi. Sly’s experts believe in the value of a venturi and it is an integral part of all Sly baghouse dust collectors. If you’re having trouble getting your filter bags clean enough, re-working your cleaning system to include venturis may be the right solution for you. [Contact us](https://www.slyinc.com/contact/) or [request a quote](https://www.slyinc.com/contact/request-a-quote/) and we’ll design the right system for your application. We have more than 143 years of dust collection experience and expertise. [Request a Quote](https://www.slyinc.com/contact/request-a-quote/) [Dust Collection System](https://www.slyinc.com/blog/category/dust-collection-system/), [Venturi](https://www.slyinc.com/blog/category/venturi/) **Categories:** Dust Collection System, Venturi --- ### [Which Wet Scrubber is Right for my Application?](https://www.slyinc.com/blog/which-wet-scrubber-is-right-for-my-application/) **Published:** April 26, 2021 **Author:** p1ws **Content:** Are you considering using a wet scrubber to improve your facility’s air quality control? With high collection efficiencies, explosion risk mitigation, and the ability to remove both dust and gases/vapors in one system, wet scrubbers are great for a variety of industrial applications. Paring the perfect wet scrubber to the right application can lead to collection efficiencies of over 99.99% in certain instances. To see if a wet scrubber is right for your application, look at our Wet Scrubber Fact Sheet below. This quick, one-page fact sheet will help you determine if a wet scrubber is right for you, and which type of [wet scrubber](https://www.slyinc.com/products/wet-scrubbers/) is best suited to handle your dust management needs. ![SLY_WetScrubber_FactSheet](https://www.slyinc.com/wp-content/uploads/2024/08/SLY_WetScrubber_FactSheet.jpg) For more information, [request a quick online quote](https://www.slyinc.com/contact/request-a-quote/) today from our wet scrubber experts. [Contact Us](https://www.slyinc.com/contact/) [Wet Scrubber](https://www.slyinc.com/blog/category/wet-scrubber/) **Categories:** Wet Scrubber --- ### [Venturi Scrubber: Enhancing Air Quality in Industrial Environments](https://www.slyinc.com/blog/venturi-scrubber-enhancing-air-quality-in-industrial-environments/) **Published:** April 11, 2025 **Author:** sitemanager@wpmanager.io **Content:** [Clean air in industrial settings ](/industries/)is more than just a regulatory checkbox—it’s essential for sustainability and worker health. At Sly, our venturi scrubbers are revolutionizing air quality control. These systems efficiently capture and remove harmful pollutants from exhaust streams, ensuring cleaner emissions. With their cutting-edge design and flexibility, venturi scrubbers are setting new standards for how industries tackle air pollution. ## **Understanding Venturi Scrubbers** A venturi scrubber is an effective tool for enhancing air quality by removing pollutants from industrial exhaust gases. These scrubbers work by accelerating contaminated gas streams into a scrubbing liquid, generally water. This interaction forms tiny droplets that trap and carry away hazardous particles, resulting in cleaner emissions. ## **Features of Our Venturi Scrubber** Our venturi scrubbers are designed for efficiency and flexibility. They offer adjustable throats for optimized performance and can handle high temperatures and corrosive applications. The units are capable of managing capacities up to 76,000 CFM per unit, making them suitable for a variety of industrial operations. Our design includes a non-plugging scrubbing liquid introduction system, an abrasion-resistant flooded elbow, and a cyclonic separator to remove mist effectively. These features contribute to the reliability and longevity of our scrubbers, minimizing maintenance needs and operating costs. ## **Benefits of Implementing Venturi Scrubbers** Venturi scrubbers offer numerous advantages for enhancing air quality and fostering sustainability in industrial settings. These systems help industries improve compliance and safety while conserving resources. - **Air Quality Improvement**: Capture a wide range of pollutants for cleaner emissions. - **Regulatory Compliance**: Meet stringent environmental standards. - **Safety Enhancement**: Create a safer workplace by removing hazardous particles. - **Cost Reduction**: Recycle scrubbing liquid for lower operational expenses. - **Material Recovery**: Reclaim valuable components from gas streams. By incorporating venturi scrubbers, industries minimize environmental impact, making these systems essential for modern operations. ## **Applications of Venturi Scrubbers** Venturi scrubbers have a broad range of applications due to their adaptability and efficiency. They are employed in metalworking, chemical processing, and power generation industries. These scrubbers are adept at removing fine particulates and liquid mists from process emissions, ensuring compliance with emissions standards. ## **Enhancing Industrial Sustainability** By incorporating venturi scrubbers, companies can significantly reduce their environmental footprint. Our systems help industries meet rigorous air quality regulations while also promoting sustainability. For those interested in implementing [venturi scrubbers](https://www.slyinc.com/products/wet-scrubbers/venturi-wet-scrubber/), we offer custom designs to fit specific industrial requirements. This ensures that each system is tailored to maximize efficiency and effectiveness in its designated application. ## **Taking the Next Step in Air Quality Improvement** To see our venturi scrubbers in action and understand their impact, explore our [case studies](https://www.slyinc.com/resources/case-studies/). If you’re ready to enhance your air pollution control measures, we encourage you to [request a quote](https://www.slyinc.com/contact/request-a-quote/). Together, let’s take a decisive step towards cleaner air and a healthier environment. **Categories:** industrial applications, Industrial Dust Collector --- ### [Strategies for Effective Dust Control Systems in Industrial Environments](https://www.slyinc.com/blog/strategies-for-effective-dust-control-systems-in-industrial-environments/) **Published:** August 6, 2025 **Author:** p1ws **Content:** Dust control isn’t just a regulatory checkbox—it’s essential for your industrial operations’ safety, productivity, and sustainability. Airborne particles can lead to equipment failures, health risks, and environmental violations without the right dust control system. But with the right strategy, you can protect your workers, stay compliant, and maintain efficiency. ## **Understanding the Importance of Dust Control** Effective dust control systems increase the safety and efficiency of industrial environments. Without proper measures, airborne dust can lead to serious health risks, from respiratory issues to long-term occupational diseases. Dust buildup also poses fire and explosion hazards, particularly in industries that use combustible materials. Beyond safety concerns, uncontrolled dust can reduce productivity, contaminate products, and violate environmental regulations. By investing in a reliable dust control system, your facility can safeguard workers, maintain regulatory compliance, and optimize operations. ## **Key Considerations for Selecting a Dust Control System** Choosing the right dust control system for your facility provides clean air, worker safety, and regulatory compliance. There’s no one-size-fits-all approach, as each industrial setting presents its unique challenges. Here are several key factors you should consider: - **Type of Dust**: The first step is to understand the characteristics of the dust generated in your process. Is it fine or coarse? Combustible or non-combustible? Knowing the properties helps select the correct filtration method. - **Airflow Requirements**: How much air needs to be processed? - **Operating Conditions**: Consider your facility’s temperature, humidity, and pressure levels. High heat or moisture can affect the performance and lifespan of dust collectors. - **Space Constraints**: Limited headroom or tight spaces may favor compact systems, while larger facilities might accommodate more expansive equipment. - **Energy Efficiency**: Some systems offer energy-saving options using low-pressure reverse air to clean filter bags. By carefully evaluating these factors, you can select a system that will handle your dust control needs while promoting environmental stewardship and operational efficiency. ## **Types of Industrial Dust Collection Systems** Choosing the right dust collection system depends significantly on the specific dust your facility generates and the operational environment. Dust control systems fall into two categories: dry dust collectors and wet scrubbers. ### **Dry Dust Collectors** [Dry dust collectors](https://www.slyinc.com/products/dust-collectors/) are ideal for managing dry, delicate particulate matter in industries where dust is generated from chemical handling, welding, or metalworking. This category includes various models designed for different capacities and conditions: - **Baghouses (Pulse Jet Collectors)**: Known for their efficiency, pulse jet collectors like [Sly’s TubeJet systems](https://www.slyinc.com/products/dust-collectors/pulse-jet-collectors/) handle large volumes of dust with continuous online cleaning. These systems use bursts of compressed air to blow collected dust off bags, keeping airflow consistent. They are perfect for high-temperature applications and can handle pressures up to 80″ w.g. - **Cartridge Dust Collectors**: [Cartridge collectors](https://www.slyinc.com/products/dust-collectors/cartridge-filter-collectors/) offer a compact solution for industries with limited space or low ceilings. Brands like Sly’s PleatJet models utilize vertical or horizontal cartridges that are easy to maintain, making them great for processes like dry powder handling or plasma cutting. - **Reverse Air Collectors**: Designed to save energy, [these systems](https://www.slyinc.com/products/dust-collectors/reverse-air-collector/) clean bags with low-pressure reverse air instead of compressed air. They’re particularly helpful in facilities where compressed air quality is a concern. Each type of dry dust collector caters to a different need, but shares a common goal: keeping fine particulates under control while optimizing the work environment. ### **Wet Scrubbers** On the other hand, [wet scrubbers](https://www.slyinc.com/products/wet-scrubbers/) use liquid—typically water—to capture and neutralize airborne contaminants. These systems are effective in applications where moisture-laden, high-temperature, or sticky particulates are present. Wet scrubbers are often employed in industries dealing with hazardous fumes or gases, such as the chemical, oil, and gas sectors. Here are some common types: - **Impinjet® Scrubbers**: Designed to collect particles 5 microns or larger while absorbing vapors and chemicals, [these scrubbers](https://www.slyinc.com/products/wet-scrubbers/impingement-wet-gas-scrubber/) offer 99% removal efficiency. A bonus? With no moving parts, maintenance demands are minimal. - **Venturi Scrubbers**: [These systems](https://www.slyinc.com/products/wet-scrubbers/venturi-wet-scrubber/) use a high-velocity gas stream to atomize scrubbing liquid into fine droplets. The result is the efficient capture of ultra-fine particulates and liquid mists, ideal for highly polluted process gas streams. Both dry dust collectors and wet scrubbers have strengths. Depending on your industry’s specific requirements, one system may be more advantageous. ## **Enhancing Efficiency with Modern Dust Control Solutions** Effective dust control systems help maintain worker safety, ensure compliance, and boost operational efficiency in industrial environments. Whether you need the precision of a dry dust collector or the versatility of a wet scrubber, selecting the right system can significantly improve your facility’s performance. With advancements in filtration technology and energy-saving designs, modern solutions provide better dust capture and long-term reliability. Ready to upgrade or install a new system? Consider [requesting a quote](https://www.slyinc.com/contact/request-a-quote/) to find the best solution for your operations. **Categories:** Dust Collection Equipment, Dust Collection System --- ### [Solutions for Managing Fly Ash Dust Challenges](https://www.slyinc.com/blog/solutions-for-managing-fly-ash-dust-challenges/) **Published:** July 29, 2025 **Author:** p1ws **Content:** Fly ash, a fine powdery byproduct of coal combustion, poses significant challenges in industrial settings. If not appropriately managed, this substance can cause serious environmental and health issues. Despite its problematic nature, fly ash offers valuable commercial uses, making its effective control essential. Understanding its properties and implementing robust dust control systems can transform a waste product into a useful resource. ## **The Importance of Effective Fly Ash Dust Control** Managing fly ash dust is essential for several reasons, impacting health, compliance, and operational efficiency. Key benefits include: - **Health Protection**: Reduces health risks for workers as inhaling fine particles can cause respiratory issues. - **Regulatory Compliance**: Helps maintain compliance with environmental regulations, avoiding costly fines. - **Operational Efficiency**: Minimizes equipment wear and tear caused by abrasive particles. - **Resource Repurposing**: Allows for the repurposing of fly ash in commercial applications like cement production. - **Work Environment**: Contributes to a safer and cleaner workplace, fostering better employee productivity and morale. A well-designed dust control system provides these benefits, ensuring safety and efficiency. ## **Challenges in Fly Ash Dust Control** Fly ash dust control presents several challenges. First, fly ash’s fine, abrasive nature makes it difficult to capture and handle. It’s prone to becoming airborne, which complicates containment efforts. Additionally, high dust loads and temperatures require durable, abrasion-resistant materials for equipment. Traditional dust collection systems often struggle with high-volume demands, leading to frequent maintenance and downtime. Finally, ensuring compliance with stringent environmental regulations adds another layer of complexity, necessitating precise system design and regular monitoring to maintain effectiveness. ## **Key Features of a Robust Fly Ash Dust Collection System** Creating an efficient fly ash dust control system is paramount for maintaining a safe and compliant work environment. Here are key features to look for in an effective fly ash dust collection system: - **Durable Materials**: Constructed from high-carbon alloy steel or other abrasion-resistant materials to withstand the abrasive nature of fly ash. - **Efficient Cooling**: Systems must include mechanisms to cool the airflow below 350°F before entering the baghouse. - **High Dust Load Handling**: Capable of managing several hundred grains per cubic foot of air, ensuring efficient operation even under heavy dust loads. - **Prefilter Cyclones**: Uses cyclones as prefilters to extend the life of the baghouse by removing larger particles and reducing dust loads before they enter the main filtration system. - **Advanced Filtration Media**: Features specialized filter media like P-84 or Teflon, which offer excellent tensile strength and resistance to high temperatures. - **Modular Design**: Allows for easy maintenance and scalability, ensuring the system can be tailored to specific requirements. - **Automatic Cleaning Systems**: Employs advanced cleaning mechanisms such as pulse jet or reverse air collectors to keep filters clean and maintain efficiency. - **Energy Efficiency**: Includes features like “on-demand” cleaning systems that optimize energy use by activating only when necessary. - **Compliance with Regulations**: Designed to meet stringent environmental regulations and safety standards, including explosion protection measures where needed. These features collectively contribute to a dust collection system capable of effectively managing fly ash, ensuring operational efficiency, and minimizing downtime. ## **Types of Dust Collectors** Various types of dust collectors tackle different industrial needs. Selecting the right fly ash dust control type depends on specific application requirements. Here are some common types: - **TubeJet Pulse Jet Collectors**: [These collectors](https://www.slyinc.com/products/dust-collectors/pulse-jet-collectors/) are known for their efficient cleaning and easy maintenance, as well as their suitability for high-temperature and high-pressure environments. - **Cartridge Dust Collectors**: [Cartridge collectors](https://www.slyinc.com/products/dust-collectors/cartridge-filter-collectors/) are ideal for capturing dry, free-flowing dust. They have features like easy cartridge removal and low headroom requirements. - **Reverse Air Collectors**: These [energy-saving collectors](https://www.slyinc.com/products/dust-collectors/reverse-air-collector/) use medium or low-pressure reverse air for cleaning filter bags, making them cost-effective. - **Legacy Dust Collectors**: Replacement parts on our older models, such as Pactecons, Dynaclones, and Shaker-cleaned collectors, are still available. Selecting the right dust collector ensures optimal fly ash management, promoting a safer and more efficient workplace. ## **Optimize Your Fly Ash Management** Effectively managing fly ash dust is crucial for safety, compliance, and operational efficiency. A robust dust collection system tailored to your specific needs can make a significant difference. To explore custom solutions for your facility, [request a quote](https://www.slyinc.com/contact/request-a-quote/) from Sly Inc. and enhance your dust control strategy. **Categories:** Dust Collector System, Fly Ash Dust Control --- ### [Power of the Baghouse in Industrial Air Quality Control](https://www.slyinc.com/blog/power-of-the-baghouse-in-industrial-air-quality-control/) **Published:** May 15, 2025 **Author:** p1ws **Content:** Baghouses are at the heart of effective industrial air quality control. These systems are designed to capture particulate matter, achieve required outlet emissions, and ensure cleaner air within facilities and surrounding environments where dust and pollutants are generated. By using carefully engineered filter media and efficient cleaning mechanisms, baghouses play a crucial role in meeting environmental regulations and improving workplace conditions. At Sly, we’ve spent more than a century perfecting our baghouse solutions to handle even the most demanding industrial applications. ## **How Do Baghouse Filters Work?** Baghouse systems operate by channeling contaminated air through specialized filter bags that capture dust particles while allowing clean air to pass through. As the dust-laden air enters the baghouse, it slows down, enabling heavier particles to settle out of the airstream and collect in the hopper below. Meanwhile, finer particles are trapped on the surface of the filter bags, ensuring effective air filtration. To maintain peak efficiency, baghouses employ cleaning mechanisms such as pulse jets, which emit short bursts of compressed air to dislodge accumulated dust from the filter surfaces. The dislodged dust then falls into a hopper below for easy collection and removal. Our TubeJet® pulse jet collectors ensure consistent airflow and optimal cleaning performance, even in high-temperature or corrosive environments. ## **Benefits of Baghouses in Industrial Applications** The value of baghouse systems lies in their ability to deliver high-performance air filtration while addressing regulatory and operational needs. They excel at capturing fine particulates that other systems might miss, helping facilities comply with OSHA and EPA standards. By reducing harmful emissions and minimizing the release of pollutants into the environment, baghouses contribute to environmental sustainability and help protect natural resources. Beyond compliance, they offer long-term reliability and cost savings by lowering maintenance requirements while improving overall plant efficiency. For industries managing combustible dust, these systems can incorporate explosion protection features to improve workplace safety and reduce the risk of damage to plant equipment. ## **Types of Baghouse We Offer** We provide a range of baghouse filters that meet diverse industrial challenges: - **STJ Square Series**: These [square/rectangular pulse jet collectors](https://www.slyinc.com/products/dust-collectors/pulse-jet-collectors/stj-square-series/) offer flexible configurations for top or side bag removal, making maintenance quicker and more accessible. With features like adjustable solid-state timers and durable construction, they’re ideal for high-capacity applications. - **CTR/CBR Cylindrical Series**: Built with an all-welded cylindrical structure, [these models](https://www.slyinc.com/products/dust-collectors/pulse-jet-collectors/cylindrical-series/) excel in applications requiring high pressure or vacuum capabilities. Their rounded design eliminates corners where dust can accumulate, increasing efficiency across demanding environments. Whether your facility handles food processing, metal finishing, or cement production, we have a baghouse solution that fits your needs. ## **Applications Across Industries** Baghouses serve a broad spectrum of industries where air pollution control is critical for health and safety. In industries such as metalworking and chemical manufacturing, for example, these systems help contain hazardous dust while ensuring compliance with stringent environmental and workplace safety regulations. In mining and metalworking, they efficiently capture abrasive particles and fumes generated during operations. Their versatility extends to fly ash recovery, biomass processing, chemical manufacturing, and more. Whatever your industry, our baghouses help solve complex dust challenges while maintaining operational efficiency. ## **Designing an Efficient Dust Collection System** The performance of your dust collection system depends heavily on its design. Airflow rates, dust properties, and space constraints must be carefully considered during planning. To help you get it right, we offer resources like our [dust collector buying guide](https://info.slyinc.com/dust-collector-buyers-guide) and comprehensive [system design guide](https://info.slyinc.com/dry-dust-collection-system-design-guide-1). Our team works closely with you to design a system that meets regulatory requirements and optimizes your application’s performance. ## **Choosing the Right Baghouse Solution** Selecting the right baghouse begins with understanding your unique operational needs—airflow requirements, particle size distribution, temperature conditions, and more all come into play. At Sly, we’re here to provide expert recommendations tailored to your industry and application. ## **The Role of Baghouse Filters in Cleaner Air** Baghouses are essential for maintaining cleaner air in industrial facilities across countless sectors. They protect employees from harmful particulates, contribute to environmental sustainability, and ensure compliance with ever-stricter regulations on emissions control. If you’re ready to explore customized options for your facility, we invite you to [request a quote](https://www.slyinc.com/contact/request-a-quote/) to get started. **Categories:** Baghouse, Filter cleaning --- ### [Industrial Dust and Dust Safety: Your Questions Answered](https://www.slyinc.com/blog/industrial-dust-and-dust-safety-your-questions-answered/) **Published:** November 9, 2021 **Author:** p1ws **Content:** As awareness of industrial dust and dust safety grows, so does the need for accurate information. Although it is not possible in this short article to answer every question, we hope the following list of frequently asked questions and answers will be helpful. ## What is Industrial Dust? Industrial dust is any dust created due to the processing of certain materials in the workplace. These processes could include sanding, crushing, conveying, mixing, or any number of activities that create fine particles. Although inhaling dust is often a health concern, some dusts are also combustible. If this dust accumulates, it can cause a fire or explosion, threatening workers and the surrounding community. According to the NFPA, combustible dust is a solid material composed of distinct particles or pieces less than 500 microns in size that presents a fire or deflagration hazard when suspended in air or some other oxidizing medium over a range of concentrations. ## What are the Most Common Combustible Dusts? Following are some common types of combustible dusts:![Block4-273x208](https://www.slyinc.com/wp-content/uploads/2024/08/Block4-273x208-3.jpg) - **Agricultural products:** egg whites, powdered milk, soy flour, cornstarch, sugar, tapioca, whey, and wood flour - **Agricultural dusts:** alfalfa, apple, cocoa powder, coffee dust, malt and rice flour - **Carbonaceous dusts:** charcoal, coal, coke and cellulose - **Chemical dusts:** adipic acid, ascorbic acid, calcium acetate, lactose, methylcellulose, sodium ascorbate and sulfur - **Metal dusts:** Aluminum, titanium, iron, magnesium and zinc - **Plastic dusts:** (poly) acrylamide, (poly) ethylene, epoxy resin, molded melamine, phenolic resin and polyvinyl chloride - You can download a list of combustible dusts from OSHA here: <https://www.osha.gov/Publications/combustibledustposter.pdf> ## What are the Top 5 Risk Factors for Dust Combustion? Many of the materials on OSHA’s list are only combustible when they occur in the right particle size, concentrations and environmental conditions: 1. Combustible fuel, such as dust 2. Sufficient dispersion of dust particles 3. Heat or an ignition spark, whether by friction or static electricity 4. The presence of enough oxygen 5. Confined dust clouds Dust explosions can occur in any industrial manufacturing context where these five risk factors are present. Although a solid piece of wood, metal, or plastic does not pose the potential for an explosion, these materials can ignite or explode when dispersed as fine particulates in the presence of an ignition source. Solid, noncombustible items can be turned into combustible dusts during manufacturing processes like machining (sawing, grinding or drilling) or finishing (buffing, polishing and abrasive blasting, etc.). ## How Do I Reduce the Risk for Dust Explosions? OSHA recommends the following dust control steps to help cut the risk for a fire or explosion: - **Capture:** Install a properly designed, approved and maintained dust collection system. - **Contain:** Make sure dust is contained within the equipment or system that is built to handle it safely. - **Clean:** Regularly clean work areas, surfaces and spaces to remove combustible dusts not captured or contained. ## What is an Industrial Dust Collector? Industrial dust collection is a time-tested method of air quality control. There are two types of industrial dust collectors: dry dust collectors and wet scrubbers. **Dry dust collecting** involves capturing and removing industrial particulates from the processing source using a dry dust collector like a pulse clean or reverse air baghouse, cyclone, or cartridge collector. Although dust collector designs can vary, typically, dust-laden air enters the collector through a baffled inlet located in the hopper where large, heavy dust collects, and the fine particulate is drawn upward and collected on the filter media. Then, either a large flow of reverse air or regular bursts of compressed air dislodge the dust cake from the filters, and it drops back into the hopper. This continuous cleaning will prevent excessive buildup on the filter media, extending its life and maintaining consistent operating conditions. The particulate is continuously discharged out of the hopper and into a container for disposal or conveyed for reintroduction into the process. **Wet scrubbers** incorporate devices that use water to remove dust from the air. These systems introduce the scrubbing liquid (usually water) to a gas stream containing the dust particles. Greater contact of the gas and liquid streams yields higher dust removal efficiency. Wet scrubbing options include impingement, venturi, eductor, and packed-tower scrubbers. Wet scrubbers are an alternative to baghouses or other dust collection approaches for some types of combustible dust. By the nature of the mechanisms applied within a wet scrubber, these devices can effectively mitigate the risk factors for explosion, as follows: - The use of water reduces the heat source and dust cloud. - Wet scrubbers eliminate the dust dispersion essential for combustion by aggregating dust particles within water droplets. ## What Type of Dust Collector Is Best: Wet or Dry? There is no simple answer to this question, and it depends on some important considerations: - Where will the dust collector be installed? - Which air quality standards are you required to meet? - What size of dust particles is involved? - Are you required to recover and reuse any collected dust particles or discard them? - Is the dust combustible, flammable, and/or explosive? - Will the dust require special treatment and handling based on its being poisonous, toxic, corrosive, and/or carcinogenic? - How much dust do you need to collect, handle and potentially dispose of? When choosing a dry system, baghouse collectors are recommended for the largest dust loads, cartridge dust collectors may be better for dry and free-flowing dust, and reverse air collectors may be best if you need to save on energy costs or have limited access to a supply of quality compressed air. When considering a wet scrubber system, keep in mind that some dusts can become water-reactive or can become sticky when they come in contact with water. Some dusts may float in water; others may sink or dissolve in water. Some scrubbers are only suitable for gas-phase contaminants and are not suited for dust removal. Following are three types of recommended wet scrubbers for dust collection: ### Impinjet® Wet Scrubbers Impinjet® wet scrubbers efficiently collect particulates and clean, cool, and absorb vapors and gases. They have low water recirculation requirements and minimum pressure drop, are resistant to fouling, and are available with capacities as high as 200,000+ CFM. ### Venturi Scrubber A Venturi scrubber collects fine particulates and mists using the differential between high-velocity gases and free-flowing water to create fine droplets that can entrap contaminants and hold them in suspension. They can remove very small particles and can be coupled with Impinjet scrubbers for maximum efficiency. ### Eductor Wet Scrubbers Eductor scrubbers can remove both soluble gases and particulates by inducing a gas flow using high-pressure liquid focused into a Venturi throat. There is no need for a separate exhaust fan or blower to transport the contaminant-laden airstream to the filtration device. It is important to note that choosing between dry dust collection and a wet scrubbing option may not be a binary choice. In certain situations, the best solution may be to combine the two systems. Again, this article is by no means a comprehensive resource and is only intended as a convenient educational overview. [Contact Sly](https://www.slyinc.com/contact/request-a-quote/) for your specific industrial dust safety questions. We are always here to help you customize the best dust safety solution for your facility. [Contact Us](https://www.slyinc.com/contact/) [Dust Collection System](https://www.slyinc.com/blog/category/dust-collection-system/), [Dust Collector](https://www.slyinc.com/blog/category/dust-collector/), [Dust Collector Maintenance](https://www.slyinc.com/blog/category/dust-collector-maintenance/), [Industrial Dust Collector](https://www.slyinc.com/blog/category/industrial-dust-collector/) **Categories:** Dust Collection System, Dust Collector, Dust Collector Maintenance, Industrial Dust Collector --- ### [How Particle Size Affects Dust Collector Selection](https://www.slyinc.com/blog/how-particle-size-affects-dust-collector-selection/) **Published:** September 3, 2025 **Author:** slyinc **Content:** Choosing the right dust collector for your operation isn’t just about capturing dust—it’s about capturing the right size of dust. Particle size impacts everything from filtration efficiency to system performance, making it essential to understand the composition of your dust. Knowing the particle size distribution can mean the difference between a clean, safe workspace and costly inefficiencies, whether you’re dealing with large, heavy particles or fine, airborne particles. ## **The Significance of Particle Size Distribution** Particle size distribution refers to the range of particle sizes present in a sample of dust. This distribution affects how easily particles can be captured and removed from the airflow. Larger particles, typically over 50 microns, are easier to capture. Most dust collectors can effectively remove nearly all particles of this size. Smaller particles, especially those under 10 microns, present a greater challenge. Their tiny size allows them to stay suspended in the air longer, making them harder to capture. ## **Choosing the Right Dust Collector Components** Selecting the appropriate dust collector requires precise information about the particle size distribution of the dust produced in your processes. This data helps in choosing components that will maximize efficiency and meet regulatory standards. ### **The Value of Accurate Data** Relying on averages or approximations isn’t sufficient. While providing a mean particle size with standard deviation offers a general idea, actual test data gives a clearer picture. Sending dust samples to a lab for analysis can provide a comprehensive particle size distribution curve. This detailed information is invaluable for designing a system that addresses your specific challenges. ## **Types of Dust Collectors and Their Applications** Different dust collectors handle various particle sizes and industrial applications. ### **Baghouse Collectors** [Baghouse collectors](https://www.slyinc.com/products/dust-collectors/pulse-jet-collectors/) are effective for a wide range of particle sizes, including very fine dust. They use fabric filter bags to trap particles, making them suitable for processes that generate dust under 20 microns. ### **Cartridge Collectors** [Cartridge collectors](https://www.slyinc.com/products/dust-collectors/cartridge-filter-collectors/) work well with dry, free-flowing dust and are particularly efficient with smaller particles. Their compact design and high filtration efficiency make them ideal when space is limited. ## **Enhancing System Performance** Understanding particle size distribution allows you to improve the performance of your dust collection system in several ways. ### **Optimized Equipment Selection** With precise particle size data, you can select dust collectors specifically designed to handle the range of particles in your processes. This targeted approach enhances efficiency and reduces maintenance needs. ### **Appropriate Filter Media** Factors like particle size distribution, operating temperature, and exposure to chemicals determine the type of [dust collector filter bags](https://www.slyinc.com/products/fabric-filter-media-options/) you need. Some options include: - **Cotton**: Used in shaker collectors and ambient air applications, with a maximum temperature of 180°F. - **Polyester**: Versatile and durable, suitable for most uses up to 275°F. - **Polypropylene**: Ideal for environments with moisture or chemicals, operating up to 190°F. - **High-Temperature Media**: Includes options like Nomex®, Fiberglass, and Teflon®, handling up to 500°F. - **SlyHE Felts**: Microfiber filters for fine, uniform dust capture and high efficiency. Matching the right media to your dust particle sizes and operating conditions ensures effective collection and system longevity. ## **Partnering with Experts** Understanding particle size distribution enables you to select an effective dust collection system. The right solution enhances air quality, safeguards your equipment, and ensures a safe, efficient operation. At Sly, we bring nearly 150 years of expertise to designing dust collection systems. [Our services](https://www.slyinc.com/services/) include particle analysis to ensure every system is optimized for your specific dust characteristics. Our team delivers reliable, customized solutions that meet your needs and exceed your expectations. Let us partner with you to create a cleaner, safer, and more productive workspace. [Contact us today](https://www.slyinc.com/contact/request-a-quote/) to discuss how our expertise can help you achieve the best results for your operation. **Categories:** Dust Collector System, Dust Collectors --- ### [Efficiency and Durability: High-Temperature Dust Collector Bags](https://www.slyinc.com/blog/efficiency-and-durability-high-temperature-dust-collector-bags/) **Published:** August 12, 2025 **Author:** slyinc **Content:** Dust collection in high-temperature environments demands more than standard solutions. High-temperature dust collector bags are engineered to withstand intense heat, harsh chemicals, and abrasive particles while maintaining peak filtration performance. Whether managing emissions in a cement kiln or capturing fine dust in a smelter, these durable bags ensure efficiency, compliance, and safety. ## **Key Features of High-Temperature Dust Collector Bags** High-temperature dust collector bags deliver exceptional performance under extreme conditions. With heat resistance up to 500°F, they are ideal for industries like cement kilns, power plants, and metal smelting that operate in high-heat environments. These bags offer excellent chemical compatibility, ensuring durability even when exposed to corrosive gases or abrasive particles. Advanced materials like Aramid, P84®, and Teflon® enhance their longevity and efficiency. Their robust construction supports improved particulate capture, enabling better air quality and compliance with regulatory standards. This combination of reliability and performance makes them indispensable for demanding filtration applications. ## **Material Options for High-Temperature Applications** Choosing the right material for high-temperature dust collector bags optimizes performance and longevity. Each material offers unique properties for specific industrial needs, ensuring reliable operation in challenging conditions. - **Aramid (Nomex®)**: Handles temperatures up to 375°F, with excellent resistance to abrasion and alkalis. - **Fiberglass**: Endures up to 500°F and offers superior acid resistance but less abrasion durability. - **P84® (Polyimide)**: Nonflammable with a maximum temperature of 500°F, ideal for smelters and kilns. - **PPS (Polyphenylene Sulfide)**: Works well at 375°F, excelling in high-moisture environments. - **Teflon®**: Withstands up to 500°F with outstanding chemical resistance but is more expensive. For a complete breakdown of material choices and their applications, explore our [filter media options](https://www.slyinc.com/products/fabric-filter-media-options/). Selecting the right material ensures both efficiency and durability in high-temperature environments. ## **Industries That Rely on High-Temperature Filter Media** High-temperature dust collector bags are essential across various industries that deal with extreme heat and challenging operating conditions. These industries rely on advanced filter media to maintain air quality, protect equipment, and meet stringent environmental regulations. ### **Cement Manufacturing** Cement kilns produce fine, abrasive dust at high temperatures. Fiberglass and P84® bags provide the durability needed for efficient filtration in these harsh conditions. ### **Power Plants** Coal-fired boilers and incinerators demand filter bags with excellent resistance to acids, moisture, and heat. PPS is a preferred choice in these applications. ### **Metal Smelting** Aramid and P84® bags handle extreme heat and capture particulate emissions during smelting processes, ensuring air quality compliance. ### **Industrial Dryers** Applications with elevated heat exposure, such as drying minerals and chemical dryers, benefit from materials like Teflon® and PPS for their high-temperature stability and chemical resistance. ### **Kilns** High-temperature filter media ensure consistent particle capture despite prolonged heat exposure, protecting equipment and the environment in operations like ceramics or lime kilns. ## **Signs It’s Time to Replace Your Dust Collector Bag** [Replacing your dust collector bag](https://blog.slyinc.com/3-reasons-to-replace-your-dust-collector-filter-bags) at the right time helps you maintain system performance and prevent costly downtime. Signs of wear include visible dust escaping through the exhaust, increased differential pressure, or poor filtration efficiency. Filter damage, often caused by excessive heat, over-pulsing, or abrasive dust, may lead to premature failure. Blinding, which occurs when filters can no longer release trapped particles despite cleaning cycles, is another indicator. Using incorrect materials for your application—such as bags incompatible with high temperatures or chemicals—can reduce performance and lifespan. ## **Elevate Performance with High-Temperature Dust Collector Bags** High-temperature dust collector bags combine durability, efficiency, and heat resistance to tackle the toughest industrial challenges. Improving air quality, protecting equipment, and ensuring compliance are essential investments for demanding applications. [Request a quote](https://www.slyinc.com/contact/request-a-quote/) today to enhance your operations. **Categories:** Dust Collectors --- ### [Dust Collector Filter Cleaning: Compressed Air Requirements for Cleaning Bag Filters](https://www.slyinc.com/blog/dust-collector-filter-cleaning-compressed-air-requirements-for-cleaning-bag-filters/) **Published:** November 21, 2017 **Author:** p1ws **Content:** If you operate a pulse-jet dust collector system, you need to keep the filter bags clean. This requires a reliable source of compressed air to pulse-clean the bags. But how much compressed air do you need? This will depend on how many bags you are cleaning, their diameter and their length. To determine how much compressed air is needed, it is helpful to understand how the cleaning process works. Many dust collection systems use a right-angle body diaphragm valve. Air comes in from one direction and flows out at a 90-degree angle. An internal diaphragm controls how much air passes through the valve. The diaphragm valve consists of an upper and a lower chamber. A flexible diaphragm separates the lower chamber of the valve (which connects to the pulse pipe) from the upper chamber (which connects to a solenoid valve). The solenoid core seals off an exhaust port. When an electrical current is passed through the solenoid’s coil, it creates a magnetic field inside that coil that pulls up the inner metal core. This opens the solenoid valve which allows the air from the upper chamber of the diaphragm valve to escape into the atmosphere. The resultant pressure imbalance inside the diaphragm valve causes the diaphragm to flex, allowing the air coming in from the compressed air manifold to pass through the pulse pipe into the dust collector for cleaning. ![Compressed Air Process Image.jpg](https://www.slyinc.com/wp-content/uploads/2024/08/Compressed-Air-Process-Image.jpg) ## How Much Compressed Air Do You Need? How much compressed air do you need for your system? There are many factors to take into consideration: - **Line Pressure:** Plant air supplies vary, and the suggested pulse pressure can be adjusted with the use of a filter-regulator. For most applications, Sly recommends operating at a line pressure of 90-100 psig. If only lower pressure is available, Sly can offer suggestions to change the configuration of the pulse system and dust collector geometry to accommodate the site conditions. Examples are adjusting valve size, frequency of pulsing, number of bags in a row or length of bags. - **Diaphragm Valve Size:** Diaphragm valves are available in a variety of sizes. The larger the valve, the more air is consumed in pulse-cleaning. Sly designs each pulse system for the most economical yet effective use of cleaning air. Valve size selection is dependent on the number of bags in each row to be cleaned, the length of the bags, and the available compressed air supply. - **Number of Valves:** This is the number of diaphragm valves pulsed at one time. Oftentimes in larger dust collectors, multiple solenoid valves may be connected to a single terminal on the timer. This allows several rows of bags to be pulse cleaned simultaneously, increasing the required scfm of compressed air. - **Size of the Compressed Air Header(s):** It is important to consider the size of the air header which acts as a reservoir of readily available compressed   With multiple valves pulsing simultaneously, and when larger valves are employed, the compressed air header diameter should be sized to be responsive to the compressed air usage. A pressure transmitter may be used to alarm a condition where an insufficient amount of compressed air is available. - **Electrical On-Time in the Solenoid:** How long the solenoid is open determines how much compressed air is used each time a pulse occurs. In general, pulses last from 50-100 milliseconds. It is seldom recommended to adjust this setting from the manufacturer’s setting. - **Interval Time between Pulsing:** The pulse timer allows variable settings in the intervals between energizing the solenoid valve for pulse-cleaning. It is recommended to pulse as infrequently as possible to maintain a steady pressure drop in the dust collector. Too frequent pulsing will result in accelerated wear to the filter bags and excess use of compressed air. - **Demand Pulse:** A reading of differential pressure can be used to signal when pulse-cleaning is needed, and when it can be discontinued for a period of time to optimize the amount of pulse-cleaning taking place. The cost of the compressed air supply may be the greatest operating cost in running a pulse-jet dust collector. Proper design and sizing of the compressed air system and its components help to keep your system running at its optimal level while keeping operating costs down. Sly works closely with our customers with custom dust collection solutions. You can rely on our 143+ years of expertise to design the right system for you. [Request a quote](https://www.slyinc.com/contact/request-a-quote/) or call us at 1-866-721-3545 for more information. [Contact Us](https://www.slyinc.com/contact/) [Bag Filter Cleaning](https://www.slyinc.com/blog/category/bag-filter-cleaning/), [Dust Collection System](https://www.slyinc.com/blog/category/dust-collection-system/) **Categories:** Bag Filter Cleaning, Dust Collection System --- ### [Chemical Precision: Exploring Dust Collection Solutions for Manufacturing Success](https://www.slyinc.com/blog/chemical-precision-exploring-dust-collection-solutions-for-manufacturing-success/) **Published:** April 17, 2025 **Author:** sitemanager@wpmanager.io **Content:** Airborne dust isn’t just a nuisance in chemical manufacturing—it’s a serious risk. From endangering workers to violating air quality standards, chemical and dust hazards can disrupt operations. Advanced dust collection systems provide the tools needed to protect safety, meet compliance standards, and drive cleaner, more sustainable production. ## **Understanding Chemical and Dust Hazards** Chemical manufacturing is intricate and demanding, but it comes with risks that can’t be ignored. Airborne dust, a common byproduct of chemical processes, poses threats to air quality, worker safety, and facility operations. ##### **The Impact of Airborne Dust in Chemical Manufacturing** Airborne dust in chemical facilities brings serious risks that can disrupt operations and endanger safety. Key dangers include: - **Health Risks**: Harmful particles can cause respiratory problems or chronic conditions. - **Cross-Contamination**: Dust can compromise product integrity and create safety risks for end users. - **Equipment Damage**: Buildup impacts machinery, leading to costly repairs or downtime. - **Combustion Hazards**: Certain dust types increase the risk of fires or explosions. Addressing these hazards protects workers, products, and facility operations. ##### **Regulatory Landscape and Compliance** Strict regulatory standards exist to address these risks. OSHA’s Permissible Exposure Limits (PELs) and time-weighted averages (TWAs) set clear guidelines for maintaining safe air quality. Manufacturers need to comply with OSHA, NFPA, and EPA regulations to avoid fines or legal complications. Dust collection systems play an important role here—capturing harmful particles to create safer environments while helping facilities meet these stringent requirements. ## **Advanced Dust Collection Technologies for Chemical Facilities** In chemical manufacturing, controlling airborne dust demands specialized equipment to match the complexity of the processes. Advanced dust collection systems provide dependable solutions for capturing dangerous particles, reducing risks, and meeting regulatory standards. Two primary technologies stand out—dry dust collectors and wet scrubbers—each suited to specific applications. ##### **Dry Dust Collectors** [Dry dust collectors](https://www.slyinc.com/products/dust-collectors/) are ideal for managing dry particulate matter generated during chemical processing. The [TubeJet Pulse Jet Collectors](https://www.slyinc.com/products/dust-collectors/pulse-jet-collectors/) excel in handling extreme conditions like high temperatures and pressures, making them suitable for demanding environments. With efficient cleaning mechanisms, they also minimize downtime during maintenance. Meanwhile, [Reverse Air Collectors](https://www.slyinc.com/products/dust-collectors/reverse-air-collector/) offer an energy-efficient alternative by using low and medium pressure air to clean filters. This method reduces energy consumption while maintaining effective dust removal. ##### **Wet Scrubbers** For operations involving toxic or combustible dust, [wet scrubbers](https://www.slyinc.com/products/wet-scrubbers/) provide a robust solution. These systems use liquid media to capture hazardous particles, neutralizing them safely before release. Wet scrubbers are particularly beneficial in handling fumes or fine mists that pose significant risks to both workers and equipment. ## **Key Benefits of Dust Collection Solutions in Chemical Manufacturing** Implementing dust collection systems in chemical facilities isn’t just a matter of compliance—it’s an investment in safety, productivity, and environmental stewardship. These systems address the unique hazards of chemical production, providing clear advantages that improve daily operations and long-term outcomes. - **Workplace Safety**: Protect workers from exposure to hazardous particles while reducing fire and explosion risks. - **Cross-Contamination Prevention**: Maintain product integrity by isolating different chemicals during processing. - **Operational Efficiency**: Minimize downtime by preventing equipment damage caused by dust buildup. - **Sustainability**: Reduce environmental impact by controlling emissions and recovering reusable materials. By incorporating advanced dust control technologies, chemical manufacturers can foster safer workplaces while improving reliability across their processes. ## **Customization: Tailoring Systems for Chemical Facilities** Every chemical facility faces unique dust challenges. Customized dust collection systems address these specific needs, improving performance and safety across operations. With over 150 years of expertise, Sly crafts solutions to handle even the most demanding chemical processes. Ready to solve your toughest air quality challenges? [Reach out today](https://www.slyinc.com/contact/request-a-quote/) to learn how Sly can help deliver solutions that fit your facility’s needs. **Categories:** Dust Collection System --- ### [3 Reasons to Replace Your Dust Collector Filter Bags](https://www.slyinc.com/blog/3-reasons-to-replace-your-dust-collector-filter-bags/) **Published:** August 8, 2018 **Author:** p1ws **Content:** ![baghouse-filters](https://www.slyinc.com/wp-content/uploads/2024/08/pulsejet-4.png)Changing a dust collector’s filter cartridges or baghouse’s filters too early adds unnecessary expense and takes up maintenance time that could be better spent on more urgent tasks. Changing a filter too late runs the risk of exposing workers in the facility to hazardous dust and the potential for fires or explosions. Also, as the filter becomes increasingly clogged, energy costs for the compressed air needed to run the system will rise, as will the stress on the dust collection system’s fans, bearings, etc. So how can you identify the “ Sweet Spot” that’s neither too early nor too late but “just right”? ## **Indicators That it’s Time to Change Your Filters Fall Into Three Broad Categories:** ### Filter Damage The most obvious sign of a damaged filter is dust streaming out from the collector’s exhaust or building up in clean-air plenums. A sudden, rapid drop in differential pressure is another clear indication of a damaged filter, which makes monitoring and plotting the differential pressure level on a daily basis crucial. When choosing a system, consider adding a broken bag sensor. In addition to obvious upset conditions like a fire or explosion, many things can damage a filter. Moisture and excessive heat can damage common filter bag fabrics such as polyester or aramid through a phenomenon called hydrolysis. This is a chemical reaction in which water reacts with the fibers of the filter bags and may cause serious damage, causing the bags to lose dimensional stability and fail to collect the dust. Other failure mechanisms include mechanical wear from abrasive dusts, overpulsing, or damaged cages. ### Filter Blinding The most common reason you’ll need to change your filters is filter blinding. This means that the bag has reached the end of its usable life. It has become depth-loaded with dust and periodic cleaning cycles will no longer remove enough dust to allow it to handle the required level of airflow. New filters have a relatively low differential pressure between the “clean” side and the “dirty” side. It builds slowly over time. As the filter approaches its end of life, the differential pressure will increase more rapidly. For guidance on the correct start-up procedure after installing a new filter to maximize its life, watch our [Start-up Procedure for a Dust Collector or Bag House video](https://www.youtube.com/watch?v=8zQtfWqtYAk). The length of a filter’s usable life depends on a variety of factors, including the type of dust it handles, the moisture/chemical composition of the gas stream, humidity, and operating conditions, etc. Many dust collector buyers fail to factor in the required filter change frequency when specifying a system. It’s always advisable to confer with a dust collection specialist and share all the information available on application and site conditions, including temperature, humidity and hours of continuous operation, as well as the type and amount of dust, before specifying both the system itself and filter media used with it. ### Incorrect Filter or Filter Media ![filter-bag-media](https://www.slyinc.com/wp-content/uploads/2024/08/sly-dry-bags-2.jpg)Many base their filter selections on cost without determining if the filter media is appropriate for the application. Improperly sized third-party filter bags will not perform optimally. The filter media might not have the correct temperature or chemical rating for the application. If this is the case, it generally doesn’t take long for problems to emerge. Look for dust emerging from the stack or for telltale readings from the collector’s particulate monitoring system. Sly provides a number of resources to help you choose the right filter and filter media for your application, including: - **[Types of Filter Media for Filter Bag Construction](https://www.slyinc.com/products/fabric-filter-media-options/):** This comprehensive list of common filter bag fabrics includes information about types of finishes, fabric weights and application recommendations. - **[Fabric Filter Properties](https://www.slyinc.com/pdfs/Fiber_Characteristics.pdf):** Learn which fabrics are most effective and efficient for your application and operating conditions. - **[Chemical Compatibility of Fabrics](https://www.slyinc.com/pdfs/Chemical_Compatibility.pdf):** This chart shows which fabrics are compatible with the chemicals and temperatures you may be using in your application. - **[Filter Bag Finishes](https://www.slyinc.com/products/fabric-filter-media-options/filter-bag-finishes/):** Various finish treatments can greatly improve filter life, dust cake release, resistance to abrasion, static dissipation and protection from harsh application conditions. Sly also offers support in helping you replace your filter bag. The following videos walk you through the installation process for several common filter types: - Installation of a Top Load Industrial Cloth Filter Bag. - Installation of a Bottom Load / Side Bag Removal Industrial Cloth Filter Bag. - Sly Envelope Bag Change-out Instructions. Sly works closely with its customers to design and maintain their dust collection systems. With nearly 150 years of experience, Sly, LLC, is your trusted resource for dust collection solutions. [Contact Sly today](https://www.slyinc.com/contact/request-a-quote/) for information or a quote on any industrial filtration product. [Contact](https://www.slyinc.com/contact/) [Bag Filter Cleaning](https://www.slyinc.com/blog/category/bag-filter-cleaning/), [Filter cleaning](https://www.slyinc.com/blog/category/filter-cleaning/) **Categories:** Bag Filter Cleaning, Filter cleaning --- ### [3 Common Reasons to Use Wet Scrubbers](https://www.slyinc.com/blog/3-common-reasons-to-use-wet-scrubbers/) **Published:** May 26, 2020 **Author:** p1ws **Content:** When it comes to air quality, it’s important to choose the best air pollution collection system for your specific application. Choosing the right system can mean the difference between a safe, productive work environment and a plant shutdown. Wet scrubbers, also known as wet dust collectors, are becoming increasingly popular in the industrial market due to their unique collection methods. Rather than filtering out contaminants with the filter media of a dry dust collector, wet scrubbers use a scrubbing liquid to remove gases, vapors, dust, and other pollutants through the impingement process. With this liquid, the efficiency of a wet scrubber can be controlled by the size of your water droplets. Smaller droplets lead to higher efficiencies, allowing certain wet scrubbing systems like Sly’s Venturi/Impinjet® combination scrubber to remove pollutants from stack emissions with a 99.999% efficiency rating. By using a wet scrubber, you have the unique opportunity to remove both particulate and gases/vapors from an airstream with one system. This makes wet scrubbers the perfect solution for a wide variety of industries, including pharmaceuticals, food production, plastics, and machining. No matter the application, **the top three conditions for using a wet scrubber are:** - Wet or sticky particulate - Humid air - Combustible dust ### Wet or Sticky Particulate Particulate that’s wet or especially sticky/gooey can clog a standard baghouse, leading to a host of problems. With the mechanisms of wet scrubbing, dealing with wet or sticky particulate isn’t an issue. You’re already creating a process that’s meant to mix with water, so you don’t have to worry about a hydrophobic collection system. ### Humid Air Problems with humid air can happen independently from the wet or sticky particulate issue. A great example is sand drying applications. While these processes mostly deal with dry particulate, humid air can cause condensation to form within a typical baghouse. Sand and similar particulate are also very abrasive, which can cause excessive wear on dust collectors and filter bags. All of this means more maintenance, replacement parts, and system downtime if you use a baghouse. However, wet air scrubbers were made for these types of applications, allowing your business to keep running smoothly. ### Combustible Dust Dust explosions are a significant issue when it comes to dust collection. While they can happen for a variety of reasons, every explosion requires five key elements: - Combustible fuel - Adequate fuel dispersion - An ignition source (heat, friction, static electricity, etc.) - Free oxygen - Confined fuel sources When it comes to the fuel for an explosion, many dusts can be combustible, igniting under certain conditions. According to the NFPA, a combustible dust is any solid material that’s composed of distinct particles or fragments smaller than 500 microns that can be a fire hazard when suspended in air or any other oxidizing medium over a range of concentrations. These can include anything from agricultural products like powdered milk and grain flours, to metallic and chemical dusts from aluminum and sulfuric acid. Dispersing these dusts in confined quarters – like a baghouse – can make them extremely explosive when in the presence of an ignition source. Even just a single spark can lead to a dust explosion in these conditions. Wet dust scrubbers effectively eliminate the risk of a dust explosion within the collector by mitigating and removing many of the factors required for an explosion. Using a scrubbing liquid, wet scrubbers can reduce heat sources, stop clouds of dust from forming, and eliminate dust dispersion by aggregating dust particles within water droplets. Of course, dust explosions can still occur downstream, and especially upstream, from the wet scrubber, so you need to properly handle combustible dust at every stage of the collection process, not just within the wet scrubber itself. ## Selecting the Right Wet Scrubber When it comes to wet scrubbers, there are several types that you can choose from, each designed for different applications. Sly specializes in each of the following: ### [Impinjet® Wet Scrubbers](https://www.slyinc.com/products/wet-scrubbers/impingement-wet-gas-scrubber/) Impinjet® wet scrubbers are used to collect a variety of particulates, vapors, and gases. Highly resistant to fouling, these scrubbers offer lower levels of water consumption and high collection efficiencies of 99% for particles 5 microns or larger. ### [Venturi Scrubbers](https://www.slyinc.com/products/wet-scrubbers/venturi-wet-scrubber/) Designed to collect fine particles and mists, Venturi scrubbers use the differential between high-velocity gases and free-flowing water to create ultra-fine droplets that entrap contaminants and hold them in suspension. Capable of removing the smallest particles, Venturis can be coupled with Impinjet® scrubbers for even higher collection efficiencies. ### [Eductor Wet Scrubbers](https://www.slyinc.com/products/wet-scrubbers/eductor-wet-scrubber/) Eductor scrubbers can remove both soluble particles and gases by inducing a gas flow focused into a Venturi throat using high-pressure liquid. They can also be used for direct-contact condensation. By eliminating the need to have a separate blower or exhaust fan to move the pollutant-laden airstream to the filtration device, Eductor scrubbers can maintain high collection efficiencies. Choosing the right type of wet scrubber to fit your unique needs will be crucial to getting the most out of your system, and keeping your business running at its best. ## The Sly Advantage With over 150 years of experience in controlling dust, the experts at Sly can help you find the right wet scrubber or baghouse for your unique application. If you want a knowledgeable team behind your air quality control, [contact us](https://www.slyinc.com/contact/) or [request a quote](https://www.slyinc.com/contact/request-a-quote/ "request a quote") today. [Contact](https://www.slyinc.com/contact/) [impingement](https://www.slyinc.com/blog/category/impingement/), [Venturi](https://www.slyinc.com/blog/category/venturi/), [Wet Scrubber](https://www.slyinc.com/blog/category/wet-scrubber/) **Categories:** impingement, Venturi, Wet Scrubber --- ### [The Importance of Dust Safety in the Biomass Industry](https://www.slyinc.com/blog/the-importance-of-dust-safety-in-the-biomass-industry/) **Published:** May 5, 2023 **Author:** p1ws **Content:** While biomass has existed since the earth was formed, the past few decades have witnessed an increased interest in using biomass stock in unique ways. These innovative ideas have created a distinction between “modern” and “traditional” biomass. Modern uses repurpose waste products with a biological origin into new products or bioenergy. Whether modern or traditional, during its conversion, biomass often requires dust mitigation efforts to prevent accidents and promote worker safety. Methods of supplying this include proper maintenance and industrial housekeeping practices, in addition to biomass dust collector systems, depending on the application. Understanding the hazards and how a dust collector works can help biomass processing operations realize cleaner air quality and improved safety. ## Defining Biomass Biomass is a broad term that describes renewable organic materials derived from the waste associated with living organisms, such as animals or livestock, plants and microorganisms. Sources range from food waste to crop residue, sewage sludge, wood or even algae. Some of the many uses for converted biomass include bioenergy, biochemicals, animal feed, soil amendments, carbon sequestration, food additives and consumer products from adhesives to cosmetics. However, biomass requires a drying process as part of its conversion into useful purposes. The dust resulting from drying and subsequent processes poses various workplace hazards, from biological pathogens to possible combustion or even explosion. ## Biomass Dust Hazards – Fire and Explosion Risk One of the primary uses of biomass is for fuel, and wood products supply one of the primary biomass feedstocks for this purpose. Any facility producing energy, even biofuels, must consider fire and explosion mitigation. The use of biomass for fuel is increasing, increasing the risk of potential incidents. According to the International Energy Agency (IEA), biomass accounts for approximately 10% of the world’s primary energy supply. In the United States in 2021, it accounted for 5% of our total energy supply. Types of biomasses that can create the most hazardous dust can vary depending on multiple factors, including particle size, shape and chemical composition. Generally, biomass materials that are very dry and finely ground tend to produce the most dangerous, combustible dust. Examples of biomass that are more prone to producing hazardous dust include sawdust, wood chips, rice husks and straw. These materials are common to woodworking, paper manufacturing and agricultural industries. For example, sawdust has a high explosive potential due to its fine particle size and lower moisture content compared to other types of biomasses. ## The Triangle of Combustion The triangle of combustion requires fuel, oxygen and heat. These three elements exist in abundance in a wood pellet plant. Processes for converting biomass into energy or an industrial ingredient often generate dust which can quickly accumulate on machinery, rafters, cable trays, conduit and piping, supplying the fuel for combustion. Dryers, hammer mills, pelletizers, and even the conveyors and machinery moving material from one location to another can contribute to combustibility. For example, moving or manipulating a combustible product creates friction and heat. Add in oxygen and dust for fuel and combustion is a real threat. An additional factor, confinement, such as wood dust in an enclosed bin, turns that fire into a potential explosive. Due to the above hazards, there is a need for increased focus on how this dust is stored, transported and collected in the system. This includes ways to prevent the dust from being produced, preventing it from escaping the system into the plant and using properly designed dust collection systems. When there is potential for dust escaping into the plant, it is essential to establish specific guidelines on safe levels regarding fire and explosion risk. Sections in the plant with possible fire or explosion risks due to explosive atmospheres and/or mixtures are called hazardous (or classified) locations or areas. A Class/Division system is commonly used in the United States and Canada. In other parts of the world, a Zone system is typically used. ## NFPA Regulations and Dust Hazard Analysis The National Fire Protection Association (NFPA) tracks fire and combustion incidents in industrial or manufacturing properties. It noted that U.S. fire departments respond to an average of more than 37,000 fires each year (2011-2015) at industrial or manufacturing plants. Considering this, NFPA devotes more than one standard to regulating dust control to help prevent fires and explosions. The following list relates to biomass dust control: - Standards 61, 652, 654 and 655 describe dust control measures. - NFPA 664 Standard for the Prevention of Fires and Explosions in Wood Processing and Wood Working Facilities covers wood biomass and pellet plant protection. - NFPA 61 was written for Agricultural and Food Processing Facilities or agricultural-based biomass. This standard specifically calls out enclosed vessels, such as bins, hoppers, enclosed bucket elevators, etc., as primary areas of concern. - The NFPA 68 Standard on Explosion Protection by Deflagration Venting helps detail the type of venting and engineering that can be applied to a dust collection system, with the design and protective measures based on the explosive nature of the dust. It is worth noting that there are significant changes on the horizon for NFPA 652, which will incorporate all commodity-specific standards within the single directive in the future, including biomass materials from a wide range of feedstocks. In wood pellet and biomass industries, facilities using wood-based products must conduct a dust hazard analysis (DHA), which examines the potential for hazardous atmospheres and ignition sources. As of January 1, 2022, facilities that process agricultural-based products also need to complete a DHA, and these DHAs, regardless of industry, must be revalidated every five years. Other recommendations include spark detection systems, typically associated with conveyors and dust collection systems. The appropriate extinguishing system should accompany these recommendations. And based on NFPA 68, dust collection systems should include explosion venting and explosion isolation on the inlet and outlet (if required). This equipment can help control or prevent deflagration from moving through equipment and sparking a secondary explosive event. ## Health Concerns an Issue With Some Biomasses The challenges presented by biomass dust, however, involve not only combustibility but also biohazards. Chicken manure is one example. Its dust contains organic matter such as bacteria, fungi and other microorganisms, including pathogens such as *salmonella* and *e. coli*. These can pose a health risk to employees. Chicken manure is a type of biomass that can be used as a renewable energy source, primarily through anaerobic digestion. This process produces biogas or creates feedstock for combustion to generate heat and/or electricity. The type of dust it generates depends on the manure’s age, moisture content, and method of handling and processing. As a result, proper sanitation processes and equipment for minimizing and capturing the dust generated is critical. Sometimes, a wet scrubber may be required for odor control and/or to neutralize the constituents present. Prolonged or repeated exposure to fine biomass dust can negatively impact employees’ health. In addition to risks associated with potential pathogens such as those listed for chicken manure, other types of biomass dust can create health issues if not properly contained. For example, the dust associated with wood products contains toxins which may cause allergic respiratory symptoms, mucosal and non-allergic respiratory systems, and even lung cancer. ## Working With an Expert Dust Collection Firm Sly LLC offers at least twenty years of experience working within the biomass industry. Add this to its 100+ year history in dust collection overall, and companies can rest assured that any dust collection system designed and engineered by Sly LLC staff will supply effective dust control for any particulate matter. Sly offers a full range of dust collection equipment customized to fit each industrial scenario. Whether a baghouse, wet scrubber, or loading spout is required, the team at Sly can optimize dust capture for improved air quality, safety, and maintenance. We can explain the ins and outs of a biomass dust collector and which type of system will best apply. ## A Unique Biomass Product in South Florida As one example, Sly developed a system for a bioenergy facility in South Florida, which was converting biomass feedstock into electrical power and renewable fuel. The facility needed a dust collection system to capture particulates resulting from drying palm fronds, a fibrous plant material. When dried, the resulting dust has a low bulk density and a high combustibility potential. Sly installed a dust collection system and baghouse with special modifications designed to manage the lightweight, potentially combustible particulates resulting from drying the biomass feedstock. Engineered design modifications included a higher rear inlet on the baghouse to collect the particulates from the dryer and explosion-proof venting for safety. The baghouse incorporated one other customized feature, a reinforced structure designed and built to withstand high winds of up to 140 MPH. This area of South Florida is subject to severe weather outbreaks due to hurricanes. Further details are included in this  [case study](https://www.slyinc.com/wp-content/uploads/2025/01/SLY_PalmFrond-CaseStudy-v2-1.pdf). Sly LLC is happy to consult on the results of the dust hazard analysis conducted in compliance with NFPA regulations and design and engineer a collection system to protect life and property. [Download](https://info.slyinc.com/biomass-wp) [our white paper](https://info.slyinc.com/biomass-wp) to learn more about Sly LLC and its experience with biomass dust collection equipment and systems. Or give us a call and discuss your specifications with our engineers. Author: Al Moretti, Dry Segment Sales Manager Al has been with Sly for over 2 years and in the dust collection industry for over 25 years [Contact Us](https://www.slyinc.com/contact/) [Biomass](https://www.slyinc.com/blog/category/biomass/), [Dust Collection System](https://www.slyinc.com/blog/category/dust-collection-system/), [Dust Collector](https://www.slyinc.com/blog/category/dust-collector/) **Categories:** Biomass, Dust Collection System, Dust Collector --- ### [Wet Dust Collectors: Your Solution for Hazardous Particulates and Cleaner Operations](https://www.slyinc.com/blog/wet-dust-collectors-your-solution-for-hazardous-particulates-and-cleaner-operations/) **Published:** January 29, 2026 **Author:** slyinc **Excerpt:** Tackling Hazardous Dust with Water A wet dust collector is an air pollution control system that uses water or other liquids to capture and remove harmful particulates from industrial exhaust streams. **Content:** ## Tackling Hazardous Dust with Water ![wet dust collector](https://images.bannerbear.com/direct/4mGpW3zwpg0ZK0AxQw/requests/000/118/218/630/LWXrA1qRoQvP9mjRzypMJegBj/8cff5301165c2779986d2fa8eb42311417da721c.jpg "wet dust collector") A **wet dust collector** is an air pollution control system that uses water or other liquids to capture and remove harmful particulates from industrial exhaust streams. Unlike dry filters, wet collectors scrub contaminated air by bringing dust particles into contact with liquid, which traps them and safely removes them from your facility. **Key advantages of wet dust collectors:** - **Safety first** – Eliminates explosion risks from combustible dust by keeping particles wet - **Handles tough materials** – Captures sticky, hot, or corrosive dust that clogs dry filters - **Meets regulations** – Helps achieve OSHA and NFPA compliance for hazardous particulates - **Versatile applications** – Works for metal grinding, silica dust, chemical processing, and more If your facility deals with combustible dust, sticky materials, or high-temperature particulates, a **wet dust collector** might be your best solution. These systems excel where traditional dry collectors fail or create safety hazards. The water-based approach works by forcing dust-laden air through liquid droplets or sprays. Particles stick to the water, fall out of the airstream, and collect as a liquid solution that you can safely dispose of. The scrubbed air exits clean, protecting both your workers and the environment. This guide walks you through **wet dust collector** types, applications, and how to select the right system for your specific needs. We’ll cover everything from basic principles to maintenance requirements, helping you make an informed decision about cleaner, safer operations. ![Infographic showing the wet dust collector process: dirty air enters the system, passes through water spray or liquid curtain where dust particles are captured and trapped in water droplets, particulates fall to collection chamber as sludge, and clean air exits through the exhaust while water recirculates through the system - Wet dust collector infographic infographic-line-3-steps-blues-accent_colors](https://images.bannerbear.com/direct/4mGpW3zwpg0ZK0AxQw/requests/000/118/218/607/jMVrobL3AQ5yvw9vQG9ReqJW5/545d6be23e57d76d7c89cdf3586f0f96cc0b1416.jpg "Infographic showing the wet dust collector process: dirty air enters the system, passes through water spray or liquid curtain where dust particles are captured and trapped in water droplets, particulates fall to collection chamber as sludge, and clean air exits through the exhaust while water recirculates through the system - Wet dust collector infographic infographic-line-3-steps-blues-accent_colors") ## How Wet Dust Collectors Capture Harmful Contaminants At its heart, a **wet dust collector** is a master of elemental combat: water versus dust. The magic happens through a process called scrubbing, where contaminated air is brought into intimate contact with a scrubbing liquid, typically water. This ensures that even the most stubborn or dangerous particulates are effectively removed from the air we breathe and the environment we work in. Imagine a microscopic wrestling match. Dust-laden air enters the collector. Inside, the scrubbing liquid is introduced, often as a fine spray, a turbulent pool, or a cascading curtain. As the dirty air passes through this liquid barrier, several mechanisms kick in to capture the particulates: - **Impingement:** Larger dust particles, due to their inertia, cannot follow the airstream around the water droplets. They “impact” or impinge directly onto the liquid surface and become trapped. - **Entrainment:** Smaller particles get caught in the turbulent eddies created by the air and water interaction. They become “entrained” or embedded within the water droplets. - **Diffusion:** REMOVE THIS ALTOGETHER - **Condensation:** If the air is hot and humid, water vapor can condense on the particles, making them heavier and easier to capture. Once captured, these dust-laden water droplets fall out of the airstream due to gravity. They collect at the bottom of the unit. This liquid, now containing the particulates, can then be safely removed for disposal or further treatment. Meanwhile, the cleaned air exits the collector through the exhaust, often after passing through a mist eliminator to remove any lingering water droplets. Many **wet dust collector** systems also incorporate sophisticated water recirculation systems. This means the scrubbing liquid, after it has captured dust, is reused, reducing water consumption and operational costs. We carefully design these systems to ensure continuous, efficient particulate capture while minimizing resource use. ### Benefits of a Wet Dust Collector for Combustible Dust When it comes to handling combustible dust, safety isn’t just a priority; it’s a non-negotiable requirement. This is where a **wet dust collector** truly shines and provides unparalleled peace of mind. Unlike dry collection systems that can inadvertently create conditions ripe for dust explosions, wet collectors inherently mitigate this critical risk. Combustible dust, when suspended in air in the right concentration and exposed to an ignition source, can lead to devastating explosions. Industries dealing with materials like wood, grains, metals (such as aluminum or magnesium), plastics, and certain chemicals face this constant threat. Our primary goal is to ensure the safety of your facility and personnel. By introducing water into the collection process, **wet dust collectors** keep combustible dust particles wet and saturated. This simple yet effective action minimizes the formation of an explosive dust cloud. This fundamental difference translates into significant safety improvements for operations that generate such hazardous particulates. Adhering to standards set by organizations like the National Fire Protection Association (NFPA) is crucial. NFPA guidelines, particularly those concerning combustible dust, often recommend or even mandate specific control measures to prevent explosions. A **wet dust collector** is an excellent solution for meeting these stringent requirements. Furthermore, OSHA provides comprehensive information on [Combustible Dust hazards explained by OSHA](https://www.osha.gov/combustible-dust), which underscores the seriousness of these risks and the importance of effective control. Beyond regulatory compliance, the use of a **wet dust collector** can also positively impact your insurance requirements and premiums. Insurers recognize the reduced risk profile associated with wet collection systems for combustible dust, potentially offering more favorable terms. Investing in a robust **wet dust collector** is an investment in safety, compliance, and the long-term operational stability of your facility. It’s about ensuring everyone goes home safe at the end of the day. ### Wet vs. Dry Dust Collection: Making the Right Choice Choosing between a **wet dust collector** and a dry system is a critical decision that impacts safety, efficiency, and cost. While both aim to clean the air, their methods and ideal applications differ significantly. We’ve put together a comparison to help you steer this choice. | Feature | Wet Dust Collector | Dry Dust Collector | |---|---|---| | **Dust Type** | Combustible, sticky, hygroscopic, hot, explosive, corrosive, fine particulates | Non-combustible, dry, non-sticky, coarse, granular, ambient temperature | | **Safety** | Excellent for combustible dust (eliminates explosion risk), handles sparks/flames | High explosion risk for combustible dust (requires explosion protection), fire risk for hot materials | | **Maintenance** | Liquid handling, water treatment, corrosion prevention, nozzle/fan checks | Filter replacement, bag cleaning, wear on internal components | | **Cost** | Higher initial capital, ongoing water disposal costs, lower fire insurance often | Lower initial capital, ongoing filter replacement costs, higher fire insurance often | | **Efficiency** | Very high for fine particles, gases, and mists | High for larger particles, can struggle with sub-micron dust | | **Footprint** | Can be more compact for certain applications | Often requires significant space for filter banks | | **Disposal** | Liquid solution (can be messy, requires proper handling) | Dry dust (easier to handle, but can be re-entrained) | **When do we lean towards a wet dust collector?** - **Sticky Dust:** Materials that gum up dry filters, like certain food powders or resins, are no match for water. The liquid washes them away, preventing clogging. - **Hygroscopic Materials:** Substances that absorb moisture from the air can become problematic in dry systems. Wet collectors handle this naturally. - **Corrosive Gases:** Some **wet dust collector** designs, particularly scrubbers, can also absorb and neutralize corrosive gases in addition to particulate removal. - **Fire Risks & Sparks:** Operations involving grinding metals, welding, or high-temperature processes that produce sparks or hot particulate benefit immensely. The water immediately quenches any ignition sources, preventing fires and explosions. - **Combustible Dust:** As discussed, this is perhaps the most compelling reason. Keeping dust wet is the safest way to handle it. - **Moisture Content:** If the process air already has high moisture content, a dry system might struggle, making a **wet dust collector** a more natural fit. While dry collectors are excellent for many applications, particularly those with non-combustible, dry, and coarse dust, their limitations become apparent with hazardous, sticky, or hot materials. The efficiency trade-offs are also important; **wet dust collectors** can be incredibly effective at capturing very fine particulate matter and even certain gaseous contaminants, areas where dry filters might struggle or require additional specialized equipment. We help you weigh these factors to select the optimal solution for your specific needs. ## Critical Applications: When to Use a Wet Dust Collector The versatility and inherent safety benefits of **wet dust collector** systems make them indispensable across a wide array of industries, particularly where hazardous, sticky, or hot particulates are a concern. We often recommend a **wet dust collector** for critical applications where robust air pollution control is paramount. Here are some scenarios where a **wet dust collector** truly excels: - **Silica Dust:** Operations involving sand, concrete, or stone cutting generate crystalline silica dust, a known respiratory hazard. Wet collectors effectively capture this fine, dangerous particulate, preventing it from becoming airborne. - **Sand Processing & Mineral Processing:** From foundries to quarries, these industries produce significant amounts of abrasive dust. A **wet dust collector** can handle the high dust loads and often abrasive nature of these materials without rapid wear on filter media. We have experience in Dust control in mineral processing and understand the unique challenges. - **Metal Grinding & Finishing:** Processes like grinding, polishing, and deburring of metals (especially aluminum, magnesium, or titanium) create fine, often combustible dust and sparks. The water in a **wet dust collector** immediately quenches sparks and wets combustible metal dust, drastically reducing fire and explosion risks. - **Food Processing:** Certain food ingredients can be sticky, hygroscopic, or combustible. Wet collectors are ideal for capturing these powders, preventing blockages, and maintaining hygienic conditions. - **Pharmaceutical Manufacturing:** In pharmaceutical production, fine powders are common. A **wet dust collector** can provide high-efficiency particulate removal, crucial for product quality and worker safety, especially when dealing with potent compounds. - **Chemical Plants:** Many chemical processes involve corrosive, explosive, or sticky particulates and fumes. Specialized **wet dust collector** designs can not only capture these particulates but also absorb hazardous gases, offering a dual-purpose solution. These industries often face strict environmental regulations and high safety standards. A **wet dust collector** provides a reliable and compliant solution, ensuring cleaner operations and a safer working environment for everyone involved. ### Choosing the Right Wet Dust Collector for Your Industry Selecting the perfect **wet dust collector** isn’t a one-size-fits-all decision; it’s a careful process of matching technology to your unique operational needs. Our expertise lies in conducting a thorough application analysis to ensure we design and provide the most effective and efficient solution for your facility. Here are the key factors we carefully consider: - **Dust Characteristics:** This is paramount. Is the dust combustible, sticky, abrasive, hygroscopic, or corrosive? What is its particle size distribution? Is it hot? Understanding these properties dictates the type of scrubbing liquid, construction materials, and specific collector design. For instance, highly abrasive dust might require specialized wear-resistant linings. - **Airflow Requirements:** What volume of air needs to be cleaned? This is typically measured in cubic feet per minute (CFM) or cubic meters per hour (CMH). This directly influences the size and capacity of the **wet dust collector** and the fan needed to move the air. - **Temperature:** The temperature of the gas stream is crucial. High temperatures might require cooling before scrubbing or specific materials of construction for the collector. - **Chemical Compatibility:** If the dust or gas stream contains corrosive elements, or if a scrubbing agent other than water is needed, we must ensure all components of the **wet dust collector** are chemically compatible to prevent premature corrosion and failure. - **Space Constraints:** Industrial facilities often have limited space. We evaluate the available footprint to recommend a **wet dust collector** design that fits efficiently into your existing layout, whether it’s a compact unit or a larger, custom-engineered system. - **Disposal Requirements:** How will the collected liquid solution be handled? This involves considering local regulations and available waste treatment options. By carefully evaluating these parameters, we can pinpoint the ideal **wet dust collector** type, material of construction, and ancillary equipment (like pumps, fans, and water treatment systems) to deliver a solution that not only meets your performance goals but also ensures long-term reliability and compliance. ## A Guide to Wet Dust Collector Types and Designs The world of **wet dust collector** technology is diverse, offering various designs, each with its own strengths and ideal applications. While they all use liquid to capture particulates, the method of bringing air and water into contact varies significantly. Our goal is to select the most efficient and cost-effective design for your specific challenge. Here are some common **wet dust collector** designs we use: - **Venturi Scrubbers** - **Impingement Plate Scrubbers** - **Packed Bed Scrubbers** \* - **Cyclonic Scrubbers** \* The design selection process involves a careful balance of efficiency ratings, the required pressure drop (the energy needed to move air through the system), and the practicalities of maintenance needs. Some designs offer extremely high efficiency for very fine particles but come with a higher energy consumption. Others might be more suited for sticky dusts or gas absorption with lower energy demands. We help you steer these choices. ### Venturi Scrubbers When it comes to high-efficiency collection of fine particulates, Venturi scrubbers are often our go-to solution. These powerful **wet dust collector** systems are engineered for demanding applications where capturing sub-micron particles is critical. The core of a Venturi scrubber is its unique design: a converging section, a throat section, and a diverging section. As the dirty gas stream enters the converging section, its velocity rapidly increases. At the narrowest point, the throat, the gas reaches extremely high velocities. Scrubbing liquid (usually water) is introduced either at the throat or just upstream. The intense turbulence and high-energy scrubbing at this point cause the liquid to atomize into tiny droplets, creating an enormous surface area for dust capture. Fine particulates, unable to change direction quickly enough due to their inertia, collide with these high-velocity water droplets. This violent contact leads to efficient capture. After the throat, the gas-liquid mixture enters the diverging section, where the velocity decreases, and the larger, dust-laden droplets agglomerate and separate from the gas stream. Venturi scrubbers are particularly effective for: - **Fine particulates:** They excel at capturing particles as small as 0.5 microns. - **High-temperature gases:** They can cool hot gas streams while removing particulates. - **Sticky or corrosive dusts:** The high-energy scrubbing action prevents buildup. The trade-off for this high efficiency is typically a higher pressure drop, meaning more energy is required for the fan to move the air through the system. However, for critical applications, the superior performance of a Venturi **wet dust collector** often outweighs this consideration. ### Impingement Plate Scrubbers For applications requiring good particulate removal with a lower energy footprint than Venturi scrubbers, impingement plate scrubbers are an excellent choice. These **wet dust collector** systems are known for their robust design and ability to handle a variety of dust types, including sticky materials. The operational principle revolves around a series of perforated baffle plates arranged vertically within the collector. Dirty air enters the unit and passes upward through these plates. A scrubbing liquid, typically water, flows over the plates, creating a liquid film or curtain. As the air passes through the perforations in the plates, it is forced to change direction rapidly and accelerate. Dust particles in the airstream impact or “impinge” directly onto the wetted surfaces of the plates and the liquid film. This direct contact traps the particles. The turbulent action also helps to entrain smaller particles. The captured dust then drains away with the scrubbing liquid at the bottom of the collector. Key advantages of impingement plate scrubbers include: - **Medium efficiency:** They provide good removal efficiencies for a wide range of particle sizes. - **Lower energy use:** Compared to high-energy scrubbers, they operate with a lower pressure drop, reducing fan power requirements. - **Sticky dust applications:** The continuous washing action of the plates prevents buildup, making them suitable for sticky or agglomerating dusts. - **Simplicity:** Their design is relatively straightforward, contributing to ease of maintenance. We often recommend impingement plate scrubbers for operations where a balance of efficiency, energy consumption, and maintenance ease is desired. You can find more comprehensive information about these and other types of **wet dust collector** systems and their capabilities on our page dedicated to [More info about wet scrubbers](https://www.slyinc.com/products/wet-scrubbers/). ### Packed Bed Scrubbers While many **wet dust collector** types excel at particulate removal, packed bed scrubbers offer a specialized capability: gas absorption and odor control. These systems are particularly effective when your industrial process generates gaseous contaminants or unpleasant odors. A packed bed scrubber contains a “bed” of packing material, such as plastic rings, saddles, or other shapes. This packing material is designed to provide a very large surface area. The dirty gas stream enters the bottom of the scrubber and flows upward through this bed. Simultaneously, the scrubbing liquid (which can be water or a chemically reactive solution) is distributed over the top of the packing and flows downward, counter-current to the gas flow. As the gas passes through the wetted packing, the large surface area facilitates intimate contact between the gas molecules and the scrubbing liquid. This contact allows for: - **Gas absorption:** Soluble gases dissolve into the scrubbing liquid. - **Chemical scrubbing:** If the liquid contains a reactive chemical (e.g., an acid or caustic solution), it can chemically react with and neutralize specific gaseous pollutants. - **Odor control:** Many odorous compounds are gaseous, and packed bed scrubbers can effectively remove them through absorption or chemical reaction. Packed bed scrubbers are generally used for: - **Low dust loads:** While they can handle some particulate, their primary strength is gas and odor removal. High dust loads can clog the packing material. - **Corrosive gas removal:** By using appropriate scrubbing liquids and construction materials, they can effectively manage corrosive fumes. - **VOC (Volatile Organic Compound) control:** Certain VOCs can be absorbed or reacted. For facilities dealing with gaseous emissions, a packed bed scrubber can be an integral part of a comprehensive air pollution control strategy, ensuring compliance and a cleaner working environment. ## Key Considerations for Maintenance and Operation Owning a **wet dust collector** is like owning a high-performance vehicle: it requires regular care and attention to maintain peak efficiency and longevity. We believe in providing solutions that are not only effective but also manageable in the long run. Proper maintenance and operational practices are crucial for maximizing your investment. Here are the key considerations we emphasize for maintaining your **wet dust collector**: - **Liquid Disposal:** This is perhaps the most significant operational difference from dry collectors. The collected dust is mixed with water. This dirty water must be regularly removed and disposed of according to local environmental regulations. We help you plan for appropriate liquid handling, which might involve dewatering systems or specialized waste disposal services. - **Water Treatment:** Depending on your process and local water quality, the scrubbing liquid may need treatment. This could involve filtration to remove solids, pH adjustment to prevent corrosion, or the addition of anti-foaming agents. Some systems incorporate recirculation to minimize fresh water usage, which also requires careful monitoring of water quality. - **Corrosion Prevention:** Because water and dust are involved, corrosion is a potential concern, especially with acidic or alkaline dusts. Regular inspection of internal components, proper material selection (e.g., stainless steel or specialized coatings), and maintaining appropriate water chemistry are vital to prevent premature wear. - **Fan Maintenance:** The fan is the heart of any dust collection system. Regular inspection of bearings, belts, and impellers is essential to ensure efficient airflow and prevent breakdowns. Unbalanced impellers or worn components can lead to reduced performance and increased energy consumption. - **Nozzle Inspection:** For scrubbers that use spray nozzles, regular inspection and cleaning are critical. Clogged or worn nozzles can lead to uneven water distribution, significantly reducing collection efficiency. - **System Monitoring:** Implementing a system to monitor key parameters like pressure drop, water flow, and pH can provide early warnings of potential issues, allowing for proactive maintenance rather than reactive repairs. We understand that maintenance can seem daunting, which is why we offer comprehensive Preventive maintenance services to help keep your **wet dust collector** running smoothly. Regular, scheduled maintenance not only prevents costly downtime but also ensures your system continues to meet regulatory compliance and provides the cleanest air possible. ## Conclusion: Partner with an Expert for Your Clean Air Solution Navigating the complexities of industrial air pollution control, especially when dealing with hazardous particulates, requires expertise, experience, and a commitment to quality. A **wet dust collector** offers a powerful, safe, and effective solution for a wide range of challenging applications, from combustible dust to sticky materials and corrosive fumes. We’ve seen how these systems deliver critical benefits: improved safety through explosion risk mitigation, compliance with stringent environmental and occupational health regulations, and improved operational efficiency by preventing material buildup and ensuring cleaner facilities. For over 120 years, since our pioneering work in 1902 with the first cloth-type dust collector, Sly, LLC has been dedicated to delivering reliable, no-compromise solutions for the cleanest air possible. We apply this deep-rooted knowledge and innovation to every **wet dust collector** we design and manufacture in Strongsville, Ohio, and Mathiston, Mississippi. Our approach is built on understanding your unique challenges and providing custom solutions that fit your specific industry and application. We don’t just sell equipment; we partner with you to ensure your facility operates safely, efficiently, and compliantly. If you’re facing challenges with hazardous dust, sticky materials, or combustible particulates, we invite you to explore the advantages of a **wet dust collector**. Let us put our century-plus of experience to work for you. We are ready to help you achieve your clean air goals. [Contact us to select the right wet dust collector for your application](https://www.slyinc.com/products/wet-scrubbers/) and experience the difference that expert engineering and unwavering commitment to quality can make. **Categories:** Air Filter --- ### [A Deep Dive into Filter Bags for Dust Collection Systems](https://www.slyinc.com/blog/a-deep-dive-into-filter-bags-for-dust-collection-systems/) **Published:** August 20, 2025 **Author:** slyinc **Content:** Filter bags are the backbone of any dust collection system, keeping industrial operations clean, safe, and compliant. The right filter bag improves air quality and boosts system efficiency. Understanding the properties of different filter bags can help optimize the performance of your facility and reduce costs. ## Choosing the Right Filter Bag Material for Your Application ### **Woven Cotton and Polyester (CT) Filter Bags** [Woven Cotton filter bags](https://www.slyinc.com/products/fabric-filter-media-options/cotton/) operate up to 180°F and are ideal for shaker-type collectors. They’re perfect for cleaning rooms, woodworking, and handling ambient air in cement and rock product applications. While they offer good abrasion resistance and excellent clean-down capabilities, they have poor chemical resistance and high flammability. Choose plain or fire-retardant finishes for optimal performance. ### **Polyester (PE) Filter Bags** [Polyester filter bags](https://www.slyinc.com/products/fabric-filter-media-options/polyester/) can handle temperatures up to 275°F, making them popular for pulse jet baghouses in many nuisance dust applications. They offer excellent resistance to chemicals, abrasion, and dry heat. Available in various finishes like singed and glazed, polyester bags provide superior dimensional stability and are ideal for ambient and dry heat applications. ### **High Efficiency (SlyHE) Filter Bags** [SlyHE High Efficiency filter bags](https://www.slyinc.com/products/fabric-filter-media-options/high-efficiency-felts/) use micro-pore-sized fibers to capture fine pollutants. Suitable for fine, uniform dusts, these bags achieve emissions below 1 mg/m³. Available in regular and high-temperature (Aramid) versions, SlyHE offers tenfold efficiency compared to conventional felts, extending bag life and reducing maintenance costs. ### **Polypropylene (PP) Filter Bags** [Polypropylene filter bags](https://www.slyinc.com/products/fabric-filter-media-options/polypropylene/) operate up to 170°F and are excellent for general applications requiring chemical and moisture resistance. They offer high strength, good cake release, and minimal moisture absorption. These filter bags are ideal for environments with both acids and alkalis, except strong hydroxides at high temperatures. Polypropylene bags come in plain, singed, and glazed finishes, ensuring versatile and reliable dust collection. ### **Acrylic (AC) Filter Bags** [Acrylic filter bags](https://www.slyinc.com/products/fabric-filter-media-options/acrylic/) handle temperatures up to 260°F and excel in dryers, eand process with heat and moisture. They offer superior resistance to most acids and excellent performance with organic solvents. Although more costly than polyester or polypropylene, acrylic bags provide high acid resistance and durability. Choose from plain, singed, or glazed finishes to enhance cake release and filtration efficiency. ### **Aramid (MX) Filter Bags** [Aramid filter bags](https://www.slyinc.com/products/fabric-filter-media-options/aramid/) operate up to 375°F, making them suitable for electric arc furnaces, high-temperature dryers, and cupolas. They resist most alkalis and organic solvents but degrade with mineral oxides and water vapor. Available in plain, singed, and glazed finishes, Aramid bags offer excellent durability and flexibility, ideal for harsh, high-temperature industrial applications. ### **Fiberglass (FG) Filter Bags** [Fiberglass filter bags](https://www.slyinc.com/products/fabric-filter-media-options/fiberglass/) withstand up to 500°F and are perfect for cement kilns, power plants, and electric furnaces. They offer excellent acid resistance but are vulnerable to hydrofluoric acid and certain salts. Due to poor flex abrasion qualities, fiberglass bags require a 20 vertical wire support cage in tubular forms. Available with PTFE membrane finishes, they are best for extreme temperature environments. ### **P-84® (PM) Filter Bags** [P-84® filter bags](https://www.slyinc.com/products/dry-dust-collector-filter-bags/filter-bag-finishes/) operate at 500°F and are ideal for smelters, coal-fired boilers, and incinerators. Non-flammable and good hygroscopic resistant, they offer extended bag life in low pH settings and resist flex abrasion better than fiberglass. Available in singed, glazed, and PTFE membrane finishes, P-84® bags enhance efficiency and durability, making them suitable for demanding high-temperature applications. ### **PPS (Polyphenylene Sulfide) Filter Bags** [PPS filter bags](https://www.slyinc.com/products/fabric-filter-media-options/pps/) handle up to 375°F and are perfect for coal-fired boilers, cement mills, and asphalt plants. They provide excellent resistance to acids and alkalis and perform well in high-moisture environments. PPS bags are ideal for applications requiring robust chemical resistance and effective dust control under tight emissions standards and are available in singed, glazed, and high-efficiency designs ### **Teflon® (TX) Filter Bags** [Teflon® filter bags](https://www.slyinc.com/products/fabric-filter-media-options/teflon/) endure up to 500°F and are used in severe chemical environments like coal-fired power plants and chemical reactors. They offer exceptional chemical resistance and superior abrasion resistance compared to other fibers. Available in woven and felt finishes, Teflon® bags require a 20 vertical wire support cage for tubular forms. Although costly, they provide excellent durability and filtration performance for extreme applications. ## **Let the Experts Help** The filter bag you choose can significantly impact the efficiency and longevity of your dust collection system. Whether you’re dealing with high temperatures, abrasive dust, or tight emission standards, there’s [a filter bag](https://www.slyinc.com/products/fabric-filter-media-options/) that will meet your specific needs. If you’re unsure which filter bag best fits your operation, [reach out to Sly](https://www.slyinc.com/contact/) today. Our team of experts is ready to help you navigate your options and find the perfect solution to keep your facility running smoothly. **Categories:** Baghouse --- ### [When should I get a wet scrubber instead of a baghouse?](https://www.slyinc.com/blog/when-should-i-get-a-wet-scrubber-instead-of-a-baghouse/) **Published:** August 16, 2016 **Author:** p1ws **Content:** Though dry dust collectors are the most popular form of air pollution control (APC), there is no single answer to today’s APC problems. In many cases, a wet scrubber may work better than a baghouse, even for dry dust. A wet scrubber is a device designed to remove a contaminant from an air stream using a scrubbing fluid or solution. The contaminants can be solids, liquids, or gases, and the solution is water-based and non-aqueous. Some common contaminants wet scrubbers are most capable of removing include: | **Contaminant** | **Ideal contaminant size** | **Examples** | |---|---|---| | Gases (molecular size) | <0.008 microns | Hydrochloric acid, sulfur dioxide | | Fumes (solids particulate) | <1 micron | Metallurgical | | Dust (solid particles) | >1 micron | Minerals, cement, flour, etc. | | Mist (liquid particles) | .01-10 microns | Oil, acid, caustic, etc. | | Droplets (liquid particles) | >10 microns | Sprays | [![Sly Scrubber 1](https://www.slyinc.com/wp-content/uploads/2024/08/Sly-Scrubber-1-210x300.jpg "| Sly Air Pollution Control")](https://www.slyinc.com/wp-content/uploads/2024/08/Sly-Scrubber-1.jpg) If you are considering using a wet scrubber over a baghouse, consider the following situations in which a wet scrubber is clearly the best choice: 1\) The contaminant is not a particle. It may be gases such as sulfur dioxide, ammonia, or hydrochloric acid, or it may be odors or mists. 2\) The particles are larger. 3\) The gas stream to be cleaned is too hot. 4\) The gas stream to be cleaned is too wet. 5\) The dust is hygroscopic. 6\) The pollutant is explosive or flammable. In these situations, you may want to consider using a wet scrubber over a baghouse. However, every facility is different and requires a customized solution that works best for its operations. For further questions or inquiries regarding a specific situation, give Sly a call at 866-721-3545. One of our trained representatives will be on hand to assist in finding the APC solution that works best for you. [Contact](https://www.slyinc.com/contact/) [Baghouse](https://www.slyinc.com/blog/category/baghouse/), [Blog](https://www.slyinc.com/blog/category/blog/), [Dust Collector](https://www.slyinc.com/blog/category/dust-collector/), [Wet Scrubber](https://www.slyinc.com/blog/category/wet-scrubber/) **Categories:** Baghouse, Blog, Dust Collector, Wet Scrubber --- ### [Filter Fabric Feature | Discover the Benefits of Polyester Felt](https://www.slyinc.com/blog/filter-fabric-feature-discover-the-benefits-of-polyester-felt/) **Published:** August 25, 2015 **Author:** p1ws **Content:** [![polyester felt](https://www.slyinc.com/wp-content/uploads/2024/08/img-polyester-felt2.jpg "img-polyester-felt2 | Sly Air Pollution Control")](https://www.slyinc.com/wp-content/uploads/2024/08/img-polyester-felt2.jpg) **Blog Highlights** - Polyester felt is the most common filter bag media used today. - Excellent for dry‑heat applications and chemical exposure compared to many synthetics. - Offers strong abrasion and chemical resistance, with dimensional stability and low flammability. - Not suitable for moist‑heat environments or high concentrations of strong alkalis. - Selecting the right media boosts filter life, reduces downtime, and improves overall system performance. --- ## Why Polyester Felt Matters in Dust Collection When it comes to filter bags in baghouses or dry dust collectors, the choice of fabric media is critical. [Polyester felt ](https://www.slyinc.com/products/dry-dust-collector-filter-bags/polyester-pe/)sits at the top of the list for many applications. It combines durability, high performance, and broad compatibility—especially in dry-heat and moderate-chemical-load environments. ## Key Advantages of Polyester Felt ### Dry Heat Resistance Polyester felt is especially suited for applications where exhaust temperatures remain within normal operational ranges. Because it tolerates dry heat and resists degradation, it outperforms many alternative synthetics in these conditions. [slyinc.com+1](https://www.slyinc.com/blog/filter-fabric-feature-discover-the-benefits-of-polyester-felt/?utm_source=chatgpt.com) ### Chemical & Abrasion Resistance It offers very good resistance to chemicals, abrasion, and dry‑heat degradation. It remains stable under most mineral and organic acids and offers good resistance to oxidizing agents and many solvents. [slyinc.com+1](https://www.slyinc.com/products/dry-dust-collector-filter-bags/polyester-pe/?utm_source=chatgpt.com) ### Dimensional Stability & Low Flammability Polyester felt maintains its shape under load, resists shrinkage or distortion, and has a lower flammability risk compared to many other filter fabrics. These traits make it reliable for long‑term service. [slyinc.com](https://www.slyinc.com/blog/filter-fabric-feature-discover-the-benefits-of-polyester-felt/?utm_source=chatgpt.com) ## Limitations & When to Avoid Polyester Felt Although strong, polyester felt isn’t perfect for every scenario. Key limitations include: - Sensitivity to moist heat or humidity—hydrolytic degradation may occur. - Not recommended for processes involving high concentrations of strong alkalis at elevated temperatures. - Limited effectiveness in extremely corrosive or high‑temperature applications compared to specialty fabrics. [slyinc.com](https://www.slyinc.com/blog/filter-fabric-feature-discover-the-benefits-of-polyester-felt/?utm_source=chatgpt.com) Understanding these boundaries helps avoid premature filter failure and drives better performance. ## Choosing the Right Filter Media: Step‑by‑Step 1. **Map your process conditions** – Examine exhaust gas temperature, moisture content, dust chemistry, and abrasion levels. 2. **Compare media properties** – Align your conditions with the strengths of polyester felt (dry heat, moderate chemical exposure, abrasion resistance). 3. **Check for exclusion zones** – If moist heat, heavy alkalis, or extreme corrosion are present, consider alternative media. 4. **Evaluate lifecycle cost** – A higher‑cost media may reduce maintenance and downtime in the long run. 5. **Plan for maintenance and monitoring** – Ensure your collector and monitoring systems support the media’s expected performance. --- ## FAQs **Q: What makes polyester felt filter media so widely used?** A: It balances cost, performance, and durability for many standard dust collection applications. Its dry‑heat and chemical resistance make it versatile. **Q: Can I use polyester felt in a high‑moisture environment?** A: It’s not ideal. Polyester felt is weak under moist heat conditions. For high humidity or wet exhausts, you may need a different media. **Q: How does filter media selection affect downtime and maintenance?** A: Choosing the right media helps maintain airflow, minimizes pressure drop, and extends bag life—reducing maintenance cycles and increasing uptime. **Q: Is polyester felt suitable for all collector types?** A: Generally, yes for standard temperature and dust conditions. But in very demanding environments (high heat, strong alkalis, severe corrosion), you may need a specialty media. --- ## Partner with Sly for Optimized Filter Fabric Solutions At **Sly**, we’ve been engineering advanced dust collection systems for over a century. Our experts help you choose the right filter fabric media, such as polyester felt, and design the system for your specific process conditions. Enhance system efficiency, improve filter life, and reduce maintenance with our custom solutions. **[Request a quote today](https://www.slyinc.com/contact/request-a-quote/)** and let us help you optimize your dust collection system. [Contact Us](/contact/) Last Updated: October 2025 **Categories:** Air Filter, Dust Collector, Polyester Felt, Polyester Felt Filter --- ### [Prepare Your Industrial Manufacturing Facility for Fall](https://www.slyinc.com/blog/prepare-your-industrial-manufacturing-facility-for-fall/) **Published:** September 2, 2015 **Author:** p1ws **Content:** [![man in a factory](https://cdn2.hubspot.net/hubfs/2026920/Imported_Blog_Media/ISS_5452_01565.jpg "Engine room maintenance | Sly Air Pollution Control")](https://cdn2.hubspot.net/hubfs/2026920/Imported_Blog_Media/ISS_5452_01565.jpg) As the temperature begins to get cooler and the days start getting shorter, there’s no denying that Fall is on its way. For many, Fall marks the beginning of the busiest season of the year, when kids go back to school, and those of us in the manufacturing industry begin our push to make the months of September, October, and November lucrative before winter arrives. While summer is still here, why not use these tips to prepare your industrial manufacturing facility for its best fall yet! **Take Inventory & Stock Up** There’s nothing that can impede productivity and output like discovering that you’re out of a component or material you need to fulfill incoming orders. Waiting on back-ordered shipments to arrive can hold up your productivity and result in unsatisfied customers. Why not take the last few days of summer to take inventory of everything you might need and place orders for what you’re running low on. Starting off the fall with a full stock will give you peace of mind and help your business stick to its commitment to fast turn around times. **Step Up The Safety** Nothing is worse than illness or injury in the workplace, especially when most that occur could have easily been prevented! Don’t let your company fall victim to the decreased morale and output caused by illness or injury. Instead, take measures to improve the cleanliness and safety of your facility. Begin by making cleanliness an initiative if it isn’t already. Reward workers for keeping a tidy workspace and make vacuuming a daily task to ensure that the floor doesn’t become a hazard. Don’t forget about the most important part of manufacturing facility safety; air quality! Check your dust collection system regularly and be sure to keep a back stock of dust collector replacement bags. Remember, the cleaner the air, the healthier and more energetic your workers will be, yielding improved morale and increased production speed. **Update SOPs** A change in season can be a great opportunity for a change of policies. Begin by gathering your workers and starting a discussion about which SOPs are working, and which might need some updates. When you give your workers the opportunity to share their ideas for improved operating procedures, you’ll be surprised by the valuable information you get. If your team doesn’t enjoy public speaking, print your question on a large sheet of paper, leave out pencils and paper, and put out a box for them to leave their anonymous comments in. Use the feedback in developing new guidelines for the upcoming season. Let your team know that you used their ideas and they’ll be much more likely to accept and appreciate the new practices. Whether or not fall is your busy season, these easy tips will help you get the most from the months between summer and winter. With increased focus on inventory, safety, and SOPs, this may be your company’s best fall yet! [Contact Us](https://www.slyinc.com/contact/) [Dust Collector](https://www.slyinc.com/blog/category/dust-collector/), [Dust Collector Replacement Bags](https://www.slyinc.com/blog/category/dust-collector-replacement-bags/), [Industrial Dust Collector](https://www.slyinc.com/blog/category/industrial-dust-collector/) **Categories:** Dust Collector, Dust Collector Replacement Bags, Industrial Dust Collector --- ### [Particulate Control Solutions for Lithium Processing](https://www.slyinc.com/blog/particulate-control-solutions-for-lithium-processing/) **Published:** October 1, 2025 **Author:** slyinc **Excerpt:** Lithium is the backbone of today’s battery-powered world, from electric vehicles to smartphones. As demand rises, so do the challenges of controlling airborne particulates. Lithium dust isn’t just messy—it’s reactive, abrasive, and harmful to both people and products. **Content:** ## Blog Highlights - Lithium dust is ultrafine, abrasive, and chemically active, requiring specialized control. - Effective systems protect worker health, preserve product quality, and support compliance. - [Cyclones](https://www.slyinc.com/products/dust-collectors/cyclone-dust-collector/), baghouses, and [wet scrubbers](https://www.slyinc.com/products/industrial-wet-scrubbers/) each play key roles in different processing stages. - Smart sensors and advanced materials are improving reliability and efficiency. - Strategic placement and proactive maintenance maximize system performance. - Sly brings 100+ years of experience, including decades in [lithium processing](https://www.slyinc.com/industries/lithium/). --- ## The Role of Particulate Control in Lithium Processing Lithium is the backbone of today’s battery-powered world, from electric vehicles to smartphones. As demand rises, so do the challenges of controlling airborne particulates. Lithium dust isn’t just messy—it’s reactive, abrasive, and harmful to both people and products. Well-designed particulate control systems protect workers, safeguard purity, and keep facilities compliant with strict environmental standards. ## Unique Challenges in Lithium Processing Lithium dust often forms during mining, crushing, milling, drying, and packaging. Its risks include: - **Health hazards**: inhalation can irritate lungs, eyes, and skin; chronic exposure may cause long-term conditions. - **Product contamination**: even small impurities can compromise high-purity lithium compounds. - **Regulatory issues**: uncontrolled emissions may result in costly fines and shutdowns. ## Benefits of Effective Dust Control Solutions An effective strategy offers measurable advantages: - **Protect product value** – capture and recycle dust, minimizing costly material loss. - **Improve compliance** – simplify meeting OSHA, EPA, and environmental standards. - **Increase uptime** – prevent equipment fouling, clogs, and safety-related stoppages. ## Advanced Technologies in Particulate Control ### Cyclone Separators Best for removing coarse particles early in the process. Their low-maintenance design reduces the burden on downstream systems. ### Baghouse Filters High-efficiency fabric filters capture ultrafine dust during drying, grinding, and packaging. Sly’s TubeJet® systems provide continuous cleaning and reliable airflow. ### Wet Scrubbers Ideal for sticky, hot, or corrosive dust environments. Multi-stage scrubbers can neutralize particles and gases while cooling the air. ## Innovations Transforming Dust Collection - **Smart systems** monitor airflow, pressure drop, and particle load in real time. - **Predictive alerts** help schedule maintenance before failures occur. - **Durable filter media** and corrosion-resistant materials extend system life in abrasive environments. ## Designing and Implementing Solutions ### Tailored to Your Facility No two lithium operations are alike. We customize systems for airflow, temperature, and dust profiles—whether for pilot labs or full-scale production plants. ### Strategic Placement Capturing particulates at the source prevents contamination and reduces duct runs. Systems integrate smoothly into existing lines without major downtime. ## Best Practices for Ongoing Performance ### Maintenance & Inspections - Schedule filter checks and system cleaning regularly. - Use smart sensors for real-time monitoring and service alerts. ### Training & Safety Operators should understand lithium dust hazards, proper handling, and emergency response protocols. A trained workforce ensures both safety and efficiency. ## Emerging Trends in Lithium Dust Control - **Sustainability**: energy-efficient motors and low-emission systems reduce carbon impact. - **AI-driven adjustments**: automated settings respond to real-time dust levels. - **Closed-loop recovery**: capture and recycle lithium dust to reduce waste and improve profitability. --- ## FAQs **Why is lithium dust so difficult to control?** Lithium particles are ultrafine, chemically active, and abrasive, making them harder to filter than standard industrial dust. **What’s the most effective system for lithium dust?** Baghouses are often the core solution, supported by cyclones for coarse dust and wet scrubbers for corrosive or high-heat conditions. **Can captured lithium dust be reused?** Yes. Many facilities now recycle captured dust to reduce waste and recover valuable product. **How often should filters be replaced?** It depends on dust load and system type, but predictive monitoring can alert you before performance drops. --- ## Partner with Sly for Proven Solutions At Sly, we bring over a century of engineering expertise and more than two decades of hands-on experience in lithium processing. Our custom systems improve safety, protect purity, and keep facilities competitive. **Ready to upgrade your dust collection?** [Request a quote](/contact/request-a-quote/) today, and let’s design a solution built for your operation. **Categories:** Dust Collection System, Lithium --- ### [Efficient Dust Management for Fly Ash Handling](https://www.slyinc.com/blog/efficient-dust-management-for-fly-ash-handling/) **Published:** October 15, 2025 **Author:** slyinc **Excerpt:** Fly ash plays a major role in industries like power generation, cement, and agriculture. While valuable, it is feather-light and easily carried by air currents. Storage, transfer, and processing often send particles airborne—making dust control central to safety, compliance, and profitability. **Content:** ## Blog Highlights - Fly ash dust is light, abrasive, and challenging to contain. - Effective control protects workers, equipment, and nearby communities. - Sly designs custom dust collection systems tailored to ash’s unique properties. - Benefits include compliance, efficiency, and new revenue from recycled ash. - Future trends point toward smarter, sensor-driven systems and stricter regulations. --- ## Why Fly Ash Dust Control Matters [Fly ash](https://www.slyinc.com/industries/fly-ash/) plays a major role in industries like power generation, cement, and agriculture. While valuable, it is feather-light and easily carried by air currents. Storage, transfer, and processing often send particles airborne—making dust control central to safety, compliance, and profitability. ## Challenges in Managing Fly Ash Dust ### Key Properties of Fly Ash - Fine and dry, behaving more like smoke than sand. - Travels long distances on air currents. - Settles slowly, coating surfaces and equipment. ### Health and Environmental Impact - Workers face respiratory irritation and long-term risks like silicosis. - Communities near plants are vulnerable to airborne particulates. - Indoor air quality drops quickly without proper containment. ### Operational Consequences - Dust coats motors, conveyors, and ducts. - Causes clogs, premature wear, and unexpected shutdowns. - Raises cleaning and replacement costs. ### Regulatory Compliance - EPA and local emission standards grow stricter every year. - Noncompliance risks fines and reputational damage. ## Dust Control Solutions from Sly ### Our Expertise With more than 150 years in dust collection, Sly designs systems that meet real-world industrial challenges. ### Advanced Dust Collection Systems - **[CTR Dry Dust Collectors](https://www.slyinc.com/products/dust-collectors/tubejet-baghouse-dust-collectors/ctr-cbr-cylindrical-pulse-jet-collectors/)**: Handle heavy ash loads and high-temperature environments. - **[Bulk Solids Loading Spouts](https://www.slyinc.com/products/industrial-bulk-solids-loading-spouts/)**: Contain fugitive dust at transfer and loading points. ### Custom Engineering We tailor every system to your numbers—airflow, temperature, dust load, and material behavior—choosing the right filter media, hopper design, and cleaning cycles. ### Supporting Compliance Our solutions help facilities stay under permitted emission levels, reducing risk during inspections while protecting worker health. ## Benefits of Implementing Sly Systems ### Enhanced Workplace Safety Cleaner air means fewer respiratory complaints, less absenteeism, and improved worker morale. ### Improved Operational Efficiency Effective dust control lowers equipment wear, minimizes downtime, and keeps production on track. ### Sustainable Practices Captured ash can be repurposed in concrete, cement, or soil amendments—turning waste into revenue. ## Future Trends in Fly Ash Dust Collection ### Smarter Systems IoT-enabled dust collectors now integrate sensors, dashboards, and automated cleaning for predictive maintenance and real-time monitoring. ### Stricter Regulations Tightening emission standards will require more advanced filtration and reporting systems. Facilities that upgrade now are better prepared for future compliance. --- ## FAQs About Fly Ash Dust Collection **Why is fly ash dust so difficult to control?** Because it is ultrafine and lightweight, fly ash becomes airborne easily and spreads quickly without targeted collection systems. **What health risks are associated with fly ash exposure?** Workers exposed to fly ash may face respiratory irritation, asthma, and long-term conditions like silicosis if dust is not properly contained. **Can fly ash dust control systems pay for themselves?** Yes—by reducing downtime, extending equipment life, and enabling ash reuse in cement and construction, systems often deliver measurable ROI. **What type of dust collector is best for fly ash?** Baghouse systems and CTR Dry Dust Collectors are highly effective, often paired with prefilter cyclones or loading spouts for complete control. **How do I know if my system meets regulations?** Regular monitoring, inspections, and upgrading to EPA-compliant collectors ensure facilities meet emission standards and avoid fines. --- ## Cleaner Air Starts Today Fly ash will remain a cornerstone of [energy and construction industries](https://www.slyinc.com/industries/), but its dust challenges don’t have to limit your operation. At **Sly Inc.**, we’ve been solving dust collection problems for over 150 years. Whether you need a retrofit, new installation, or compliance strategy, our experts are ready to help. 👉 **[Request a quote today](https://www.slyinc.com/contact/request-a-quote/)** to explore how Sly can design a system that keeps your facility safe, efficient, and compliant. **Categories:** Fly Ash Dust Control --- ### [Managing Carbon Black Particulates with Custom Solutions](https://www.slyinc.com/blog/managing-carbon-black-particulates-with-custom-solutions/) **Published:** November 10, 2025 **Author:** slyinc **Excerpt:** We patented the first cloth dust collector more than a century ago—and we’ve been innovating ever since. Unlike catalog sellers, we base every recommendation on real plant studies and field experience. **Content:** ## Blog Highlights - Carbon black dust is ultra-fine, combustible, and highly abrasive. - Effective collection systems reduce fire risk, protect workers, and extend equipment life. - Custom dust collectors like baghouses and cartridge systems adapt to each facility’s process. - Cleaner air improves compliance, safety, and production uptime. - Sly brings 150+ years of dust control expertise to carbon black processing. --- ## Why Carbon Black Dust Control Matters Carbon black is essential to industries like rubber, plastics, inks, and coatings. It strengthens tires, improves product durability, and enhances pigmentation. But its benefits come with challenges. Each particle is microscopic, floats like smoke, and spreads quickly through the air. Without proper controls, facilities face: - **Health and safety risks** – inhalable dust harms lungs and eyes. - **Fire and explosion hazards** – carbon black dust is combustible. - **Equipment damage** – abrasive particles shorten machine life. - **Compliance issues** – strict emission standards leave no room for error. Managing these risks requires more than off-the-shelf filters. It demands systems designed for carbon black’s unique properties. ## Key Challenges in Carbon Black Handling ### Ultra-Fine Particle Size Carbon black particles measure in microns. Their lightweight nature overwhelms filters and escapes through weak seals. ### Combustibility and Fire Risk Even a small spark can ignite a dust cloud. Explosion protection must be built into system design. ### Abrasive Nature Carbon black wears down screws, mixers, and bearings, increasing repair costs and downtime. ## Our Custom Dust Collection Approach At Sly, we design systems around your process—not the other way around. We evaluate airflow, temperature, and dust load, then recommend the right solution. - **[STJ Rectangular Pulse Jet Baghouses](https://www.slyinc.com/products/dust-collectors/tubejet-baghouse-dust-collectors/stj-sbr-square-series-pulse-jet-collectors/)** – handle high temperatures and allow easy bag changes without tools. - **[CTR & CBR Cylindrical Collectors](https://www.slyinc.com/products/dust-collectors/tubejet-baghouse-dust-collectors/ctr-cbr-cylindrical-pulse-jet-collectors/)** – compact footprint, low pressure drop, and efficient fine dust capture. - **[Dust-Tight Bulk Loading Spouts](https://www.slyinc.com/products/industrial-bulk-solids-loading-spouts/)** – keep product transfers sealed and fugitive dust contained. - **[Specialized Filter Media](https://www.slyinc.com/products/dry-dust-collector-filter-bags/)** – selected for chemical compatibility and durability in abrasive environments. Every unit ships pre-wired and pre-tested for faster installation and smoother startup. ## Benefits of a Custom System - **Cleaner Air & Safer Workplaces** – reduces airborne dust, improving health and confidence. - **Extended Equipment Life** – less abrasive buildup means longer service life for mixers, bearings, and seals. - **Higher Productivity** – less downtime for cleaning translates into more throughput. - **Compliance Confidence** – documented dust collection supports audits and regulatory inspections. ## Why Work with Sly We patented the first cloth dust collector more than a century ago—and we’ve been innovating ever since. Unlike catalog sellers, we base every recommendation on real plant studies and field experience. Our long history in [carbon black processing](https://www.slyinc.com/industries/carbon-black/) means we know how to balance durability, performance, and safety. --- ## FAQs: Carbon Black Dust Collection **Q: Why is carbon black dust so hard to control?** A: Its ultra-fine particle size makes it behave like smoke, requiring specialized filters and tight seals to capture effectively. **Q: Is carbon black dust dangerous?** A: Yes. It poses respiratory risks and is combustible, making explosion protection a critical part of system design. **Q: What type of dust collector works best for carbon black?** A: Pulse jet baghouses and cartridge collectors are most common, but the best system depends on your plant’s airflow, load, and temperature. **Q: Can dust control improve productivity?** A: Absolutely. Cleaner equipment runs longer, downtime is reduced, and production speed increases. --- ## Cleaner Air Starts Here Carbon black will always be dusty—but it doesn’t have to rule your plant. With Sly’s custom dust collection systems, you can protect workers, reduce fire risks, extend equipment life, and improve compliance. **Ready to take control of carbon black dust?** [Contact Sly today](https://www.slyinc.com/contact/) for a proposal that turns dust collection from a cost into a competitive advantage. **Categories:** Dust Collection Equipment, industrial applications --- ### [Detecting Leaks in Your Baghouse System Through Dye Testing](https://www.slyinc.com/blog/detecting-leaks-in-your-baghouse-system-through-dye-testing/) **Published:** April 25, 2016 **Author:** p1ws **Content:** Leaks in a baghouse system can be detrimental to facility operations by causing loss in product and endangering workers. Keeping your dust collection equipment in proper operating condition is essential to maintaining compliance with EPA and OSHA regulations as well as maximizing product recovery. If you believe you may be suffering from a leak in your dust collector, start by visually inspecting the clean-air-plenum to find the source of the dust leak.  If you cannot easily determine the source of the leak, you can conduct a dye test. Sly’s Leak Seeker dye test uses fluorescent powders which glow under black light to making finding leaks easy. **The procedure for this test is as follows:** - Deactivate the baghouse cleaning mechanism while still operating the exhaust fan. - Locate an inlet point upstream of both the fan and the baghouse. Note: you may have to weld a 3” or 4” pipe coupling onto an existing duct to accomplish this. - Feed the Leak Seeker powder into the system in an amount equal to one-half pound per 1,000 square feet of filter cloth for new filter bags. If you are testing filter bags that have been in service, use one pound per 1,000 square feet of cloth. - Allow five minutes for the leak seeker powder to work its way through the system. - Stop the fan. - Enter the clean air side of the baghouse or compartment being tested and shine the Leak Seeker light on all seal points. The illuminating leak seeker powder will clearly identify problem areas. If you operate a top entry pulse jet baghouse which exposes the clean air side to direct sunlight, the Leak Seeker test should be run in darkness. - After your inspection and subsequent repair work, you may need to retest with a contrasting Leak Seeker color to ensure that all leaks were repaired properly. **Tip**: Shutting down the shaking or pulse cleaning mechanism for a short period before inserting the Leak Seeker powder will enhance detection results. This allows the dust cakes to build-up, increasing the pressure between the dirty and clean air sides of the baghouse, encouraging the Leak Seeker powder to find the points of least resistance – the leaks. Also note that although Leak Seeker powder is highly reflective and illuminating, it is not radioactive. It does not contain any inorganic phosphorus, lead, mercury, or heavy metals of any kind. It also does not contain formaldehyde. Leak Seeker incorporates varying particle sizes to minimize fabric bleed-through with a mean particle size of 62 microns. It is available in highly vibrant and reflective orange, pink, green and yellow. Each color is suited for different applications. | **Color** | **Applications** | |---|---| | Pink | Good in most industries | | Orange | Good in all industries except those where iron oxide is present | | Green | Good in aluminum, cement, limestone, Cogen, and utility industries; excellent contrasting color for pink and orange | | Yellow | Good for most industries, except cement, limestone, asphalt, flyash, and where sulfur-based dust is present | Leak Seeker can be used in all baghouse types with operating temperatures up to 550°F (288°C). It is important to choose an appropriate color for your specific application, as well as keeping a contrasting color on-hand for repetitive test. The objective is to choose a color that will not blend in with process dust color. Utilizing Sly’s Leak Seeker system as a part of your regular baghouse maintenance program can help avoid costly and unscheduled shutdowns. Our service crews rely on the Leak Seeker system – yours should too. For more information, call Sly Inc. at 866-721-3545 and a representative will help you obtain and use your own kit to get your collector back up and running as quickly as possible. [Contact Us](https://www.slyinc.com/contact/) [Baghouse System](https://www.slyinc.com/blog/category/baghouse-system/), [Dust Collector](https://www.slyinc.com/blog/category/dust-collector/) **Categories:** Baghouse System, Dust Collector --- ### [The Importance of Wet Scrubber Efficiency](https://www.slyinc.com/blog/the-importance-of-wet-scrubber-efficiency/) **Published:** March 10, 2022 **Author:** p1ws **Content:** [Wet scrubbers ](https://www.slyinc.com/products/wet-scrubbers/)remove particulates, vapors, and gases from the exhaust stream of a process. The goal for a wet scrubber is to remove over 99% of pollutants and particles. The smaller the particles in the waste stream, the more difficult the particles are to remove. ## What is the Efficiency of a Wet Scrubber? Efficiency begins with the selection of the wet scrubber. Different types of wet scrubbers offer different levels of efficiency. If the particulate present is relatively large, say 10 microns, then the type of scrubber needed will be different from the type of scrubber used in an application dealing with 1-micron particulate.![wet-product-information-message-3-the-perfect-wet-scrubber-for-your-needs​](https://www.slyinc.com/wp-content/uploads/2024/08/wet-product-information-message-3-the-perfect-wet-scrubber-for-your-needs​-2.jpg) First, let’s have a short review of the operating principles of a wet scrubber. A wet scrubber mixes a water solution with exhaust gases. The water entraps particles like dust and smoke, removing them from the waste stream. Water-soluble gases are also absorbed into the water and removed. A wet scrubber is all about making contaminants run into a water droplet. An example of a low-efficiency wet scrubber is rain. We all know that after it rains, the air smells cleaner, and that’s because falling raindrops ran into something on their way down… dust and odors. Scrubbers create a high gas velocity and put water droplets in the way. The higher the speed, the more efficient the collection, just as driving a car at 70 miles per hour collides with more bugs than a car driving at 10 miles per hour. Wet scrubbers use different methods to create a zone where water droplets and contaminants collide. ## Venturi: The Most Efficient Wet Scrubber The most efficient wet scrubber is the venturi type. Venturi scrubbers are the go-to scrubber for high-end, demanding scrubbing applications. They atomize their scrubbing fluid to entrap fine particulate and mists better. A flow of water is introduced just above the venturi throat, causing the gas and water to converge in a turbulent manner. The pressure drop of the venturi and turbulence, causes atomized water droplets to form. Small droplets have a large surface-area-to-volume ratio, enabling them to collect more particles per volume of water. These tiny droplets enable the scrubber to achieve collection efficiencies of 99 percent on particles as small as 1 micron in diameter. For particles 5 microns and larger, efficiency may increase to 99.8 percent. The Venturi scrubber design requires a higher pressure drop than other types of wet scrubbers, on the order of 12-40 inches water column. A powerful exhaust fan is needed to create the pressure drop. ## Impinjet Wet Scrubber Efficiency An Impinjet wet scrubber is also a high efficiency (99%) scrubber for particles about 5 to 10 microns and larger. Its design gives ample opportunity for contaminants and water to interact. The gas passes a liquid spray section that entraps the larger particles. Then the gas passes through impingement plates, baffles that carry a flow of scrubbing liquid like a puck on an air hockey table. Combined with high-speed airflow, the baffles create tiny water droplets roughly 100 microns in diameter that entrap the smaller particles. The droplets fall and are removed as the water drains from the chamber. Gases and vapors are absorbed and can be removed to any concentration by adding more baffles. A fixed blade mist eliminator ensures that droplets are eliminated before the gas is vented or returned to the process. Impinjet scrubbers require less water and operate with minimal pressure drop compared to Venturi scrubbers. This translates into lower energy operating costs. They are resistant to fouling, and they have capacities as high as 200,000+ CFM, more capacity than the Venturi scrubbers that Sly offers having up to 76,000+ CFM capacity. While the initial cost of a Venturi scrubber is similar to an Impinjet scrubber, the energy use will cost four to five times more compared to an Impinjet scrubber. Occasionally we run into applications that need extremely efficient pollution control. We have a Venturi/Impinjet combination scrubber that can reach collection efficiencies of over 99.99% for such cases. ## Eductor Venturi Scrubbers A particular type of Venturi wet scrubber is called an Eductor. Eductor wet scrubbers remove particles and soluble gases using a high-pressure liquid focused into a venturi throat. The flow of the liquid induces the gas flow. This eliminates the need for an exhaust fan or blower to move the gas stream through the scrubber. The eductor design reduces complexity and lowers energy costs. Because of the force of the water, Eductor scrubbers are particularly well-suited for use with sticky particulate and to remove gases that decompose on contact with water. ## Packed Tower Scrubbers Packed Tower scrubbers provide chemical scrubbing of gaseous contaminants such as ammonia, sulfur dioxide, hydrogen sulfide, and hydrogen chloride. The exhaust gas flows upward through a bed of loose plastic or metal packing that provide a large surface area. The bed is continuously wetted from above and the liquid drips down through the packing. While the packing is not designed for particulate removal, the buildup of particulate matter can reduce efficiency. This is why Packed Tower scrubbers can be preceded by a Venturi scrubber that removes the particulate before gas enters the Packed Tower. ## Monitoring Wet Scrubber Efficiency A stack test measures scrubber efficiency. This is the test that the EPA does. It measures the amount of particulates or undesirable gases vented into the atmosphere after the scrubber has processed the gas stream. At the same time, the inspectors also record the liquid flow, differential pressure, and temperature. These factors influence the efficiency of the system. The EPA will tell the company that the airflow and the differential pressure must remain in a certain range or the company will be out of compliance. This is done to prevent companies from later lowering flow and pressure to save energy at the expense of increased pollution. As part of normal operation, managers should monitor flow and differential pressure in their wet scrubbers. A drop in differential pressure may indicate the equipment is flooding. A drop in flow may indicate clogging or that a worker turned a wrong valve. Scrubber efficiency relates to the type of equipment and vice versa. For complete information on the kinds of wet scrubbers that Sly designs, builds and services, get our [Wet Scrubber Buyer’s Guide](https://www.slyinc.com/pdfs/WetScrubber.pdf). [Contact Us](https://www.slyinc.com/contact/) [Wet Scrubber](https://www.slyinc.com/blog/category/wet-scrubber/) **Categories:** Wet Scrubber --- ### [The Importance of Having a Maintenance Program For Your Dust Collector](https://www.slyinc.com/blog/the-importance-of-having-a-maintenance-program-for-your-dust-collector/) **Published:** April 1, 2022 **Author:** p1ws **Content:** ## **Improve Safety, Performance and Reliability With Our Maintenance Checklist.**   The importance of having an inspection/maintenance program for your dust collector cannot be understated. Depending on the issue, dust collector downtime caused by maintenance issues can be catastrophic, costing a company days– or even weeks– of missed production while making repairs and/or waiting for critical components like filters to arrive. Because of this, it’s crucial to keep spare parts on hand, conduct daily monitoring, and perform scheduled maintenance on your dust collectors. Learn how to tailor a comprehensive preventative maintenance program to your dust collection system for a better Baghouse in our video on YouTube, here: Now is the perfect time to ensure you have parts ordered and have run through our checklist to keep things running smoothly, so check out our [Maintenance Checklist](https://info.slyinc.com/maintenance-checklist-for-a-better-baghouse-download-1), as well. This inclusive checklist will help you keep your dust collector in tip-top shape. [Find the Right Parts](https://www.slyinc.com/replacement-parts/) [Dust Collector Inspection](https://www.slyinc.com/blog/category/dust-collector-inspection/), [Dust Collector Maintenance](https://www.slyinc.com/blog/category/dust-collector-maintenance/) **Categories:** Dust Collector Inspection, Dust Collector Maintenance --- ### [Which to Choose: An ePTFE Membrane vs. a PTFE Finish?](https://www.slyinc.com/blog/which-to-choose-an-eptfe-membrane-vs-a-ptfe-finish/) **Published:** May 2, 2022 **Author:** p1ws **Content:** One of the questions we are often asked is “In the case of filters, what’s the difference Between an ePTFE Membrane vs. a PTFE Finish?” ## What is the Difference Between PTFE and ePTFE? Commonly known as Teflon®, PTFE, which is short for polytetrafluoroethylene, is a synthetic fluoropolymer of tetrafluoroethylene (that’s the TFE part). In addition to being hydrophobic, which means it repels water, PTFE is resistant to high temperatures; it’s unaffected by most chemicals and compounds, and it offers a surface to which almost nothing will stick. Due to these characteristics, PTFE is of interest in various dust collection scenarios. This leads us to the two PTFE-related questions we are asked most often here at Sly: “What’s the Difference Between an ePTFE Membrane vs. a PTFE Finish?” and “Which is best—an ePTFE Membrane or a PTFE Finish?” The first question is easy to answer, but the answer to the second question is, “It depends.” ## Types of Dust Collection![Dry filters image](https://www.slyinc.com/wp-content/uploads/2024/08/Dry-filters-image-6.jpg) For [dry dust collectors](https://www.slyinc.com/products/), which use baghouse filters, there are two common options–shaker systems (these are old systems that are becoming rarer every day), in which the collection bag is shaken to remove caked-on particles, and pulse jet (also known as compressed air cleaning), in which a high-pressure blast of air is used to remove dust from the bag. Most baghouses use long, tubular-shaped bags made of woven or felted fabric as a filter medium. For applications with relatively low dust loading and gas temperatures of 250 °F (121 °C) or less, pleated, nonwoven cartridges are also sometimes used as filtering media instead of bags. ## Types of Filter Bag Media Concerning the materials used to create the filter media, many options are available. These materials tolerate different temperatures, provide different levels of collection efficiency, support different abilities to withstand abrasive materials, and offer different chemical compatibilities. Media options (which may be provided in woven and/or felted form) include cotton, polyester, high-efficiency micro denier felts, polypropylene, nylon, acrylic, aramid, fiberglass, P84 (polyimide), PPS (polyphenylene sulfide), and even Teflon® (fluorocarbon fiber). (You can discover more details about [filter bag media options](https://www.slyinc.com/products/fabric-filter-media-options/) on our website.) ## Types of Filter Bag Finishes Once you’ve selected a media for your filter bags, your next choice will be whether or not to apply a finish. Using an appropriate finish (or combination of finishes in some instances) can significantly improve your bag life, cake release, and protection from harsh application conditions. Types of finishes include singed, glazed, fire retardant, acid-resistant, spark-resistant, antistatic, and oleophobic, to name but a few. PTFE may be applied as a finish in two different ways—as a thin membrane or as a coating/bath. (You can discover more details about [filter bag finishes](https://www.slyinc.com/products/fabric-filter-media-options/filter-bag-finishes/) on our website.) ### Types of PTFE Finishes Let’s start by considering a baghouse filter in the form of a felted polyester bag. When the bag is in use, some of the dust particles will work their way into the media. This is called depth loading filtration. When the bag is shaken, or a compressed air pulse is actuated to remove caked-on particles, some of the particles will fall into the hopper and be removed from the system, but others will remain embedded in the fabric. Over time, more and more particles will become entrained deep into the pores of the media and begin to blind the filter media, which will degrade the filter’s performance in future cycles. An ePTFE membrane may be applied to regular and pleated bags formed from woven and felted media. Such a membrane is microscopically thin (think “plastic food wrap” to provide a visualization) and is applied in the factory to the outside surface of the bag. In this case, the membrane will greatly increase the efficiency of the bag (where “efficiency” in this context refers to the number and size of the dust particles being filtered). If an unfinished polyester bag obtains 99% efficiency for particles of two microns and larger, for example, adding an ePTFE membrane may result in 99.99% efficiency for particles down to 1 micron and smaller, depending on the dust and operating conditions. Furthermore, the slick, non-stick properties of the ePTFE membrane mean that shaking the bag or applying a pulse jet will cause most caked-on dust to be removed and eliminate or minimize depth filtration and blinding for the life of the membrane (these membranes will deteriorate over time; also, to maximize their longevity, they should not be used in conjunction with abrasive dust particles). Although an ePTFE membrane is a type of finish, some people regard the term “PTFE finish” as bathing or spraying a liquid coating of PTFE onto the filter media. In this case, the media’s fibers are individually encapsulated in PTFE. A PTFE finish of this type will not increase the filtration efficiency, and the bag may still become depth-loaded, but if a pulse jet is employed, the bag will clean more easily due to the slick coating the PTFE provides on the fibers. ## Which is Best: An ePTFE Membrane or PTFE Finish? A bag augmented with an ePTFE membrane may see an increase in efficiency as much as 10X or more, will be easy to clean, and won’t suffer from depth loading. Also, an ePTFE membrane is advantageous for sticky, oily dust. By comparison, a non-membrane bag treated with a PTFE finish won’t experience an increase in efficiency and will still become depth loaded, but it will be easier to clean than if the finish were omitted. In the past, in some cases, the choice between an ePTFE membrane and a PTFE finish was driven by cost because membranes were expensive, but the price of membrane bags has fallen in recent years. All this may prompt the question: “If you can’t beat an ePTFE membrane for efficiency and for preventing depth loading, and if the price of a membrane bag has fallen so it costs only slightly more than a bag with a PTFE finish, then why would you *not* opt for the ePTFE membrane?” The answer is that you can’t use a membrane in an environment where the dust is abrasive because—if you do—you won’t have a membrane for long. In the case of abrasive dust, a PTFE finish is the way to go. Having said this, selecting the most appropriate combination of filter media and filter finish (or finishes) is a multi-dimensional problem, and the optimal answer is dependent on many factors. The best solution is to [ask the experts at Sly](https://www.slyinc.com/contact/) to evaluate your unique dust collection situation and offer their expert advice. [Contact Us](https://www.slyinc.com/contact/) [Dust Collection Equipment](https://www.slyinc.com/blog/category/dust-collection-equipment/), [Dust Collection System](https://www.slyinc.com/blog/category/dust-collection-system/) **Categories:** Dust Collection Equipment, Dust Collection System --- ### [Aftermarket Parts for Dust Collection Systems](https://www.slyinc.com/blog/aftermarket-parts-for-dust-collection-systems/) **Published:** July 3, 2024 **Author:** p1ws **Content:** [A dust collection system](https://www.slyinc.com/products/) keeps your equipment efficient, safe, and compliant with air quality regulations. These systems are the unsung heroes in many industries, from woodworking shops to chemical plants. Like any machinery, the components in these systems wear out over time. That’s where Sly Aftermarket Parts come into play. eSly aftermarket parts present a cost-effective solution for extending the life of your dust collection system. They match or even exceed the performance of the original components. Opting for [Sly Aftermarket Parts ](https://www.slyinc.com/products/replacement-parts/)gives you the dual benefit of affordability and quality. ## Checklist for Maintaining Your Dust Collector Maintaining your dust collector keeps it operating at peak efficiency while protecting your workplace. Use this comprehensive maintenance checklist to keep your system running smoothly: ### Daily Inspections - **Pressure Drop:** Measure the pressure drop across filters. A steady increase can indicate potential issues. - **Hopper Discharge:** Check the hopper discharge system for blockages or material buildup to avoid clogs. - **Visible Emissions:** Inspect for visible emissions, signaling a breach or torn filter bag. Act immediately to fix this. ### Weekly Inspections - **Cleaning System:** Examine the cleaning mechanisms like pulse cleaning, reverse air, or shakers. Make sure they operate correctly to maintain airflow. - **Auxiliary Equipment:** Check for functionality of auxiliary equipment such as exhaust fans, rotary valves, and conveyors. - **Log Entries:** Keep detailed logs of weekly inspections for performance tracking and diagnostics. ### Monthly Inspections - **Filter Media:** Inspect filter media for tears, excessive dust cakes, or blinding. This step helps maintain optimum filtering efficiency. - **Exhaust Fan:** Perform a thorough inspection of the exhaust fan, checking for unusual vibrations or noises that could indicate underlying problems. ## Common Types of Equipment That May Need Replacement Over time, components of your dust collection system may wear out or need upgrading. The most common types of aftermarket parts that need replacement are: ### Dry Filters [Dry filters](https://www.slyinc.com/products/replacement-parts/dry-filters/), including those made from Nomex®, polyester, and PTFE, trap airborne dust. Regular replacement ensures your system maintains high efficiency and compliance with air quality standards. ### Cartridge Filters [Cartridge filters ](https://www.slyinc.com/products/replacement-parts/cartridge-filters/)come in various materials like cellulose/polyester blends and PTFE-treated options. Their pleated design provides excellent filtration but needs periodic replacement to maintain airflow and efficiency. ### Diaphragm & Solenoid Valves These valves control the pulse-cleaning system of your dust collector. Brands like Goyen, Asco, and Tae-Ha offer[ replacement valves](https://www.slyinc.com/products/replacement-parts/) that optimize system performance. ### Pleated Bags [Pleated bags](https://www.slyinc.com/products/replacement-parts/pleated-bags/) offer more media than conventional bags and are surface-loaded for easier maintenance. Over time, they need replacing to keep the system working efficiently. ### Timer Boards [Timer boards](https://www.slyinc.com/products/replacement-parts/dust-collector-timer-boards/) control the cleaning cycles of pulse jet dust collectors. When they malfunction, replacement boards keep the cleaning system operating correctly. ### Filter Cages Made of galvanized wire or stainless steel, [filter cages](https://www.slyinc.com/products/replacement-parts/dust-collector-cages/) support the filter bags. Regular inspection and replacement of damaged cages are necessary to prevent bag wear and maintain filtering efficiency. ### Liquid Filtration Components [Liquid filtration components](https://www.slyinc.com/products/replacement-parts/liquid-filters/) like high-efficiency liquid filter bags and pleated filter cartridges play a crucial role in liquid dust collection systems. ## Enhancing System Longevity with Sly Aftermarket Parts Maintaining the longevity and efficiency of your dust collection system doesn’t have to be an overwhelming task. You can keep your equipment in high working order with the right [aftermarket parts](https://www.slyinc.com/products/replacement-parts/) and a well-structured maintenance program. Using high-quality components such as dry filters, cartridge filters, and diaphragm valves will keep your system running efficiently. For a comprehensive guide on maintaining your baghouse system, consider downloading the [maintenance checklist](https://www.slyinc.com/resources/white-papers/maintenance-checklist-for-a-better-baghouse/) to keep up with inspections and necessary upkeep. **Categories:** Dust Collection Replacement Parts --- ### [Optimizing Operations: Dust Collection System Replacement Parts](https://www.slyinc.com/blog/optimizing-operations-dust-collection-system-replacement-parts/) **Published:** July 9, 2024 **Author:** p1ws **Excerpt:** Dust collection systems keep the air clean in manufacturing processes. To ensure optimal performance, they should be regularly maintained with timely part replacements. Investing in the right parts extends equipment life, which helps facilities meet air quality regulations. **Content:** [Dust collection systems](https://www.slyinc.com/products/dust-collectors/) keep the air clean in manufacturing processes. They should be regularly maintained with timely part replacements to ensure optimal performance. Investing in the right parts extends equipment life, which helps facilities meet air quality regulations. ## Understanding Dust Collection Systems Dust collection systems capture, filter, and remove airborne dust particles generated during industrial processes. This helps maintain a clean and safe working environment. ### Why They’re Used Industrial facilities use dust collection systems for several reasons: ### Health and Safety Inhaling dust can pose serious health risks to workers, including respiratory issues and long-term illnesses. Dust collectors help mitigate these hazards by trapping airborne particles before they can be inhaled. ### Regulatory Compliance Many industries must adhere to strict environmental regulations regarding air quality. Dust collection systems ensure compliance with laws and standards set by agencies like OSHA (Occupational Safety and Health Administration) and the EPA (Environmental Protection Agency). ### Product Quality Dust can contaminate products during manufacturing, leading to defects or compromised quality. Efficient dust collection ensures that products consistently meet quality standards. ### Operational Efficiency Accumulated dust can interfere with machinery and equipment, leading to breakdowns and reduced efficiency. Proper dust collection minimizes equipment wear and tear, extending its lifespan. ## Importance of Replacement Parts Replacement parts for dust collection systems ensure peak efficiency and maintain air quality. Maintaining your dust collector helps optimize operations and avoid costly downtime. ### Impact of Quality Parts on System Longevity High-quality replacement parts extend the lifespan of dust collection systems. Inferior parts wear out quickly, causing frequent replacements and potential failures. ### Enhancing Air Quality with Proper Maintenance Maintaining air quality is a primary concern for industrial managers. Dust poses health risks and affects product quality. An adequately maintained dust collector helps facilities meet OSHA and EPA standards. ### Boosting Productivity Through Efficient Operations Efficiency equals productivity. A well-maintained dust collection system prevents dust-related interruptions. Proactive part replacement reduces unexpected breakdowns and improves product quality. ### Proactive Part Replacement for Safety and Compliance Safety is a top priority. Dust accumulation poses fire and explosion hazards. Timely part replacement prevents dust buildup due to a faulty collector. ## Types of Replacement Parts Each dust collector component plays a critical role in the system’s functionality. Here’s a closer look at key replacement parts and their importance. ### Dry Filters [Dry filters](https://www.slyinc.com/products/replacement-parts/dry-filters/) capture dust particles and prevent them from entering the air. These filters come in various materials, including Nomex®, polyester, polypropylene, Ryton®, P-84, cotton, PTFE, and Teflon®. The choice of material depends on your specific industrial needs and environmental conditions. ### Cartridge Filters [Cartridge filters](https://www.slyinc.com/products/replacement-parts/cartridge-filters/) offer an alternative to traditional bag filters. They provide efficient filtration with easy maintenance. These filters come in materials like cellulose/polyester blends, flame retardant options, carbon-impregnated, hydrophobic/oleophobic treatments, and PTFE-treated variations. ### Diaphragm & Solenoid Valves [Diaphragm and solenoid valves](https://www.slyinc.com/products/replacement-parts/dust-collector-valves/) help activate compressed air pulses in pulse jet dust collection systems. These valves ensure that the cleaning cycles operate efficiently. ### Envelope Filters [Envelope filters](https://www.slyinc.com/replacement-parts/envelope-bags/) maximize space efficiency in dust collectors by packing more filter cloth into smaller spaces. These rectangular bags offer high filter cloth density per cubic foot. ### Pleated Bags [Pleated bags](https://www.slyinc.com/replacement-parts/pleated-bags/) provide several advantages over traditional filter bags. They feature surface loading for easy cleaning and a lower pressure drop. With 300% to 500% more media than conventional bags, they optimize filtration efficiency. ### Timer Boards [Timer boards](https://www.slyinc.com/replacement-parts/dust-collector-timer-boards/) automate cleaning cycles in pulse jet dust collectors. They help improve operational efficiency by ensuring timely cleaning of filter media. ### Filter Cages [Filter cages](https://www.slyinc.com/replacement-parts/dust-collector-cages/) support filter bags and extend their life by providing structural integrity. They are made from materials like 11-gauge galvanized wire or stainless steel (304 and 316), with epoxy-coated options available. ### Liquid Filtration [Liquid filtration components](https://www.slyinc.com/replacement-parts/liquid-filters/) are used in applications requiring fine pollutant filtration in liquid slurries. Options include deep pleat series, high-efficiency liquid filter bags, standard felt and mesh bags, oil absorbing bags, and IBF compact style bags. ## Keep Your Operations Running Smoothly Maintaining your dust collection system with high-quality replacement ensures optimal performance, enhances air quality, and maintains a safe working environment. By understanding the importance of these components and replacing them, you can extend the lifespan of your equipment. This proactive approach boosts productivity and ensures regulatory compliance. Investing in reliable replacement parts keeps your operations running smoothly and minimizes unexpected downtimes. For a comprehensive selection of replacement parts for your dust collector, [review our available replacement parts](https://www.slyinc.com/products/replacement-parts/). Keep your dust collection system in top shape and ensure a safer, more efficient workplace. [Learn About Replacement Parts](https://www.slyinc.com/products/replacement-parts/) [Dust Collection Replacement Parts](https://www.slyinc.com/blog/category/dust-collection-replacement-parts/), [Dust Collector Repair](https://www.slyinc.com/blog/category/dust-collector-repair/) **Categories:** Dust Collection Replacement Parts, Dust Collector Repair --- ### [Maintaining Purity: Dust Collection Solutions for Pharmaceuticals and Nutraceuticals](https://www.slyinc.com/blog/maintaining-purity-dust-collection-solutions-for-pharmaceuticals-and-nutraceuticals/) **Published:** July 29, 2024 **Author:** p1ws **Content:** The [pharmaceutical and nutraceutical industries](https://www.slyinc.com/industries/pharmaceuticals/) require purity at every step of the product’s journey. Producing these products involves handling various powders and compounds, generating significant amounts of dust. This dust poses risks ranging from contamination to explosions. Advanced dust collection solutions maintain cleanliness standards, ensure product integrity, and help manufacturers meet regulatory requirements. ## The Importance of Dust Collection in Pharmaceuticals and Nutraceuticals Dust collection protects workers’ health by capturing harmful particles before they become airborne. It prevents cross-contamination between different products, essential in facilities that handle multiple substances. Dust hazards in these industries can be explosive, toxic, or harmful to workers and products. Effective dust control mitigates these risks and maintains a safe working environment. ## Challenges in Dust Collection The unique challenges faced in dust collection for pharmaceuticals and nutraceuticals demand specialized solutions: Due to their toxicity, high-potency pharmaceutical dusts require stringent controls. Exposure risks include inhalation or skin contact. Combustible dusts necessitate precautions to avoid explosions during the collection process. Cross-contamination from escaping dust can contaminate other production areas, posing safety and sanitation risks. Processes generating vapor or moisture-laden dust present filtration challenges due to clogging. Even non-toxic dusts like those from vitamins can cause health issues and affect hygiene. ## Phases of Dust Management Effective dust management involves three key phases: capture, transport, and filtration/evacuation. - **Capture:** Positioning equipment at the source prevents airborne dispersion. - **Transport:** Efficient ducting systems transport captured particles. - **Filtration/Evacuation:** Dust is either filtered for reuse within the facility or safely evacuated externally. ## Sly’s Specialized Solutions Sly Inc., with its extensive experience in manufacturing industrial dust collectors, offers tailored solutions that address these challenges. ### TubeJet Pulse Jet Collectors These collectors provide efficient cleaning; no tools are required for bag changes. They are suitable for high temperatures and pressures, making them ideal for harsh industrial environments. ### Cartridge Dust Collectors Cartridge collectors are perfect for dry, free-flowing dust. They offer easy maintenance and require low headroom, making them versatile for various facility layouts. ### Reverse Air Collectors These energy-saving options use low-pressure reverse air for filter bag cleaning. They are an excellent choice when energy efficiency is a priority. ## Applications Across the Industry From chemical processing to metal finishing, Sly’s dust collection systems find applications across various industries. In pharmaceuticals and nutraceuticals, they are valuable during processes like: - Tablet pressing - Capsule filling - Batch mixing - Milling - Granulation - Pelletizing - Spheronization - Drying - Weighing - Packaging Each process generates significant dust that must be controlled to maintain product quality and worker safety. ## Regulatory Compliance Compliance with OSHA and NFPA standards is non-negotiable in these industries. Sly’s equipment helps meet these regulations by providing explosion venting and specialty explosion-proof features where needed. ## Customization for Specific Needs With dust collection solutions, one size does not fit all. We customize our equipment to fit specific applications without significantly increasing costs. This flexibility ensures that each system meets the unique needs of its environment while maintaining efficiency and effectiveness. ## Enhancing Air Quality Sly’s advanced filtration systems ensure that air quality remains high by efficiently removing particulates from the air: - HEPA filters capture even the smallest particles that other filters might miss. - Activated carbon filters remove odors and volatile organic compounds (VOCs) from the air. - Electrostatic precipitators (ESPs) use an electric charge to remove fine particles from airflow. By incorporating these technologies into their systems, Sly helps maintain pristine air quality within pharmaceutical manufacturing environments. ## Investing in Innovation Ensuring purity through effective dust collection maintains high product standards and creates safer work environments. Ready to improve your facility’s air quality? [Request a quote](https://www.slyinc.com/contact/request-a-quote/) from Sly today and take the first step towards a cleaner, safer workplace. **Categories:** Dust Collection Equipment, industrial applications --- ### [The Wet Scrubber's Role in Managing Dust](https://www.slyinc.com/blog/the-wet-scrubbers-role-in-managing-dust/) **Published:** September 6, 2024 **Author:** p1ws **Content:** In industrial air pollution control, wet scrubbers are key for dust collection, efficiently capturing fine particles and gases. Unlike dry filtration methods, wet scrubbers use liquid to remove contaminants from the air, making them particularly effective in handling high-temperature or sticky dust particles that can challenge traditional baghouses or cartridge collectors. By leveraging water or other liquids, wet scrubbers not only reduce the risk of fires and explosions but also provide an adaptable and sustainable approach to maintaining cleaner air in a variety of industrial settings. ## Understanding Wet Scrubber Technology Wet scrubbers use liquid to capture and neutralize particulates and gases from industrial exhaust streams. Inducing gas flow through a liquid medium, wet scrubbers remove contaminants before they can be released into the atmosphere. ### Types of Wet Scrubbers for Dust Management Choosing the right type of wet scrubber is essential for effective dust management. Here’s a closer look at various wet scrubbers and their unique advantages. #### Impinjet® Wet Scrubbers [Impinjet® Wet Scrubbers](https://www.slyinc.com/products/industrial-wet-scrubbers/impinjet-wet-scrubber/impinjet-wet-scrubbers-application-examples/) collect particulates and absorb vapors and gases. They offer high efficiency, with up to 99% collection rates at 5 microns. These scrubbers use minimal water and have low-pressure drops, making them cost-effective. With capacities reaching over 200,000 CFM, they are suitable for large-scale operations. #### Venturi Wet Scrubbers [Venturi Wet Scrubbers](https://www.slyinc.com/products/industrial-wet-scrubbers/venturi-wet-scrubber/venturi-wet-scrubber-application-examples/) excel at collecting fine particulate and mists. They atomize scrubbing liquid into fine droplets to trap particles. With adjustable throats for performance optimization and capacities up to 76,000 CFM per unit, these scrubbers are ideal for high-temperature and corrosive applications. #### Eductor Wet Scrubbers [Eductor Wet Scrubbers](https://www.slyinc.com/products/industrial-wet-scrubbers/eductor-wet-scrubber/eductor-wet-scrubber-application-examples/) remove soluble gases and particulate matter using a high-pressure liquid focused into a venturi throat. This design eliminates the need for separate exhaust fans or blowers. Suitable for small applications requiring ventilation without capital equipment permits, these scrubbers efficiently handle sticky or decomposing gases. #### Packed Tower Wet Scrubbers [Packed Tower Wet Scrubbers](https://www.slyinc.com/products/industrial-wet-scrubbers/packed-tower-wet-scrubber/) are designed for chemical scrubbing of gas stream contaminants. Using internal packing to provide a large wetted surface area, these scrubbers facilitate intimate contact between contaminated gas and scrubbing liquid. Custom-engineered for specific applications, they handle a wide range of airflows. #### FRP Wet Scrubbers [FRP (Fiberglass Reinforced Plastic) Wet Scrubbers](https://www.slyinc.com/products/industrial-wet-scrubbers/frp-wet-scrubbers/) capture and neutralize hazardous components from exhaust gases with high efficiency—up to 99% capture rates for contaminant gases. Lightweight yet durable, FRP scrubbers resist corrosion and UV degradation while offering cost-effective solutions for various industrial needs. ## Benefits of Using Wet Scrubbers for Dust Collection ### Wet scrubbers provide several benefits when managing dust: - **High Efficiency:** Capture fine particulates and gaseous pollutants with high collection rates. - **Versatility:** Suitable for various industrial applications. - **Gas Absorption:** In addition to dust collection, wet scrubbers can simultaneously remove harmful gases and vapors, improving overall air quality. - **Fire and Explosion Prevention:** By using liquid as a medium, wet scrubbers significantly reduce the risk of dust fires and explosions, making them ideal for handling volatile or flammable materials. - **Cost-Effective:** Low maintenance costs due to fewer moving parts. - Environmental Compliance: Help meet stringent air quality standards. - **Safety:** Reduce fire hazards associated with combustible dust. By incorporating wet scrubber technology into dust management systems, industries can improve air quality while minimizing operational costs. ## Key Industries where Wet Scrubbers are commonly used Below are some industries that commonly use wet scrubbers: - **Chemical Manufacturing:** Wet scrubbers are used to control emissions of harmful gases and fine particulates generated during chemical processing. - **Power Generation**: Essential in coal-fired power plants for controlling sulfur dioxide (SO₂) and particulate emissions from flue gas. - Pharmaceuticals: Used to manage dust and chemical fumes in the production of medicines and other pharmaceutical products. - **Metals and Mining:** Effective in capturing dust and metal fumes during smelting, refining, and other metallurgical processes. - Pulp and Paper: Utilized to control emissions from pulping, bleaching, and paper-making processes, including the removal of acidic gases and particulate matter. - **Food and Beverage Processing:** Applied in processes that generate dust or odors, such as grain milling, sugar refining, and coffee roasting. - **Textile Manufacturing:** Helps in controlling fibrous dust and chemical emissions from dyeing and finishing operations. - Waste Incineration: Key for controlling particulate and gaseous pollutants emitted during the incineration of municipal and hazardous waste. - **Automotive Manufacturing:** Used in processes such as painting and coating to control overspray and volatile organic compounds (VOCs). - Oil and Gas Refining: Essential in controlling emissions of sulfur compounds and other pollutants during the refining of petroleum products. These diverse applications showcase the versatility of wet scrubbers as a resource for dust control and/or gas absorption. ## Taking the Next Step Wet scrubber technology is crucial for industries aiming to balance operational efficiency with environmental responsibility. Incorporating advanced wet scrubbers can reduce emissions and improve air quality. Effective dust management unlocks numerous benefits in construction, agriculture, manufacturing, and other sectors. Ready to optimize your dust control systems? [Contact Sly, LLC ](https://www.slyinc.com/contact/)today to request a quote or request a Wet Scrubber Buyer’s Guide to discover how our tailored solutions can meet your specific needs. **Categories:** Wet Scrubber --- ### [Six Fabric Filters for Regular Temperature Applications](https://www.slyinc.com/blog/six-fabric-filters-for-regular-temperature-applications/) **Published:** May 2, 2015 **Author:** p1ws **Content:** **Blog Highlights** - Explore six common fabric filter media ideal for applications below 275 °F. - Learn each fabric’s temperature limits, strengths, and best-fit industries. - Get clear guidance on when not to use certain filter materials. - Understand how chemical and abrasion resistance affect filter performance. - Find the best match for your dust type, airflow, and process environment. --- ## Why Filter Media Selection Matters Fabric filter media are the foundation of effective dust collection. Choosing the right one helps maintain airflow, extend bag life, and reduce emissions. For operations in the *regular temperature* range—ambient to 275 °F—[these six fabrics](https://www.slyinc.com/products/dry-dust-collector-filter-bags/) cover nearly all general-purpose applications. ### 1. Cotton (Woven) **Operating temperature:** Up to 180 °F (continuous) **Best for:** Shaker collectors, cleaning rooms, woodworking, cement, and rock product handling. **Strengths:** - Excellent clean-down capability—static charge doesn’t trap dust. - Good flex and flat abrasion resistance. **Limitations:** - Poor resistance to chemicals, mineral acids, and oxidizing agents. - High flammability—avoid when sparks or high heat are present. **Summary:** A solid choice for ambient, dry environments where cost-effectiveness and easy cleaning are priorities. ### 2. Polyester **Operating temperature:** Up to 275 °F (continuous) **Best for:** Dry heat applications; the most widely used media in modern baghouses. **Strengths:** - Excellent dimensional stability and low flammability. - Good resistance to abrasion and dry heat degradation. - Performs well against most acids and oxidizing agents. **Limitations:** - Not suitable for moist heat or phenolic compounds. - Vulnerable to hydrolytic degradation in humid conditions. **Summary:** A versatile, durable workhorse for most standard dust applications. ### 3. Polypropylene **Operating temperature:** Up to 170 °F (continuous) **Best for:** Processes with chemical or moisture attack where other fibers fail. **Strengths:** - Excellent resistance to acids and moisture. - Smooth fibers aid cake release and resist blinding. - Virtually zero moisture absorption. **Limitations:** - Avoid exposure to strong alkalis like sodium or potassium hydroxide at high temperatures. - Limited resistance to certain solvents (ketones, esters, chlorinated hydrocarbons). **Summary:** Reliable, moisture-resistant choice for mild temperature and chemical environments. ### 4. Acrylic (Homopolymer Acrylic Felt) **Operating temperature:** Up to 275 °F (continuous) **Best for:** Dryers, electric furnaces, aluminum smelting, and similar heat-intensive operations. **Strengths:** - Excellent acid resistance and strong resistance to hydrolysis. - Good tolerance for oxidizing agents and organic solvents. **Limitations:** - More costly than polyester or polypropylene. - Limited fabric form availability. **Summary:** A durable mid-range option offering superior chemical and temperature resistance for harsh dry environments. ### 5. Nylon (Cerex®) **Operating temperature:** Up to 250 °F (continuous) **Best for:** Highly abrasive dust collection applications. **Strengths:** - High abrasion resistance. - Strong resistance to alkalis and most organic solvents. **Limitations:** - Susceptible to degradation from mineral oxides at high concentrations and temperatures. **Summary:** Choose nylon when dust is abrasive—but avoid environments with strong mineral oxides. ### 6. High-Efficiency Felts (SlyHE, MPS) **Best for:** Fine, uniform, free-flowing dust and liquid process slurries. **Strengths:** - Micro-pore fibers capture ultra-fine pollutants efficiently. - Cost-effective alternative to PTFE membrane filters. **Summary:** A smart upgrade for fine particulate applications needing high filtration efficiency without PTFE-level cost. --- ## FAQs **Q: How do I know which filter fabric is best for my process?** A: Start with your operating temperature, moisture level, and chemical exposure. Match these to each fabric’s resistance profile. **Q: What happens if I exceed a fabric’s temperature limit?** A: The fibers may shrink, harden, or break down—leading to higher emissions and costly replacements. **Q: Can I mix filter types within one system?** A: It’s not recommended. Consistent media ensures even airflow and predictable pressure drop. **Q: Are all these fabrics compatible with pulse-jet collectors?** A: Most are, but cotton and polypropylene are more common in shaker or reverse-air systems. --- ## Partner with Sly for Smarter Dust Collection At **Sly**, we’ve been perfecting dust control for over a century. Our engineers help you match filter fabrics to your process for maximum performance and compliance. Whether you’re upgrading bags or designing a new collector, we’ll help you get cleaner air and longer bag life. **[Request a quote today](https://www.slyinc.com/contact/request-a-quote/)** to find the right media for your specific temperature, dust, and airflow conditions. [Contact](https://www.slyinc.com/contact/) Last updated: October 2025 **Categories:** Blog, Dust Filters, fabric filters --- ### [Wet Scrubbers and the Environment](https://www.slyinc.com/blog/wet-scrubbers-and-the-environment/) **Published:** April 30, 2014 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/06/wet-scrubber.jpg "wet-scrubber | Sly Air Pollution Control") **Blog Highlights** - Wet scrubbers remove particulates *and* gas-phase pollutants, supporting cleaner operations. - They help meet stricter environmental regulations while improving worker safety. - Choosing the right design (Impinjet®, Venturi, Eductor, Packed Tower) matters for efficiency. - Smart systems and maintenance determine long-term performance and cost savings. - Partnering with an experienced OEM ensures proper customization for your process needs. --- ## Why Wet Scrubbers Matter for the Environment Wet scrubbers use a liquid—often water or a chemical solution—to capture airborne dust, vapors, and gases from industrial exhaust streams. They’re a key tool in reducing emissions, controlling odors, and protecting worker health and nearby communities. By trapping contaminants early, these systems prevent pollutants from entering the atmosphere and help plants remain compliant with increasingly stringent environmental regulations. ## Types of [Wet Scrubbers](https://www.slyinc.com/products/industrial-wet-scrubbers/) & How They Work ### Impingement Plate (Impinjet®) Scrubbers Ideal for ultra-fine particulates and vapors: particles hit wetted plates and drop out of the air stream. These units deliver high efficiency for particles 5 microns and larger, using minimal water. ### Venturi Scrubbers Venturi scrubbers use high-velocity gas-liquid mixing to capture fine particles and mists. They’re excellent for high-load or challenging gas streams where other collectors may struggle. ### Eductor Scrubbers Eductor scrubbers rely on a high-pressure liquid jet to induce airflow and scrub gases or particulates—no separate exhaust fan needed. They’re a strong choice for sticky or corrosive gas streams. ### Packed Tower (Packed Bed) Scrubbers Designed for gas-phase removal—such as acid gases, sulfur dioxide, or ammonia—packed towers use a large wetted surface area to maximize contact between gas and liquid for high efficiency. ## Key Benefits of Wet Scrubber Systems - **Emission reduction** – Capture both particulate matter and gaseous pollutants before they escape. - **Worker safety** – Cleaner exhaust and lower dust exposure mean fewer respiratory risks and safer workplaces. - **Regulatory compliance** – Systems engineered to meet local, state, and federal standards. - **Process flexibility** – Can be customized for corrosive gases, high temperatures, or sticky dust loads. - **Sustainability support** – Reduce waste, enable capture of value streams, and lower your environmental footprint. ## Selecting & Maintaining Your Wet Scrubber ### Match the Equipment to Your Needs - Identify your gas or particulate load, temperature, moisture, and chemical characteristics. - Choose the scrubber type best suited for those conditions (see types above). - Ensure your supplier offers customization and design flexibility to optimize performance. ### Maintenance & Performance Monitoring - Monitor differential pressure, flow rates, and liquid levels regularly. - Inspect spray headers, packing media, recirculation pumps, and corrosion protection components. - Use sensors and automation to detect performance issues early and schedule proactive maintenance. --- ## FAQs **Q: Can wet scrubbers handle both dust and gases?** Yes — wet scrubbers are designed to capture particulate matter *and* gas pollutants by combining liquid contact with particle/gas removal mechanisms. **Q: Are wet scrubbers better than dry collectors for all applications?** Not always — for very dry, non-sticky dust loads, dry collectors may be sufficient. But when you have gas-phase contaminants, sticky dust, or explosion risks, wet scrubbers often provide superior results. **Q: How energy-intensive are wet scrubber systems?** Energy usage depends on fan power, liquid recirculation, and pressure drop. Modern designs prioritize low energy use and leverage smart controls for efficiency. **Q: What happens if I delay maintenance on a wet scrubber?** Neglected maintenance can lead to higher emissions, corrosion, plugging, increased operating costs, and potential non-compliance or shutdowns. --- ## Partner with Sly for Cleaner, Safer Operations At **Sly Inc.**, we bring over 150 years of experience in air pollution control. Our wet scrubber solutions are engineered for the unique challenges of your process—whether you’re dealing with corrosive gases, high temperatures, or sticky particulate streams. Let us help you turn dust and emissions into a compliance advantage. 🔍 **Ready to explore a custom wet scrubber solution?** [Request a quote ](https://www.slyinc.com/contact/request-a-quote/)today and take the next step toward a safer, cleaner, and more efficient facility. [Learn About Replacement Parts](https://www.slyinc.com/replacement-parts/) Last updated: October 2025 **Categories:** Wet Scrubber --- ### [Pollution Control](https://www.slyinc.com/blog/pollution-control/) **Published:** October 31, 2021 **Author:** p1ws **Content:** ## Pollution Control: How to Determine if Your Facility Needs a Dust Collector When some people see the title to this blog, their knee-jerk reaction might be something like, “Wouldn’t it be obvious if I needed a dust collector?” Well, if your employees are gasping for breath due to the amount of dust in the air, then installing a dust collector is an obvious solution, but things aren’t always this clear-cut. ![Michelin 1-DryDustCollector on Crane_273x208](https://www.slyinc.com/wp-content/uploads/2024/08/Michelin-1-DryDustCollector-on-Crane_273x208-2.jpg) In this blog, we aren’t focusing on facilities that have only recently been created or are in the process of being established. In this case, decisions regarding environmental considerations such as dust collection will almost certainly have been addressed as part of that facility’s design, certification, and commissioning process. ## Prepare for the Unexpected  Quite apart from anything else, inspectors will ensure that a new facility is compliant with any appropriate Occupational Safety and Health Administration (OSHA) standards and regulations. The same thing applies to any relevant National Fire Protection Association (NFPA) codes and standards, particularly in the case of processes that produce dust that is combustible and potentially explosive. Problems may arise, however, in the case of existing establishments. In some cases, managers may decide to raise production levels without considering the increased load on current dust collection capabilities. In other cases, a processing plant may undertake new tasks or start working with new materials that its personnel are unfamiliar with. Yet another situation involves companies operating for a long time and may not be up to date with the latest tools, technologies, codes, and standards. For example, many industrial and engineering companies predate OSHA, which Congress didn’t establish until 1971. At Sly, we specialize in dust collection solutions. Over the years, we’ve run into many situations where companies were unsure as to whether they needed a dust collector or not. In some cases, they weren’t even thinking about it until something untoward occurred. ### Remediating Environmental Pollution and Benefiting the Greater Whole One example involves a small magnet company that has been in business for nearly 120 years. The shop floor contains many machines that cut, grind, polish, and paint the pieces of metal that are to be magnetized. There wasn’t much official oversight at the time of this firm’s founding, and its operations remained largely unchanged over the years. In fact, wasn’t until the late 2000s that the company discovered it violated several health and safety regulations, one of which was the amount of dust and metal particles in the air. The current owners acted swiftly to remediate the situation, including deploying a state-of-the-art dust collection solution. Although this may not seem to be too surprising to us now, a recent analysis of the company’s personnel records revealed an unexpected benefit resulting from the addition of the dust collection system, which was substantially fewer workers taking sick days caused by what was, at that time, assumed to be colds, but what in hindsight may well have been respiratory problems caused by inhaling dust and metal particles. ## How to Save Money, Time, and Energy with a Dust Collection System This leads us to an interesting point, which is that most people regard having to install dust collection only in the context of being a financial burden, neglecting to consider the associated benefits, which include (but are not limited to) the following: - Increases workplace health and safety: If your environment is dust-free, your employees will be healthier and safer. - Increases productivity: If your environment is dust-free, your employees will be more productive. - Increases quality: Having a dust-free environment helps you to produce a better-quality product. - Reduces costs: If your dust collection solution includes recovering valuable materials, then factoring in these recovered materials may reduce the cost of the product. - Reduces maintenance: The fact that you don’t have to replace your HVAC filters and/or service your HVAC system as often results in significant maintenance cost savings. Our own company began as a manufacturer of foundry equipment in 1874, which means we’ve been in business for nearly 150 years. The company’s experience with dusty environments led to its development of industrial dust collection equipment. Sly holds the very first patent, issued in 1902, for a cloth-type dust collector. Now, of course, we are industry leaders in all forms of dust collection and mitigation, including dry dust collectors and wet scrubbers. One of the things we do to keep our fingers on the pulse of things is to constantly monitor what people are saying and what questions they are asking about environmental problems and dust collection. Somewhat surprisingly, our research reveals that one of the most common dust-collection-related questions asked on Google is “Do I need a dust collector?” or something similar like “How can I tell if my factory needs to install dust collection equipment?” ## How Do I Know if I Need a Dust Collector? Some of the more obvious signs that your facility could benefit from the addition of a dust collection system include (but are not limited to) the following: - You can see, smell, and/or taste the dust in the air. - Employees are taking excessive sick days for respiratory problems. - Surfaces and equipment are covered in dust. - You feel the need to “air out” the facility. - Your HVAC filters are clogged with dust. If any of these issues are familiar to you, your next question will probably be, “What type and size (capacity) of dust collector do I need?” Unfortunately, this is where things start to get tricky because many factors must be considered to arrive at the most optimal and cost-effective solution. ## Choosing a Dust Collector  Happily, you have us. With our nearly 150 years of experience in air quality control, we know what works and what doesn’t for each application. We can help guide you to the best solution based on whatever kind of dust you’re dealing with, thereby making your workplace safer, healthier, happier, and more productive. [Contact us](https://www.slyinc.com/contact/) for additional information, reach out to [your local Sly representative](https://www.slyinc.com/rep-locator/), or even [request a quote](https://info.slyinc.com/request-quote). [Contact Us](https://www.slyinc.com/contact/) [Dust Collection System](https://www.slyinc.com/blog/category/dust-collection-system/) **Categories:** Dust Collection System --- ### [Post-Fire Inspection Procedures for Your Dust Collector](https://www.slyinc.com/blog/post-fire-inspection-procedures-for-your-dust-collector/) **Published:** March 7, 2016 **Author:** p1ws **Content:** A fire in your dust collector can be both dangerous and devastating to your manufacturing facility. If a fire does occur, it’s important to repair the damage so you can resume production and take preventative steps as quickly as possible. Post-fire inspection generally looks for specific damage and the likely cause of the fire so that future fires can be prevented and avoided. [![Tubesheet](https://www.slyinc.com/wp-content/uploads/2024/08/Tubesheet-1-218x300.jpg "Tubesheet | Sly Air Pollution Control")](https://www.slyinc.com/wp-content/uploads/2024/08/Tubesheet-1.jpg) **A diagram of a PulseJet schematic, including a Tubesheet and hopper.** ## **Damage Inspection Can Be Broken Down as Follows:** - **Tubesheet** The tubesheet is prone to heat damage. If it becomes warped then the filters will not seal.  Any deviation of more than ¼” in a 24” span would be considered excessive. That is, place a two foot long straight edge at any location on the tubesheet and if the distance from “high spots” to “low spots” is over ¼” then you may have a sealing issue and the tubesheet may need to be replaced. - **Hopper** Look for accumulations of debris and, especially, molten metal in the bottom of the hopper or in any discharge equipment.  Nylon Cage Venturis may melt and cause debris to stick to the hopper sidewalls, in the hopper valley angles, or in the blades of a rotary airlock, reducing the ability for the [dust collector](/products/dust-collectors/) to discharge collected dust. Be sure to remove as much of the debris as possible out of the collector. - **Entryways** Take a look at the access doors, ports, roof hatches, and other external entry points. Search for warpage that might prevent doors and ports from properly sealing even after new gasket has been installed.  Door panels may need to be straightened or replaced if damage is excessive. - **Bolted flanges** Check any bolted flanges, paying special attention to the tubesheet to housing connection and hopper to housing connection. Replace damaged gasketing as needed. The original flange gasket over time (or due to fire heat) may become brittle, powdery, or hard. If this happens, cracks, breaks, or gaps may occur which would allow leakage of outside air and moisture to be drawn into the dust collector during operation. A good way to check door seals is to have a short, very flat piece of metal that can be slid between the flanges to check for gaps.  Another means is to look for daylight through the flange connections when inside the unit. If you find any of these gaps, replace the damaged gasketing as needed. - **Compressed air piping** Inspect clamps, hoses, tubing, and other compressed air piping parts for damage and replacement.  This can include wall grommets, Morris pipe clamps, and the diaphragm valve/solenoid valve tubing. - **Pulse Pipes** While fire damage in pulse pipes is rare, abrasive wear might be present in any dust collector that has operated for an extended period of time. Look for damage and replace as needed. [![Pulse Pipe](https://www.slyinc.com/wp-content/uploads/2024/08/Pulse-Pipe-300x225.jpg "Pulse Pipe | Sly Air Pollution Control")](https://www.slyinc.com/wp-content/uploads/2024/08/Pulse-Pipe.jpg) **A view of the pulse pipes in a dust collector.** - **Housing walls** If you find any excessive distortion or permanent deflection of the housing walls, it may negatively affect the operation of the unit. Warpage that creates contact with the installed filter bags will cause premature wear of those filters. In addition, excessive distortion of stiffeners will lower the allowable design pressure of the housing. Warped or distorted walls or stiffeners generally cannot be straightened so replacement of the housing may be required in extreme cases. - **Downstream equipment** Look at the downstream equipment, paying close attention to component parts like the fan.  Damage would most likely be confined to debris, but fan bearings could be affected if there was a fire in the fan as well or molten debris adhered to the fan blades causing an unbalanced condition. - **Rupture panels (explosion vents)** Check the rupture panels, or explosion vents, to ensure they are not damaged or weakened. Replace or repair as needed. - **Overall inspection** In general, look for anything that just “doesn’t look right”, or that might seem to cause a problem with the unit operation once it is put back into service. **Preventative Inspection:** - **Scorch damage** Look for scorch damage, or discoloration, of the paint and where this occurs. Discoloration high on the housing might mean a fire on the filter bags while low could indicate a fire that started in the hopper. For a fire that occurs in the higher reaches of the dust collector, you will need to determine the source. For example, a spark from the dryer could have started the flame or even a static electrical discharge at the filters. Grounded filters, if not already in use, may be warranted. - **Ductwork** Look for similar damage to any paint on the ductwork coming to the baghouse.  This could indicate the fire started in the ducting, or prior to the ducting, and was drawn into the baghouse by the fan action.  Isolation or suppression equipment in the ductwork might be warranted. - **Rupture panels (explosion vents)** If the baghouse experienced a fire, but not an explosion, it would not be uncommon that the rupture panels/doors did not function.  They should be inspected for damage and replaced if necessary. - **Witnesses** Talk to employees, maintenance personnel, etc. to see what their recollections are about what occurred.  The point is to try to isolate the starting point of the fire and address suppression and control at that location.  Keep in mind all equipment should be equipped with a means to isolate it from other equipment in the event of a fire or explosion. Remember that, above all, common sense is the best damage control and preventative tool you can use. If anything doesn’t seem right to you with any part of your dust collector or you are concerned about the effectiveness of your preventative measures, give Sly a call at 800-334-2957 and our Aftermarket Department will supply you with a complete list of replacement parts for your unit. [Contact Us](https://www.slyinc.com/contact/) [Dust Collector](https://www.slyinc.com/blog/category/dust-collector/), [Dust Collector Fire](https://www.slyinc.com/blog/category/dust-collector-fire/), [Dust Collector Inspection](https://www.slyinc.com/blog/category/dust-collector-inspection/) **Categories:** Dust Collector, Dust Collector Fire, Dust Collector Inspection --- ### [How to Design Screw Conveyors on Baghouses Handling Explosive Dust](https://www.slyinc.com/blog/how-to-design-screw-conveyors-on-baghouses-handling-explosive-dust/) **Published:** April 11, 2016 **Author:** p1ws **Content:** Nearly all dusts are combustible, except those known to be inert and having a Kst value of zero (like limestone, fume silica and rock dust). If your company is questioning the combustible potential of a dust they are handling, it is strongly recommended to have it tested by a third party company. In conjunction with combustible dust, screw conveyors are mentioned in various National Fire Protection Association (NFPA) standards and codes, but details for their design are – for the most part – lacking. From a design standpoint, a screw conveyor attached to a dust collector hopper on an explosive dust application becomes a part of that dust collector. If venting or suppression is employed then the screw conveyor must meet the same design criteria as the baghouse. That is, the screw conveyor must meet Pred criteria of the maximum pressure allowed with venting or suppression. This means the flange connection(s) must be tight and not allow for dust leakage. Additionally, any ports or inspection openings need to be latched firmly to avoid opening during an explosion or suppressant discharge. Pressure testing of this assembled conveyor is not required by NFPA. Extended conveyors, or those that extend beyond just the dust collector discharge flange, need to comply with NFPA’s “Covered Conveyors” requirements. Based on the above, Sly recommends the following guidelines when designing screw conveyors for use under a baghouse hopper with explosive dust. ## **Recommended Design Guidelines For Baghouse Screw Conveyors:** **1. Trough thickness** – A trough thickness of 10 gauge minimum shall be used. This thickness is a practical, accepted standard appropriate for a strong conveyor. **2. Connection flanges** – Flanges can be angle iron construction or formed from the trough material, (assuming trough material is at least 10 gauge). Keep in mind angle iron construction adds significant cost to assembly and is not always appropriate for conveyor design. **3. Bearings** – Where possible, bearings should be located external to the screw conveyor. That is, you should eliminate internal hangar bearings where possible. Bearings have the potential to rub together during conveying, which can cause sparks and set fire to combustible dust. Shorter conveyors will not require bearings at all. If hangar bearings are required due to the conveyor length of 20 feet or more, they should be constructed to minimize the potential for heat generation or sparks by using non-metallic bearing material (e.g. no hard iron bearings). **4. Size** – Screw conveyors should be sized to maintain a trough loading less than 30% under maximum loading conditions when hangar bearings are required. **5. Shafts and flights** – Shafts and flights should be designed to provide a maximum deflection of ¼” under operating conditions to minimize the potential for sparks due to flight/trough contact. **6. Discharge** – The discharge on the screw conveyor should be isolated from downstream equipment to prevent the passage of combustion products, burning gases, or pressure waves. This can be achieved with a rotary airlock that should be designed to comply with the appropriate NFPA requirements for isolation valves. **7. Interlock** – Upon the sensing of a deflagration or explosion, the screw conveyor and discharge equipment should be stopped immediately. An interlock is required that will send a signal back to the PLC or DCS to disengage the motor starters for the discharge equipment. This is usually done through a temperature or pressure sensor and transmitter. **8. Grounding** – To minimize the potential for static-generated sparks, all equipment should be properly grounded at all flange connections. This includes any covers on extended conveyors. **9. Packing material** – A packing gland is a section of pipe that is larger than the shaft and is filled with non-combustible material that prevents the internal dust from blowing out of the trough end where it could ignite, or, if already burning, could trigger a secondary explosion. Packing material used in end flange packing glands should be non-combustible (aramid) where possible. If end bearings are required they should provide maximum sealing against dust intrusion. This can be best accomplished with equipment such as multiple lantern ring seals. **10. Drive motor** – NFPA, NEC, and other safety groups have set up certain “area designations” to describe the chemical make-up of areas within a plant. If the area has explosive gas or dust, then the area classification notes that and all electrical devices in that area must meet certain design criteria so that they do not create a combustion/explosion risk to the materials (dust, gas, vapor, etc.) that may be in that area. The screw conveyor drive motor should be designed for the area classification where it is located. **11. Extended screw conveyors** – Extended screw conveyors, or conveyors that extend past the collector discharge opening, must have covers that are secured in such a way that they will not release dust. This means they are typically bolted shut. They must also be designed to withstand the design Pred for the vented dust collector it is attached to, and be designed in a way that the screw conveyor loading does not exceed the maximum throughput of the rotary airlock it is connected to. **12. Zero speed switches** – Screw conveyors should be provided with zero-speed switches in explosion proof enclosures and/or motor overload switches to shut down the screw conveyor in case of plug or broken screw shaft. When screw conveyors are used in applications involving combustible materials proper design and precautions are necessary to ensure that the conveyor does not create a potential risk to the system. Following defined engineering procedures will provide this insurance. *For questions or concerns, or to order a customized screw conveyor of your own, give Sly a call at 866-721-3545 and a representative will assist you.* [Contact Us](https://www.slyinc.com/contact/) [Baghouse Screw Conveyors](https://www.slyinc.com/blog/category/baghouse-screw-conveyors/), [Dust Collector](https://www.slyinc.com/blog/category/dust-collector/), [Explosive Dust](https://www.slyinc.com/blog/category/explosive-dust/) **Categories:** Baghouse Screw Conveyors, Dust Collector, Explosive Dust --- ### [Dust Safety in the Lithium Industry](https://www.slyinc.com/blog/dust-safety-in-the-lithium-industry/) **Published:** April 28, 2023 **Author:** p1ws **Content:** According to Fortune Business Insights, the global lithium mining market is projected to grow at least 6% for the next several years. This lightweight metal is inextricably linked to modern society’s move toward a lower carbon economic model. Lithium carbonate is the most common output of either hard rock mining or high-salinity brines. Its uses range from medications to adhesives, glazes, grease and lubricants to a cement additive. However, its function within battery manufacturing is the main driver behind its increase in popularity. Once lithium is obtained from mining or brining, it requires further processing to achieve the right size and specifications for this use whether for batteries or other products. This processing, particularly milling and grinding creates fine dust, posing significant safety risks. Lithium processing operations can mitigate risk by practicing good housekeeping and maintenance and by installing dust collection systems. These measures can improve worker health and wellbeing and preserve capital equipment and infrastructure. ![lithium](https://www.slyinc.com/wp-content/uploads/2024/08/lithium-3.jpeg) ## The Properties of Lithium Dust    Lithium dust is both combustible and reactive. This fine particulate material has varying characteristics, but in general, the following factors will impact lithium dust behavior and safety measures: ### Lithium Dust Particle Size Lithium dust can have a particle size ranging from a few micrometers to several hundred micrometers in diameter, depending upon the desired usage or end application. The smaller the particles are, typically the more significant the hazard. Smaller particles can penetrate more deeply into the lungs if inhaled. In addition, the National Fire Protection Agency (NFPA) indicates that as processing methods advance, it creates smaller particles than possible in the past. This also increases the hazard. The emergence of “nanopowders” or microparticles is often associated with metals manufactured or processed as raw materials for various precision industries. The smaller the particle size, the higher the specific surface area. This specific surface increases the likelihood the particles will ignite and burn faster. Testing has demonstrated that these nanoparticles can generate an explosion without an outside ignition source. In addition, many of these nanoparticle metals burn at extremely high temperatures. For example, lithium can create a metal fire of 2,000° C or 3,632° F. ### Lithium Dust Weight Lithium dust is very lightweight, with a density of approximately 0.534 g/cm3. The lightest of all metals, it has about half the density of water. This lightweight material can easily be dispersed into the air and remain suspended for extended periods. Its suspension also increases the risk of inhalation or accumulation into a cloud ripe for combustion. ### Lithium Dust Reactivity Lithium is a highly reactive substance that responds vigorously to water, steam, or moisture in the air, producing flammable hydrogen gas. This reactivity increases the risk of explosions or fires when in the presence of ignition sources. In addition to water, lithium reacts violently with oxidizing agents, such as metal salts, strong acids, reducing agents, peroxides and more. ### Lithium Dust Color Lithium dust is typically gray or silver, making it difficult to distinguish it from other, similar color dusts. ### Lithium Dust Hazards Its reactivity and explosive potential are obvious hazards. However, lithium dust can also irritate the skin and eyes, causing chemical burns if it comes into contact with the skin. ## New Combustible Dust Standards in the Works    The NFPA is working on a new comprehensive dust standard due for release in 2025. The new Standard for Combustible Dusts, or NFPA 660, will consolidate six existing NFPA dust standards into one. Lithium is currently included in NFPA 484, Standard for Combustible Metals, Metal Powders and Metal Dusts. A lithium fire falls into Class D for combustible metals. This requires an extinguisher rated for Class D fires. Poisonous gases created when lithium combusts include lithium dioxide and lithium hydroxide. As an important note, fires may restart after being extinguished. Explosion protection measures and extra caution are recommended. Lithium processors require a high-performance, industrial dust collection system that is customizable to respond to lithium dust’s unique qualities and maintain safety. Options include reliable baghouses, wet scrubbers, cyclonic dust collectors, and loading spouts. This equipment should promote dust capture and collection, focusing on safety, material recovery and air quality. Sly LLC offers a TubeJet® pulse jet collector with a steady pressure drop for online cleaning. A full range of media choices for dust collector filters can capture up to 99% of either nuisance or process dust. Customization incorporates design modifications that can help solve some of the more common challenges with lithium dust collection and dust collector safety, including: - Air-to-cloth ratio - Inlet location and placement - Bag filter media - Custom duct work - Explosion venting and electrical systems Sly LLC has more than 100 years’ experience in industrial dust collection and expertise in lithium dust collection that has grown and expanded alongside the industry’s growth. We have worked with lithium processing operations of various types and sizes for more than twenty years. Companies count on Sly’s expertise and its discretion. Sly recognizes each lithium processing operation has a unique set of proprietary processes. To read more about the lithium processing industry and the types of dust collection systems Sly LLC can offer, [download our white paper](https://info.slyinc.com/lithium-wp). Call Sly LLC for a customized dust collection system that can help maintain the safety and efficiency of your lithium processing facilities. Author: Dave Mosinski, Regional Sales Manager Dave has been in the dust collection industry and with Sly for over 26 years. [Contact Us](https://www.slyinc.com/contact/) [Dust Collection System](https://www.slyinc.com/blog/category/dust-collection-system/), [Dust Collector](https://www.slyinc.com/blog/category/dust-collector/), [Lithium](https://www.slyinc.com/blog/category/lithium/) **Categories:** Dust Collection System, Dust Collector, Lithium --- ### [What You Need to Know About Wet Scrubbers](https://www.slyinc.com/blog/what-you-need-to-know-about-wet-scrubbers/) **Published:** November 28, 2017 **Author:** p1ws **Content:** ![Wet Scrubber for dry dust.png](https://www.slyinc.com/wp-content/uploads/2024/08/Wet-Scrubber-for-dry-dust.png) When most of us think about industrial dust collection, we think of dry dust filtration equipment. However, there are wet scrubbers that may be a better solution for controlling plant emissions and air pollution in many situations. ## The Wet Scrubber Process Wet scrubbers are systems designed to remove, clean or “scrub” contaminants from an air stream using a scrubbing fluid or solution. The contaminants can be dust, particulate, gases, oils, mists, and fumes from industrial exhaust air or gas streams. A scrubber works by intimately mixing a pollutant laden exhaust stream with a liquid such that the pollutants are captured by the liquid. The liquid can be water-based or organic-based. ## Types of Wet Scrubbers There are different scrubber designs that are based on the nature and properties of the pollutants to be captured: - **[Impinjet® Impingement Plate](https://www.slyinc.com/products/wet-scrubbers/impingement-wet-gas-scrubber/):** These clean, cool and absorb vapors and gases, and collect particulates. These are best used for applications requiring condensing and particulate removal. - **[Venturi](https://www.slyinc.com/products/wet-scrubbers/venturi-wet-scrubber/):** These scrubbers are used to collect fine particulates and liquid mists, and are used for high temperature and/or highly corrosive applications. - **[Eductor](https://www.slyinc.com/products/wet-scrubbers/eductor-wet-scrubber/):** These are designed to remove soluble gases and particulates by inducing a gas flow using high pressure liquid focused into the venturi throat. These can also be used for direct contact condensation, and to remove sticky or gummy particulates and gases which decompose upon contact with water. - **[Packed Tower](https://www.slyinc.com/products/wet-scrubbers/packed-tower-wet-scrubber/):** These are designed for chemical scrubbing of gaseous contaminants from air streams. They can handle a wide range of airflows and can ventilate harmful, toxic gas streams and exhaust clean air back to the atmosphere. ## When to Use a Wet Scrubber As mentioned above, there are types of dust and pollutants for which a wet scrubber is better than a dry collector. ### Combustible/Hazardous Dusts Wet scrubbers are a safer choice for collecting combustible dust particulates. Using water as the collection media eliminates the dust cloud and explosion potential by wetting the dust and saturating the air stream. There is no threat of an ignition source, as long as the media being used is not a combustible gas. Combustibility can be a concern when handling dry metal fines, chemicals and many organic materials. ### High Temperature Gases Wet scrubbers can handle high-temperature applications without any special design considerations or replacement parts. Many processes require extremely high temperatures, including furnaces, kilns and incinerators. Adding water into a wet scrubber system does not affect its operation, so a quench system can be employed prior to the inlet to the scrubber. The pre-quench section combined with the scrubber can handle temperatures higher than 2,000 degrees F. By comparison, conventional baghouse technology is available for temperatures up to only 550 degrees F. Dry baghouse technology at higher temperatures carries exponentially higher initial costs. ### Moisture in the Gas Stream Processes that have moisture content in their gas stream can cause havoc on dry dust collectors by causing caking on filter bags, plugging equipment and altering pressures. Wet scrubbers use water to saturate the gas stream to remove particulates, so the moist process gas doesn’t cause the problematic issues one would find with a dry dust collector. As equipment like dryers and kilns drive off moisture from the product, the air or gas used in the process carries it into the dust collector. Wet scrubbers are not affected by this moist or wet air, and do not require compressed air, insulation or auxiliary heat that are often needed for dry dust collectors used for this application. ### Particulate and Gaseous Contaminants For applications that need to remove both particulate and gaseous contaminants from the airstream before being vented to the atmosphere, wet scrubbers may be able to collect both with one piece of equipment. Dry dust collectors only collect solid particulate. You would need additional equipment to remove the gases. ## Wet Scrubber Benefits Don’t overlook the cost saving potential with using wet scrubbers. They offer: - Lower initial capital costs and maintenance costs - Better energy savings - Smaller footprint - No replacement bags needed [I Want The White Paper!](https://info.slyinc.com/guide-using-wet-scrubbers-for-combustible-dust-control-1) [Wet Scrubber](https://www.slyinc.com/blog/category/wet-scrubber/) **Categories:** Wet Scrubber --- ### [5 Ways to Increase Industrial Air Quality Control](https://www.slyinc.com/blog/5-ways-to-increase-industrial-air-quality-control/) **Published:** September 4, 2019 **Author:** p1ws **Content:** Air pollution management is important. With particulate matter linked to over 30,000 deaths a year in the US alone, air quality control systems are essential to keeping manufacturing environments cleaner and safer. The Clean Air Act clearly shows the federal pressure we all face for a cleaner (and safer) work environment, but it’s not just government legislation that guides our hands. Private investors, tech inventors, and corporations alike all want cleaner processes. The takeaway is simple: we need to increase air quality control across all industries. Here at Sly, with over a century-and-a-half’s experience in air pollution control (APC), we know just how to do it. To help the leaders of today, these are our top five ways to increase industrial air quality control: 1. **Properly Assess Your Air Quality.** Before you pick the right system, you need to know what pollutants you’re creating and the quality of your air. For instance, if you are dealing with dry particulate, you need to understand the characteristics of the dust being filtered. That all starts with a measurement of bulk density (g/cm3) and particle size distribution (μm). Bulk density data can be used for the diagnosis of re-entrainment or aid in the design of any fabric filters used in your APC equipment. Determining your particle size distribution allows you to predict APC system performance in applications where similar dusts are found. Knowing the dust’s level of abrasiveness and tendency to agglomerate will also let you know how likely it will lead to uncontrolled buildup, caking, bridging, or lumping. 2. **![evaluate-industrial-air-quality](https://www.slyinc.com/wp-content/uploads/2024/08/business-checklist.jpeg)Evaluate Your Current System.** Once you know what kind of particulate you’re dealing with, you need to measure how well your current APC system is removing or minimizing pollutants. Air quality monitoring devices are a must here, allowing you to keep a record of how your system is performing. Failure analysis tests are also important to make sure the components of your system are performing up to standards. Baghouse systems in particular benefit from regular filter bag failure analysis. Considering the five modes of filter failure – mechanical strength/wear, thermal degradation, chemical degradation, dust penetration/media blinding, and incorrect design – failure checks can diagnose the source of your problem and recommend the appropriate corrective action. Not only can this help to reduce total system operating cost, but it can also improve the performance of your filter media in terms of lower emissions and higher airflow. 3. **Choose the Right System and Customize it to Your Needs.** Every system has unique needs. Whether you choose to upgrade your current system or go with a new one, you should tailor your APC equipment to your specific industrial environment. Look for a team of experienced engineers and designers that will gauge your environment to help to anticipate problems before they happen, providing you with the right design, specs, and detailed engineering drawings for your custom system. Take a look at this [case report](https://www.slyinc.com/pdfs/Case_History_Hydrocarbon_Resin.pdf) where we replaced a worn, noncompliant unit with a custom dust collector. 4. **![air-quality-maintenance](https://www.slyinc.com/wp-content/uploads/2024/08/Close-up-of-woman-mechanic-with-yellow-helmet-in-hand-against-city-background.jpeg)Be Proactive in System Maintenance.** Nothing is worse than having a system failure due to a small, avoidable issue. Proper system maintenance requires you to regularly check up on your system, both with automated diagnostics from ambient pollution monitoring and manual performance tests from on-site engineers. No matter how you find a problem, make sure you take the proper steps to diagnose and correct it before you have to shut down production, or worse, deal with the consequences of a dust explosion. 5. **Choose the Right Partner.** With something as important as air quality control, you need a reliable partner that will take the time to make sure your APC system is the best that it can be. With our custom flexibility, meaningful emission guarantees, and trained engineers on staff, Sly is the right partner for the job. Our service to you doesn’t stop after handing off the quote. We are committed to getting you the right equipment and then helping you maintain it with our large catalog of replacement parts for all makes and models. All of these add up to one goal: better air quality. By following these steps to increase your own industrial air quality control you’ll be putting your best foot forward for a safer and cleaner work environment. [Download the Guide](https://info.slyinc.com/dry-dust-collection-system-design-guide-1) [Dust Collection System](https://www.slyinc.com/blog/category/dust-collection-system/) **Categories:** Dust Collection System --- ### [Troubleshooting Common Dust Collector Problems](https://www.slyinc.com/blog/troubleshooting-common-dust-collector-problems/) **Published:** April 4, 2016 **Author:** p1ws **Content:** Having problems with your dust collector? A faulty collector can lead to a shut-down with costly downtime and airborne dust can threaten employee health and safety. Collectors running inefficiently can increase utility costs when valves leak pricey compressed air and fans begin to work overtime to keep up with plugged bags. Below are four of the most common problems that can occur in a dry dust collection system – and how to fix them. ## Problem: The filter is not cleaning properly. **A filter that isn’t cleaning properly can lead to a high pressure drop, which may reduce the airflow at the dust pick-up points and lead to greater energy consumption. Troubleshoot with these steps:** 1. **Check the hoppers** If you don’t have a rotary valve in the hopper of your collector, make sure that the hoppers have been emptied on a regular basis. Additionally, if you do have a rotary valve, check the hopper to ensure the valve is discharging properly and material is not plugging the collector. Full hoppers may promote re-entrance of dust into the air stream, thus drastically increasing the dust load and potentially overload the dust collector. ![](https://www.slyinc.com/wp-content/uploads/2024/08/Hopper-218x300-1.jpg "Hopper-218x300 | Sly Air Pollution Control") Remember, Sly offers hopper flow enhancement designs to prevent this sort of blockage. Call our Aftermarket Parts Department for more information on helpful features and accessories like poke holes, vibrators, fluidizers, level sensors, heaters, and even sonic horns. 2. **Search for presence of moisture** Excess moisture in the compressed air stream will cause plugging of the bags and may result in improper cleaning and shortened bag life. This moisture should be combated with compressed air dryers. Additionally, search for any oil leaks, as airborne oil from air compressors can also cause the bags to plug and interrupt the dust collection system. 3. **Check the operation of the timer** When checking the timer, observe the LED lights on the circuit board for timer operation. Check the LED’s visually and listen for pulses. Consult the timer manual for details on setting the timer’s pulse duration and frequency of cleaning. For further information, call Sly at 800-334-2957 or consult the video below: 4\. **Inspect solenoid valves** 4. Defective solenoid valves can result in failure of the pulse valves to operate properly or at all. To replace these defective valves, contact our Aftermarket Department and we will find the appropriate replacement. 5. **Consider condensation** Any condensation of water from high humidity ventilation air entering a cool duct or dust collector can cause the bags to plug. Plugged bags will likely need to be replaced as soon as possible to prevent further problems. Exterior insulation for the dust collector and ducts should be considered. ## Problem: The dust collector is operating at a low volume. **Collectors operating at a low volume will pick up an insufficient amount of dust, costing the plant valuable time and money.  A low air volume may be due to several factors.  Troubleshoot this with the following procedures.** 1. **Clean plugged filter bags** Improper cleaning of filter bags leads to high pressure drop that inevitably leads to a reduced air volume. The filters should be cleaned in an off-line mode, with the fan turned off, for at least 15 minutes.  After this time, start the unit up again. If the pressure drop is still high the filters will need to be replaced. 2. **Evaluate exhaust fan performance** A number of issues could potentially affect the performance of an exhaust fan. Belts may be slipping, rotation of the fan may be incorrect, the inlet or impeller may be in poor condition, or there may be an improper pressure drop due to a poor inlet design for the ductwork. Any specific problems that are found should be corrected and the fan re-tested for flow and pressure drop. 3. **Inspect inlet ducts** If the inlet ducts are plugged, too small, run too long, or cause an excessive pressure drop due to improper connections or fittings, the system air flow will be affected.  Ductwork should be periodically inspected and any specific problems corrected as soon as possible. **NOTE:**     If a fan damper is supplied, the damper should be closed halfway before startup with a new bag.  Once the pressure drop across the bags has reached approximately 2” w.c., the damper may be opened until the unit is at design volume.  This is best determined by taking a pitot tube traverse of the inlet or outlet duct of the collector.  Any air velocity measuring devices may be used. ## Problem: The dust collector is operating at high volume and picking up excessive product. Collectors operating at excessive volume will pick up too much product, potentially over-working the dust collector and removing valued product from the process. Removing more than just the undesired airborne dust can cost the plant valuable time and money. Troubleshoot as follows: 1. **Adjust fan speed** If the fan is running at a speed that is higher than design then it will pull too much air through the system causing the pick-up points to draw in excess product.  Check the fan speed and change sheaves/pulleys if needed to bring the speed to design conditions. 2. **Make sure inlet ducts are secure and properly sized** Inlet ducts that are larger than required and not appropriately customized can lead to lower system static loss, which can lead to higher air flow. Check the ductwork static pressure at several locations and across the fan to verify the system pressure drop is per the design conditions.  Modify the fan or the ductwork to ensure proper pickup volumes and ductwork velocities to prevent powder from settling in the ducting. However, before making any adjustments in the ductwork, check for leaks though flanges, access ports or holes and correct those conditions before taking any measurements. Leaking ductwork will usually mean less available air at the pickup locations and lack of adequate venting of dust in that location. Any non-essential openings should be plugged and any ducting leaks patched to ensure only the appropriate pickup locations are connected to the system. Once this is done, the current operating volumes and static pressures should be measured throughout the system and include the total readings at the exhaust fan. Then compare these measurements to the initial start-up bench marks and design of the ductwork.  Once these values are known, exhaust air at each pick-up point can be controlled with a blast gate. The blast gates serve to fine tune the amount of air volume (CFM) at the specific ventilation point. If you are concerned about picking up too much product, then the blast gate can be adjusted to a more closed-off position, which creates additional static resistance and decreases CFM. Keep in mind, a reduction in air volume also means the duct velocity will decrease. Care should be taken to make sure the velocity does not drop below the recommended velocity required to transport the dust to the dust collector. Low velocities will cause the dust to drop out in the ductwork which can lead to serious ventilation problems and safety issues when the ductwork fills with material. The hood design should also be observed for velocities that are too high, allowing pick up of more dust. Thinking about this process as “dust control” and not “dust collection” may help put it into perspective.  For example, a pick-up point should have a hood or transition which keeps the pick-up velocity low as compared to the high-velocity transport in the ductwork. These values will vary dependent on the application and type of dust involved. 3. **Check filter bags** Any missing or damaged filter bags will create a lower system static loss that can lead to higher conveying air volumes (based on fan curves). The greater problem here is not “excessive product pick-up” at the dust source but heavier dust emissions. Refer to the next section for troubleshooting recommendations. ## Problem: The dust collector is experiencing excessive dust leakage. This problem is similar to excessive product pickup, but is unrelated to collector volume conditions. Instead, troubleshoot dust leakage as follows: 1. ****Double check filter bags**** A clean air plenum, located at the top of the tubesheets. The plenum should be inspected for leaks when troubleshooting a dust collector. If excessive dust leakage is occurring, first check to make sure the filter bags are installed properly. Any improperly installed filters should be reinstalled.  Look for telltale signs of dust on the tubesheet around the faulty filters. ![](https://www.slyinc.com/wp-content/uploads/2024/09/Clean-air-plenum-154x300-1.webp "Clean-air-plenum-154x300-1 | Sly Air Pollution Control") 2. **Inspect clean-air-plenum for leaks** Visually inspect the clean-air-plenum to find the source of the dust leak.  If you cannot determine the source of the leak, fluorescent powders are available which glow under black light. In a dye test, a quantity of the fluorescent powder is introduced into the inlet of the collector with the fan running and the cleaning system off.  Use approximately 1/2 pound of powder per 1,000 square feet of media. Next, the fan should be turned off and the clean-air-plenum inspected with the black light.  The leak point will glow a bright fluorescent color that is more apparent in dim or dark surroundings. A leak test kit is available from Sly Inc. Keeping your dust collection equipment in proper operating condition is essential to maintaining compliance with EPA and OSHA regulations as well as maximizing product recovery.  Troubleshooting is a critical part of the overall system operation.  Paying close attention to small changes in the operation becomes key to keeping your system running smoothly in the way it was intended. For replacement parts, questions, or general inquiries, call Sly Inc. at [(866) 721-3545](https://calltracking.pageonewebsolutions.com/tracking_numbers/TPNC3C4B23C348AEC2EE54EFD301979CD2E97606415210BA470596F456765282FE2/edit_number) or e-mail us at <info@slyinc.com> and we will assist you in troubleshooting your dust collector problems. [Download the Guide](https://www.slyinc.com/resources/white-papers/guide-how-to-design-a-dust-collection-system/) [Dust Collector](https://www.slyinc.com/blog/category/dust-collector/), [Dust Collector Maintenance](https://www.slyinc.com/blog/category/dust-collector-maintenance/), [Dust Collector Repair](https://www.slyinc.com/blog/category/dust-collector-repair/) **Categories:** Dust Collector, Dust Collector Maintenance, Dust Collector Repair --- ### [Tips for Designing an Effective Fly Ash Dust Collection System](https://www.slyinc.com/blog/tips-for-designing-an-effective-fly-ash-dust-collection-system/) **Published:** November 8, 2024 **Author:** p1ws **Content:** [Fly ash](https://www.slyinc.com/industries/fly-ash/), a byproduct of coal combustion poses unique challenges in dust collection. Effective systems are essential to manage particulate loading, fly ash characteristic, higher design temperatures all while meeting emissions standards. Sly specializes in custom-designed solutions that optimize recovery and ensure safety, making us a trusted partner in the industry. ## Understanding Fly Ash Dust Characteristics Dust load is a primary concern, as fly ash can produce high volumes of fine particles depending on the combustion process. Fly ash typically consists of particles smaller than 100 microns, with highly distinctive material and flow characteristics. It is a fine, glass-like powder rich in silicon dioxide and aluminum oxide, making it highly abrasive. It often contains trace amounts of toxic metals, requiring careful handling. The dust can fluidize during transfer, complicating collection efforts. In addition, temperature control is essential when dealing with fly ash, which can be extremely hot post-combustion. Cooling the air before it enters the dust collector helps protect equipment and maintain optimal performance. Effective dust collection design must account for these characteristics to ensure efficient capture and minimize wear on equipment. ## Key Considerations in Dust Collection Design Designing a baghouse to capture fly ash effectively involves several key considerations beyond just dust loading. Each factor plays a vital role in achieving optimal system performance, efficiency, and longevity. Below are some key factors: 1. **Filter Media Selection and Performance:** 2. The characteristics of fly ash, including particle size, abrasiveness, and temperature, influence the choice of filter media. Fly ash’s fine and often abrasive nature requires filter materials that can withstand these conditions without frequent replacement or damage. Proper filter media selection ensures efficient filtration, reducing the risk of premature wear. 3. **System Sizing and Air-to-Cloth Ratio:** The volume of air to be filtered and the density of fly ash impact the air-to-cloth ratio. A system sized to handle the air volume and dust characteristics ensures that the baghouse operates within its ideal air-to-cloth range, optimizing filter life and preventing overload. Correct sizing also reduces pressure drop and minimizes operational disruptions. 4. **Cleaning Mechanism Efficiency:** Baghouses use mechanisms like pulse jets or shakers to clear dust from the filters. Fly ash, with its potential for fine buildup, requires a cleaning system powerful enough to dislodge particles effectively. This avoids filter clogging and maintains efficiency. Designing with fly ash in mind ensures that the cleaning mechanism can keep up with the application’s demands without excessive downtime. 5. **Temperature and Moisture Control:** Fly ash is often produced in high-temperature environments, so the baghouse must be designed to withstand these conditions. Temperature-resistant materials and insulated ducts may be necessary. Moisture control is also critical, as moisture can cause fly ash to clump, increasing the risk of clogging. 6. **Dust Handling and Hopper Design:** The collected fly ash must be managed efficiently to prevent buildup and blockages. Hopper and discharge systems must be sized and configured to accommodate the fly ash volume, avoiding interruptions in airflow and ensuring a steady collection process. Proper hopper design also prevents dust re-entrainment and minimizes potential emissions. 7. **Maintenance Frequency and Costs:** The abrasive nature and fine particle size of fly ash may lead to more frequent maintenance. Designing the baghouse to accommodate these characteristics helps extend component life, reduces filter replacement frequency, and minimizes labor costs. Access to filters and components is essential for straightforward maintenance and longer system life. 8. **Regulatory Compliance:** Fly ash can contain hazardous elements, making emissions control crucial. Designing the baghouse to capture fine particulates and prevent leaks ensures compliance with regulatory standards. This not only prevents fines and penalties but also upholds air quality standards and corporate responsibility. ## Benefits of Custom-Designed Systems Custom-designed dust collection systems offer numerous advantages for managing fly ash. Tailored solutions ensure that all aspects of your specific operation are considered, from dust load to airflow and temperature requirements. Sly offers a range of equipment suited for fly ash applications: - **TubeJet® Pulse Jet Collectors:** These [efficient dust collectors](https://www.slyinc.com/products/dust-collectors/tubejet-baghouse-dust-collectors/tubejet-baghouse-dust-collectors-application-examples/) enable minimal downtime and optimal performance in high-dust environments. - **Cartridge Dust Collectors:** These collectors are ideal for managing dry, free-flowing fly ash dust, offering easy maintenance and energy efficiency. - **Reverse Air Collectors:** These [energy-efficient systems](https://www.slyinc.com/products/dust-collectors/reverse-air-collectors/) use low-pressure air for effective filter bag cleaning and reduced operating costs. By customizing these systems to fit your needs, you can achieve optimal performance, reduce maintenance, and ensure safety and environmental standards compliance. ## Sly’s Expertise in Fly Ash Dust Collection With over 150 years of experience, Sly, LLC excels in designing custom dust collection systems for fly ash. Our expertise ensures efficient, durable solutions tailored to your needs. Contact us today to discuss your requirements and [request a quote](https://www.slyinc.com/contact/request-a-quote/) for a custom-designed system that optimizes performance and safety. **Categories:** Fly Ash, industrial applications, Industrial Dust Collector --- ### [Transforming Dust into Solutions: The Role of Fly Ash and Bottom Ash](https://www.slyinc.com/blog/transforming-dust-into-solutions-the-role-of-fly-ash-and-bottom-ash/) **Published:** December 3, 2024 **Author:** p1ws **Content:** Dust produced from coal combustion isn’t just something to sweep away. Materials like[ fly ash and bottom ash](https://www.slyinc.com/industries/fly-ash/) are emerging as valuable resources in industrial applications. Once considered waste, these byproducts are now paving the way for efficiency and sustainability across various industries. ## Understanding Fly Ash and Bottom Ash Fly ash is the fine, powdery material from burning pulverized coal in power plants at high temperatures. This ash contains silicon dioxide and aluminum oxide, captured by emission control devices before flue gases reach the atmosphere. Bottom ash, conversely, is the coarser, granular, and heavier residue that settles at the bottom of the combustion chamber, where the intense heat causes some particles to melt and fuse. Due to the high combustion temperatures, bottom ash often has a gravel-like consistency. Both types of ash present environmental challenges when disposed of improperly. Landfilling these materials can lead to soil and water contamination. However, by reimagining their potential uses, industries are turning these dust particles into practical solutions. ## The Role of Fly Ash in Industry Fly ash has found a significant place in the construction sector, primarily due to its pozzolanic properties, which make it an excellent substitute or additive for cement in concrete production. When used in concrete, it increases durability, strength, and workability. The spherical shape of fly ash particles improves fluidity, reducing the need for excess water. This makes the concrete easier to work with and contributes to a more robust final product. In addition to concrete, fly ash is used in manufacturing bricks, partially replacing traditional clay. This conserves natural resources and results in bricks with superior strength and reduced permeability. Beyond construction, fly ash plays a role in various innovative applications: - **Agriculture:** As a soil amendment, it improves soil texture and fertility. Its capacity to retain water benefits crops, especially in arid regions. - **Wastewater Treatment:** Its porous structure aids in removing contaminants from water supplies. - **High-Tech Manufacturing:** Extraction of rare earth elements from fly ash supports the production of smartphones, electric vehicles, and renewable energy systems. These diverse uses demonstrate fly ash’s versatility and value across multiple industries. Selecting the correct filter media for industries dealing with fly ash impacts dust collection efficiency and safety. For detailed guidance, learn how to select the correct filter media. ## The Potential of Bottom Ash Bottom ash holds significant untapped potential as a sustainable resource across various industries. Bottom ash resembles the fine aggregates used in construction with its coarse and porous nature. Its angular particles make it suitable for creating lightweight concrete masonry units (CMUs). These blocks are lighter and offer excellent thermal insulation and fire resistance. Bottom ash replaces traditional materials in producing lightweight aggregates, reducing the overall weight of construction elements. This leads to easier handling and potential cost savings. Using bottom ash also increases thermal insulation and fire resistance. Utilizing bottom ash in these applications conserves natural resources and reduces landfill dependency, mitigating environmental impact by transforming what was once discarded into a functional, environmentally friendly material. ## Future Trends and Innovations The potential applications of fly ash and bottom ash continue to expand. Research is underway to develop new materials and technologies that leverage their unique properties. Fly ash’s porous structure shows promise in removing contaminants in wastewater treatment. In agriculture, ongoing studies explore its effectiveness in improving soil health. As industries seek sustainable solutions, the role of these byproducts becomes increasingly important. Innovations in processing and application methods will likely unlock further uses, contributing to a cleaner, sustainable industrial landscape. ## Transforming Waste into Solutions Repurposing fly ash and bottom ash addresses environmental concerns associated with their disposal. By integrating these materials into industrial processes, companies reduce landfill waste and conserve natural resources. In addition, using fly ash in Portland cement instead of disposing of it in landfills or impoundments near coal power plants not only alleviates waste management challenges at these sites but also reduces CO₂ emissions and enhances concrete performance. The production of Portland cement involves heating limestone and other materials to high temperatures, which releases a significant amount of CO₂ due to the calcination process and energy consumption. Every ton of fly ash that replaces Portland cement reduces the CO₂ emissions associated with cement production. This contributes to a lower carbon footprint for concrete production. By incorporating fly ash into cement, the industry can create a more sustainable building material that benefits both the environment and concrete quality. ## Effective Dust Collection Equipment With over a century of experience, companies like SLY,LLC provide custom dust collection solutions that meet specific industrial needs. Our advanced dust collection equipment is suited for handling fly ash and bottom ash. [Contact our dust collection solutions experts ](https://www.slyinc.com/contact/)to discuss your specific needs and request a quote. **Categories:** Fly Ash --- ### [What is a Wet Scrubber?](https://www.slyinc.com/blog/what-is-a-wet-scrubber/) **Published:** March 13, 2019 **Author:** p1ws **Content:** A wet scrubber is a mechanical system that removes pollutants from an air stream by bringing it in contact with a scrubbing liquid, most often water. [Wet scrubbers](https://www.slyinc.com/products/wet-scrubbers/) are generally the only single air pollution control device that can remove both particulates and gases/vapors. They are highly efficient at capturing the smallest dust particles and can eliminate more than 99% of airborne particulate matter by capturing them in liquid droplets. Wet scrubbers that remove gaseous pollutants are also referred to as absorbers. Wet scrubbers are used in a wide range of industries, from acid, fertilizer and asphalt plants to steel mills and power plants. They offer an alternative to baghouses and other [dry dust collection](https://www.slyinc.com/products/dust-collectors/) approaches; they’re often used for controlling exhaust from process equipment or they can be located downstream from baghouses/cartridge filter systems, furnaces, dryers, mixers, bucket elevators, bagging stations, and other emission points. ## How Wet Scrubbers Work The four most commonly used types of wet scrubbers are Impinjet® wet scrubbers, venturi scrubbers, eductor venturi scrubbers and packed towers: - **[Impinjet® wet scrubbers ](https://www.slyinc.com/products/wet-scrubbers/impingement-wet-gas-scrubber/)**collect particulates and clean, cool and absorb vapors and gases. They offer high collection efficiencies (99% for particles 5 microns or larger) with low water consumption and minimum pressure drop. Impinjet scrubbers are highly resistant to fouling and available with capacities as high as 200,000+ CFM. Impingement plate (or tray) scrubbers use a flowing bed of water across a perforated surface. The airflow is drawn into the scrubber and passes through the plate water. The water traps the contaminants, removing them from the airstream. Impingement plate systems typically use lower energy /lower pressure drop to scrub the gas. Impingement scrubbers are suitable for particulate scrubbing and applications where both particulate and gaseous contaminants must be collected. - **[![venturi wet scrubber design](https://www.slyinc.com/wp-content/uploads/2024/08/venturi-wet-scrubber-6.jpg)Venturi scrubbers](https://www.slyinc.com/products/wet-scrubbers/venturi-wet-scrubber/)** with cyclonic separators are often the best choice for high-efficiency collection of fine particulates. They use the differential between high-velocity gases and free-flowing water to create droplets that entrap contaminants, hold them in suspension and deliver them as a suspended solids solution. The venturi scrubber design requires more water and higher pressure drop to remove particulate than impingement plate scrubbers. The converg­ing section of the venturi throat (where the water and airstream merge) creates atomized water droplets to provide efficiencies of 99 percent on particles 1 micron in size and larger. The efficiency can increase to 99.8 percent for particles 5 mi­crons and larger. - **[Eductor venturi scrubbers](https://www.slyinc.com/products/wet-scrubbers/eductor-wet-scrubber/)** remove both soluble gases and particulates by inducing a gas flow using high-pressure liquid focused into a venturi throat. This eliminates the need for a separate exhaust fan or blower to transport the contaminant-laden airstream to the filtration device. Eductor venturi scrubbers can also be used for direct-contact condensation. A high liquid flow rate makes this type of scrubber particularly well-suited for collecting sticky and/or gummy particulate, as well as gases that decompose on contact with water. Eductor scrubbers are often used in combination with other collection devices such as packed tower scrubbers. - **[![packed tower wet scrubber design](https://www.slyinc.com/wp-content/uploads/2024/08/Packed_Tower-239x300-1.png)Packed towers ](https://www.slyinc.com/products/wet-scrubbers/packed-tower-wet-scrubber/)**are designed for chemical scrubbing of gaseous contaminants and are often used to remove sulfur dioxide, hydrogen chloride, ammonia, hydrogen sulfide, and other gases. In vertical scrubbers, the gas flows upward through the bed, while the liquid trickles downward by gravity through the packing, which is typically made up of small plastic or metal objects. The liquid wets the surfaces of the packing materials, which are designed to provide a large amount of surface area for contact between gas and liquid. A liquid distribution header located above the packing evenly distributes the scrubbing solution across the top of the packing. Recirculated scrubbing liquid typically contains alkaline, acid, or oxidizing scrubbing agents to achieve the desired outlet emissions. Prior to leaving the scrubber, the scrubbed air passes through a mesh or chevron style mist eliminator to remove entrained droplets. ## Wet Scrubber Applications ![impinjet wet scrubber design](https://www.slyinc.com/wp-content/uploads/2024/08/impinjet2-1.png)Applications for wet scrubbers typically fall into one or more of four categories: - **Combustible/hazardous dusts** often call for wet scrubbers because they can effectively minimize the risk factors for a dust explosion. However, wet scrubbers are not appropriate for handling all dust types; some dusts (such as alkali metals like lithium, sodium and potassium and alkaline earth metals like beryllium, magnesium and calcium) are actually water reactive, which means they’re more hazardous when they come in contact with water. - **Moisture in the gas stream** will foul or plug a dry dust collector and cause caking on the filter bags, but a wet scrubber can handle it without problems. Given that the scrubber uses water or another scrubbing liquid to saturate the gas stream for particulate removal, moist process gas is no problem. - **High-temperature applications** represent another area where wet scrubbers offer a good solution. Unlike dry collectors, which require special high-temperature design and construction methods and expensive high-temperature filter bags, standard wet scrubbers can handle high process temperatures without these added costs. Because adding water into the system does not affect scrubber operation, quench systems can be employed prior to the inlet to the scrubber. A scrubber design that includes a pre-quench section can handle temperatures higher than 2,000°F. - **The combination of particulate and gaseous contaminants** is particularly problematic for dry collectors because they can only address the solid particulates; a secondary piece of equipment, such as a scrubber, is also needed to remove the gases. In contrast, many types of wet scrubbers can collect both solid and gaseous components from the waste stream with just one piece of equipment. To learn more about how a wet scrubber can boost your dust, vapor, and gas collection efficiency and save you money, download a free copy of Sly’s [Wet Scrubber Application Guide](https://www.slyinc.com/pdfs/WetScrubber.pdf). If you need advice on choosing the right scrubber design type for your process, contact the [Sly sales representative nearest you](https://www.slyinc.com/rep-locator/). [Get the Guide Now](https://www.slyinc.com/resources/white-papers/guide-using-wet-scrubbers-for-combustible-dust-control/) [Wet Scrubber](https://www.slyinc.com/blog/category/wet-scrubber/) **Categories:** Wet Scrubber --- ### [Pocket Guide: Wet Scrubber Basics](https://www.slyinc.com/blog/pocket-guide-wet-scrubber-basics/) **Published:** June 12, 2019 **Author:** p1ws **Content:** Wet scrubbers come in a variety of types and shapes, but all are basically designed to remove gases/vapors and particulates from the exhaust from process equipment like furnaces, dryers, mixers, bagging stations, etc. They’re often the best option for handling combustible particulates because they can eliminate the dust’s explosion potential. They are also well-suited for high temperature applications and those where moisture in the gas stream would quickly clog a dry dust collector. ## Impinjet® Impingement Plate Scrubber ![Impinjet® Impingement Plate Scrubber](https://www.slyinc.com/wp-content/uploads/2024/08/impinjet2.png)[Impinjet® Wet Scrubbers](https://www.slyinc.com/products/wet-scrubbers/impingement-wet-gas-scrubber/) collect particulates and clean, cool and absorb vapors and gases. They offer high collection efficiencies (99% for particles 5 microns or larger) with low water recirculation and minimum pressure drop. Impinjet scrubbers are highly resistant to fouling and available with capacities as high as 200,000+ CFM. Impingement plate (or tray) scrubbers use a flowing bed of water across a perforated surface. The airflow is drawn into the scrubber and passes through the plate water. The water traps the contaminants, removing them from the airstream. Impingement plate systems typically use lower energy/lower pressure drop to scrub the gas. Impingement scrubbers are suitable for particulate scrubbing and applications where both particulate and gaseous contaminants must be collected. ## Venturi Scrubbers ![Venturi wet Scrubber](https://www.slyinc.com/wp-content/uploads/2024/08/venturi-wet-scrubber-4.jpg)[Venturi Scrubbers](https://www.slyinc.com/products/wet-scrubbers/venturi-wet-scrubber/) with cyclonic separators are often the best choice for high-efficiency collection of fine particulates. They use the differential between high-velocity gases and free-flowing water to create droplets that entrap contaminants and deliver them as a suspended solids solution. The venturi scrubber design requires more water and higher pressure drop to remove particulate than impingement plate scrubbers. The converging section of the venturi throat (where the water and airstream merge) creates atomized water droplets to provide efficiencies of 99 percent on particles 1 micron in size and larger. The efficiency can increase to 99.8 percent for particles 5 microns and larger. ## Eductor Scrubbers ![Eductor Venturi Wet Scrubber](https://www.slyinc.com/wp-content/uploads/2024/08/eductor-wet-scrubber.jpg)[Eductor Venturi Scrubbers](https://www.slyinc.com/products/wet-scrubbers/eductor-wet-scrubber/) remove both soluble gases and particulates by inducing a gas flow using high-pressure liquid focused into a venturi throat. This eliminates the need for a separate exhaust fan or blower to transport the contaminant-laden airstream to the scrubber. Eductor venturi scrubbers can also be used for direct-contact condensation. A high liquid flow rate makes this type of scrubber particularly well-suited for collecting sticky and/or gummy particulate, as well as gases that decompose on contact with water. Eductor scrubbers are often used in combination with other collection devices such as packed tower scrubbers. ## Packed Tower Scrubbers ![Packed Tower Wet Scrubber](https://www.slyinc.com/wp-content/uploads/2024/08/Packed_Tower-418x1024-1.jpg)[Packed Towers](https://www.slyinc.com/products/wet-scrubbers/packed-tower-wet-scrubber/) are designed for chemical scrubbing of gaseous contaminants and are often used to remove sulfur dioxide, hydrogen chloride, ammonia, hydrogen sulfide, and other gases. In vertical scrubbers, the gas flows upward through the bed, while the liquid trickles downward by gravity through the packing, which is typically made up of small plastic or metal objects. The liquid wets the surfaces of the packing materials, which are designed to provide a large amount of surface area for contact between gas and liquid. A liquid distribution header located above the packing evenly distributes the scrubbing solution across the top of the packing. Recirculated scrubbing liquid typically contains alkaline, acid, or oxidizing scrubbing agents to achieve the desired outlet emissions. Prior to leaving the scrubber, the scrubbed air passes through a mesh or chevron style mist eliminator to remove entrained droplets. **Want to learn more about how a wet scrubber can help you comply with the strictest environmental regulations without breaking your budget?** [Download Wet Scrubber Buyer’s Guide](https://www.slyinc.com/resources/white-papers/dust-collector-buyers-guide/) [Venturi](https://www.slyinc.com/blog/category/venturi/), [Wet Scrubber](https://www.slyinc.com/blog/category/wet-scrubber/) **Categories:** Venturi, Wet Scrubber --- ### [[Infographic] The Sly Difference in Dust Collection](https://www.slyinc.com/blog/infographic-the-sly-difference-in-dust-collection/) **Published:** July 30, 2019 **Author:** p1ws **Content:** At Sly, what makes us different from other dust collection vendors is what makes us better. We work closely with our customers to design and maintain their dust collection systems. With nearly 150 years of experience, we’re your trusted resource for dust collection solutions. But what does that all mean? **Check out our infographic below or [view the full PDF here](https://www.slyinc.com/wp-content/uploads/2024/09/SlyDifference_Infographic_v4.pdf) to see just what makes Sly different in dust collection.** ![SlyDifference_Infographic_v4](https://info.slyinc.com/hubfs/Blog%20Images/SlyDifference_Infographic_v4.jpg)[Contact Us](https://www.slyinc.com/contact/) [Dust Collector](https://www.slyinc.com/blog/category/dust-collector/) **Categories:** Dust Collector --- ### [How Does a Venturi Scrubber Work?](https://www.slyinc.com/blog/how-does-a-venturi-scrubber-work/) **Published:** February 5, 2020 **Author:** p1ws **Content:** Air quality control is important to the success of every business, especially ones with industrial applications. The best way to maintain a high level of air quality is by using dust collection equipment. ![venturi wet scrubber](https://www.slyinc.com/wp-content/uploads/2024/08/venturi-wet-scrubber-1.jpg)Dust collection equipment improves air quality in your facilities by removing harmful pollutants that can endanger workers, put your regulatory compliance at risk, and damage equipment. Air quality solutions have moved beyond typical dry dust collection, using the inherent properties of the impaction process to create wet scrubbers. Wet scrubbers rely on a scrubbing fluid to remove dust from an air stream. One of the most powerful and widely used type of wet scrubber is the Venturi Scrubber. While venturi devices have been used for over 100 years to measure and record fluid flow, it wasn’t until the late 1940s that engineers learned to use venturi designs to effectively remove particles from air streams. Venturis are able to do so through their hydro-friendly designs. In order to clean air, Venturi Scrubbers use the differential between high velocity dust particles and free-flowing water to create contaminant-entrapping water droplets. Venturi Scrubbers are designed to efficiently remove fumes, dust, solids, and aerosols. The scrubbing liquid, most commonly water, comes into contact with the particulate-laden gas stream in a highly turbulent, high-velocity venturi throat. As the droplets and particulate matter interact, they agglomerate in the diverging section of the Venturi. The entrained droplets, contaminated with particulate matter, are removed from the gas stream by means of a cyclonic separator. The cleaned gas exits the cyclonic separator, while the recovered scrubbing liquid is returned to a separate or integral tank for recirculation. By selecting the appropriate pressure drop, which is proportional to throat velocity, efficiencies of over 99 percent can be achieved over the entire range of particle sizes. Although standardized in size and capacity, each individual unit is custom designed and engineered to meet the specific requirements of each application. While designs may vary from one application to the next, a typical Venturi is made up of three different sections: a converging section, a throat, and a diverging section. Inlet gas streams enter the converging section, increasing in velocity as the area decreases. The scrubbing liquid is introduced above the throat at the entrance to scrubber. Forced to move extremely fast through the small throat section due to increasing velocities, this gas shears the liquid from the walls of the scrubber, creating countless tiny droplets of water. As the gas mixes in with the droplets of water, particulate and other contaminants are removed. With their intricate, yet easy-to-use design, Venturi Scrubbers are used in a variety of applications across the industry. They can remove most any pollutants found in process gas streams, including hazardous and sticky dusts, aerosols, toxic fumes, and mists. By ridding process gas streams of aerosols, dusts, and other particulates, Venturi Scrubbers allow you to reclaim valuable materials. This means significant process savings… and a better bottom line. ## Venturi Scrubber Design: A Better Scrubber Here at Sly, we’ve improved upon the base design of a Venturi Scrubber, creating a device that continually exceeds the expectations of our clients. Simple in design, yet highly efficient, the Sly Venturi Scrubber offers superior engineering. Our team has spent time calculating and optimizing every feature in order to maximize collection efficiency while minimizing operating and maintenance costs. The Sly Venturi Scrubber offers a key advantage: better separation and recovery of liquid mists and ultra-fine particulate than other scrubbers. This, along with adjustable pressure drop provisions and energy regain features, combine in our Venturi design to reduce power consumption and maximize efficiency. Additional features include: - Non-plugging, trouble-free design for scrubbing liquid introduction - Easily adjustable venturi throat - Abrasion-resistant flooded elbow design that minimizes scrubber wear - Cyclonic separator for better mist elimination (no mesh pads or chevrons to clean/replace) - Adjustable spin damper cyclonic separator performance optimization - Low total water consumption through integral sump or separate recirculation system designs With the increased performance of our design, the decision is clear – if you’re looking for a wet scrubbing solution, Sly is the place to go. [Get the Guide](https://www.slyinc.com/resources/white-papers/guide-using-wet-scrubbers-for-combustible-dust-control/) [Venturi](https://www.slyinc.com/blog/category/venturi/), [Wet Scrubber](https://www.slyinc.com/blog/category/wet-scrubber/) **Categories:** Venturi, Wet Scrubber --- ### [How to Select the Correct Filter Media](https://www.slyinc.com/blog/how-to-select-the-correct-filter-media/) **Published:** October 26, 2020 **Author:** p1ws **Content:** Dust collectors are the go-to choice for industrial air quality control. By increasing the safety of your site, protecting the health of your workers, and helping you to maintain regulatory compliance, dust collectors are vital to the success of your business. However, even the best baghouse can’t do it alone – it needs the right filter media. Choosing the correct filter media for your baghouse is essential to making sure that your dust collection system is operating at peak efficiency and properly removing pollutants from your airstreams. Without the right media, your baghouse could become clogged more quickly or even fail, compromising the quality of your air and putting your operations at risk. Here at Sly, we know that this simply can’t happen. ## Selecting the Correct Filter Cloth Types When it comes to selecting a [filter media](https://www.slyinc.com/products/fabric-filter-media-options/), there are a few main types of filter cloth types to choose from. These include: - Natural fibers - Woven felts - Non-woven felts - Synthetics Finding out which bag filter cloth material is best for your baghouse will largely depend on your application. That’s because the performance of your filter bag is directly related to its ability to withstand and operate in the environment that it’s being used in. The biggest considerations are operating temperatures and the characteristics of your dust. ## Consider Baghouse Temperature For temperature, you need to know the continuous operating temperature of your airstream at the inlet of your baghouse. What’s the average temperature? Are there any temperature surges? What’s the frequency and duration of those surges and how hot does it get? The answers to these questions will determine what fibers can be used for the filter media. If you have an ambient operating temperature around 120°F with no surges, then most industrial-grade natural and synthetic fibers would work. However, if you have an operating temperature above 400°F with frequent 500°F surges, then you’ll need a specialty fiber that can handle these higher temperatures without breaking down or compromising baghouse performance, like Teflon or P84 (Polyimide). With regard to dust, all of the following can affect a filter’s performance: - Dust particle size - Dust chemistry/makeup - How abrasive the dust is - Wet vs. dry particulate - Dust combustibility That last point is especially important with the September 7, 2020 DFPA 652 deadline quickly approaching to complete your Dust Hazard Analysis. Beyond lowering your baghouse’s efficiency and performance, not having a filter that can handle explosive or combustible dust can be devastating, both from a safety and regulatory standpoint. If you’re dealing with combustible dust, you’ll need a filter that can mitigate the risk of an explosion. Period. ## Types of Filter Media  For the other dust considerations, the following table shows the main types of filter media that Sly offers, along with their key features and best-suited operating parameters: | **Type** | **Common Finishes** | **Operating Temp.** | **Key Features** | |---|---|---|---| | Cotton | flame retardant | 180°F | resistant to flex and flat abrasion, excellent clean-down | | Polyester | singed, glazed, oleophobic | 275°F | great resistance to chemicals, abrasion, dry heat degradation | | Polypropylene | singed, glazed, SlyTech-01 | 170°F | high strength, excellent resistance to most acids and alkalis | | Nylon | singed, glazed | 250°F | good resistance to alkalis, holds up well to organic solvents | | Acrylic | singed, glazed, SlyTech-01 | 275°F | good acid, heat, and hydrolysis resistance | | Aramid\* | singed, glazed, SlyTech-01 | 375°F | good resistance to alkalis, holds up well to organic solvents | | Fiberglass\* | acid resistant, ePTFE membrane | 450°F | excellent resistance to most acids | | P84**®** | PTFE membrane, singed, glazed, SlyTech-01 | 500°F | non-flammable, resistant to flex abrasion | | PPS\* | PTFE membrane, singed, glazed, oleophobic | 375°F | excellent resistance to both acids and alkali, great in applications where emissions standards are tight | | Teflon**®** | PTFE membrane, glazed | 500°F | great chemical resistance and abrasion resistance | \*considered high-temperature media, best suited for applications with high-heat operating conditions Always one to innovate, Sly also offers Sly High Efficiency Felts (SlyHe). With both regular and high-temperature (Aramid) designs, these innovative felts have several advantages over both commodity felts and PTFE membrane laminates, including lower emissions, higher efficiencies, and an extended bag life. ## How Sly Can Help Beyond providing high-quality fabrics and filter media for your dust collector, Sly also offers a number of [baghouse analysis services](https://www.slyinc.com/services/) to make sure that you maintain a highly-optimized system. Our particle analysis service allows us to better understand the characteristics of your dust by measuring bulk density and particle size distribution. Then, with our filter bag failure analysis, we can analyze any filters that have failed in the past and combine that with your system’s operating data in order to recommend the best bag type for your specific application. With the combination of Sly’s superior products and expert knowledge, we’ll help you to get the most out of your air pollution control system, no matter what industry you’re in. [Download the Guide!](https://www.slyinc.com/resources/white-papers/guide-how-to-design-a-dust-collection-system/) [Dust Collector](https://www.slyinc.com/blog/category/dust-collector/) **Categories:** Dust Collector --- ### [What Particles Does a Wet Scrubber Remove?](https://www.slyinc.com/blog/what-particles-does-a-wet-scrubber-remove/) **Published:** January 27, 2021 **Author:** p1ws **Content:** If you have a problem with industrial air quality, you need a dust collector. Finding the right one will depend on your air quality requirements and the particles you’re dealing with. While standard baghouses and dry dust collectors are great for a variety of applications, [wet scrubbers](https://www.slyinc.com/products/wet-scrubbers/) – also known as wet dust collectors – [are recommended](/three-common-reasons-to-use-a-wet-scrubber) when dealing with certain hard-to-manage pollutants, especially when you have a mix of particles and gases/vapors. Wet scrubbers are most effective at removing: ![wetscrubberSLY](https://www.slyinc.com/wp-content/uploads/2024/08/wetscrubberSLY.jpg) - Soluble particles - Fine particles and mists - Wet or sticky particulate - Mixes of particulate, vapors, and gases - Combustible dust ## How Does a Wet Scrubber Work?  While dry dust collectors rely on filter bags and cartridges, wet scrubbers use a scrubbing liquid to remove harmful contaminants from the air. Through the impingement process, wet scrubbers can remove both solid particulate and gases/vapors from an airstream, all in a single system. You can modify a wet scrubber’s efficiency and performance by manipulating the size of your scrubbing fluid’s water droplets. The smaller the droplet, the higher your collection efficiency will be. When designed correctly, wet scrubbers can achieve collection efficiencies of over 99%. In fact, S[ly’s Venturi/Impinjet® ](https://www.slyinc.com/products/wet-scrubbers/impingement-wet-gas-scrubber/)combination scrubber can remove pollutants from stack emissions with a 99.999% efficiency rating. ## When Should I Use a Wet Scrubber?  Wet scrubbers are suitable for a wide range of applications and industries, including food production, plastics, processing and machining, and healthcare devices/pharmaceuticals. No matter the industry, a wet scrubber may be right for your application if you have any of the following: ### Soluble Particles  If your particles are easily dissolvable in water, then the scrubbing fluid of a wet scrubber may be the perfect means of particle removal. The scrubbing fluid will trap the dissolved particles for easy removal, creating a solution for recycling or disposal. ### Fine Particles and Mists  The finer the particles, the more efficient a wet scrubber will be compared to a dry dust collector. Sly’s Venturi scrubbers are designed to collect smaller particles and mists using ultra-fine droplets to entrap contaminants and hold them in the solution. ### Wet or Sticky Particulate  If your particulate is especially wet or sticky, it can easily clog a standard filter bag or cartridge. However, since you’re using a scrubbing fluid, wet or sticky particulate is no hassle for a wet scrubber. ### Mixes of Particulate, Vapors and Gases  When dealing with a mix of particulate, vapors, and gases, wet scrubbers are an efficient way to deal with multiple states of contaminants in a single dust collection system. We often recommend an Impinjet® wet scrubber when you need to collect particles 5 microns or larger with a variety of particulates, vapors, and gases. ### Combustible Dust  Depending on your application, dust explosions can be a major safety issue. The following are the necessary precursors to a dust explosion: - Combustible fuel/dust - Fuel/dust dispersion - Potential ignition points (heat, friction, etc.) - Free oxygen - Confined spaces That’s why, if you have combustible dust, you need a dust collection system to mitigate the risk of an explosion. While there are many ways to help explosion-proof a baghouse, wet scrubbers effectively eliminate many of the precursors necessary to start an explosion. ## The Sly Approach to Specifying a Wet Scrubber  Here at Sly, we’ve been helping the leaders of industry improve their air quality control for nearly 150 years. That experience has taught us how to specify the best dust collector for the task at hand. The perfect dust collector isn’t a standard “off the shelf” model, but rather one customized to your unique needs. That’s why we work directly with you to understand your application, and specific dust management needs before specifying a wet scrubber. **Here are some of the questions that we ask to learn more about your application:** - Do you have a particulate issue, a gas-phase issue, or both? - How much dust is there? How much is coming to the scrubber? - What’s the particle size distribution or average minimum particle size? - What are the physical characteristics of the particles? Are they dry or sticky? Do they float or sink in water? - Do you want to recover and recycle any captured dust? Once we know more about your process, we can build off our past experience to design a wet scrubber system that’s tailored to your specific needs. Venturi scrubbers are the go-to scrubber for a variety of higher-end scrubbing needs. Venturis can handle even the most demanding wet scrubbing applications, and with high collection efficiencies. That said, Venturis are essentially the sledgehammers of wet scrubbers. They require more of a pressure drop to operate than other scrubbers, leading to higher energy costs for the consumer. If you don’t have a lot of fine or sticky/stringy particulate, then one of Sly’s Impinjet® wet scrubbers is often the better option due to their lower energy costs. They may not have the power of a Venturi, but you don’t always need a sledgehammer to get the job done. If you have a dryer application, then the Impinjet® is likely the way to go. Weighing your options and then finding the perfect solution is Sly’s specialty. Nobody knows dust collectors like us. We’ll make sure that you get the right tool for the job, that way you can maximize scrubber performance, efficiency, and product life for the best dust collection system possible. [Contact Us](https://www.slyinc.com/contact/) [Wet Scrubber](https://www.slyinc.com/blog/category/wet-scrubber/) **Categories:** Wet Scrubber --- ### [How to Handle Conveyor Dust for Better Bulk Material Handling](https://www.slyinc.com/blog/how-to-handle-conveyor-dust-for-better-bulk-material-handling/) **Published:** February 4, 2021 **Author:** p1ws **Content:** If you’re moving product – especially fine or[ powdered](https://www.slyinc.com/products/loading-spouts/)[ ](https://www.slyinc.com/products/loading-spouts/)[bulk materials](https://www.slyinc.com/products/loading-spouts/) – chances are you’re creating a dust issue within your plant. From belt and screw conveyors to bucket elevators and scale hoppers, moving materials almost always generates some level of dust and fine particulate. This dust can lead to a number of issues, including: ![conveyordustSLY](https://www.slyinc.com/wp-content/uploads/2024/08/conveyordustSLY-scaled.jpg) - Product and environmental contamination - Increased maintenance needs and faster equipment wear - Regulatory penalties - Increased dust explosion risk In addition to the above, conveyor dust can be a major danger to worker safety, as inhaled dust can irritate bronchial airways and exacerbate existing respiratory conditions. If this dust makes it to nearby residential areas and businesses, complaints can endanger your future operating permits. That’s why managing conveyor dust, known in the industry as fugitive dust, is a top priority for bulk material handling operations. Here at Sly, with nearly 150 years of experience managing dust in industrial applications, our experts know how to safely keep your products, and your business, moving forward. ## What is Fugitive Dust?  Fugitive dust, or nuisance dust, is the dust that is generated while moving materials. This differentiates fugitive dust from process dust, which is created from grinding, screening or drying materials. While most any activity that disturbs bulk material is going to generate fugitive dust, crushed, fine and powdered materials are the biggest culprits. Examples of materials known for generating fugitive dust include: - Grains and flours - Cannabis - Mined aggregate and minerals - Salt and spices Industrial conveyors are a major source of fugitive dust since they often move large amounts of material at high speeds. Unless properly designed with a perfect seal and installed correctly, drop chutes, impact points and conveyor enclosures are all places where fugitive dust can become a problem. ## How Do I Properly Handle Fugitive Dust?  When dealing with fugitive dust, one idea may be to try and simply clean up any dust that escapes from your conveyors and transfer points. However, not only does this approach fail to address the root of the problem, but it is also time-consuming, costly and potentially dangerous. Placing the burden all on your cleaning crew will quickly drive up your operational costs through the increased maintenance and operator time required to dispose of fugitive dust. Not only that, but this places your staff near moving conveyors and other dangerous process equipment, increasing the risk of an injury. Trying to clean away the problem can also cause clouds of pollutants to form as you agitate the dust and send it into the air. If this dust is combustible, it will create clouds of explosive dust that put you at further risk for a dust explosion. Instead of going the cleaning route, you’ll want to handle your fugitive dust issue directly, preventing it from ever even spreading throughout your facility. This can be done with quality dust collection equipment. By installing a dust collector directly at the source, you can collect fugitive dust and dispose of it before it ever becomes a problem. Depending on the application and desired product purity, you may also be able to recycle the dust back into your system, minimizing product loss. ### Baghouses and Cartridge Collectors   If you are looking to handle fugitive dust reliably and efficiently, baghouses and cartridge collectors are tried and true means of dry dust control. Used in a variety of applications, [Sly’s](https://www.slyinc.com/products/dust-collectors/pulse-jet-collectors/)[ TubeJet®](https://www.slyinc.com/products/dust-collectors/pulse-jet-collectors/) baghouse dust collectors offer on-line cleaning with a steady pressure drop and “no tools required” bag changes. Sly’s square series pulse jet collectors and cylindrical collectors offer a full range of baghouse designs and media choices to solve even the toughest conveying applications. When dealing with dry and free flowing fugitive dust, Sly’s PleatJet™ cartridge dust collectors are an ideal choice for controlling dust emissions. Sly offers two types of cartridge filters: the PleatJet™ vertical cartridge collector and the PleatJet II™ horizontal cartridge collector. For more remote transfer applications, a bin vent installed on the transfer point may be right for you. These smaller collectors don’t have a hopper and can help minimize collector space requirements and operational costs when collection needs aren’t as high. ### Wet Scrubbers  By using a scrubbing liquid instead of a filter bag or cartridge, [wet scrubbers](/what-is-a-wet-scrubber) can remove a variety of contaminants through the impingement process. Wet scrubbers offer the perfect dust management solution for many bulk material handling applications, especially those with: - Light dust loadings - Wet or sticky particulate - Humid air or combustible dust The efficiency of your wet scrubber is directly controlled by the size of your water droplets. Sly’s Venturi/Impinjet® combination scrubber can remove pollutants from stack emissions with a 99.9% efficiency rating. ## The Sly Solution to Better Conveyor Dust Management  When it comes to handling industrial dust, Sly offers a mix of high-quality dust collection equipment and operational expertise to help give you the cleanest systems possible. We don’t just give you a standard dust collector – we analyze your systems and your unique needs to specify the perfect air quality control equipment for the job at hand. For instance, you might need a collector with stainless steel construction to avoid contamination from the collector when recycling material. Since fugitive dust particles are generally larger than process dust particles, we can also help you design a collector with air-to-cloth ratios that are efficient and cost effective. [Download Dry Dust Collection Handbook](https://www.slyinc.com/resources/white-papers/dry-dust-collection-handbook/) [Dust Collector](https://www.slyinc.com/blog/category/dust-collector/) **Categories:** Dust Collector --- ### [Finding the Best Wet Scrubber for Your Application](https://www.slyinc.com/blog/finding-the-best-wet-scrubber-for-your-application/) **Published:** April 21, 2021 **Author:** p1ws **Content:** Wet scrubbers are becoming increasingly popular in the industrial air quality control market. This is due to their ability to handle the industry’s more difficult pollutants, as well as combine particle and gas/vapor removal in a single system. When used correctly in the right applications, wet scrubbers can achieve impressively high collection efficiencies of over 99 percent. The secret behind wet scrubbers is their unique method of dust collection. Instead of the filter bags or cartridges found in dry dust collectors, wet scrubbers use a scrubbing fluid to remove various pollutants from your airstream. The efficiency and performance of your wet scrubber are in part determined by the size of its scrubbing fluid’s water droplets, with smaller droplets equaling higher collection efficiencies. However, not all applications are the same. To truly optimize the performance of your wet scrubber and improve your air quality, it’s best to pick the right scrubber for your application. ## **When Should I Use a Wet Scrubber?**  While there is some overlap between dry dust collectors and wet scrubbers in terms of application, certain dust management needs and air quality control requirements are best met by using a wet scrubber. A wet scrubber is often a great choice when you have any of the following: - Wet or sticky particulate - Soluble particles - Fine particles and mists - Humid air and moisture in your gas stream - Mixes of particulate and gases/vapors - Combustible dust That last point is very important, as the National Fire Protection Association (NFPA) is placing an increasingly heavy importance on dust explosion prevention. While baghouses and dry dust collectors can be fitted with extra measures such as flameless venting and external grounding to mitigate the chance of an explosion, wet scrubbers are inherently resistant to explosions due to their use of a scrubbing fluid. For a closer look into explosion-proofing requirements, NFPA 652 and NFPA 484 cover the most recent regulatory standards.  ![Sly wet scrubber](https://www.slyinc.com/wp-content/uploads/2024/08/Sly-wet-scrubber-7-scaled.jpg) ## How Do I Pick the Right Wet Scrubber?  Many different types of [wet scrubbers](https://www.slyinc.com/products/wet-scrubbers/) exist today. Choosing the right one will depend on the characteristics of your dust/pollutants and the specific needs of your application. Here are the main types of wet scrubbers and which applications they fit best with: ### Venturi Scrubbers  Venturi scrubbers are great for small particulate removal down to the submicron range. They use the differential momentum between the free-flowing scrubbing fluid and high velocity gases to create contaminant-entrapping droplets which can suspend and contain a variety of toxic and harmful pollutants. With the right design, you can achieve high collection efficiencies of over 99% for particles with a diameter 1 µm and larger. *When to use a venturi scrubber*: ultra-fine particulates, submicron particles, fumes and liquid aerosols ### Impingement Scrubbers  Impingement wet scrubbers are your go-to scrubber for removing most particles larger than 5 µm, as well as soluble gases. Also referred to as tray-tower scrubbers, impingement wet scrubbers use horizontal perforated trays to enhance the gas-liquid contact in the scrubbing process. Gas enters from the bottom of the tower, traveling upward through the holes in the trays while the scrubbing fluid flows over each tray, mixing with the gas. Impingement scrubbers can achieve efficient dust collection with low water recirculation and minimal pressure drop. Sly’s Impinjet® wet scrubber improves upon the designs of standard impingement scrubbers by using impingement baffles above each hole in the tray design. These wetted baffles create tiny droplets around 100 microns in diameter to scrub the gas and entrap particles in the scrubbing liquid. The improved design of the Impinjet offers high collection efficiencies of 99% or more for particles 5 microns or larger and capacities as high as 200,000+ CFM. *When to use an impingement scrubber*: particles 5 microns or larger, mixes of particulate and gases/vapors, heat recovery and applications with high hydraulic loadings ### **Eductor Scrubbers**  Eductor scrubbers are generally used for air flows less than 2000 CFM, removing soluble gases and particulate by inducing a flow of gas using high pressure liquid. They can be used for direct-contact condensation and offer a high liquid flow rate, great for more stubborn pollutants. *When to use an eductor scrubber*: sticky/gummy particulate, as well as gases that decompose with water, such as SiCl4 and H2SiF6 ### Packed Tower Scrubbers   Also known as packed column or packed bed scrubbers, packed tower scrubbers are designed for the chemical scrubbing of gaseous contaminants. The scrubber’s internal packing provides a large, wetted surface area for the contaminated gas to come into contact with the scrubbing fluid, thus getting absorbed or reacting with the scrubbing fluid. Recirculation of the scrubbing liquid can help achieve desired outlet emissions. *When to use a packed tower scrubber*: gas–phase emissions like sulfur dioxide and other odors/acids ### Sizing Scrubbers  In addition to selecting the right type of scrubber, you will also want to appropriately size your wet scrubber for your application. Factors that affect the size of the scrubber include gas flow rate, temperature, pressure, gas composition, humidity, contaminant loading and your desired outlet conditions. It is important to note that whether or not your gas stream is fully saturated as it enters the scrubber, it *will* exit the system fully saturated, resulting in a change in volume, temperature and density. The overall scrubber size (diameter) is then a function of the velocity of saturated gas through the scrubber shell. Using the moisture content of your gas stream (typically expressed as pounds of water per pound of dry gas) and your inlet temperature, you can calculate the saturation temperature and saturated volume content can be calculated. ## Better Wet Scrubbers at Sly  Here at Sly, with nearly 150 years of experience in air quality control, we have the right equipment and expertise to get you the perfect wet scrubber for your application. All of our base scrubber models can be further customized to meet your specific dust collection requirements, leading to optimal scrubber performance and collection efficiencies. For instance, Sly’s Venturi/Impinjet combination scrubber can be tailored to your system’s needs to achieve collection efficiencies of over 99.99%. For more information on wet scrubbers and when to use them, check out Sly’s [Wet Scrubber Application Guide](https://www.slyinc.com/pdfs/WetScrubber.pdf). [Contact](https://www.slyinc.com/contact/) [Wet Scrubber](https://www.slyinc.com/blog/category/wet-scrubber/) **Categories:** Wet Scrubber --- ### [How Does a Packed Bed Scrubber Work?](https://www.slyinc.com/blog/how-does-a-packed-bed-scrubber-work/) **Published:** April 1, 2020 **Author:** p1ws **Content:** A common type of wet scrubber that industrial companies use is the packed tower scrubber. Packed tower scrubbers, also known as packed bed scrubbers or packed column scrubbers, are a type of wet scrubber specifically designed for the chemical scrubbing of gaseous contaminants from airstreams. These scrubbers, when designed correctly, can successfully absorb and neutralize harmful and toxic gas streams, exhausting clean air into the atmosphere. ![Packed Tower 9 full-300x175](https://www.slyinc.com/wp-content/uploads/2024/08/Packed-Tower-9-full-300x175-1.jpg) ## **Packed Tower Scrubbers** What makes packed tower scrubbers different than other wet scrubbers is the internal packing housed within the scrubbing vessel. This packing provides a large wetted surface where contaminated airflows come into contact with the device’s scrubbing liquid. Depending on the scrubbing liquid used and the gas contaminants involved, the liquid will absorb or react with contaminants in the airstream, efficiently removing them from your air. Alkaline, acidic, or oxidizing scrubbing agents are often used in the recirculated scrubbing liquid in order to achieve the desired outlet emissions. For vertical, countercurrent scrubber operations, contaminated gas will flow upward through the bed of the vessel while the scrubbing liquid irrigates downward through the bed by means of gravity. At the top of the scrubber, a liquid distribution header evenly distributes the scrubbing solution to get a uniform distribution of liquid across the top of the packing. As the air moves up through the packing, the extended contact time between the air and the liquid allows the scrubber to absorb or react with the contaminants. Before the scrubbed air leaves the vessel, it passes through a mesh or chevron mist eliminator in order to remove any entrained droplets of liquid, ensuring that the outlet airflow is of the highest quality. The components of your specific airstream and desired removal efficiency will be used to determine the features of the scrubber, including its bed depth, packing size, irrigation rate, and what chemicals are used. ## **Sly’s Custom-Engineered Solutions** Nobody knows packed tower scrubbers better than Sly. Rather than just giving you a generic scrubber, we know that your unique application calls for an equally specific solution, so we custom design our equipment for your needs. Once we know the specific requirements of your application, we can design a packed bed scrubber that will best handle your project. Sly’s custom-fabricated packed bed scrubbers are engineered to optimize tower diameter, packing depth, recirculation flow rate and mist eliminator style. If you’re looking for a packed tower scrubber OEM that will work with you to make sure that you’re getting the best equipment possible, look no further than the team here at Sly. [Download Wet Scrubber Buyer’s Guide](https://www.slyinc.com/resources/white-papers/wet-scrubber-buyers-guide/) [Wet Scrubber](https://www.slyinc.com/blog/category/wet-scrubber/) **Categories:** Wet Scrubber --- ### [Why Do My Filter Bags Keep Failing?](https://www.slyinc.com/blog/why-do-my-filter-bags-keep-failing/) **Published:** June 2, 2021 **Author:** p1ws **Content:** If you have a baghouse, your filter bag can make or break the performance and efficiency of your dust collection system. When [filter bags](https://www.slyinc.com/products/fabric-filter-media-options/) fail, it can cause avoidable downtime and force you to get costly bag replacements – all of which can significantly impact your bottom line. That is why you want to mitigate filter bag failure as much as possible. Filter bag replacements are typically the biggest operating expenses for a baghouse system, so you can get the biggest return on your investment if you can extend the life of your filter bag. But it’s not just about cost-minimizing filter bag failure will lead to: - Safer facilities - Easier regulatory compliance - Streamlined maintenance - Enhanced system efficiency/performance![filterbags](https://www.slyinc.com/wp-content/uploads/2024/08/filterbags.jpg) ## What are the Causes of Filter Bag Failure? Filter bag failure can occur for various reasons. Fortunately, many of these reasons are well documented, and you can take steps to prevent them. Here are the main causes of filter bag failure, as well as how to combat them: ### Uncontrolled Moisture Typical baghouses and filter bags are not designed for wet environments. If you have uncontrolled moisture, it can cause your filter media to plug up and your filter bags to fail prematurely. Moisture will also cause dust to accumulate on other parts of the collector as well, including the inner walls, ductwork, pressure sensors, and the vanes of the hopper’s rotary airlock valve, which can cause the airlock to seize. It only takes a small amount of moisture to lead to a big problem. Common causes of moisture within your baghouse include: - Condensation - Changes in humidity/temperature - Hygroscopic dusts (salts, sugar, metal oxides, etc.) - Moisture entering the collector through leaks or bad seals - Wet or fouled compressed air supply #### Fix: Use a Dryer or Separator Since wet/oily air is often the problem, you can use a dryer to remove moisture from the air if it’s wet, or use a separator to remove oily particulate. Choosing different filter media can also help, as filters made from common synthetic materials more easily break down when exposed to acidic or basic solutions caused by moisture combining with contaminants in the collector. ### Overcleaning While it’s required that you clean your filter bags, too much cleaning can cause your bags to fail early. When you pulse the bags more often than they need to be pulsed, it can lead to small tears in the bag that progressively become a bigger and bigger problem. This can also happen if you pulse the filter bags at too high a pressure, like going up to 110 psi when it should only be 80 psi. Manual cleaning is often not generally recommended as it can easily lead to these tears and quickly break down the filter bag. If your filter bag is too plugged up for pulsing to work, it’s best to just change out the bags. #### Fix: Fine-Tune Your Cleaning System A healthy dry dust collection system should have a steady pressure drop. If it does not, you need to decrease (or potentially increase) the frequency of your cleaning. Work with an air quality control expert to fine-tune your cleaning system by adjusting your pulse control timer to get your desired pressure drop. Another option is to add clean-on-demand instrumentation so that it only cleans when the pressure drop gets to a certain point, which your specific system and application would define. ### Abrasive Dust Just like how improper cleaning methods can cause tears in your filter bags, so can abrasive dust. While certain dusts will be more naturally abrasive, the design of the collector itself can also cause increased friction between the dust and the filter bag. Poor inlet design, too high of an air-to-cloth ratio, and too high of an interstitial velocity will all lead to more abrasive dust-to-bag contact. #### Fix: Use Abrasion-Resistant Designs In addition to designing your collector to reduce the upward velocity between the filter bag and your dust, you can use an AR (abrasion-resistant) plate for the inlet of your collector. ### Poor Filter Bag Fit For maximum filter bag life, you want a good filter bag to cage fit. You need the right amount of flex – too rigid and the bag won’t be flexible enough, while too much flex will lead to an excessive amount of momentum when the material hits the cage. Having too few vertical wires in the cage can also have a similar effect. Poor filter bag fit can also cause your cleaning process to underperform and not clean your filter bags well, which adds to the problem of overcleaning your bags as you try to make up for the loss by cleaning more regularly. #### Fix: Better Fits and More Wires To ensure a proper fit, make sure that a dust collection expert is at the helm of designing your bag/collection system and that you fit the bag appropriately during installation. Having a cage with more wires can also lead to better support, making for easier cleaning and less wear on the filter bag. ## Preventing Filter Bag Failure: It all Starts with the Design Prevention is always the best form of maintenance. The best way to prolong filter bag life is to design the collector correctly from the get-go. Here at Sly, we always make sure to design your dust collector system with filter bag life in mind. Our experts will ask questions upfront about your application and all of the different potential modes of filter bag failure. If there’s ever any uncertainty, we can conduct a filter bag analysis to determine exactly what the problem is and how to prevent it. Once we get your custom dust collector installed, we can help find the right maintenance and upkeep protocols to ensure optimal bag life. By monitoring things like pressure drops, we can catch any minor issues before they become a bigger problem. Contact us today to learn more about how Sly can help optimize your dust collection system for years to come with our total dust management approach to air quality control. [Contact Us](https://www.slyinc.com/contact/) [Air Filter](https://www.slyinc.com/blog/category/air-filter/), [Bag Filter Cleaning](https://www.slyinc.com/blog/category/bag-filter-cleaning/), [Dust Filters](https://www.slyinc.com/blog/category/dust-filters/), [fabric filters](https://www.slyinc.com/blog/category/fabric-filters/), [Filter cleaning](https://www.slyinc.com/blog/category/filter-cleaning/) **Categories:** Air Filter, Bag Filter Cleaning, Dust Filters, fabric filters, Filter cleaning --- ### [From Design to Optimization: Everything You Need to Know About Wet Scrubbers](https://www.slyinc.com/blog/from-design-to-optimization-everything-you-need-to-know-about-wet-scrubbers/) **Published:** July 6, 2021 **Author:** p1ws **Content:** Wet scrubbers help plant managers across various industries improve the air quality in their facilities. You can find wet scrubbers at work in many industrial facilities, as well as: - Food production plants - Plastics manufacturing facilities - Processing and machining shops - Pharmaceutical and healthcare facilities And more! When used correctly, wet scrubbers can help you improve the safety of your workers, ensure better regulatory compliance, and mitigate costly downtime. ## Do I Need a Wet Scrubber?  If you are deciding between a wet scrubber or a dry dust collector, it’s best to look at your dust collection requirements. Specifically, you will want to analyze the conditions of your facility and what type of dust and other pollutants you are handling. A wet scrubber is often a good choice if you have any of the following: [![SLY_WetScrubber_Guide](https://www.slyinc.com/wp-content/uploads/2024/08/SLY_WetScrubber_Guide.jpg)](https://info.slyinc.com/wet-scrubber-guide) - Fine particulate and mists - Wet, sticky, or gummy particulate - Soluble particles - Humid air - Combustible dust ## How Do I Pick the Right Wet Scrubber?  Wet scrubbers are typically divided into one of three categories based on their energy usage. - You have low-energy - medium-energy - high-energy wet scrubbers Wet scrubbers that use more energy will have higher operating costs, so working with a dust collection partner like Sly is best to ensure you get the perfect fit for your facility. Once you know your desired energy requirements, picking the right wet scrubber starts with choosing the best base model. The four main types of wet scrubbers are: - Venturi Scrubbers - Impingement Plate Scrubbers - Eductor Scrubbers - Packed Tower Scrubbers The type of scrubber you need is only the jumping-off point – Sly will help you size and customize your wet scrubber for optimal air quality control. Then, it’s only a matter of installation and regular maintenance work on your system to ensure everything continues to run smoothly. Want to know all of the ins and outs of wet scrubbers and how to use them? Get Sly’s newest industry resource, *The Complete Guide to Getting Started with Wet Scrubbers*, for everything you need to know about selecting the right wet scrubber for your application. [Download the Guide Today!](https://www.slyinc.com/resources/white-papers/the-complete-guide-to-getting-started-with-wet-scrubbers/) [Wet Scrubber](https://www.slyinc.com/blog/category/wet-scrubber/) **Categories:** Wet Scrubber --- ### [Solving the Dust Issue: Enhanced Solutions for Mining and Mineral Processing](https://www.slyinc.com/blog/solving-the-dust-issue-enhanced-solutions-for-mining-and-mineral-processing/) **Published:** December 10, 2024 **Author:** p1ws **Content:** Dust capture in mining and [mineral processing](https://www.slyinc.com/industries/mining-minerals/) comes with unique challenges and requirements due to the specific characteristics of the dust and the environments in which it’s generated. Mining and mineral processing generate substantial dust. This dust isn’t just a nuisance; it’s a serious hazard. Whether from excavation, crushing, or transporting materials, airborne particles can cause respiratory issues for workers and damage equipment. Regulatory bodies like MSHA and EPA have strict limits on dust emissions to protect health and the environment. Dust generation varies depending on the type of mining—surface, underground, or open-pit—and the materials involved. For example, coal mining produces dust that is different from lithium extraction. Each scenario presents unique challenges that require specialized solutions to manage effectively. ## Tailored Dust Collection Solutions for Mining Operations In mining and mineral processing, one-size-fits-all solutions rarely work. Dust capture in this industry comes with unique challenges and requirements due to the specific characteristics of the dust and the environments in which it’s generated. Here are some key factors that make it distinct: 1. **High Dust Loads and Particle Size Variability:** Mining operations produce substantial quantities of dust, with particles ranging from fine respirable dust to larger particles. Systems need to capture a wide range of particle sizes effectively. 2. **Highly Abrasive Dust:** Dust from mining and mineral processing is often abrasive due to the hardness of materials like silica, rock, and mineral ores. Dust collectors, particularly filters and ductwork, need to be highly durable and resistant to abrasion. 3. **Moisture Content:** Mining operations frequently encounter dust with varying moisture levels, especially in wet processes or when materials are damp from environmental exposure. This can lead to material buildup, clogging, and reduced filter efficiency. 4. **Explosive Dust:** Some mined materials produce dust that can be combustible or even explosive, such as coal dust. This requires dust capture systems designed with explosion-proofing, proper venting, and robust safety controls. 5. **High Temperatures:** Certain processes, like smelting or crushing in metal ore processing, can generate high-temperature dust. Dust capture equipment in these areas must withstand and manage high heat to prevent filter damage or hazards. 6. **Remote or Harsh Environments:** Mining sites are often in remote or harsh locations, requiring dust capture systems to be robust, reliable, and low-maintenance due to limited access for frequent servicing. 7. **Environmental and Regulatory Compliance:** Mining operations are subject to stringent environmental regulations on air quality and particulate emissions, demanding highly efficient dust capture systems to ensure compliance. 8. **Large Equipment and Spatial Constraints:** Mining processes often involve large machinery and facilities with significant space constraints, requiring custom dust capture systems to fit around other equipment without obstructing operations. By tailoring dust collection solutions to each application’s specific needs, Sly ensures optimal performance and compliance with stringent air quality standards in the mining industry. Sly excels in customizing dust collection systems to meet these specific requirements. ## Sly Dust Collection Systems Sly offers a comprehensive portfolio of dust collection systems tailored for mining and mineral processing operations, including: 1. **Baghouse Collectors:** Sly’s TubeJet Pulse Jet Collectors are excellent for high-volume applications. Baghouse filters capture fine particulates by drawing air through fabric filter bags. The bags are cleaned using short, controlled bursts of compressed air to dislodge dust from the filter bags, which then fall into a hopper below for disposal. Depending on the dust type, this baghouse type effectively collects smaller particles and can be customized with different filter media. 2. **Cartridge Collectors:** Cartridge Dust Collectors are another versatile option. This type of collector utilizes pleated cartridges with high filtration areas, capturing dust in tighter spaces. They are ideal for smaller operations or specific applications within larger facilities. 3. **Reverse Air Collectors:** Sly’s Reverse Air Collectors are typically used in applications where low energy consumption and gentle bag cleaning are priorities. Unlike pulse jet baghouses, which use high-pressure bursts of compressed air, reverse air baghouses use a gentler, low-pressure reverse air flow to clean the bags. This reverses overall energy consumption. 4. **Cyclone Collectors:** Sly’s Cyclones use centrifugal force to separate dust particles from the airstream. They are often used as pre-filters to reduce dust load on other collection systems, especially for larger particulates. Cyclones are relatively low maintenance but are less effective for fine particulate collection. 5. **Wet Scrubbers:** Sly’s Wet scrubbers use water or another liquid to trap dust particles and can also remove gaseous pollutants from the airstream. They are highly effective for dust with high moisture content or combustible properties. However, wet scrubbers require a reliable water supply and produce wastewater that requires proper disposal or treatment. Incorporating Sly’s advanced dust collection systems into mining operations ensures not only a healthier and safer work environment but also promotes compliance, efficiency, and sustainability. With robust construction and versatile applications, these systems provide long-term reliability and energy savings while supporting regulatory standards and operational goals. Sly’s solutions help mining operations achieve cleaner air and smoother operations, enhancing overall productivity and workforce well-being. ## Partnering with Sly for Customized Solutions Partnering with an experienced provider is crucial for dust collection solutions for mining and mineral processing. With over 150 years of expertise, Sly offers customized systems that meet your operation’s unique challenges. Our expert engineers work closely with you to develop tailored solutions that maximize efficiency and meet regulatory standards. Whether you’re looking to upgrade or install new systems, Sly provides the reliability and support you need for long-term success. Request a quote today and discover how Sly can help you achieve cleaner air, improved efficiency, and regulatory compliance. **Categories:** industrial applications, Industrial Dust Collector --- ### [What are the Key Factors to Consider When Getting a Wet Scrubber?](https://www.slyinc.com/blog/what-are-the-key-factors-to-consider-when-getting-a-wet-scrubber/) **Published:** July 27, 2021 **Author:** p1ws **Content:** Designing a dust collection system is all about matching a dust collector to your specific dust management needs. Just like with baghouses and dry dust collectors, choosing the right wet scrubber will come down to picking a scrubber that is uniquely designed for your application, dust, and air quality requirements. That is why, to make certain that you get the right scrubber, you need to learn more about your operation. Taking the time to analyze your unique application and dust collection requirements will ensure that you get the most out of your wet scrubber, enabling: - Safer workspaces - A more productive workforce - Easier regulatory compliance - Enhanced throughput and less downtime ## Is a Wet Scrubber Right for Me?**[![Wet scrubber](https://www.slyinc.com/wp-content/uploads/2024/08/Wetscrubber.jpg)](https://info.slyinc.com/wet-scrubber-guide)** Wet scrubbers, also known as wet dust collectors, are perfect for a variety of industrial applications. When used correctly, wet scrubbers can achieve extremely high collection efficiencies of over 99 percent. However, to capitalize on those high collection efficiencies, you need to ensure that your application is right for a wet scrubbing system. A wet scrubber is often a good choice if you have any of the following: - Wet or sticky particulate - Mixes of solid particle and gases/vapors - Humid air or moisture in your gas stream - Light dust loadings with soluble particles - Fine particles and mists - Combustible dust If you don’t have any of the above, a wet scrubber may still work, but it may not be the most efficient solution for your application. In that case, consider looking into a baghouse or dry dust collector. Baghouses are great for handling both light and heavy dust loadings in an efficient manner, making them versatile dust collectors for various industrial applications. The experts at Sly can work with you to help determine if a wet scrubber or a baghouse is better for your unique application. ## How Do I Make Sure I Get the Right Scrubber? Once you know that a wet scrubber is right for you, it’s time to dig deeper into the specifics of your application. Here are some of the questions that you should ask to help determine your dust collection requirements: ## What Type of Dust/Pollutants Do I Have, and What Is My Dust Loading? You will want to determine various characteristics of your dust, such as if it is sticky or hygroscopic, or if it is soluble in water. ## What Is My Dust Loading? Heavier dust loadings will require a higher energy scrubber, so it is best to determine your dust loading in order to maximize efficiency. ## What Are The Particles of My Dust Like, and How Big Are They? Apart from the overall qualities of your dust, you will also want to look at the particles themselves. This is where you will want to note characteristics such as thin fibers, ragged edges, and abrasive particulate. Micron size is also factor, as is your particle size distribution. To help with the selection process of your wet scrubber, Sly’s particle analysis service can help you to better understand the individual characteristics of your dust. ## How Efficient Does My Dust Collection System Need To Be? Some applications face stricter efficiency and air quality control requirements from regulatory agencies like OSHA. ## Do I Have Any Dust Recovery Needs? Product recovery can be an important part of dust collection systems for certain operations. Having a wet scrubbing system that is designed to better facilitate recovery can lead to substantial cost savings. ## How Do I Want to Dispose of Any Collected Dust/Pollutants? Facility managers often go for systems that generate a smaller filter cake, wanting to minimize the material that they need to dispose of. Having a cake or slurry that is easily contained and manageable will help to make operations easier reduce the change of fugitive emissions. ## Are There Any Space or Noise Limitations for the Scrubbing System? The last thing you want to do is build an advanced wet scrubber, just to have it not fit at the on-site location. Installing the scrubber on a platform can help where space is limited. If the scrubber is going to be nearby workers, it will often need to meet low-noise standards. ## Is Water Costly In My Area? The cost of water can vary from one location to another. If water is costly in your area, you may want to choose a wet scrubber that minimizes water use. ## Which Wet Scrubber is Best for My Application? After you have a thorough understanding of your application and dust management needs, it should be easy to work with a dust collection expert like Sly to determine which type of wet scrubber is right for your facility. Here are the main types of wet scrubbers and when to use them: ### Impingement Scrubbers Impingement scrubbers are used to collect various particulate, as well as clean, cool and absorb vapors and gases from industrial airstreams. They offer high collection efficiencies (99% @5 microns) and low water consumption. Impingement scrubbers are best used on particles 5 microns or larger, mixes of particulate and gases/vapors, and applications with high hydraulic loadings. ### Venturi Scrubbers Venturi scrubbers efficiently collect fine particulate and mists. In addition to collecting ultra-fine and submicron particles, they can also be used for fumes and liquid aerosols. ### Eductor Scrubbers Eductor scrubbers can remove soluble gases and particulate from industrial air supplies by inducing a gas flow using high-pressure liquid focused into a venturi throat. They are best used on sticky or gummy particulate and gases that decompose with water. ### Packed Tower Scrubbers Also called packed bed or packed column scrubbers, packed tower scrubbers are designed to chemically scrub contaminants from an airstream. They are typically used to remove gas-phase emissions like sulfur dioxide and other odors/acids. ## Better Wet Scrubbers at Sly With our nearly 150 years of dust collection expertise, Sly can help you find the perfect wet scrubber for your unique application. Once we find you the best scrubber for the job, we will work with you to size and customize your wet scrubber to maximize the performance and efficiency of your scrubbing system. Learn more in our new handbook, *[The Complete Guide to Getting Started with Wet Scrubbers](https://info.slyinc.com/wet-scrubber-guide)*. Contact us to learn how we can help you [Contact](https://www.slyinc.com/contact/) [Wet Scrubber](https://www.slyinc.com/blog/category/wet-scrubber/) **Categories:** Wet Scrubber --- ### [6 Signs of an Unsafe Dust Collection System](https://www.slyinc.com/blog/6-signs-of-an-unsafe-dust-collection-system/) **Published:** December 7, 2021 **Author:** p1ws **Content:** Where combustible dust is a concern, there is only one sure sign that your safety protocols are working: zero safety incidents. But even a perfect past safety record is no guarantee that you will never have an incident in the future. Keeping your facility and your workers safe requires constant monitoring of the environment for unsafe conditions. Even a small detail could make the difference. While we cannot cover everything in this article, we will examine six areas that should be on your list of unsafe dust collection conditions. ## What are the Signs of an Unsafe Dust Collection System? ### Poor Housekeeping A dust leak is one of the most telltale signs of an unsafe dust collector environment. Failure to maintain a clean, dust-free environment is a big red flag that your dust collection system is not operating safely. A dust leak from any equipment—and not just from the dust collection equipment itself—is a hazard. Dust leaks can spring from mixers, ductwork, grinders, screw conveyors, or almost any kind of machinery or manufacturing equipment. And any dust that collects because of those leaks is a fire hazard, susceptible to not only sparks but also from disruptions or vibrations that could send the dust airborne. Whatever the catalyst, this flying dust can create a flash fire or an explosion. Although poor housekeeping is the most common issue, it is also the most noticeable and can be easily addressed.![sly-oct-newsletter-block-02](https://www.slyinc.com/wp-content/uploads/2024/08/sly-oct-newsletter-block-02-2.png) ### Lack of Bonding and Grounding For any kind of material that is sensitive to sparks, including combustible dust, bonding and grounding are critical. Static buildup from equipment or machinery can create sparks that can ignite a dust cloud inside a piece of equipment or inside ductwork, for example. Bonding simply means taking two pieces of equipment and tying them together with a wire so that they are at the same potential. In other words, if a piece of equipment has a slight positive charge, that positive charge is carried over to bleed off any charges. Grounding means physically putting a stake in the ground and wiring the equipment to this grounding stake so that any charge or static electricity has a place to escape to prevent a spark that could potentially ignite dust. If equipment sits on an insulated pad, for example, the equipment must not only be bonded together, it must also be grounded. Bonding and grounding go hand-in-hand. Since gasket material and paint are insulators and there is not always metal-to-metal contact between equipment, bonding ties things together, and then grounding directs any charges into the ground. A lack of proper bonding and grounding is an important sign of an unsafe dust collection condition. If you have dust that is sensitive to static buildup and/or spark or ignition under low spark energy, you must have bonding and grounding. ### Noisy Equipment Although this may seem obvious, any equipment that is making a squeaking noise, because it is not properly lubricated or needs new bearings, is another sign of an unsafe condition. This could be a fan or a piece of takeaway equipment, for example, or anything that could create a heat source, including the friction caused by metal rubbing against metal. This creates an unsafe condition because heat and/or metal sparks can ignite combustible dust. For this reason, certain pieces of equipment are often made of nonmetal materials, stainless steel or aluminum, to minimize heat or sparks caused by friction. Always be aware of any unusual machinery noises. ### Internal Ledges It is important to make sure that dust is being properly discharged on a constant basis and does not build up on the inside of equipment or ductwork. This can occur if there are internal ledges inside the dust collector equipment. If you have a dust collector that has internal ledges, or places where dust can build up, can create an unsafe condition. For example, if an access door has a flat bottom, the dust can build up on the door ledge. And wherever there is a buildup of dust there is the potential, in some cases, for self-ignition. Coal dust, for example, is notorious for self-ignition. A pile of coal dust can set itself on fire solely from the friction between the particles as it settles due to gravity. This alone can cause enough heat and friction to ignite fine coal dust particles. If that smoldering fire or a single spark is uncovered and put it into a piece of equipment, it can gain oxygen, ignite and cause an explosion or fire. Internal ledges where dust can collect and potentially ignite should be eliminated as an important unsafe condition that should be part of your inspections. Be sure the duct velocities are monitored and maintained above the duct carrying velocity. ### Low Airflow A little-known factor contributing to unsafe conditions is a lack of airflow. If a fan is not pulling enough air volume, creating enough operating pressure, and conveying velocity to keep dust in the airstream, gravity can cause dust to settle in the ductwork. This creates piles of dust inside the ductwork, and that dust is prone to ignition. ### Inadequate Suppression System Another unsafe issue from the standpoint of combustible dust is the lack of explosion protection equipment. Without properly designed explosion vents, suppression systems, or other means to mitigate an internal explosion—along with isolation valves to keep the explosion from moving from one piece of equipment to another—you have a situation that must be addressed. Dust collectors have a long life, and many systems were installed before the emphasis on combustible dust systems recommended today. If an inspection of your dust collector system reveals a lack of, or inadequate, fire and explosion suppression or venting, this is an unsafe condition. ## Summary These are just a few signs of an unsafe dust collector system. There are many more, and it is impossible to explore this topic in a single article fully. Sly recommends that you not try to address these unsafe conditions alone. Always seek professional expertise. Sly, LLC has been helping companies safely collect dust for over 100 years. We can help you evaluate your dust collector system and customize a solution to resolve any unsafe conditions in your operation. [Contact Us](https://www.slyinc.com/contact/) [Dust Collection System](https://www.slyinc.com/blog/category/dust-collection-system/), [Dust Collector Inspection](https://www.slyinc.com/blog/category/dust-collector-inspection/), [Dust Collector Maintenance](https://www.slyinc.com/blog/category/dust-collector-maintenance/) **Categories:** Dust Collection System, Dust Collector Inspection, Dust Collector Maintenance --- ### [How to Determine Wet Scrubber Costs for Your Next System Design](https://www.slyinc.com/blog/how-to-determine-wet-scrubber-costs-for-your-next-system-design/) **Published:** October 17, 2017 **Author:** p1ws **Content:** ![Sly Wet Scrubber.jpg](https://www.slyinc.com/wp-content/uploads/2024/08/Sly-Wet-Scrubber-9.jpg) Budgeting for a wet scrubber system can seem like an overwhelming task when you install one only every few years. When building a budget for the project, not only do facilities engineers and operations staff have to consider the many equipment options available, but they also have to keep in mind their in-house engineering, installation and ongoing maintenance capabilities. There are some simple guidelines to follow that can help make it easier to establish the initial budget for the project. ## Start With Other Examples When calculating how much a wet scrubber solution will cost, you can start with the obvious question of initial installation cost by looking at similar systems in place. Ask your vendor questions such as: Where can I find an installation of a similar size, with similar particulates, in a similar or same industry as my application? What worked about those installations, and what did not? If the customer had to do it over again, how would they have specified their system differently? If possible, find out what [solutions were used to solve similar problems](https://www.slyinc.com/resources/case-studies/). Most manufacturers will have customer case histories they can share with you or references you can call yourself with questions you would like to ask. ## It Is a Balancing Act Sourcing a wet scrubber often means a back-and-forth discussion between you and the supplier. This is to be expected as there are so many variables to consider when going through various options, including venturi, packed-bed, or eductor venturi wet scrubbers. Each of these has their own considerations, such as throat diameters, bed-packing materials and high-pressure liquid choices, respectively. When it comes to NFPA, EPA or OSHA regulations, these must always be considered along with the price. Wet scrubber systems come with many components and sub-systems. Often, customers consider their regulatory requirements and budgets only for one or two of them, say the scrubber itself and maybe some ductwork.  That would be a critical mistake, however, as regulatory compliance affects many other elements in your system. In fact, your scrubber isn’t a single solution but an integrated system.  As a result, ensure that your budget is a complete one, and all the core and ancillary costs you should account for: - Air quality monitors - Pump and fan control boxes - pH probes - Monitoring equipment including pressure gauges, airspeed sensors, humidity detectors, and temperature monitors - Water flow, pressure, and quality sensors - Storage tanks, recirculating tanks, and recirculating pumps - Input and exhaust fans - Water supply piping, and recirculating piping - Mist eliminators - Input and exhaust ductwork - Loading spouts - Paints, finishes, and coatings - High-pressure liquid choice - Access doors  Sometimes customers are surprised to consider this comprehensive list of items on their budget. It just means there’s more to consider when building your budget than the scrubber unit itself as the only cost. So, an itemized breakdown of the cost can help you understand what you are budgeting for. It can also assist in determining what to pay a vendor for and what to develop in-house. ## Consider More Than Initial Purchase Dollars As mentioned, there are many variables to consider when budgeting for your new wet scrubber installation. Although it may not appear on your budget as a particular “hard-cost” line item alongside ductwork, fans or other components, don’t forget to consider your internal time and any outsourced vendor support needed. If you are unaccustomed to wet scrubber system installations, you may do better by budgeting for a “plug-and-play” system designed and installed by your vendor. A turnkey system approach avoids the cost of in-house engineering and can often eliminate unexpected elements to the project that weren’t envisioned at the start. Larger companies with on-staff facilities engineering teams or enterprises that are familiar with wet scrubber systems may find savings if they source the scrubber and then handle system design for other components, like tanks and instruments, themselves. Manufacturers can also include complementary—but required—items not listed in their price that you should purchase elsewhere. These can include aspects such as field welding or assembly, foundations, motor starters, testing setups, access ladders and more. In additional to the initial purchase price, remember to keep in mind ongoing maintenance expenses. Whatever type of system you’re selecting, from whatever manufacturer, every system requires ongoing maintenance, energy consumption, cleaning/inspections and parts, so Total Cost of Ownership over the life of the unit is important to consider in your budget. ## Building a Total Budget Budgeting is a thorough, nuanced process that requires some flexibility, attention to detail and advanced planning. Considering all the variables involved—associated components, the cost tradeoffs of turnkey vs. in-house-designed systems, and the difference between initial purchase price and total cost of ownership—will help you create a complete and accurate understanding of the true costs of a wet scrubber system. [Contact Us](https://www.slyinc.com/contact/) [Wet Scrubber](https://www.slyinc.com/blog/category/wet-scrubber/) **Categories:** Wet Scrubber --- ### [The Role of Dust Collectors in Cement Production](https://www.slyinc.com/blog/the-role-of-dust-collectors-in-cement-production/) **Published:** July 20, 2016 **Author:** p1ws **Content:** The production of Portland cement makes up approximately 90% of the total cement produced in the U.S. The main raw materials categories used to make Portland cement are lime, silica, alumina, and iron, but the process also consists of byproducts from other industries such as power plant fly ash, steel mill scale, and metal smelting slag. ## Step One – Raw Mill In the first stage of cement production, the raw materials are blended to meet the desired chemical composition and then ground to the optimum size for pyroprocessing. After milling, the material is moved to storage silos or slurry tanks until pyroprocessing. In this stage, a pulse jet dust collector and cartridge is needed for the milling process as well as material handling, conveying, and storage processes ## Step Two – Coal Grinding Most cement plants today use coal as fuel for the pyroprocessing stage. The coal is ground to the required fineness based on the volatiles in the coal to ensure the most efficient combustion is achieved. There are multiple stages of the coal processing area, including coal handling, initial crushing, conveying, final grinding, and storage. All of these areas benefit from the presence of air pollution control equipment, especially explosion-proof equipment. ## Step Three – Pyroprocessing/Kiln The blended and ground raw materials (known as “Raw meal”) are not fed to the pyroprocessing system (a rotary kiln) where they are subject to extreme temperatures up to 2,700° F. This high temperature causes chemical reactions that convert the raw meal to clinker. Clinker nodules range in size from 1/8” to 2”. A pulse jet air dust collector is appropriate for this stage of the process. ## Step Four – Clinker Cooler The clinker cooler cools the clinker exiting the kiln from 2,000° F down to 250° F. This is required to achieve the desired chemical qualities of the product and enables the use of conventional conveying equipment to handle the product in the following stages of production. A portion of the heat is recovered during the cooling process and the resulting balance of air is vented to the atmosphere and must be filtered to an acceptable emissions level. A pulse jet dust collector is helpful to have during this stage of the process. ## Step Five – Finishing Mill In the finish mill department, the cooled clinker is ground to a fine powder using ball or tube mills. Additives called grinding aids are also introduced during this stage to help facilitate the milling process and to import specific properties to the cement. Note that the type of grinding aid utilized can significantly impact the performance of fabric filters used in a dust collector. As with other stages, a pulse jet dust collector can assist in managing emissions. ## Step Six – Material Handling; Conveying; Load Out These steps are not so much processes as they are various emissions points requiring dust collection. Sly offers extensive expertise in material handling, storage silos, conveying, and load out. For information about air pollution control equipment designed to manage emissions during production processes, call Sly at 800-721-3545 and one of our experienced representatives will tailor a custom solution designed for your business. [Contact Us](https://www.slyinc.com/contact/) [Cement Dust](https://www.slyinc.com/blog/category/cement-dust/), [Dust Collector](https://www.slyinc.com/blog/category/dust-collector/) **Categories:** Cement Dust, Dust Collector --- ### [What to Look for When Evaluating a Wet Scrubber Quote](https://www.slyinc.com/blog/what-to-look-for-when-evaluating-a-wet-scrubber-quote/) **Published:** August 8, 2017 **Author:** p1ws **Content:** ![Wet Scrubber Quote](https://www.slyinc.com/wp-content/uploads/2024/08/wet-scrubber-quote-300x225-1.jpg "| Sly Air Pollution Control") When evaluating quotes from wet scrubber manufacturers, it is best to watch out for a few important details and approaches. Not every quote is prepared with the same level of detail, so it becomes tough for an engineer or plant manager to lay them alongside each other and see an apples-to-apples comparison. Here are a few questions a fully prepared quote should answer, along with some other types of information you should look for in the quote. ## Upfront Statements of Design Conditions As you begin to compare one quote to another, make sure the quotes include all the key specifications they should with clear and detailed descriptions of a scrubber’s design, installation and performance aspects. These include inlet gas flow rate, temperature, pressure and humidity, along with particulate size, required energy efficiency, regulatory compliance needs and the scrubber’s location. Consider any coating or paint options as well that might be needed to withstand environmental conditions. Furthermore, if you are purchasing a particular kind of scrubber, such as a [venturi](https://www.slyinc.com/products/wet-scrubbers/venturi-wet-scrubber/), [impingement](https://www.slyinc.com/products/wet-scrubbers/impingement-wet-gas-scrubber/), or [packed-bed scrubber](https://www.slyinc.com/products/wet-scrubbers/packed-tower-wet-scrubber/), make sure to ask about adjustable throats, differential pressure, or packing materials used. Having all relevant specs readily available not only makes it easier to compare one wet scrubber to another, but it also allows customers to spot gimmicks or shortcuts that some manufacturers may take. Some wet scrubber manufacturers make claims of performance or price that cannot stand up to the fundamental laws of physics according to the [principles of venturi scrubber design](https://www.slyinc.com/pdfs/Venturi_Scrubbers_Physics_And_The_Big_Bang_Theory.pdf). These gimmicks can include claims of ways to shorten inlets, throats or expanders on venturi scrubbers while retaining a certain pressure drop, or unrealistically downsizing a wet scrubber, or using a thinner gauge material in an attempt to reduce weight and cost. However, while such modifications may make a scrubber lighter or cheaper, they are guaranteed to short-change performance, no matter what the maker may claim. So be on the lookout for shortcuts that attempt to circumvent known best-practices. ## Access to People Behind the Spec Sheet When evaluating a quote, you’re evaluating the company behind the quote, as well as the scrubber itself. A good supplier of wet scrubbers goes beyond merely shipping you a product to install. They should also offer a knowledge base that customers can rely upon to answer questions in the field. This can come in the form of salespeople, engineers and managers who know how to troubleshoot and answer questions, along with [whitepapers, videos, and other media offerings](https://www.slyinc.com/resources/). These can be especially useful to ensure compliance with NFPA, EPA, or OSHA regulations. Also, it should be easy to reach engineers and technical experts at your wet scrubber supplier during the quoting process, as you are sure to have questions. If they are hard to reach before the purchase, or if you have to go through a few layers of corporate bureaucracy before you can contact an applications engineer on the phone, it is hard to imagine that they will be easy to find for the support you’ll need after the sale goes through. Say, for example, that a customer has little prior experience in managing particulates, but they’ve determined, either through their own research or recommendation from a colleague, that they need a wet scrubber to handle dust. When they call for a wet scrubber quote, and all they can tell the supplier is “I have a dust problem,” the supplier should begin to provide the customer access to tutorials, in-house experts and objective advice to help guide their selection. Consider questions such as: is the provider pushing a wet scrubber solution because that is what you have asked for or because that is all they have?  Instead, will they help you specify a dry dust collection system if that is what the situation warrants? Will they counsel you on some of your pressure or air flow calculations, if they think they are not likely to prove successful in the field? Can they show you installation and maintenance videos that give you an idea of how the unit will perform during and after installation? Do you need certain customizations to fit in a particularly tight space? Your wet scrubber supplier should be proactive in sharing with you a wealth of tutorial information during the quotation process to answer these and many other questions you might have. ## Long Time, Repeat Customers Some companies have [customers that have used their wet scrubbers for years or even decades](https://www.slyinc.com/resources/case-studies/). Be on the lookout for these suppliers, because those are the systems you want! It is often helpful to ask for customer referrals so you can learn why they have stayed with the same vendor for so long. These customers can offer valuable insights and tips on why you should go with a quote from the company they chose. Furthermore, frequent instances of repeat business indicate that the wet scrubber supplier has reliable, consistent processes that deliver what their customers need. These can include timely quote turnarounds, fast access to parts, easy procedures for troubleshooting, as well as access to knowledgeable people you’ll want as partners. If your potential wet scrubber vendor is slow or reluctant to provide those references, then that speaks volumes about the quality of their equipment and after-sales support. ## The Quote Is More Than Just a Price Check The process of building and evaluating a wet scrubber quote is best when it is a collaborative and organic back-and-forth process between the supplier and customer. This helps both parties select a solution—and a company—that is best suited to any application. Look for vendors who have clear and detailed design, installation, and performance specifications, have extensive tutorials and easy access to experts, and those who can point to a strong list of satisfied customers. [Download the Wet Scrubber Buyer’s Guide](https://www.slyinc.com/resources/white-papers/wet-scrubber-buyers-guide/) [Wet Scrubber](https://www.slyinc.com/blog/category/wet-scrubber/) **Categories:** Wet Scrubber --- ### [Venturi Scrubbers, Physics & The Big Bang Theory](https://www.slyinc.com/blog/venturi-scrubbers-physics-the-big-bang-theory/) **Published:** December 15, 2016 **Author:** p1ws **Content:** Did you know Sly has a full, in-house engineering team of design experts? It’s true! Not only is our team amazing, they’re absolutely necessary. We make dust collection look easy, but there are numerous design considerations that go into creating our equipment. When our engineers are at work, they use physics to make the best possible, high-functioning collectors. Take our venturi wet scrubbers, for example. Everything from the inlet to the expander is designed taking physics into consideration. Just a few centimeters off, and the venturi can’t produce the results we guarantee. To learn more about using physics to design and test venturi wet scrubbers, please click the image below to view our latest white paper, “Venturi Scrubbers, Physics & The Big Bang Theory,” written by Sly’s own scrubber expert, Dwayne Sanders. [![](https://www.slyinc.com/wp-content/uploads/2024/08/Venturi_Scrubbers_Physics_And_The_Big_Bang_Theory-232x300-1.jpg "| Sly Air Pollution Control")](https://www.slyinc.com/pdfs/Venturi_Scrubbers_Physics_And_The_Big_Bang_Theory.pdf) [This article was originally published in the December 2016 issue of Processing Magazine](http://www.processingmagazine.com/venturi-scrubbers-big-bang-theory/). Thank you to the staff at Processing for allowing us to repost it here. [Contact Us](https://www.slyinc.com/contact/) [Venturi](https://www.slyinc.com/blog/category/venturi/) **Categories:** Venturi --- ### [How to Ensure NFPA and OSHA Compliance in Your Dust Collection System](https://www.slyinc.com/blog/how-to-ensure-nfpa-and-osha-compliance-in-your-dust-collection-system/) **Published:** August 5, 2016 **Author:** p1ws **Content:** As anyone who operates a facility can tell you, complying with safety rules and requirements is not just a moral obligation, it’s hugely important to company success. Organizations like The National Fire Prevention Association (NFPA) and the government-run Occupational Health and Safety Association (OSHA) issue rules and guidelines for manufacturing equipment to ensure maximum workplace safety. In some cases, your dust collection system will need to be inspected and upgraded to ensure compliance with these guidelines. In baghouses and dust collectors, there are a number of ways Sly can help you meet requirements and keep your workplace safe, healthy, and happy. **If you believe you may need a new dust collector, consult the following guidelines and opportunities for new equipment:** ## **OSHA MANDATED CLEANUP** In compliance with OSHA rules, manufacturing processes that generate escaping dust will need to install some sort of dust collection equipment complete with hoods, dueling, fans, and auxiliary equipment. Lucky for these manufacturers, Sly Inc. is standing by to point them in the right direction. Though compliance rests with the end user, our talented specialists can customize equipment that best suits your facility. [![Limestone_case_study](https://www.slyinc.com/wp-content/uploads/2024/08/Limestone_case_study-300x199-1.jpg "| Sly Air Pollution Control")](https://cdn2.hubspot.net/hubfs/2026920/Imported_Blog_Media/Limestone_case_study-e1469212923458.jpg) ## **REPLACEMENT OF EXISTING OUTDOOR BAGHOUSES** To comply with NFPA-68 requirements, many baghouses will need to have explosion relief venting added if it is not already present on the collector. If the unit is older, the most economical course of action is almost always to replace the existing unit with one up to safety standards. ## **BAGHOUSE ISOLATION DEVICES** Even if a baghouse has installed the aforeme ntioned pressure relief or suppression equipment, isolation devices are also required to keep a deflagration confined to that baghouse location. For dueling up to 8” in diameter, a fast-acting butterfly or slide gate type damper can be used. For larger dueling systems, chemical suppression devices may be used. Either way, isolation should be installed upstream of baghouses (where flammable or explosive dusts are present) and downstream (unless the baghouse vents directly to the outdoors). ## **RELOCATION/REPLACEMENT OF EXISTING INDOOR BAGHOUSES** Baghouses located indoors will always need to be fitted with explosion relief or suppression equipment. However, in some cases, the rework costs may be heavy. If this is so, it’s best to either move the unit outdoors or replace it entirely. Consult a specialist at Sly Inc. for more information on the best option in this scenario. **If you believe your current collector does not need replacing, but may need a few compliance upgrades, consult the following guidelines:** ## **ISOLATION MEANS TO CONTAIN A DEFLAGRATION** OSHA and NFPA both require that any deflagrations be isolated from the primary source to any connected equipment. This will create a requirement for fast-acting butterfly dampers, slide gate dampers, or flame suppression equipment. [![Picture1](https://www.slyinc.com/wp-content/uploads/2024/08/Picture1-252x300.jpg "| Sly Air Pollution Control")](https://www.slyinc.com/wp-content/uploads/2024/08/Picture1.jpg) The amount and nature of this equipment will depend on duct size and location of the device with respect to the ignition source. ## **IN PLANT REVIEW/ANALYSIS OF PROTECTION REQUIREMENTS** Oftentimes, plants with current compliance equipment or a need for said equipment may not have the experienced personnel required to determine and ensure accordance with established rules. In this case, Sly can provide personnel with the ability to provide “in-plant” reviews of process equipment, existing dust collection, ductwork, and other equipment. These qualified engineers will review the equipment and then make recommendations for modifications or additions to bring the plant into full compliance. ## **TESTING SERVICES FOR MATERIAL ANALYSIS** NFPA recommends all potential flammable or explosive materials be tested to determine their explosive characteristics. Sly can recommend reliable testing services for flammable or explosive materials to customers who inquire. For more information on compliance laws or inspecting and upgrading your dust collection system, give Sly a call at 866-721-3545 and one of our knowledgeable representatives will help determine the best course of action for your facility. [Contact Us](https://www.slyinc.com/contact/) [Dust Collection System](https://www.slyinc.com/blog/category/dust-collection-system/), [Dust Collector](https://www.slyinc.com/blog/category/dust-collector/), [OSHA Compliance](https://www.slyinc.com/blog/category/osha-compliance/) **Categories:** Dust Collection System, Dust Collector, OSHA Compliance --- ### [Sly Inc.’s Top 5 Most Viewed Videos of All Time](https://www.slyinc.com/blog/sly-inc-s-top-5-most-viewed-videos-of-all-time/) **Published:** July 13, 2016 **Author:** p1ws **Content:** Sly Inc. has a [YouTube channel](https://www.youtube.com/channel/UC7nSpDlAJCC0JYK_2DYIfwA) not only designed to showcase our products and company, but to provide tutorials and explanations on how to operate some of our basic offerings. Over the years, we have accumulated over 20,000  views. Here are our top five videos of all time from our YouTube channel. ## 1) Change a Diaphragm Valve Repair Kit by Sly Inc. In this short video, Dave Mosinski explains the proper techniques and procedures to for changing an air pulse diaphragm valve. Any pulse jet dust collector has diaphragm valves which can either be single or double style. This is Sly’s most-viewed video of all time and provides a simple, clear explanation for a frequently asked question in air pollution control. ## 2) How to Measure a Top Load Filter Bag In keeping with the tutorial spirit, Dave Mosinski is back again to demonstrate exactly how to measure a top load filter bag in order to obtain a quotation. The process requires capturing certain dimensions through various simple techniques that can be done in house. ## 3) Installation of a Top Load or Snap Band Style Tubular Filter Bag This short video shows the proper technique for installing a top load (“snap band”) style tubular filter bag. This simple process involves inserting the bag and cage into the dust collector and using the grooves on the snap band to facilitate placement. ## 4) Start-up Procedure for a Dust Collector or Baghouse Using appropriate start-up procedures with a new dust collector or baghouse system is important in extending the life of the equipment, especially the filter bags. This leads to lower costs and more efficient overall operations. In this video, Dave Mosinski explains these procedures and their benefits in the long run. ## 5) Sly Incorporated – About Us This introductory video serves as an overview for Sly Incorporated by explaining the organization’s history and showcasing the special skills that make Sly stand out from other air pollution control companies. Sly is a solution-oriented, high-quality air pollution control company with customer needs in mind. To inquire about any of the videos or to ask follow-up questions, contact Sly at 866-721-3545 and a representative will assist you. To see more videos like these, visit our YouTube channel at www.youtube.com/user/wwslyinc. [Contact Us](https://www.slyinc.com/contact/) [Dust Collection System](https://www.slyinc.com/blog/category/dust-collection-system/), [Dust Collector](https://www.slyinc.com/blog/category/dust-collector/) **Categories:** Dust Collection System, Dust Collector --- ### [How to Optimize Interstitial Velocity on Dust Collectors](https://www.slyinc.com/blog/how-to-optimize-interstitial-velocity-on-dust-collectors/) **Published:** June 13, 2016 **Author:** p1ws **Content:** When sizing a pulse-jet dust collector, it is important to consider not just air-to-cloth ratio but also interstitial velocity.  High levels of interstitial velocity in a dust collector can lead to unnecessary complications preventing efficient facility operations and process performance. Thus, it is important to be sure your interstitial velocity is at or below an acceptable optimal level. ## **What is Interstitial Velocity?** Interstitial velocity is defined as the upward velocity of the air through the open area between the filter bags inside a dust collector. Upward velocity occurs when a hopper inlet is used on a pulse-jet baghouse.  Dusty air is introduced into the hopper and travels upward into the filter housing where cleaned gas passes through the filter bags and dust is deposited on the exterior of the bags. Sometimes the term “can velocity” is incorrectly used to refer to interstitial velocity. The distinction is that can velocity is the upward velocity through the entire housing without taking into consideration the cross sectional area taken up by the filter bags; it may also be seen as the upward velocity just below the bags. If the interstitial velocity of the upward air flow is too high, then the dust pulsed off the bags during cleaning will not migrate downward to the hopper. Instead it will be re-entrained and carried back onto the bag surface. The results can be high pressure drop, excessive use of compressed air, and shortened bag life. Interstitial velocity is calculated as the air volume divided by the cross-sectional area of the collection minus the cross-sectional area of the bag: ## **What is Optimal Interstitial Velocity?** The optimal interstitial velocity is a function of several variables, including bulk density, particle size distribution, agglomerating/non-agglomerating tendencies of the dust, and inlet loadings. **Bulk Density:** The higher the bulk density of a dust, the greater its tendency to settle downward against the rising air. Therefore, higher interstitial velocities may be used for higher bulk density dusts. **Particle size:** The smaller the particle, the slower it settles or falls, and the greater the effect of upward air flow keeping the dust in suspension. Generally, smaller particle sizes should indicate the use of lower interstitial velocities. **Agglomerating/non-agglomerating:** Material that has a tendency to agglomerate (stick together) generally will be pulsed off more in “mass” than in discrete particles. Agglomerating particles may allow for the use of higher interstitial velocities. **Inlet Loading:** Inlet loading is the rate of the mass of solid material being introduced into the dust collector. Extremes of high and low loadings might allow slightly higher interstitial velocities. ### **Optimizing Interstitial Velocity on a New Dust Collector** Normally, when designing a new dust collector, the baghouse selection process involves dividing the incoming air volume by the desired or specified air-to-cloth ratio. The number of filter bags is then selected by choosing the maximum length bag and minimum quantity which allows for the required cloth area.  If these selection procedures are followed and interstitial velocity is higher than the recommended range, there are some optional considerations to explore. 1. **Change the length of the filter bags**. Resize the dust collector using 8 ft. bags instead of 10 ft. bags or change from 8 ft. to 6 ft., etc. 2. **Change the diameter of the bags**. Use a 4-1/2” dia. bag instead of a 5-3/4” dia. bag to make a dramatic reduction in interstitial velocity. Bag-to-bag spacing increases from 2” to 3-1/2”. 3. **Use a high inlet**. High inlets introduce the dusty air into the upper filter housing instead of the hopper, which essentially eliminates the upward velocity issue. 4. **Use wider bag row spacing**. Changing the distance between rows of bags from the standard of 8” centers to something greater will also reduce upward velocity. Remember to consider not only row to row spacing, but also the spacing between the bags in the row. 5. You may have to **use a combination** of these to achieve the required results. For example, to reduce upward velocity to <100 fpm, it may be necessary to use bag lengths of less than 10 ft. and also change the pulse row spacing to more than 8”. ### **Optimizing Interstitial Velocity on an Existing Dust Collector** In an existing collector installation, too high interstitial velocity can be a difficult condition and expensive to remedy. Possible modifications to reduce interstitial velocity include: 1. Increase the open area in the filter housing by changing to smaller diameter bags. This requires installing a new tubesheet. Note that an increase of the air-to-cloth ratio would result, but lowering the interstitial velocity may still improve the operation. 2. Change to smaller diameter bags with increased length to maintain required air-to-cloth ratio. In addition to changing the tubesheet, the filter housing must be modified to accept the longer bags. 3. Re-engineer the ventilation system to reduce air volume (CFM) entering the collector. 4. Install pleated bags. A pleated element has considerably more filter area than conventional bags, substantially increasing the potential cloth area. Rows of bags could be eliminated, reducing the can velocity while maintaining or even lowering air-to-cloth ratio. 5. Modify the filter housing with a high inlet section to eliminate upward velocity. Careful thought during the design stage on a new dust collector can provide a sound design and trouble-free operation. In the same line of thought, putting heavy consideration into the most price-efficient and appropriate alternation methods on an existing dust collector can drastically increase operation. For further questions regarding interstitial velocity, or to inquire about the optimal interstitial velocity for your collector, give Sly a call at 800-334-2957 and our experienced team of engineers will work to answer your questions. You can be certain with Sly! [Contact Us](https://www.slyinc.com/contact/) [interstitial velocity](https://www.slyinc.com/blog/category/interstitial-velocity/) **Categories:** interstitial velocity --- ### [5 Steps For Storing Your Dust Collection Equipment Long-Term](https://www.slyinc.com/blog/5-steps-for-storing-your-dust-collection-equipment-long-term/) **Published:** March 14, 2016 **Author:** p1ws **Content:** ## **Long Term Storage Procedures – Storage In Excess Of 1 Month** Long-term storage procedures are used to prevent damage to and preserve the operational capabilities of dust collection equipment that cannot be immediately installed when received at the job site. Generally, fabrication and shipment of equipment should be matched to the jobsite readiness so that it can be installed straightaway. But if it this is impossible and it becomes necessary to keep equipment on site for more than one month, it should be protected per the following procedures. **1. Cover unprotected openings** Dust collectors will be shipped to the jobsite with plenums fully gasketed and fastened together to the fullest extent possible. Generally, openings will be covered with plywood, plastic, or plugs. All of these coverings should be left intact if the unit is being moved to storage. If equipment is to be stored, any unprotected openings should be plugged or covered to keep rain, snow, and other moisture from entering the housing. This can be accomplished with plastic wrap, plastic plugs, or wooden coverings, depending on how large the opening is. **2. Store equipment in a controlled environment** If possible, collector housings, auxiliary components, and parts should be stored indoors in a temperature and humidity controlled environment.  For extended storage (longer than one month), place sorbent packs in any electrical enclosures to prevent humid air from damaging electrical components. If sufficient indoor storage for all equipment is not available, collector parts, bags, cages, etc. should be stored indoors or in dry, totally enclosed trailers or sheds.  Collector housings and larger components may be stored outdoors in a weather protected shed or off the ground on appropriate shoring and fully protected with tarpaulin or heavy plastic weather coverings. **3. Cover paint-protected equipment** Structural steel supports, framing enclosure steel, hand railings, and platform sections will be shipped in individual component pieces as described on the bill of materials for the unit.  All steel will be painted in accordance with the contract specifications.  The paint will provide adequate surface protection for a period of time. As a general rule, all equipment is finish painted so it possesses “long-term” weather protection for the metal.  However, materials such as support steel are generally stored laying on their side and rain/snow/dirt can pool on the horizontal surfaces. These pools can hasten potential corrosion, especially since contact between surface and moisture is prolonged. If prolonged storage is necessary, the support and access steel should be stored carefully and protected by weather covering, especially during changes in seasons or during severe inclement weather. **4. Remember to inspect periodically** All equipment stored outdoors should be inspected periodically to monitor the integrity of the weather cover and the condition of the painted surfaces.  Any rips or tears in coverings should be immediately repaired. Any areas on the collector, auxiliary equipment, or support steel members where water or debris are collecting should be propped up to reduce the probability of future problems. These areas can be propped up with wood, other steel members, etc. Think of a camping tent and affix a center pole or cross members to keep rain from pooling on top where it could eventually leak to the inside. **5. Special care for accessories** -  Rotary airlock valves Remember, interior surfaces of rotary valves are not coated.  Prior to storage, spray the interior of the valve with anti-rust preservative oil. Also, provide and install metal covers for the inlet and outlet flanges with at least four cap screws in each flange.  Keep these covers on until you are ready to use the valves for service. Next, completely fill the worm gear speed reducers with oil and replace the vented fill plug with a solid plug.  Be sure to retain the vented plug for future operation. Then, read and follow the motor, speed reducer, and other equipment manufacturer’s instructions for long-term storage. After completing the above steps, plug all conduit box openings on the motors and switches and store the valves off the floor in a dry, adequately ventilated, indoor area without extreme temperature changes. Turn the rotor a couple of revolutions every six months and leave the rotor in a different angular position after each turning. - Screw conveyors Interior surfaces of screw conveyors are generally not coated.  Prior to storage, spray the interior of the trough and screw with the same anti-rust preservative oil you used on the rotary airlock valves. And again, provide and install metal or wood covers for the inlet and outlet flanges. Make sure the covers are properly secured to provide adequate protection for the internal components. Completely fill the worm gear speed reducers with oil and replace the vented fill plug with a solid plug. Retain the vented plug for future operation. Then, read and follow the motor, speed reducer, and other equipment manufacturer’s instructions for long-term storage. Finally, plug all conduit box openings on motors and switches and store the screw conveyors off the floor in a dry, adequately ventilated, indoor area without extreme temperature changes. Turn the flighting a couple of revolutions every six months and leave it in a different angular position after each turning. - Exhaust Fans Because it’s important that stored fans are protected from dirt and moisture, use a tarp or other weather tight covering for protection.  Take care to avoid the use of black plastic tarps that may promote condensation on the equipment. Bearings should be purged monthly with new grease to remove condensation and the fan wheel should be rotated by hand at least once every two weeks. This prevents bearings from “setting” and redistributes the bearing components. Fans must also be isolated from any nearby vibration. High overall vibration levels can prematurely damage the fan and motor bearings. When you are ready to use the equipment, purge the bearings with new grease before startup. Perform this procedure to operating level according to the bearing manufacturers’ specifications. [Contact Us](https://www.slyinc.com/contact/) [Dust Collection Equipment](https://www.slyinc.com/blog/category/dust-collection-equipment/) **Categories:** Dust Collection Equipment --- ### [Is Your Dust Collection System Ready for a Change in Seasons?](https://www.slyinc.com/blog/is-your-dust-collection-system-ready-for-a-change-in-seasons/) **Published:** November 14, 2017 **Author:** p1ws **Content:** As summer gives way to autumn, you may notice a little nip in the air (depending on where you are). Leaves changing color, the start of football season and pumpkin-flavored everything are sure signs of the change in the season. While enjoying these, it’s also a good time to consider the challenges that changing seasons can cause for outdoor dust collector operations. Below are a few examples of seasonal conditions that affect dust collection systems and how you might deal with them. ## Moisture First, and foremost, moisture can affect a dust collector in two primary ways. ### Internal Condensation For non-insulated dust collectors, cooler weather will cause more heat loss through the collector walls. This may lead to dew point excursions and condensation of moisture from the inlet air onto the dust collector walls and other internal components, including the filter bags. Free moisture inside the dust collector will mix with the collected dust and create a wet or muddy cake on the filter bags. This can cause operation at higher differential pressures and contribute to loss of conveying air throughout the system. Insulating the collector walls, and in some cases, installation of heating elements on the hopper and housing can help prevent this from happening. ### Ice Crystals For pulse-jet dust collectors, cold weather will reduce the temperature in the valves and associated tubing. If the temperature drops below the rated dew point of the compressed air, ice crystals can form in the valves and tubing that will prevent the pulse cleaning system from operating properly. Installation of a good dryer on the compressed air system can reduce the dew point to a level below the lowest expected ambient temperatures and prevent formation of ice within the system. In addition, heated thermostat-activated solenoid enclosures can be used to maintain a temperature above freezing to prevent the valves from sticking due to ice formation. ## Fan Performance in Cold Air Cold air is denser (heavier) and requires more force (horsepower) to move it. Most fans are designed for operating conditions that are at or above 70 degrees F. When you start up the fan in colder temperatures, it may draw more amperage than the motor starter can handle, causing the motor to trip out. This is often mistaken as a fan problem when it is more a weather-related system operation problem. A solution is to damper the fan back significantly so it will only draw a smaller volume of air through the system, which reduces the horsepower requirement and, subsequently, the amperage draw on the motor.  As the system comes up to temperature, the damper can be opened back up to the full design flow condition. ## Heat Issues On the flip side of colder temperatures are issues with heat. High outdoor temperatures can cause significant problems with control panels and electrical boxes during summer months. The interior of the boxes can heat up significantly and most internal electronics do not respond well to higher temperatures. The best way to solve this is to locate these out of direct sunlight as much as possible. Another option is to install air-conditioning units on larger enclosures. These are just a handful of effects that a change in seasons can have on your dust collection system. Your best bet is to consult with dust collection experts to design the right solution that takes these issues into consideration from the start. Sly has more than 143 years of experience and has dealt with just about any issue you may face. We know what questions to ask to avoid potential pitfalls so you save time and money. [Request a quote](https://info.slyinc.com/request-quote) or call us at 1-866-721-3545 for more information. [Request a Quote](https://www.slyinc.com/contact/request-a-quote/) [Dust Collection System](https://www.slyinc.com/blog/category/dust-collection-system/) **Categories:** Dust Collection System --- ### [How to Choose a Dust Collection System](https://www.slyinc.com/blog/how-to-choose-a-dust-collection-system/) **Published:** September 21, 2021 **Author:** p1ws **Content:** Whether you’re a large commercial or small business, managing dust collection is a serious consideration. There may be myriad (oftentimes contradictory) considerations, so the best solution is to consult with experts in the dust domain. Life is full of choices. The trick is to ensure that you make the correct decisions. The problem is that the “obvious solution” may not provide the best option, depending on your specific circumstances. In the case of dust collection, for example, there are two main options, dry dust collectors and wet dust collectors (scrubbers), but which type is right for you? ## What Type of Dust Collector is Best: Wet, Dry, or Both? Not surprisingly, a large part of deciding on a dust collection system involves the dust itself. Where is the dust collector to be deployed? Which air quality standards are you required to meet? What size (or range of sizes) of dust particles is involved? Is it necessary to recover and reuse any collected dust particles or discard them? Is the dust combustible (something that can burn in air), flammable (a combustible material that can ignite at ambient temperatures), and/or explosive? Will the dust require special treatment and handling because it is poisonous, toxic, corrosive, and/or carcinogenic? And, of course, what is your dust load? How much dust do you need to collect, handle, and (potentially) dispose of? How do you determine this value? When it comes to the systems used to collect the dust, dry dust options include baghouse collectors, cartridge collectors, and reverse air cyclones. Baghouse collectors are the preferred solution for the largest dust loads, cartridge dust collectors may be a better choice for dry, free-flowing dust, and reverse air collectors may be the ideal option if you need to save on energy or have limited access to a supply of quality compressed air. ![](https://www.slyinc.com/wp-content/uploads/2024/08/Sly-wet-scrubber.webp "Sly wet scrubber | Sly Air Pollution Control") Dust collectors that use liquid are known as wet scrubbers. In these systems, the scrubbing liquid (usually water) is introduced to a gas stream containing the dust particles. Greater contact of the gas and liquid streams yields higher dust removal efficiency. Wet scrubbing options include impingement, venturi, eductor, and packed-tower scrubbers. One very important point to note is that choosing between dry dust collection and a wet scrubbing option may not be a binary decision. In certain situations, the most advantageous solution may be to use representatives of the two types in combination. ## Contradictory Considerations Even if you know everything there is to know about the dust you wish to collect, and even if you are familiar with the various wet and dry dust collection techniques and technologies available, there are still “gotchas” lurking out there for the unwary. Consider a large industrial mixer in which dust escapes as a dry material is added to a liquid, for example. One’s initial thought may be that a dry dust collection system may offer the best solution since the material itself is dry. In this case, however, the dust extraction fans may draw moisture from the liquid in the mixer, blocking the filters by a sticky gunk. Thus, even though the material itself is dry, a wet scrubber may offer the best option in this scenario. Many types of dust are combustible, which can lead to explosions if not handled correctly. Examples include metals, coal, and most organic materials (flour, sugar…). The finer the particles, the greater the risk and the larger the potential for explosion. Using a wet scrubber minimizes the risk of explosion, so this may seem to be the obvious choice. In many applications, however, it is required to recover the collected product, which moisture may adversely affect. If a dry dust collection system is used, it must be designed with appropriate isolation solutions, suppression systems, dampers, and explosion vents. ### How Big of a Dust Collector System Do I Need? In the case where space may be an issue, cartridge filters may offer a smaller footprint over baghouse dust collectors. However, many substances — including salts, sugars, and cellulose particles (such as those from cotton and paper) are hygroscopic, which means they attract and hold onto water molecules from the surrounding environment. Cartridge filters cannot tolerate moisture because it makes them hard to clean. By comparison, the pulsing and flexing of baghouse filters dislodge the hygroscopic particles before they can gather and block the filter. In some cases, there are myriad considerations that appear to contradict each other. For example, the majority of baghouse dry dust collectors are designed to be operated at 500°F or lower, but some industrial processes involve temperatures of 800°F or higher. One option is to equip baghouse filters with high-temperature filters made from ceramic materials, but these can be extremely expensive. An alternative is to use a wet scrubber, which can dramatically reduce the temperature of the dust being collected. However, this can lead to problems associated with the disposal or treatment of the ensuing slurry. For a smaller company that doesn’t already have water treatment facilities available, using a third-party may be cost-prohibitive. By comparison, this may not be a consideration for a larger company with suitable on-site water treatment capabilities. So, what would be the optimal solution in this case? It’s time to call in the experts. ## Bring Us Your Problem As we’ve seen, when it comes to dust collection, there may be myriad (oftentimes contradictory) considerations. In certain situations, the most advantageous solution may be to combine wet and dry dust collection systems. In all situations, your best starting point is to consult with experts in the dust domain. An old saying goes: “If the only tool you have is a hammer, everything looks like a nail.” The underlying concept is that single-minded people apply them inappropriately or indiscriminately when equipped only with limited tools. Unfortunately, this applies to a wide variety of situations, including dust collection. As we’ve discussed, many dust collection problems may potentially be addressed using either dry or wet techniques. The issue is that most developers of dust collection systems specialize either in dry dust collectors or in wet scrubber systems. As a result, when faced with a dust collection problem, they may be tempted to promote their solutions, even if they know that better alternatives are available in terms of cost, efficiency, energy usage, and so forth. By comparison, in addition to the fact that Sly, LLC has been helping companies to collect their dust and run clean and efficient for over 100 years, we are one of the few designers and manufacturers to offer both wet and dry dust collection systems. Furthermore, we don’t believe in a mass-produced “one size fits all” approach; instead, the flexibility of our engineering techniques allows us to customize solutions to better fit the task at hand. We have 100 years of experience, and we love collaborating with our customers. Bring us your dust collection problem, and we will work with you to develop and customize the optimal solution that fully addresses your unique operation and application requirements. [Contact Us](https://www.slyinc.com/contact/) [Dust Collection System](https://www.slyinc.com/blog/category/dust-collection-system/) **Categories:** Dust Collection System --- ### [Total Dust Management](https://www.slyinc.com/blog/total-dust-management/) **Published:** February 1, 2022 **Author:** p1ws **Content:** ## Your Questions Answered in Our Must-See Video If you have a dust problem in your facility, you need a solution, but before you rush out and buy a dust collector system “off the shelf,” there are some things you need to consider. In fact, you should never rush into a dust collector purchase. Choosing the right dust collector system, whether a dry dust collector or a wet scrubber system, should be a carefully weighed decision that revolves around a central concept: Total Dust Management. What do we mean when we say Total Dust Management? We explore that topic in some depth in this [blog post](https://www.slyinc.com/blog/what-is-total-dust-management/). **And you do not want to miss our latest [educational video ](https://www.youtube.com/watch?v=IaOQcTF2AfA)**on the subject, presented by our dust management expert, Bill Kurz, regional manager. Total dust management is about taking a full-service, systematic approach to dust control, where air quality experts help you specify the right collector for the job. Total Dust Management benefits include the following: - Improved dust control - Higher dust collection efficiencies - Longer collector life - Reduced downtime Total Dust Management can help you assess the extent of your dust problem, determine the right dust collector for your needs and, most importantly, help you find the ideal dust collector partner to help guide you throughout the process. Remember to watch our brand-new [Total Dust Management video](https://www.youtube.com/watch?v=IaOQcTF2AfA) to learn more about the process from an experienced dust collector expert. And, as always, contact Sly with any questions, and our team of experts will be happy to help. [Contact Us](https://www.slyinc.com/contact/) [Dry Dust Collector](https://www.slyinc.com/blog/category/dry-dust-collector/), [Dust Collection System](https://www.slyinc.com/blog/category/dust-collection-system/), [Dust Collector](https://www.slyinc.com/blog/category/dust-collector/), [Dust Collector Maintenance](https://www.slyinc.com/blog/category/dust-collector-maintenance/), [Industrial Dust Collector](https://www.slyinc.com/blog/category/industrial-dust-collector/), [Wet Scrubber](https://www.slyinc.com/blog/category/wet-scrubber/) **Categories:** Dry Dust Collector, Dust Collection System, Dust Collector, Dust Collector Maintenance, Industrial Dust Collector, Wet Scrubber --- ### [Should I Replace My Filter Bags or Clean Them?](https://www.slyinc.com/blog/should-i-replace-my-filter-bags-or-clean-them/) **Published:** June 1, 2022 **Author:** p1ws **Content:** Since we’ve been in the dust collection business for close to 150 years, it’s not surprising that we hear questions covering all aspects of this field. For example, we are often asked about cleaning filter bags in dry dust collectors. Is cleaning your filter bags a more cost-effective solution than simply replacing the old bags? Spoiler alert; the answer is a resounding “No!” (See also [*3 Reasons to Replace Your Dust Collector Filter Bags*](https://blog.slyinc.com/3-reasons-to-replace-your-dust-collector-filter-bags)). ## How Many Filter Bags Are We Talking About? Some people think that the decision concerning cleaning or replacing [filter bags](https://www.slyinc.com/products/fabric-filter-media-options/) will be a function of the number of bags involved. Although this is not, in fact, the case, it’s worth noting that there are almost as many dust collection architectural scenarios as the companies that are using them.![Dry filters image](https://www.slyinc.com/wp-content/uploads/2024/08/Dry-filters-image-4.jpg) For example, a small “mom-and-pop” operation may have only one dust collector with 20 filter bags, while a large enterprise might have 100+ dust collectors, each with 1,000 bags. The importance of this is that the entire dust collector must be shut down to clean or replace even a single bag, so—whatever filter bag option you choose (clean or replace)—it’s a good idea to do it to all of the bags in a particular machine at the same time. ## Taking the Pulse When the dust collector is running, dust particles build up on the outside of the filter bag. Some of these particles work their way into the fabric of the bag. In the case of today’s pulse jet (also known as pressure-jet) cleaning, a high-pressure blast of air is used to remove dust from the bag. The time between pulses is dependent on the application. In some cases, this time may be as short as 10 seconds. In other cases, a pulse may occur every minute or two. Pulsing the bag stretches and weakens its fabric, albeit by a small amount, so minimizing the number of pulses if they are not required is beneficial (it also saves on compressed air). For this reason, some systems only pulse on demand when the pressure drop across the system reaches a specified value. ## Feeling the Pressure? Suppose your cleaning system is working correctly with pulsing occurring at the regular rate, but you are running with a high-pressure drop that’s substantially above the historical average. In that case, this indicates the bags are clogged up. You will need to clean or replace them. A side effect of this high-pressure drop scenario is that the air volume transporting the dust is lowered, which means you will not obtain sufficient ventilation at your pickup points. An alternative scenario is that you aren’t experiencing a high-pressure drop, but you see dust emissions coming out of the stack, signifying that you have one or more tears in your bags, which—in this case—dictates that you need to replace them (there’s no point in cleaning a bag that has holes in it). ## Cleaning Isn’t All It’s Cracked Up to Be The idea of cleaning filter bags may, at first, appear to be an attractive option because it would seem to offer a way to extend the lifetime of the bags. But then you have to consider how the bags are to be cleaned. First, you will have to pulse the bags as hard as possible, stretching and stressing them. When it comes to the actual cleaning, you could beat the bags, but—once again—this will stress them while also releasing clouds of dust into the air. Alternatively, you can pass them through industrial washing machines, which will cost money (especially if you have to send the bags to another company to be cleaned). In addition to stressing the bags, the washing process can cause shrinkage, which will lead to additional stress when the bags are stretched once again as part of being returned to service. ## How Important is Dust Collection to Your Operation? The most significant deciding factor in all of this is considering the importance of dust collection to your operation. If you need to run 24/7 for most of the year, with some downtime once or twice a year for scheduled maintenance, for example, then it makes sense to service your filter bags as part of this maintenance cycle. (See also, [*Cleaning Up with Cartridge Filters*](https://blog.slyinc.com/cleaning-up-with-cartridge-filters).) One way to think about this is that it costs you the same amount of money to take the bags out, whether you clean or replace them. Similarly, it costs you the same amount of money to put the bags back in, whether you clean or replace them. So, the only differentiating factor here is the cost of cleaning old bags versus purchasing new bags. A more important differentiating factor is the cost of unexpectedly shutting your operation down. Knowing that cleaning filter bags stresses them, thereby increasing the chances for a catastrophic failure that may shut down your operation, then replacing the bags is the obvious way to go. Of course, this doesn’t mean you have to replace all of your bags every time your plant shuts down. Bags typically need to be replaced every one to three years, depending on the application and the environment (some companies only need to replace their bags once every five years, while others find that even one year is too long). If you have two machines and your bags need to be changed once each year, it may be a good idea to stagger the process, replacing the bags in the first machine one year and the second machine the following year, thereby spreading the costs. In certain extreme cases where it’s considered mission-critical for the plant to run 24/7/365, one solution is to have an extra dust collector in the system. This allows different units to be isolated and powered down for cleaning while the other collectors maintain operation. The main thing is to stay ahead of the curve. If your bags last 18 months, scheduling replacement every 12 months may be good to be safe. ## In Summary Although the cleaning option may be a little cheaper in the short term, it can be significantly more expensive if things go wrong in the long term. Thus, taking all of the considerations and discussions presented above into account, our position and recommendation are that the safest option is always to replace filter bags rather than clean them. Selecting the best dust collection system—including the most appropriate filter media and filter finish (or finishes)—is a multi-dimensional problem. The optimal answer depends on many factors. The best solution is to [ask the experts at Sly](https://www.slyinc.com/contact/) to evaluate your unique dust collection situation and offer their expert advice. [Contact Us](https://www.slyinc.com/contact/) [Bag Filter Cleaning](https://www.slyinc.com/blog/category/bag-filter-cleaning/), [Dust Collector Replacement Bags](https://www.slyinc.com/blog/category/dust-collector-replacement-bags/), [Dust Filters](https://www.slyinc.com/blog/category/dust-filters/) **Categories:** Bag Filter Cleaning, Dust Collector Replacement Bags, Dust Filters --- ### [Nothing to Sneeze At—5 Keys to Improving Dust Removal Efficiency](https://www.slyinc.com/blog/nothing-to-sneeze-at-5-keys-to-improving-dust-removal-efficiency/) **Published:** August 26, 2022 **Author:** p1ws **Content:** There are at least five keys to help improve your dust collection system and greatly reduce if not eliminate these consequences by increasing dust collection efficiencies for a cleaner, safer work environment and enhanced product quality and production. ## Five Keys to Improving the Efficiency of Your Dust Collection System  Air filtration systems supply a critical function in almost every industry where the presence of dust can pose serious consequences that can impact workplace safety, air permit compliance, and ultimately corporate finances. These can include employee health, regulatory fines, air permit violations, damaged equipment, reduced product quality, and unplanned shutdowns—not to mention the bad press and costs associated with resolving these issues. ![blog.slyinc.comhubfsRP6-1385 Iron Mountain STJ-1714-10 (4.5) HI 2](https://www.slyinc.com/wp-content/uploads/2024/08/blog.slyinc.comhubfsRP6-1385-Iron-Mountain-STJ-1714-10-4.5-HI-2-1-scaled.jpg)These air filtration systems or more commonly called, dust collection systems, are engineered and designed to capture the majority of airborne particles that result from utility, industrial, mining, pharmaceutical, food-related or agricultural practices, before these particles can negatively impact worker and workplace safety, product quality,  plant production, and emissions to the environment. Dust collection systems help companies comply with air pollution control or air quality workplace standards established by federal, state or local governing bodies, including the Environmental Protection Agency (EPA), the National Fire Protection Association (NFPA), the Occupational Health and Safety Administration (OSHA), and more.  There are at least five keys to help improve your dust collection system and greatly reduce if not eliminate these consequences by increasing dust collection efficiencies for a cleaner, safer work environment and enhanced product quality and production. - System Design - Filter Bag Media/Material Selection - Proper Bag Installation - Regular Maintenance - System components ## System Design Establishes Firm Foundation for Dust Collection Efficiency  System design impacts dust collection efficiency and operational costs from the start, with several factors playing a critical role in an engineered dust collection system. A pulse jet dust collection system, or a baghouse system, operates through a high-pressure air cleaning that discharges a pulse or blast of air through an air filter, or bag, that dislodges the majority of the dust cake for disposal. During the design phase, below are some of the important factors to consider when designing a baghouse: **Air to cloth ratio**—The air to cloth ratio ensures adequate surface area to capture the dust based on the flow rate. The type of material being captured as well as the inlet dust concentration and required removal efficiency are all factors used to determine the proper air to cloth ratio. **Interstitial velocity**—This factor is directly related to bulk density of the captured material. It is defined as the upward velocity of the air through the open area between the filter bags inside a dust collector. If it is too fast, when the controller pulses, the material will tend to stay in suspension and be recaptured on the bag rather than fall into the hopper. **Material characteristics**—These can include factors such as: - *Particle size*—For extremely fine matter, the design might feature a high inlet baghouse, with the baghouse inlet located on top of the unit rather than through the hopper. - *Moisture level*—This would include moisture level in the material itself or the relative humidity of the plant or processing environment. Special design features can accommodate moisture levels, or oily material/dust collection. - *Abrasiveness*—Highly abrasive materials might call for special design features such as an abrasive inlet or guards on the bags, prevent bag erosion. **Regulatory Requirements**—All SLY systems are designed to help facilities comply with federal and local regulatory bodies. Access platforms and ladders are designed to OSHA specifications. **Environment**—Any baghouse design should take into consideration environmental factors related to its location, such as wind loading, snow loads, live loads and seismic loading (earthquake). ## Media Selection for Baghouse Filters The number of filter bags and the type of material used for the filter bag is dependent upon the objectives for dust capture and local or state regulations. Some bag media or materials can achieve higher particulate removal than others. This choice of bag media is determined by the following factors: - The characteristics of the particulate that requires capture (i.e. particle size distribution, abrasives, moisture, followability, etc.) - Required emission rates - Gas characteristics (i.e. gas composition, operating temperature, humidity, etc) In facilities with more stringent emissions policies, bag options can include a tighter weave or membranes to achieve greater filtration. Emission allowances vary from one locale and in the U.S., from one state to another. For example, California has stricter emissions policies than some other states. ## Properly Installed Filter Bags Close the Gap  Typically, the customer’s contractor or construction firm will install filter bags into a new baghouse. The bags must be installed with the proper sealing method, otherwise the dust particles will bypass the bags. In addition, improper installation practices can rip or tear the bags, which also would decrease or void their dust collecting capacity. Depending on system design, filter bags are either top-loaded or bottom-loaded. Bottom-loaded bags must have properly tightened clamps to eliminate any gaps. Top-loaded bags have a band at the base which must seal against the tube sheet. ### **Various Signs That Indicate Improper Bag Installation:**  - Loose seal against the tube sheet (the point where the bags connect to the system) - Bags that turn easily - Loose clamps (on bottom-loaded bags) ## Scheduled Maintenance Helps Determine Bag Replacement  While a pulse system baghouse offers years of reliable operations, the bags themselves, or the filters, will need eventual replacement. An optimized controller that cleans the bags to the right degree and on a regular cycle helps minimize the amount of cleaning cycles, which results in lower compressed air usage, reduced filter wear and lower operating differential pressures to reduce energy consumption. The controller determines bag cleaning cycle, which is commonly based on a timed cycle or pressure drop. When the pressure drop reaches a preset pressure, it automatically initiates a pulse or cleaning cycle. This pressure drop offers a key indicator for bag replacement. A change in pressure drop outside of the norm indicates the bags are starting to “blind” or become so loaded with dust they can no longer be cleaned effectively and must be replaced.  Higher than optimal system differential pressure results in higher operating costs. Cleaning the bags to the right degree means not pulsing or cycling too frequently. Each bag should retain a certain amount of caked up dust, because this helps with the filtration. An experienced baghouse operator knows a bit of caked dust on the bags aids with system efficiency. As a general rule, a bag inspection is recommended once per year. If the dust or particles collected are more abrasive, this could translate into a more frequent bag inspection. Bag changes are easy with a SLY LLC “no tools required” design. ## Components and Services that Complement Baghouse Functions   For baghouses that are used for nuisance dust collection, it is important to have a properly designed industrial ventilation system to effectively vent the material from the work area to the baghouse. Typically, a fan pulls air through a specially designed hood via the duct work to the baghouse. The fan needs to provide enough flow and suction to capture all the dust generated through processing.  An adequate flow keeps the air and particulate moving through the duct work dust collection. The use of energy efficient motor (EEM) can be used as a tool to reduce operating coat of the system. An EEM is a motor that gives you the same output strength by consuming lesser amounts of power. This motor doesn’t necessarily impact dust collection efficiencies; however, it can help with overall operational costs for energy expenditure. As part of SLY startup services, customers can take advantage of commissioning, that starts up and tests equipment for proper bag installation. SLY also provides operator training for operations, care and maintenance of the baghouse and dust collection system. Protect your workforce and workplace, avoid high emissions and maintain plant productivity with an engineered dust collection system from SLY, LLC. Questions about improving the efficiency of your dust collection system? Our engineers are available to help determine the specifications for an efficient baghouse system for your processing environment. [Learn About Replacement Parts](https://www.slyinc.com/replacement-parts/) [Dust Collection Equipment](https://www.slyinc.com/blog/category/dust-collection-equipment/), [Dust Collector](https://www.slyinc.com/blog/category/dust-collector/), [Dust Collector System](https://www.slyinc.com/blog/category/dust-collector-system/) **Categories:** Dust Collection Equipment, Dust Collector, Dust Collector System --- ### [How Does a Lithium Dust Collector Work? ](https://www.slyinc.com/blog/how-does-a-lithium-dust-collector-work/) **Published:** April 4, 2023 **Author:** p1ws **Content:** Dust is a concern in every industry, yet dust characteristics and industry needs differ, dictating varying approaches to its collection. Effective industrial dust removal improves plant safety, assists with plant maintenance, improves air quality and decreases potential health hazards. Lithium processing produces its share of dust, characterized by its high reactivity and combustibility. When milled to the micron level required during battery production, for example, it is exceptionally light, reactive to moisture and prone to become airborne. Lithium is a metal, although the least dense. It also is highly reactive to its surrounding environment. This reactivity is one factor that makes lithium an ingredient of choice within batteries. The lion’s share of processed lithium is destined for batteries that power electronics, electric vehicles, or store energy in the grid. Rechargeable lithium batteries for these purposes account for 74% of global lithium demand. A recent industry analysis predicted the lithium-ion battery market will grow at a CAGR of 30% through 2030, making it a lucrative industry for the foreseeable future. This growth considers the entire battery cycle, from mining to recycling. ![lithium 2](https://www.slyinc.com/wp-content/uploads/2024/08/lithium-2-3.jpeg) ## Lithium Dust Collection is an Industry Necessity Many steps, from ore or brine to battery components, can produce lithium dust. Its collection is vital for numerous reasons, including the potential recycling of a valuable resource back into the manufacturing process. Some of the stages that can produce lithium dust include: - Mining: When mining lithium from hard rock, the blasting and drilling can create dust. In the case of brine extraction, evaporation ponds also can produce lithium dust as the water disappears and the lithium concentration increases. - Crushing: Once lithium-bearing ores are extracted, they often are crushed and milled to reduce the rock size. This process creates dust as the ore is broken into smaller pieces. - Milling or grinding: A mill or grinding equipment takes the lithium and processes it to achieve a final, specific size. Milling equipment can size down the lithium to five microns or fewer dust particles. - Drying and packaging: Brining leaves behind a slurry of ever more concentrated lithium as the water evaporates, and this slurry requires drying to reduce the moisture yet further. During drying and packaging, this light material requires collection to protect workers and the environment and recapture a precious resource. ## What Types of Dust Collection Equipment are Used in Lithium Processing? A few types of dust collection systems can help with lithium dust collection. These can include cyclones, baghouses and loading spouts. A **cyclone** is a dust collection system that uses centrifugal force to separate particles from a gas stream. As the gas enters the cyclone through an inlet, it spins rapidly around the inside of the cylinder. The centrifugal force of this movement forces the heavier particles to be thrown outward toward the cylinder walls. The particles slide down the walls for collection at the bottom of the cyclone. The remaining cleaned gas stream can go through additional filters or be returned to the environment. A cyclone is a standard dust collection system used for mining operations or when lithium is rough cut. In a [baghouse system](https://www.slyinc.com/tubejet-baghouse-dust-collectors/), the air containing dust is drawn through the bags, which trap or collect the dust on their surface or inside fabric filters. Clean air returns to the work environment, and the captured dust is collected for disposal or recycling into the process stream. Baghouses feature prominently as dust collection systems for lithium dust, so we will explore that a bit more, below. A **loading spout** helps contain the dust as it is discharged into a container or transportation to the next stage of its processing journey, such as a truck or rail car. ## The Process of Lithium Dust Collection Using a Baghouse Lithium processing typically involves the handling of fine powders and particles that can become airborne and pose a health hazard or safety risk. ![lithium 1](https://www.slyinc.com/wp-content/uploads/2024/08/lithium-1-5.jpeg)The contaminated air containing dust particles is drawn into the dust collector through its inlet. Dust particle variables dictate the placement of the inlet on the baghouse. Sly LLC has a staff of design engineers that work closely with clients to modify baghouse features for optimal efficiencies, such as inlet placement and filter media selection. The air passes through a series of filters, which capture and trap the dust particles. The type of filter used will depend on the size and characteristics of the dust particle being collected. The filtered air is discharged from the dust collector through an outlet. As the dust particles accumulate on the filters, a timed system causes the dust particles to release and fall to the bottom for collection. Filter media selection can enhance dust cake release, with filter selection related to dust characteristics and moisture or humidity levels. The dust either falls into a bin or hopper for disposal or passes onto a conveyor for reentry into the processing stream. Dust collectors often are equipped with additional features, such as explosion vents or fire suppression systems, to reduce the risk of fires or explosions caused by the presence of potentially combustible dust particles. Looking for a partner to help select the right equipment for lithium dust collection? Sly LLC has worked with customers in the lithium processing industry for over twenty years, backed up by a company history that spans more than 100 years in the dust collection industry. Call Sly LLC today or download our recent white paper on lithium processing and dust collection by clicking [here](https://www.slyinc.com/resources/white-papers/a-matter-of-microns-lithium-dust-system-selection-when-every-mote-counts/). Author: Dave Mosinski, Regional Sales Manager Dave has been in the dust collection industry and with Sly for over 26 years. [Contact Us](https://www.slyinc.com/contact/) [Dust Collector System](https://www.slyinc.com/blog/category/dust-collector-system/), [Dust Collectors](https://www.slyinc.com/blog/category/dust-collectors/), [Lithium](https://www.slyinc.com/blog/category/lithium/) **Categories:** Dust Collector System, Dust Collectors, Lithium --- ### [Top Reasons Why Biomass Dust Collection Demands a Customized Approach](https://www.slyinc.com/blog/top-reasons-why-biomass-dust-collection-demands-a-customized-approach/) **Published:** April 13, 2023 **Author:** p1ws **Content:** Nations around the globe are looking for alternative fuels that are renewable, carbon neutral and/or can be used to break fossil fuel dependency. Switching to biomass fuel sources can help reduce greenhouse gas emissions and contribute to sustainability goals. Biomass not only provides energy and fuel, but it also can be used in the production of numerous biomaterials and biochemicals that can be used for paints, detergents, industrial adhesives, bioplastics, composite materials, cosmetics, supplements and food additives. However, the collection, processing and handling of biomass can pose unique challenges because biomass is a broad category encompassing multiple types of feedstocks with varying properties. This means that dust collection resulting from biomass processing will require a customized approach. This blog post outlines several reasons this approach is necessary and how working with an experienced dust collection equipment provider like Sly, LLC can supply the right solution to overcome biomass dust collection challenges.  ![biomass 1](https://www.slyinc.com/wp-content/uploads/2024/08/biomass-1-3.jpg) ## **What Are Examples of Biomass Feedstocks?**  Biomass feedstocks refer to organic materials that generate energy or are used to produce products through various processes such as combustion, gasification, fermentation and other techniques.  A variety of sources supply biomass feedstock, some of these sources are as follows: - Wood processing (i.e., wood chips, sawdust, bark, branches, leaves/needles, etc.) - Agricultural waste (i.e., ranging from straw and corn stover to manure from livestock operations) - Dedicated energy crops (plants grown specifically for energy production, such as switchgrass) - Municipal solid waste (such as cardboard, paper, textiles, food waste, etc.) - Algae (grown in ponds or tanks and harvested for energy production or other products) - Food Waste Biomass challenges energy operations and other manufacturing processes because of its varying properties and the fact that some sources are seasonal and unavailable all year. In addition, the environmental systems that deal with biomass for dust collection, acid gas removal or odor control need to consider all these factors for a design that optimizes system removal efficiency and overall performance. These factors include: - **Feedstock variability**. Biomass feedstocks can vary significantly in terms of both physical and chemical properties, such as size, shape, density, moisture content and composition. Even within the same “family” of biomass types, such as wood chips and sawdust, which both originally come from a tree, you can have different properties and require other handling methods. This variability is the primary reason why biomass dust collection requires a customized approach. - **Potential combustibility**. Any explosion risk is related to the material characteristics, particle size, concentration, moisture content, and oxygen availability. Biomass dust used for energy production or other processes can also pose an explosion risk due to its potential combustibility from the dried source. In this case, a “customized” approach means adding practical safeguards necessary to help minimize the risk and ensure safe operation. These measures can include explosion relief vents, explosion isolation, spark detection, and suppression. - **Environmental regulations**. While biomass in general can help reduce greenhouse gas emissions, the dust it produces is or can be a source of air pollution. Emissions from wood products, for example, or paper mill residue, can carry known carcinogens. Combustion of biomass could result in volatile organic compounds (VOC) emissions. A wet scrubber can capture VOCs with 95-99% efficiency. - **Material compatibility**. Factors such as dewpoint of the acid, water or other condensable substances present in the can stream can significantly impact equipment selection, design and materials of construction in the system or bag materials. Since biomass sources can stem from various organic materials, the chemical composition also varies greatly. For example, some biomass processes could produce excessive acid in their gas stream. This requires unique materials that include fiberglass, stainless steel or Hastelloy. Another factor with acid might be the form it takes. For dry dust collection, if the acid is in vapor form, it will pass through the filters in a baghouse and not cause significant corrosion issues. However, when the acid condenses to form a liquid, it can erode metal housings and degrade filters. This can cause more frequent bag replacement and maintenance issues, or even system failure. - **Maintenance and cleaning**. Careful media selection for the filters within a baghouse can help stave off unnecessary maintenance and ensure that the proper emission levels are acheived. Many types of biomass materials, due to their organic nature, produce a lot of dust. Regularly scheduled maintenance ensures proper system functioning. ![biomass 2](https://www.slyinc.com/wp-content/uploads/2024/08/biomass-2-1.jpg) A proper baghouse or wet scrubber design will consider these factors and as a result will easily achieve required emission compliance and ease of maintenance.  For baghouse applications, most designs include a cleaning system that provides a blast of compressed air that is injected through a blowpipe over each row of bags via a venturi. These design elements also include easy-access doors to help reach the filter media when replacing the bags. ## **How Does the Bag Cleaning Controller Self-Clean the Baghouse Filter Media?**   Bag cleaning controls include a solid-state timer with pressure module for on demand (based on a pressure drop set point) or for continuous adjustable timed sequential control of the pulse-cleaning operation. This controller sequentially pulses compressed air in a reverse direction down the length of each bag in a particular row in the baghouse. This dislodges and releases dust caked onto the filter into the bin or hopper at the unit’s base. The controller is programmed for proper cleaning depending on the amount of dust generated in the system. ## **System Design That Optimizes Biomass Dust Collection and/or Other Pollutants**  [Dust collection equipment for the biomass industry](https://www.slyinc.com/products/dust-collectors/) and applications could involve a single system, such as a baghouse or cyclone. Depending on the emissions, dust collection might apply a wet scrubber to capture hazardous gases alongside a baghouse. At the same time, other operations might require a cyclone at the start of the cycle with a baghouse in line afterward. Yet others might need a loading spout to minimize fugitive dusting when loading the material in the truck or rail car for transportation. In contrast, others might require a complete package to handle the emissions and protect the workforce adequately. Sly LLC has designed and modified dust collection systems for diverse biomass substances in various locations. We supply customized solutions that help overcome challenges related to this dynamic industry. [Read our white paper](https://info.slyinc.com/biomass-wp) to find out more about our biomass industry experience or give us a call. Author: Al Moretti, Dry Segment Sales Manager Al has been with Sly for over 2 years and in the dust collection industry for over 25 years. [Contact Us](https://www.slyinc.com/contact/) [Biomass](https://www.slyinc.com/blog/category/biomass/), [Dust Collection System](https://www.slyinc.com/blog/category/dust-collection-system/), [Dust Collector](https://www.slyinc.com/blog/category/dust-collector/) **Categories:** Biomass, Dust Collection System, Dust Collector --- ### [Top Tips for Optimizing Dust Management for Lithium Processors](https://www.slyinc.com/blog/top-tips-for-optimizing-dust-management-for-lithium-processors/) **Published:** June 6, 2023 **Author:** p1ws **Content:** Lithium is the lightest metal on the periodic table. However, some general characteristics remain. The properties of lithium dust can vary depending on its source, form, and processing conditions. The challenges of lithium dust require careful design and planning to build a proficient system to control it. Best practices will analyze lithium dust characteristics and customize a dust management approach to optimize its safe capture. ## Lithium Dust Characteristics  Lithium is either mined from either hard rock or brined from salt deserts. Groundwater brine supplies approximately half of the world’s lithium. Lithium-ion batteries account for much of the lithium mined and processed. However, lithium and its compounds serve other industrial functions, within lubricants, as flux additives and within glass and ceramic formation. Lithium processing yields dust from its mining through grinding and milling, with this dust exhibiting typical characteristics such as: **Fine particle size**: Particles can measure less than 5 microns, making capturing challenging. **Reactivity**: Lithium is a highly reactive metal. This characteristic makes it a valuable component of batteries, but also reactive within the processing environment and sensitive to exposure to water, air and other chemicals. **Flammability**: The dust from lithium processing can ignite spontaneously in the presence of air or moisture. **Poor flow characteristics**: This property makes lithium dust more likely to cling to surfaces or equipment. **Health hazards**: Lithium dust, if inhaled or ingested, can cause various health issues, including skin and eye irritation or respiratory ailments. **Corrosivity**: Lithium dust can be corrosive to certain metals. Careful consideration of equipment and materials selection for dust capture can help mitigate this characteristic. ![lithium 1](https://www.slyinc.com/wp-content/uploads/2024/08/lithium-1-3.jpeg) Given these properties, it is crucial to implement appropriate dust management and limit exposure to lithium dust in industrial settings. These measures include selecting the proper dust collection equipment, personal protective gear, ventilation systems, combustion prevention measures, and an effective and comprehensive maintenance plan. ## Top Tips for Configuring an Appropriate Lithium Dust Collection System  The type of dust collection equipment matched to the processing system depends on several variables, including the lithium production stage. More than likely, a dust collection effort will incorporate a baghouse. It might require a cyclone, wet scrubber, or loading spout. Two of the most essential considerations are appropriately sizing the baghouse and its inlet design.  Inlet loading (in grains per dry standard cubic foot) will dictate the air to cloth ratio and guide one to either incorporate a traditional hopper inlet or a high side inlet. Hopper inlets are used when capturing nuisance dust from transfer points, screeners or filling operations, while a high side inlet may be more appropriate when handling heavy dust loading experienced during process operations and milling. Which design is best suited for the application will be determined by our engineering team, based upon accumulated knowledge from decades of successful installations. Another important characteristic of many types of dust is combustibility. And given the explosive nature and reactivity of lithium dust, appropriate [explosion protection expertise](https://www.slyinc.com/products/dust-collectors/explosion-protection-expertise/) should be employed. More comprehensive information about the dust collection options is available in the white paper on lithium processing. However, specific design considerations or tips design engineers use to configure a system to help overcome challenges posed by lithium dust management can include: ### Adjusting The Slope in The Baghouse Hopper.   As stated above, lithium has very poor flow characteristics, which causes it to stick to surfaces. Environmental factors such as humidity and even altitude can impact dust properties. Some methods towards managing dust with poor flow include increasing the slope of the hopper, adding vibrators or a compressed air fluidization system. All of which will encourage movement of bulk material. Another challenge is dust sticking together will accumulate or “bridge” across a discharge outlet. In the case of combustible dust, bridging poses a significant risk factor. Designers can calculate an effective angle of repose to facilitate the dust’s flow. This computed value helps determine the hopper’s slope or optimal steepness. ### Selecting The Proper Filter Media.   Numerous baghouse filter options are available as well as engineered fabrics specific for challenging applications.  Whether handling elevated temperatures or gas streams having moisture, acids, solvents or other agents, there are many options available. The fabric or media choice helps determine whether a baghouse will operate at maximum effectiveness and efficiency. Design engineers can recommend the best combination of fiber types and filters to aid with dust capture and, equally important, dust cake release. For example, an ePTFE membrane helps capture tiny particles from the airstream, which could assist operations interested in recycling captured lithium dust into the production stream. This membrane also improves the cake release of sticky dust. Other factors influencing media selection include dust shape (spherical or regular) and micron size. Sly offers many [baghouse filter mediums](https://www.slyinc.com/products/fabric-filter-media-options/) to release particles with the finest grain or stickiest properties. ### Recalculate Inlet Location and Placement.   The fine nature of the lithium dust, its weight and size help determine the inlet placement on the baghouse. Lithium dust has a density of approximately 25 lbs. per cubic foot. Lighter materials such as this might benefit from a higher inlet placement. Often the OEM equipment dictates the placement of the inlet to match the outlet and outflow from a dryer, for example. ## Customization is The Key to Meeting Unique Specifications   This points out the value of working with a company that can customize the build of its dust collection equipment. In-house manufacturing is the key. When a company controls its fabrication process instead of outsourcing, it controls the design and manufacturing process. This supplies the customer with uniquely designed and tailored equipment to suit application specifications. Another benefit of customized manufacturing is that the equipment can be designed to fit within the allotted square footage or plant footprint. It also makes fitting the components into shipping containers easier for overseas installation. Sly works with companies around the globe and can implement design procedures that optimize system efficiency while reducing the size of a baghouse, for example, to accommodate shipping size constraints. Lithium dust exhibits behaviors unlike any other substance. It requires an experienced team of engineers and a dedicated manufacturer to create an efficient system that performs safely and is up to specifications. In addition, lithium dust collection projects share two factors in common—each is unique, and each requires strict confidentiality for OEMs to maintain the secrecy of proprietary processing methods. Sly Inc. offers over 20 years of experience designing and building dust management systems for lithium processing. Sly keeps its manufacturing in-house, allowing for customization in design and fabrication to meet customer needs. Lithium processing companies can achieve processing goals, maintain plant safety and trust in complete confidentiality with the team at Sly. Call us today or download our white paper on [“Lithium Dust Collection: When Every Mote Counts.”](https://info.slyinc.com/lithium-wp?_gl=1%2Aq0bpom%2A_ga%2AMjU5ODIyODA1LjE2NzI5MjY0MzA.%2A_ga_0G2M9CMRL1%2AMTY4MjM2NTA1OC4yOS4wLjE2ODIzNjUwNTguMC4wLjA.) Author: Dave Mosinski, Regional Sales Manager Dave has been in the dust collection industry and with Sly for over 26 years. [Contact Us](https://www.slyinc.com/contact/) [Dust Collection System](https://www.slyinc.com/blog/category/dust-collection-system/), [Dust Collector](https://www.slyinc.com/blog/category/dust-collector/), [Lithium](https://www.slyinc.com/blog/category/lithium/) **Categories:** Dust Collection System, Dust Collector, Lithium --- ### [FRP Wet Scrubbers: Corrosion Resistance and Longevity for Emissions Control](https://www.slyinc.com/blog/frp-wet-scrubbers-corrosion-resistance-and-longevity-for-emissions-control/) **Published:** February 14, 2024 **Author:** p1ws **Content:** [Wet scrubbers](https://www.slyinc.com/industrial-wet-scrubbers/) can be made from various materials, including metal alloys, stainless steel, thermoplastics, or fiberglass-reinforced plastic (FRP). In this blog, discover the benefits of FRP wet scrubbers for corrosive environments and which industries or applications are best suited to this material. SLY offers several types of wet scrubbers for emissions control. - Learn about the properties of FRP as a material for wet scrubbers - Find out which industry applications are best suited for FRP - Discover how the consultative approach fosters a better, tailored solution The good news is that air quality has improved. According to government reports, the most recent data from 2022 show that in eight out of ten cities in the United States, there were fewer pollutants in the air.1 Air quality improvements date back to 1980 and earlier, with strides towards better air quality linked to the Clean Air Act and amendments made over the years. A wet scrubber is a critical tool that manufacturers and processors rely upon as an air pollution control device. Wet scrubbers help eliminate toxic or hazardous chemical gases and vapors from industrial exhaust streams. A wet scrubber passes the contaminated gas through a liquid solution, usually water, which absorbs or captures the harmful compounds. Removing toxic pollutants makes the emissions safe to release into the atmosphere. As more good news, operators have different choices for a wet scrubber, including material selection from various metal alloys, stainless steel, thermoplastics, or fiberglass reinforced plastic (FRP). Sly, LLC has extensive experience fabricating wet scrubbers to suit myriad industrial environments and from a variety of materials. However, process engineers might not be as familiar with the properties and application potential of FRP compared to other materials, and it is worth a closer look. ![](https://www.slyinc.com/wp-content/uploads/2024/09/Render-PackedTower-FRP.webp "Render-PackedTower-FRP | Sly Air Pollution Control") ## The Advantages of FRP Wet Scrubbers **Corrosion Resistance:** A standout feature of FRP wet scrubbers is this material’s exceptional resistance to corrosion. Industries that rely upon or produce corrosive chemicals can turn to FRP as a cost-effective, longer-lasting alternative to stainless steel. Steel scrubbers will corrode or pit under the destructive power of chlorides and other aggressive agents, while FRP scrubbers can supply greater longevity and durability. **Cost-Effectiveness:** Cost considerations feature prominently in any decision-making or purchasing process. A wet scrubber fabricated from FRP offers significant cost advantages for budget-conscious projects. Fiberglass-reinforced plastic components or systems deliver ongoing cost savings by requiring minimal maintenance and prolonging the time between replacements. This long lifespan and corrosion resistance make [FRP scrubbers](https://www.slyinc.com/frp-wet-scrubbers/) a cost-effective choice and smart financial capital investment. **Low Maintenance:** The shortage of skilled labor impacts every industrial practice, and the maintenance staff is no exception. Due to their impressive durability, FRP scrubbers require less time and resources spent on repairs and maintenance checks. ## Pairing Industry Needs with FRP Wet Scrubbers ### Industries that rely on FRP wet scrubbers include: - Agriculture: FRP scrubbers can be used to control ammonia emissions in the agrochemical industry, often related to fertilizers, removing what are commonly considered nuisance odors.Chemical Processing: FRP is resistant to corrosive chemicals commonly found in chemical plants, ensuring longevity and reliability in emissions control. - Metal Finishing: Metal finishing operations, such as pickling or plating, produce acidic and caustic fumes. FRP wet scrubbers effectively capture harmful compounds generated during metal finishing operations, and their corrosion resistance can supply a prolonged operational life. - Mining: FRP scrubbers effectively capture hazardous gases from hydrochloric acid usage. Its capture must be carefully monitored and ensured. Hydrogen cyanide is also used in producing certain synthetic fibers, plastics, and pesticides. - Pharmaceuticals: While pharmaceutical companies often use thermal incineration for emissions control, FRP wet scrubbers can pose a reliable alternative for efficiently capturing Volatile Organic Compounds (VOCs). - Pulp and Paper Mills: FRP scrubbers are used to control emissions of sulfur compounds and other malodorous gases, like mercaptans. FRP scrubbers can absorb and mitigate nuisance emissions before being released to the surrounding community and offer a cost-effective and long-lasting solution. - Semiconductor Manufacturing: This industry relies on various chemicals, including chlorides and fluorides, with FRP supplying the corrosion resistance properties required for a cost-effective, durable solution. These industries benefit from FRP wet scrubbers due to their corrosion resistance, cost-effectiveness, and longevity. This helps companies reach environmental compliance goals and assists with safe operating conditions. An additional consideration when planning or designing a wet scrubber system is the footprint it will occupy. Pulp and paper mills are typically older facilities that require evaluating and replacing existing scrubbers. In contrast, semiconductor facilities often are new builds. While footprint and space remain essential considerations, the placement and planning for a wet scrubber can be figured into the design and building plans from the start. ## The Question Tree to Evaluate Wet Scrubber Requirements While exact measurements and specifications are required to start a building project, some of the questions asked of a customer by the engineering team at Sly can be summarized as: 1. What is the gas flow rate that needs treatment? 2. What are the temperature and pressure conditions? 3. Which specific contaminants are involved in the processing stream? 4. What capture efficiency or emission reduction target is required? - Based on contaminants: - Is it a gas or particulate? - If particulate, is it liquid or solid? - If solid, is it soluble or insoluble? - If solid, how abrasive is it? These questions can help guide the selection and design of the appropriate wet scrubber system for a given application. ## Consultative Approach At Sly, while the core of any solution is technology, this core is wrapped within a mantle of trust and collaboration. Our consultative approach sets us apart in the industry. We take the time to understand your unique requirements and offer tailored solutions that align with the goals of that facility. With decades of experience and a commitment to excellence, we are more than just a supplier; we are a trusted partner for air pollution control systems for hundreds of companies worldwide. If you want a deeper dive into the function and applications of wet scrubbers, we’ve published a new white paper. Download it here. For information on the complete line of wet scrubbers or specifications on FRP wet scrubbers that Sly can install, visit our product pages here. Or, contact us to discuss your next project. Our engineering staff is happy to discuss your specifications to help configure a system tailored to meet your emissions requirements. 1. https://www.nbcnews.com/data-graphics/air-quality-us-improved-2022-data-shows-rcna76568 [Contact Us](https://www.slyinc.com/contact/) [FRP Scrubbers](https://www.slyinc.com/blog/category/frp-scrubbers/), [Wet Scrubber](https://www.slyinc.com/blog/category/wet-scrubber/) **Categories:** FRP Scrubbers, Wet Scrubber --- ### [How Does a Biomass Dust Collector Work?](https://www.slyinc.com/blog/how-does-a-biomass-dust-collector-work/) **Published:** June 8, 2023 **Author:** p1ws **Content:** Fertilizer for the garden. Dish detergent by the kitchen sink. Electricity to power lights over your workspace. These are a few examples in the vast and growing “bioeconomy,” which some studies say tops US $4 trillion. Moving from a fossil fuel-based to a biobased economy is expected to contribute to climate and environmental protection as well as reduce our dependency on fossil fuels and make our resources more affordable, accessible and sustainable. Biomass materials appear in obvious and subtle ways in everyday products, services, and industries. Their uses are as diverse as the sources for biomass, with types and varieties ranging from wood chips and sawdust to agricultural or municipal waste and even algae. Biomass sometimes requires conversion to realize its useful purpose. It is the conversion process that creates dust and other compounds. Biomass dust collection is designed to capture and remove airborne particles generated during processing, handling or storage. The challenge is determining the right equipment and modifications to maintain efficiency and safety standards. This is not very easy due to the wide variety of source materials for biomass. ![biomass](https://www.slyinc.com/wp-content/uploads/2024/08/biomass-4.jpg) ## **Types of Dust Collection Equipment Used in Biomass**   Dust collection equipment might include a baghouse, wet scrubber, cyclone or loading spout, depending on the type of dust that requires collecting, other constituents present, and the type of processing. For example, in a wood-fired application designed to generate electricity, a cyclone might remove the embers before entering a baghouse (embers entering a baghouse can set the bags on fire). A biogas processing facility might use a baghouse and a wet scrubber for odor control or acid gas removal. In this case, the material selected for the wet scrubber must meet the gas challenges. If it contains many acids, for example, that eliminates carbon steel, the choices are stainless steel or fiberglass. Some installations require two baghouses, one for the dryer and one for the boiler. Depending on the particulate loading, particulate characteristics and required removal efficiency, a venturi and scrubber combo may be the solution. When loading the resulting dry product into tank cars, open trucks, ships, or other forms of transportation, a loading spout can help mitigate the dust clouds produced during the loading process for removal or shipping. The loading spout is attached to the bottom of a silo or conveying system. Spouts are designed for open trucks or piles, tanker loading or combined loading spouts. Each situation is unique. A baghouse is one of the most common types of biomass dust capture equipment. The baghouse filters out and collects the dust particles from the airstream using various filtration media. As the dust-laden air passes through the filter media, the dust particles are trapped and accumulate on the filter surface, while clean air is discharged into the atmosphere, commonly through the exhaust fan. The type of filter used depends on the nature and size of the dust particles, the particulate loading, temperature, and the volume of air to be filtered. A baghouse can be a key part of the process. For example, a baghouse can be used as a filter receiver which is a high vacuum device used in pneumatic material transfer as a collection device to separate the material from the pneumatic air. These special baghouses can handle higher pressures. For nuisance dust collection, depending on the particulates value and amount, a baghouse will either capture the nuisance dust for disposal or recycle the product back into the production stream. Dust collection systems can also capture particles at transfer points such as conveyors. Overall, baghouse systems are versatile and efficient. ## **Special Considerations for Dust Capture During Biomass Processing**  Special considerations that can impact the equipment selection, modifications, or the filter media can include: **Combustion characteristics**: Many types of biomass are highly combustible and can pose an explosion hazard if ignited. Design engineers familiar with combustible materials can incorporate explosion mitigation features into the dust collection system to help prevent or contain any incidents. This can include explosion panels, spark detection apparatus, explosion isolation valves, grounding and more. Of course, proper maintenance and industrial housekeeping practices are a must. **Dust’s Abrasive nature:** Some biomass ash types can be highly abrasive. This abrasiveness can cause significant wear and tear on the dust collection equipment. Proper material selection can help create a more durable system able to withstand the dust’s abrasive nature. **Moisture content**: Biomass materials can vary in their moisture content. Moisture can build up in ductwork and filters in a baghouse, leading to clogging and reduced performance efficiencies. Animal manure is one example of biomass that can have a high moisture level if not properly dried. The moisture percentage is one critical factor when designing a dust collection system, especially if the moisture will not be in vapor form. **Amount of ash:** When combusting biomass material, certain types of biomass can produce more ash than others. Wood and palm fronds fall into this category. The projected or known ash level contributes to the dust collector’s load factor. **Bulk density:** Bulk density is one factor that contributes to dust collector sizing. The lighter the material, the less likely it is to fall into the hopper. Design engineers must select the correct interstitial velocity, so the ash falls into the hopper properly, or change how dust enters the collector. **Condensed gases:** Some biomass processes might produce an acid in the gas stream. In vapor form, the gas passes through the bags. However, if it condenses and forms a liquid, the materials can cause corrosion or damage to the bags. The temperature must be maintained over the dewpoint to keep the acid in gas form to control this. In addition, condensable gases impact the material selected for the bags and cages. For high-acid environments, material selection will tend toward stainless steel, fiberglass, or Hastelloy, especially if a wet scrubber is used since the gas will cool below the dewpoint and form liquid acid. **Temperature and odor control*:*** Venturi wet scrubber combinations are typically used in high-temperature processing to cool down the gas stream (via quench). A venturi scrubber quenches the gas to bring it down to saturation temperature. It also captures particulates or corrosive gases. For example, it can take ammonia out of a gas stream, a function the baghouse cannot perform. An additional function wet scrubbers perform is odor control. Caustic chemicals or sodium hypochlorite can be added to the scrubber to significantly, if not wholly, eliminate the odor, depending on the source. Chicken manure is an example of biomass being converted to a saleable product yet has a strong odor. No company in the industry has a more extensive history of designing and building dust mitigation equipment and systems than Sly LLC. With its broad range of variables, choose to work with a company that understands the biomass industry’s unique challenges and requirements regarding effective dust management. Read more about our experience with biomass companies in our [white paper](https://info.slyinc.com/biomass-wp) or select [case studies](https://www.slyinc.com/resources/case-studies/) detailing Sly’s approach and solutions. Trust Sly LLC to fabricate a biomass dust collection system that improves air quality, maintains plant safety, and delivers cost-effective, durable performance. Author: Al Moretti, Dry Segment Sales Manager Al has been with Sly for over 2 years and in the dust collection industry for over 25 years. [Contact Us](https://www.slyinc.com/contact/) [Biomass](https://www.slyinc.com/blog/category/biomass/), [Dust Collector](https://www.slyinc.com/blog/category/dust-collector/), [Dust Collector System](https://www.slyinc.com/blog/category/dust-collector-system/) **Categories:** Biomass, Dust Collector, Dust Collector System --- ### [Clearing the Air: How FRP Scrubbers Keep Chemical Plants Safe from Hazardous Gases](https://www.slyinc.com/blog/clearing-the-air-how-frp-scrubbers-keep-chemical-plants-safe-from-hazardous-gases/) **Published:** February 20, 2024 **Author:** p1ws **Content:** The manufacturing of chemicals is a double-edged sword. While it’s essential for producing a wide array of products that benefit society, it also generates hazardous gases that pose significant risks to human health and the environment. In [chemical processing plants](https://www.slyinc.com/industries/chemicals/), where exposure to substances like chlorine, ammonia, and sulfuric acid is part of daily operations, mitigating these risks is not just regulatory—it’s a moral imperative. Enter [fiberglass-reinforced plastic (FRP) scrubbers](https://www.slyinc.com/frp-wet-scrubbers/), the unsung heroes that serve as the first line of defense in maintaining air quality and ensuring safety. ![](https://www.slyinc.com/wp-content/uploads/2024/09/AdobeStock_367250526-1024x683.webp "AdobeStock_367250526 | Sly Air Pollution Control") ## FRP Scrubbers: Engineering for a Cleaner Tomorrow FRP scrubbers are not just pieces of equipment; they are complex systems engineered to contain and neutralize dangerous contaminants before they can cause harm. Their design leverages the innate properties of FRP—a material known for its resistance to a plethora of chemicals, its ability to withstand various temperature ranges without degradation, and its UV resilience. ### How FRP Scrubbers Operate At their core, FRP scrubbers are designed around the principles of gas absorption and neutralization: 1. **Contaminated Gas Entry:** Exhaust streams laden with gas pollutants enter the scrubber. 2. **Chemical Interaction:** Inside the scrubber, these gases come into contact with a specifically formulated scrubbing liquid. 3. **Neutralization:** The liquid absorbs the hazardous gases and initiates a chemical reaction that neutralizes them. 4. **Clean Release:** After this process, what remains is an innocuous gas stream released into the atmosphere—stripped of harmful chemicals—and a contaminated liquid that is subsequently treated. ### Customizing for Compliance and Efficiency One size does not fit all in industrial applications—and this holds true for FRP scrubbers. Customization is crucial to address varying industrial needs effectively. Factors such as gas types present in the exhaust stream, their concentration levels, temperature conditions, pressure requirements, and desired capture efficiency all play into tailoring an FRP scrubber system that fits like a glove. Sly LLC’s expertise lies in creating solutions that are not merely compliant with environmental standards but also optimized for performance—ensuring that plants can operate safely without compromising productivity or safety. ## Benefits of Using FRP in Scrubber Systems ### **FRP brings several advantages to the table when used in scrubber systems:** - **Corrosion Resistance:** Its nonreactive nature means long-term operation is guaranteed without succumbing to corrosive wear—a common pitfall in chemical processing environments. - **Cost-Effectiveness:** Compared to high-grade steel alloys required for similar conditions, FRP is more economical while still providing robust performance against corrosive agents. - **Impressive Capture Efficiency:** FRP scrubbers boast high capture rates for both particulate matter and gaseous pollutants—making them effective guardians against contamination. - **Minimal Upkeep:** The inherent properties of FRP ensure low maintenance efforts; it does not rust or need repainting, and its surface resists contaminant buildup. If you want a deeper dive into the function and applications of wet scrubbers,[ we’ve published a new white paper.](https://www.slyinc.com/resources/white-papers/pollution-protection-powerhouse-fiberglass-reinforced-plastic-wet-scrubbers-optimize-performance/) ## Recognizing Limitations to Forge Better Solutions Despite their numerous advantages, FRP scrubbers do have limitations: - **Temperature Sensitivity:** Standard setups handle up to 220°F—beyond which additional measures may be necessary. - **Pressure Constraints:** They typically support up to 1 psig or 27.7 inches of water pressure or vacuum—with modifications required for higher pressures. - **Erosion Risks:** When faced with abrasive particles within exhaust streams, erosion could necessitate specialized design considerations. In addressing these limitations upfront through careful design choices and adaptations, Sly ensures that each FRP scrubber system meets the unique challenges posed by different chemical processing scenarios. ## Ensuring Safety Through Innovation The evolution of chemical processing demands continual innovation in air pollution control methods. Our goal at Sly is to engineer designs and technologies—like FRP scrubbers—to safeguard the environment and the public from industrial hazards. These systems represent more than just engineering triumphs; they embody our commitment to responsible manufacturing practices that honor both human life and environmental stewardship. Knowing such advanced protection offers peace of mind for those who operate within the realms where hazardous gases loom as unseen threats. And so, as we continue forging ahead in our industrial endeavors, we lean on the silent strength of FRP scrubbers. Trust Sly LLC to fabricate a dust collection system that improves air quality, maintains plant safety, and delivers cost-effective, durable performance. [Contact Us](https://www.slyinc.com/contact/) [FRP Scrubbers](https://www.slyinc.com/blog/category/frp-scrubbers/), [Industrial Dust Collector](https://www.slyinc.com/blog/category/industrial-dust-collector/) **Categories:** FRP Scrubbers, Industrial Dust Collector --- ### [Custom Approach Optimizes Fly Ash Dust Capture](https://www.slyinc.com/blog/custom-approach-optimizes-fly-ash-dust-capture/) **Published:** July 24, 2023 **Author:** p1ws **Content:** A new rule regarding coal ash disposal and cleanup issued by the Environmental Protection Agency (EPA) could be enacted in May 2024. The current proposal is designed to modify a 2015 rule, “Disposal of CCR from Electric Utilities,” or the Coal Ash Rule, addressing the management of fly ash and other coal combustion residuals. The revision comes in response to a suit brought to court by various public interest groups concerned over coal ash pollution, the toxic chemicals it contains and related environmental and health hazards. The revised rule extends federal coal ash regulations to monitor, close and clean up older ponds, landfills and dump sites excluded in the original 2015 ruling. The EPA estimates there are approximately 500 unlined coal ash ponds in the U.S. and even more landfills within 40 states at hundreds of coal plants. Equipment and systems exist to help utilities responsible for compliance with this ruling—systems that can help offset some of the investment necessary for this cleanup by monetizing the fly ash recovered from these efforts. Dust collection systems significantly affect this viable commodity’s fly ash conversion and recovery. ![fly ash](https://www.slyinc.com/wp-content/uploads/2024/10/fly-ash-industry-thumb.jpg "fly-ash-industry-thumb | Sly Air Pollution Control") ### Fly Ash Types and Collection Fly ash consists of two primary types. The first is class F, a fine substance often captured by electrostatic precipitators or baghouses. The second type is bottom ash or class C, which is larger and settles at the bottom of the boiler. Coal power plants generate substantial amounts of fly ash. The fly ash is fed through a ball mill and then into a rotary calciner, which employs high heat to dry the fly ash and remove impurities. The calciner generates heat of approximately 2000 F to aid the combustion or volatilization of organic compounds and heavy metals such as mercury, arsenic or manganese. The rotary calciner dries the fly ash dredged from ponds or landfills. This process helps improve the fly ash’s quality and characteristics, making it more suitable for cement production or as a component for construction materials. Dust collection systems help contain and capture fly ash in this drying process. ### Unique Particle Size Distribution and Fluidized Behavior Fly ash exhibits a unique particle size distribution, with the class F particles ranging from 2 to 10 microns and bottom ash particles fitting within a micron range of 70 to 100. The microscopic size of type F particulates, mixed with air, causes these particles to exhibit fluid characteristics similar to the motion or behavior of water. In addition, fly ash dust is exceptionally abrasive due to the silicon dioxide and aluminum dioxide it contains. These flow characteristics pose challenges for dust collection. ### Special Considerations for Dust Collection of Fly Ash Dust collectors for fly ash require special features to handle its abrasive nature and fluidized tendencies. Any initial contact points, such as airlocks or augers, must be made of abrasive-resistant steel to withstand harsh conditions. Hard chrome plating or double dump valves often prevent rapid wear in highly abrasive applications, such as fly ash dust collection. A double dump valve can significantly extend equipment lifespan compared to a more common rotary valve, which suffers constant grinding from abrasive material. Additionally, a cyclone can serve as a pre-filter to reduce the dust load on the main baghouse. ### High Dust Loading and Temperature Management The dust collectors designed for fly ash purification face high dust loading due to the large percentage of particulate matter being captured. Approximately 90-95% of the product processed in the rotary calciner passes into the dust collector. Its lightweight and fluidized behavior causes the dust to be drawn into the baghouse instead of dropping out of the bottom into a container. These collectors need to handle several hundred grains of material per cubic foot of air. In addition, calciners subject the fly ash to extremely high temperatures during drying. This air needs to be cooled to facilitate the proper operation of the baghouse. While a dust collector or baghouse could potentially handle a maximum temperature of up to 500° F, the optimal temperature maximum for a dust collection is 350° F to avoid using exotic materials for the filter media and gaskets. The filter media required for higher temperatures, above 450° F, would include Teflon® (PTFE) or P84, while gaskets might need to be made of Viton®. These exotic materials can become cost-prohibitive when there are means to lower the temperature, enabling the use of more common materials for filter media and gaskets. The most common method employed is to design a system that pulls in ambient air to bring the temperature down to 350 F. The ambient air required to lower the temperature helps determine the baghouse size, whether 30,000 CFM or 45,000 CFM, for example. We incorporate a unique high inlet design in the dust collectors to efficiently handle the high dust loading. This design ensures that most particulate matter drops directly into the hopper while only the finest particles collect on the outer surface of the filter bags. This approach protects the filter media from excessive wear and allows for the effective collection and recovery of fly ash. Recovered fly ash is a sustainable alternative to virgin materials, promoting greater environmental responsibility and optimizing the efficient use of resources. Dust collection plays a crucial role in the purification of fly ash, enabling the extraction of impurities and the recovery of valuable material. The unique characteristics of fly ash, including its particle size distribution and fluidized behavior, necessitate a custom approach to the design of dust collector equipment. With effective dust collection methods, fly ash can be transformed into a valuable resource, contributing to more sustainable practices in various industries. Sly LLC has the expertise and onshore facilities to fabricate baghouses that incorporate special features to accommodate the abrasive nature, high loading and fluidized nature of [fly ash dust](https://www.slyinc.com/industries/fly-ash/). Call Sly today to develop a fly ash recovery program before the new EPA ruling occurs. [Contact Us](https://www.slyinc.com/contact/) [Dust Collection System](https://www.slyinc.com/blog/category/dust-collection-system/), [Dust Collector](https://www.slyinc.com/blog/category/dust-collector/) **Categories:** Dust Collection System, Dust Collector --- ### [Safeguarding Semiconductor Manufacturing with FRP Scrubbers](https://www.slyinc.com/blog/safeguarding-semiconductor-manufacturing-with-frp-scrubbers/) **Published:** February 27, 2024 **Author:** p1ws **Content:** ## A Closer Look at Controlling Corrosive Gases and VOCs As the semiconductor industry propels us into an era of advanced smartphones and artificial intelligence, it simultaneously presents a unique set of safety and environmental challenges. The manufacturing processes inherent to this sector make extensive use of corrosive chemicals and volatile organic compounds (VOCs), necessitating robust control measures. In this critical arena, [fiberglass-reinforced plastic (FRP) scrubbers ](https://www.slyinc.com/frp-wet-scrubbers/)emerge as the stalwart defenders against these hazardous pollutants. ![](https://www.slyinc.com/wp-content/uploads/2024/09/AdobeStock_571276378-1024x683.webp "AdobeStock_571276378 | Sly Air Pollution Control") ## The Role of FRP Scrubbers in Semiconductor Fabrication Semiconductor fabrication is a complex dance of chemistry and physics, where purity is paramount, and even the slightest contamination can spell disaster for the delicate electronic components being produced. To manage this high-stakes environment, original equipment manufacturer (OEM) FRP scrubbers play a pivotal role. ### Understanding OEM FRP Scrubbers When we speak of OEM FRP scrubber systems within the industry, we refer to custom-designed solutions tailored to meet the specific needs of semiconductor manufacturing facilities. These systems are crafted from fiberglass-reinforced plastic—a material lauded for its resilience against a spectrum of chemical agents. ### The Advantages of FRP Technology **Corrosion Resistance** With its nonreactive nature, FRP is an ideal candidate for enduring various chemicals without deterioration. This resilience ensures that operations can continue for extended periods without the frequent replacement cycles often associated with less robust materials. **Cost-Effectiveness** Comparatively speaking, FRP solutions present a more economical alternative to high-grade steel alloys typically required in similar corrosive environments. This affordability does not come at the expense of quality or reliability. **Capture Efficiency** Through advanced design, OEM FRP scrubbers achieve impressive capture efficiencies for both gaseous and particulate contaminants—ensuring that harmful substances are effectively removed from exhaust streams before they ever have a chance to reach the open atmosphere. **Low Maintenance Demands** Known for its low maintenance requisites, FRP does not rust or necessitate painting. Its smooth surface naturally repels contaminant buildup, simplifying cleaning routines and reducing overall upkeep costs. ### Limitations Within the FRP Framework Despite their many benefits, FRP scrubbers do have certain intrinsic limitations: - **Gas Temperature:** Typically designed to handle inlet gas temperatures up to 220°F, these systems may require additional modifications, such as upstream evaporative quenches, to manage higher temperatures. - **Gas Pressure:** Standard designs accommodate pressures up to 1 psig or 27.7 inches of water column. However, specialized designs can extend this range substantially when required. - **Erosion Risks:** When faced with abrasive particles within gas streams, erosion can become a concern—potentially accelerating degradation if not properly addressed. [If you want a deeper dive into the function and applications of wet scrubbers, we’ve published a new white paper.](https://www.slyinc.com/resources/white-papers/pollution-protection-powerhouse-fiberglass-reinforced-plastic-wet-scrubbers-optimize-performance/) ## Controlling Harmful Emissions in Semiconductor Manufacturing The semiconductor industry’s reliance on diverse corrosive chemicals and VOCs makes emission control a regulatory mandate and a corporate responsibility toward environmental sustainability. Here’s how OEM FRP scrubbers serve as an indispensable tool in this regard: ### Neutralizing Hazardous Components By absorbing and neutralizing hazardous chemicals through gas absorption techniques, FRP scrubbers protect workplace environments and external ecosystems from potential risks. ### Customizable Solutions Every semiconductor facility has its unique challenges based on the specific processes involved. Customizable materials used in creating OEM FRP scrubbers ensure that each system is precisely tuned to address these individual needs effectively. ## Securing the Future of Semiconductor Innovation with Advanced FRP Emission Control As semiconductor manufacturing continues its accelerated pace towards smaller components and larger data demands, the role played by OEM FRP scrubbers is becoming all the more critical. Through their ability to effectively contain and neutralize hazardous emissions, these systems represent an essential component in ensuring that our commitment to sustainability and safety matches our technological advancements. [Contact Us](https://www.slyinc.com/contact/) [FRP Scrubbers](https://www.slyinc.com/blog/category/frp-scrubbers/), [Industrial Dust Collector](https://www.slyinc.com/blog/category/industrial-dust-collector/) **Categories:** FRP Scrubbers, Industrial Dust Collector --- ### [Advancing Environmental Compliance in Metal Finishing Operations with Tailored FRP Scrubbers](https://www.slyinc.com/blog/advancing-environmental-compliance-in-metal-finishing-operations-with-tailored-frp-scrubbers/) **Published:** March 5, 2024 **Author:** p1ws **Content:** The [metal finishing industry](https://www.slyinc.com/industries/metalworking/) is often at the intersection of innovation and environmental regulations. From electroplating to anodizing, these operations release heavy metal particles and acid mists into the environment, which can have significant health and environmental impacts. However, technological advancements like fiber-reinforced plastic (FRP) scrubbers are helping the industry elevate its environmental compliance. ![](https://www.slyinc.com/wp-content/uploads/2024/09/AdobeStock_482337460-1024x683.webp "AdobeStock_482337460 | Sly Air Pollution Control") ## Understanding Metal Finishing Metal finishing is a broad term encompassing various processes designed to alter the surface of a manufactured item. Processes, including electroplating, anodizing, or galvanizing, all involve treating the metal’s surface with different chemicals to enhance its appearance, durability, or resistance to corrosion. However, these procedures can also generate harmful emissions, including heavy metals and acid mists. These pollutants pose significant health risks to workers and can cause severe damage to the environment if not properly managed. FRP scrubbers are a solution for mitigating these pollutants. ## The Role of FRP Scrubbers [FRP scrubbers ](https://www.slyinc.com/frp-wet-scrubbers/)capture and neutralize hazardous components from industrial exhaust gases before releasing them into the atmosphere. These scrubbers are constructed using highly customizable materials that ensure resistance against a wide range of chemicals while maintaining temperature stability and UV resistance. ## Advantages of FRP Scrubbers FRP scrubbers offer several benefits that make them an attractive choice for industrial operations, particularly those involving corrosive chemicals. - **Corrosion Resistance:** The non-reactive nature of FRP makes it ideal for handling various chemicals without deteriorating over time. - **Cost-Effectiveness:** FRP is generally less costly compared to high-grade steel alloys typically used in corrosive environments. - **Design Flexibility:** FRP can be molded into complex shapes and sizes, allowing for custom scrubber designs. - **Capture Efficiency:** FRP scrubbers can achieve high capture efficiencies for both gaseous and particulate contaminants. - **Low Maintenance:** FRP is known for its low maintenance requirements. It does not rust or require painting, and its smooth surface resists the buildup of contaminants. While FRP scrubbers certainly hold the key to mitigating environmental impacts in metal finishing operations, like any technology, they also have some limitations that should be considered. ## Limitations of FRP Scrubbers Although FRP scrubbers are a robust solution for many industrial applications, they do face certain constraints: - **Gas Temperature:** The application of FRP scrubbers is generally limited to an inlet gas temperature of 220°F. However, upstream close-coupled evaporative quenches can be added to accommodate higher temperatures. - **Gas Pressure:** These scrubbers are typically designed for 1 psig or 27.7 inches of water pressure or vacuum. While design considerations can expand these conditions from full vacuum to 15 psig, this is generally the upper limit. - **Erosion:** Abrasive particulates may cause erosion and accelerated degradation in FRP scrubbers. Despite these limitations, FRP scrubbers remain a viable solution for many applications due to their corrosion resistance, cost-effectiveness, and high capture efficiency. Working with experienced providers like Sly, who can tailor solutions to your specific needs and operational constraints, is essential. For a deeper dive into the function and applications of wet scrubbers, [check out this white paper.](https://www.slyinc.com/resources/white-papers/pollution-protection-powerhouse-fiberglass-reinforced-plastic-wet-scrubbers-optimize-performance/) ## Tailoring FRP Scrubbers to Metal Finishing Operations Given the diversity within metal finishing operations, a one-size-fits-all approach to pollution control is often insufficient. Different processes release pollutants, which may require unique, effective capture and neutralization methods. This is where Sly’s expertise comes into play. Our engineers specialize in customizing industrial dust collectors and wet scrubber systems to suit specific needs. We design and manufacture our dust collectors and scrubbers in-house, allowing us the flexibility to tailor solutions that meet the unique requirements of each metal finishing operation. ## Aligning with Environmental Regulations As environmental regulations continue to tighten, industries across the globe are being challenged to reduce their environmental footprint. The metal finishing industry is no exception. By investing in tailored FRP scrubbers, metal finishing operations can meet current regulatory requirements and future-proof their businesses against potential new regulations. ## Make Your Metal Finishing Operation Environmentally Compliant Advancements in technology like FRP scrubbers are crucial in helping the metal finishing industry elevate its environmental compliance. By capturing and neutralizing harmful emissions, these systems protect workers and the broader environment from exposure to harmful pollutants. With the flexibility to tailor these systems to specific operations, Sly offers a comprehensive solution for environmental compliance within the metal finishing industry. [Contact Us](https://www.slyinc.com/contact/) [FRP Scrubbers](https://www.slyinc.com/blog/category/frp-scrubbers/) **Categories:** FRP Scrubbers --- ### [Enhancing Environmental Sustainability in Pulp and Paper Mills with FRP Scrubbers](https://www.slyinc.com/blog/enhancing-environmental-sustainability-in-pulp-and-paper-mills-with-frp-scrubbers/) **Published:** March 12, 2024 **Author:** p1ws **Content:** The[ pulp and paper](https://www.slyinc.com/industries/) industry is vital in the global economy, providing essential materials for countless products. However, the industry also generates significant environmental impacts due to releasing malodorous gases such as hydrogen sulfide and mercaptans. To mitigate these effects and enhance sustainability, industries increasingly turn to innovative solutions like fiber-reinforced plastic (FRP) scrubbers. FRP scrubbers contribute to a cleaner and more sustainable industrial landscape within pulp and paper manufacturing ![](https://www.slyinc.com/wp-content/uploads/2024/09/AdobeStock_402027795-1024x702.webp "AdobeStock_402027795 | Sly Air Pollution Control") ## The Environmental Challenge in Pulp and Paper Manufacturing Manufacturing pulp and paper involves various chemical processes that produce pollutants such as gaseous emissions (e.g., hydrogen sulfide, methyl mercaptan, sulfur oxides), particulate matter, and volatile organic compounds (VOCs). These pollutants pose serious health risks to workers and contribute to environmental degradation. Therefore, effective pollution control measures are crucial for worker safety and environmental sustainability. In addition to these health and environmental concerns, industries also face regulatory pressures. Strict air quality regulations demand that pulp and paper mills maintain emission levels within specified limits – a task easier said than done considering the diversity of pollutants generated in these industries. ## Enter FRP Scrubbers: A Solution for Emission Control Against this backdrop of complex challenges, FRP scrubbers have emerged as an effective solution for mitigating the environmental impact of pulp and paper mills. Scrubbers made from fiberglass-reinforced plastic offer a cost-effective and reliable means to capture hazardous contaminants before they are released into the atmosphere. Here’s how FRP scrubbers work: They utilize customizable materials to resist many chemicals while ensuring temperature stability and UV resistance. When harmful gases pass through these scrubbers, they are absorbed and neutralized, thereby preventing the corrosion of equipment and protecting workers and the environment from harmful exposure. ## The Benefits of FRP Scrubbers FRP scrubbers offer several advantages that make them an optimal solution for emission control in pulp and paper mills: - Corrosion Resistance: FRP’s nonreactive nature makes it ideal for handling various chemicals without deteriorating. This ensures long-term operation without the need for frequent replacements. - Cost-Effectiveness: FRP is typically less costly than high-grade steel alloys required in similar corrosive environments. - Design Flexibility: The molding capability of FRP allows for custom scrubber designs that can handle various gas streams with different contaminants. - Capture Efficiency: FRP scrubbers can achieve high capture efficiencies for both gaseous and particulate contaminants, making them extremely effective in pollution control. - Low Maintenance: Known for its low maintenance requirements, FRP does not rust or require painting, and its smooth surface resists the buildup of contaminants. ## Realizing the Full Potential of FRP Scrubbers While FRP scrubbers offer significant benefits, realizing their full potential requires addressing some limitations. For instance, these scrubbers are generally limited to an inlet gas temperature of 220°F. However, upstream close-coupled evaporative quenches can be added to accommodate higher temperatures. Similarly, although FRP scrubbers are generally limited to 1 psig pressure or vacuum, design considerations can help accommodate pressure conditions from full vacuum to 15 psig. For a deeper dive into the function and applications of wet scrubbers, [check out this white paper.](https://www.slyinc.com/resources/white-papers/pollution-protection-powerhouse-fiberglass-reinforced-plastic-wet-scrubbers-optimize-performance/) ## Enhancing Sustainability with Sly’s Expertise With its extensive experience in air pollution control systems and commitment to environmental sustainability, Sly stands ready to assist industries in implementing effective emission control measures. Our team of expert engineers can customize [industrial dust collectors ](https://www.slyinc.com/dust-collectors/)or [wet scrubber systems](https://www.slyinc.com/industrial-wet-scrubbers/), including FRP scrubbers, to meet your specific needs. We understand that each industry has its unique challenges and requirements. That’s why we offer detailed proposals, engineering drawings, and 3D models, along with custom design and fabrication, to ensure a perfect fit for your operations. With nearly 150 years of experience in the field, we have honed our manufacturing capabilities to deliver reliable solutions that minimize environmental impact while maximizing operational efficiency. Our FRP scrubbers are designed to withstand aggressive chemicals at all humidity levels, ensuring long-term reliability and performance. ## Charting a Sustainable Future with Sly FRP scrubbers represent a significant step forward in enhancing environmental sustainability in pulp and paper mills. These innovative solutions contribute to a cleaner and more sustainable industrial landscape by effectively absorbing and neutralizing harmful gases. At Sly, we’re proud to be part of this journey toward greater environmental responsibility and industry progression. We remain committed to delivering high-quality, customizable solutions that meet the specific needs of our clients while contributing positively to our shared environment. [Contact Us](https://www.slyinc.com/contact/) [FRP Scrubbers](https://www.slyinc.com/blog/category/frp-scrubbers/) **Categories:** FRP Scrubbers --- ### [Should You Customize Your Dust Collection System Design?](https://www.slyinc.com/blog/should-you-customize-your-dust-collection-system-design/) **Published:** November 1, 2017 **Author:** p1ws **Content:** ![impinjet mounted on drum dryer.jpg](https://cdn2.hubspot.net/hubfs/2026920/Blog%20Images/impinjet%20mounted%20on%20drum%20dryer.jpg) Sourcing a dust collection system means considering a variety of factors: wet or dry, efficiency levels, space constraints, pressure levels, energy consumption and more. Another question that engineers have to consider is whether to buy an off-the-shelf dust collection system or configure a custom-designed solution for your facility. This issue requires careful consideration and thoughtful review of the pros and cons of each approach. ## Regulatory Requirements One of the factors that weigh heavily in the custom vs. off-the-shelf question is dealing with regulatory requirements. NFPA, EPA or OSHA regulations can be quite stringent. For example, if the exhaust gasses must contain particulate contaminants below a certain threshold, and you choose to go with an off-the-shelf solution, it may not be able to meet those requirements. Regulatory requirements can include OSHA mandates against silica dust, NFPA mandates on removing explosive dust and particulate matter like flour, and EPA regulations that prohibit the exhaust of heavy metals, toxic gasses, and environmental contaminates into the air. These may require specialized filters, airflow patterns, physical space constraints and other considerations that many off-the-shelf systems may not be able to accommodate. ## Unusual Applications Another consideration for your next system involves reviewing your application. One particular approach calling for custom solutions might be if materials recovery is needed. Say, for example, your setup involves working with titanium or another valuable metal that is cut, sanded, or otherwise aerosolized as part of your process. In these situations, the dust that is created is not merely waste. Rather, it is a valuable material, and its recovery is vital. For these setups, materials recovery requires a higher level of equipment design. Custom solutions offer the opportunity to use very specific filters/cartridges, pre-cleaners, intakes and exhausts and collectors to make sure that metals are filtered and captured. Off-the-shelf systems may lack these necessary components. On the other hand, don’t go overboard to the custom mind-set and make the mistake of assuming your system must be one of a kind. There are very few systems that do not have some precedent or related system already in the field. While it may not feel that way during the detailed process of system design and engineering, do not be shy about asking a supplier or colleague if they have seen a similar setup to yours before. ## Be Aware of Changed Quoting Processes If you opt for a custom solution, be aware that selecting a vendor and particular unit does change the quoting process by adding time and complexity to the whole process. A custom system quote has to define every aspect of the unit, such as types of dust/gasses to be filtered, airflow patterns, space constraints, energy consumption and regulatory compliance/performance, as well as cover accessories.  It can be a lengthy list, since everything custom needs to be spec’d: - Temperature gauges - Humidity monitors - Air pressure sensors - Filter media - Solenoids - Pressures - Solenoids - Paints/Coatings/Finishes - Spouts - And more These typically are already defined in a standard system installation, but custom often starts from a blank sheet sheet of paper. If you are going custom, ensure your quote takes into account elements “outside” the dust collection system.  These typically include plumbing, ductwork, vent hoods or pickups. For those components, custom quotes may specify working with a complementary vendor or subcontractor, so the final system is sure to include source these sub-systems in a way that ensures compatibility with the core collector or scrubber. The quoting process for custom dust collection systems is far more collaborative and back-and-forth than the conventional quoting process, for good reasons. If you are not accustomed to ordering dust handling systems, then designing a custom solution may mean relying more on the experience and engineering support of your supplier than with a standard offering. However, if you are a seasoned “dust designer” and know what works for your application, you will likely have less back-and-forth and will be able to specify more of the system than a customer installing his or her first few systems. Also, remember to consider total lifetime performance requirements of the system. For detailed, complex, or highly-specialized setups, maintenance and operations costs can be different when comparing standard vs. custom. Special filter media can be more costly, or compressed air and energy consumption costs can vary, for example. Sly works closely with our customers with custom dust collection solutions. You can rely on our 143+ years of expertise to design the right system for you. [Request a quote](https://www.slyinc.com/contact/request-quote/) or call us at 1-866-72-3545 for more information. [Request a Quote](https://www.slyinc.com/contact/request-a-quote/) [Dust Collection System](https://www.slyinc.com/blog/category/dust-collection-system/) **Categories:** Dust Collection System --- ### [Sly’s Customized Dust Collection System Resolves AVEKA's Unique Predicament](https://www.slyinc.com/blog/slys-customized-dust-collection-system-resolves-avekas-unique-predicament/) **Published:** February 19, 2018 **Author:** p1ws **Content:** ![impinjet mounted on drum dryer.jpg](https://www.slyinc.com/wp-content/uploads/2024/08/impinjet-mounted-on-drum-dryer-1-scaled.jpg) Most factories require dust collection systems for employee safety and compliance with environmental regulations. Sometimes there are a number of factors to consider, including unique challenges or restrictive space constraints. This was the case with AVEKA, who reached out to Sly for help with their dust collection system. Nearly 150 years of expertise in dust collection allows Sly to utilize their knowledge to design solutions for a wide variety of unique applications. Sly’s selected its Impinjet wet scrubber to solve this challenging problem. AVEKA makes flavorings and additives for food, beverage, and nutraceutical needs using a drum/roll drying process that creates exhaust which includes food flavor particles and dust flakes from a liquid feedstock. They were having issues with material getting plugged up in the ductwork between the dryer and their previous wet scrubber. Sly’s solution was to eliminate the need for ductwork between the dryer and scrubber by mounting an Impinjet Scrubber system directly on top of the dryer. This was possible because of the Impinjet’s unique bottom entry design. To accommodate their height restrictions of 12 feet above the dryer hood, Sly custom engineered and manufactured the equipment to just over 10 feet. The system is effective for AVEKA’s situation. The Impinjet scrubber catches the dust flakes from the dryer exhaust before the air is vented outdoors. Collection efficiency of the Impinjet allows compliance with environmental regulations. Read the full feature article in this month’s [Powder and Bulk Engineering](https://www.powderbulk.com/) magazine, [*Scrubber Cleans Airstream*](https://www.powderbulk.com/enews/2018/editorial/story_pdf/pbe_01_17_18rihf.pdf)*.* At Sly, we work closely with our customers to design the right solution for their specific needs. If you need help with a current dust collection system or need to design a new solution, [contact us](https://www.slyinc.com/contact/) or [request a quote](https://info.slyinc.com/request-quote). We’ll design the right system for your application. [Request a Quote](https://www.slyinc.com/contact/request-a-quote/) [Wet Scrubber](https://www.slyinc.com/blog/category/wet-scrubber/) **Categories:** Wet Scrubber --- ### [Avoiding Costly Baghouse Repairs: Dust Collector Preventative Maintenance Checklist](https://www.slyinc.com/blog/avoiding-costly-baghouse-repairs-dust-collector-preventative-maintenance-checklist/) **Published:** September 5, 2018 **Author:** p1ws **Content:** Following procedures and performing maintenance is essential to ensuring safety and performance in industries ranging from aviation to medicine; not surprisingly, it is also true for dust collection. To ensure that a baghouse continues to run efficiently and to protect people and equipment, operators need to adhere to a checklist of regularly scheduled inspections followed by timely repairs as needed. ![Sly-baghouse-system](https://www.slyinc.com/wp-content/uploads/2024/08/Sly-baghouse-system.jpg) Naturally, every baghouse will have its specific set of checklist items, which should be determined in consultation with the system’s manufacturer, but the procedures outlined here are a good starting point. **Inspection/Maintenance Program:** A baghouse’s preventive maintenance checklist should include periodic inspections with specific items performed on a daily, weekly, monthly, semi-annual and annual basis. **Pressure Drop:** Pressure drop (or differential pressure) is the level of static resistance experienced when operating a positive or negative pressure baghouse. It’s typically measured across the filter bags in inches of water column (in. w.c.). Pressure drop can indicate the amount of dust collected on the filter media; if continually monitored and logged, pressure drop can also provide an indication of the condition of the bags themselves. New filter bags have the lowest pressure drop; as the bags develop a dust cake, the pressure drop will increase accordingly. Keeping a daily log of a baghouse’s differential pressure starting on the day new filter media is installed helps to diagnose problems that may occur (e.g., increasing dust emissions, reduced ventilation air at the dust source, shortened bag life, etc.). Following the filter bags’ initial seasoning or conditioning period, the pressure drop should stabilize into a consistent operating range relative to the cleaning cycle, application and style of equipment. Any deviation should trigger an investigation. **Cleaning System:** A cleaning system is the method used to dislodge accumulated dust cake from the filter media. Without an effective cleaning system, dust will continue to build on the bags, leading to an increased pressure drop and reduced volume of ventilation air at the pick-up points. Airstream velocities within the ductwork will decrease and cause dropout of dust in the ducts, choking the entire system. Pulse valve malfunctions and pulse clamps that come loose can also affect cleaning system performance. **Hopper Discharge:** A baghouse’s hopper is not intended for storing the collected product. This can lead to dust bridging or it might form a solid mass that can be difficult to remove. This mass can fill a hopper to its inlet and plug the unit. With low-density materials, the airstream could sweep the dust into the bag section, ruining filter bags and clogging the dust collector. **Visible Emissions:** Any visual particulate emissions indicate a potential breach in a seal or a torn filter bag. Exceeding permitted particulate emission limits is one problem. Not only can such emissions create health problems and property damage, but a fan located downstream of the collector can be damaged by abrasion or become imbalanced if this condition is not corrected quickly. **Exhaust Fan:** An exhaust fan accelerates ventilation air from the point of pickup through the ductwork and baghouse filter media and out the exhaust stack. A fan is selected to accommodate each application with respect to volume (ACFM) and pressure drop throughout the system. This pressure drop is calculated by evaluating the static resistance of the baghouse, all ductwork and pickup points/hoods. If an exhaust fan has loose or worn belts or an imbalanced impeller, it can’t exhaust the volume of air it was originally designed to handle. Without adequate ventilation air, a dust collection system can’t operate effectively. **Filter Media:** Periodic inspections of the filter bags are mandatory. Inspect the clean air side of the baghouse for leaks.. Pressure drops substantially higher than previous ones may be the result of excessive dust cake or blinding of the filter bags. If the dust cake has hardened to the bags and won’t dislodge easily, moisture in the baghouse is the most likely cause. **Structural Integrity:** An overall inspection should be done annually, including the welds, joints and flange seals. Check the structural support members for signs of fatigue and excessive corrosion. Make sure all fasteners are in place and tightly secured, especially on the ladder and access platform. Replace any missing bolts, clean and re-weld any cross bracing or gussets that may have cracked welds. Look closely at the filter’s external walls for corrosion or signs of bowing. Repair any holes that may have developed in the dust collector walls or hopper(s). **Auxiliary Equipment:** These items include the exhaust fan, rotary airlock valve, screw conveyor, inlet and/or outlet dampers, etc. Follow the manufacturer’s recommended maintenance procedures. **Ductwork:** Periodic inspection of the entire length of ductwork for dust accumulation is strongly advised. Standard practice suggests a minimum airstream velocity within any duct of 3500 feet per minute (fpm), and between 4000 and 4500 fpm for heavier dusts, such as sand. Inadequate velocities will cause dust to tend to settle and accumulate in the ducts, choking the system. This flow restriction will increase the pressure drop in the system and the energy required to get the air moving. To learn more about how to create a preventive maintenance checklist tailored for your specific baghouse dust collector, download a free copy of “[Maintenance Checklist for a Better Baghouse](https://www.slyinc.com/pdfs/DustCollectionMaintenance.pdf)” or contact your Sly representative for assistance. [Download the Guide](https://www.slyinc.com/resources/white-papers/guide-how-to-design-a-dust-collection-system/) [Baghouse](https://www.slyinc.com/blog/category/baghouse/), [Dust Collector](https://www.slyinc.com/blog/category/dust-collector/) **Categories:** Baghouse, Dust Collector --- ### [Infographic: How to Design a Dust Collection System](https://www.slyinc.com/blog/infographic-how-to-design-a-dust-collection-system/) **Published:** October 30, 2018 **Author:** p1ws **Content:** Dust collection systems are essential in many industrial facilities for adhering to clean air standards. **Do you know the basics of designing a dust collection system?** The dust collection process can be broken down into three main steps: 1. Conveying it to the collector 2. Containing or capturing the dust 3. Collecting the dust From calculating ductwork losses to selecting an exhaust fan, our new infographic walks you through the entire design process, outlining the key factors you should consider when designing your system. [Download Full Infographic!](https://www.slyinc.com/wp-content/uploads/2024/09/SLY-902-DesignDustCollectSys_Infographic_v3.pdf) [Dust Collection System](https://www.slyinc.com/blog/category/dust-collection-system/), [Industrial Dust Collector](https://www.slyinc.com/blog/category/industrial-dust-collector/) **Categories:** Dust Collection System, Industrial Dust Collector --- ### [When Should You Use an ePTFE Membrane Filter Bag?](https://www.slyinc.com/blog/when-should-you-use-an-eptfe-membrane-filter-bag/) **Published:** November 12, 2018 **Author:** p1ws **Content:** Any operation that uses a baghouse dust collection system must weigh the advantages and disadvantages of the numerous baghouse filter options available in the market today. The [type of filter bag](https://www.slyinc.com/products/fabric-filter-media-options/) you’ll need to operate at maximum effectiveness and efficiency will depend on the baghouse design, the type of dust involved, and the specific operating conditions of your equipment. ![membrane-filter-bags](https://www.slyinc.com/wp-content/uploads/2024/08/sly-dry-bags.jpg)Felted filter bags, made from polyester and aramid fibers, are some of the most commonly used cloth filters in modern baghouses today. However, filters can be made from many other types of fibers with many different types of finishes applied to these filters. These finishes were created to address specific needs of different baghouses to improve the dust cake release and/or the collection efficiency of the chosen filter media. The ePTFE membrane is among the most commonly used finishes today because of its ability to improve the cake release of sticky dusts and its unmatched ability to filter extremely small particles from the airstream. ## Felted Filters and Finishes Felted filters contain randomly “felted” fibers that are supported by a woven backing material known as a scrim. High energy cleaning techniques, such as pulse-jet cleaning, require the characteristics of strong felted fabrics. Felted bags can be made from an array of commodity and specialized fibers, including polyester, polypropylene, acrylic, fiberglass, Nomex®, Ryton® (polyphenylene sulfide), and P84® polyimide. Each fiber type has its own set of advantages and disadvantages for specific operating environments and offers varying levels of compatibility with a range of chemicals. Polyester felt is the most cost-effective and widely used type of media in pulse-jet style baghouses. Polyester filters offer very good resistance to chemicals, abrasion, and dry heat degradation. For dry heat applications, polyester felt filters offer performance superior to any other synthetics with the exception of [Nomex® (Aramid)](https://www.slyinc.com/products/fabric-filter-media-options/aramid/) and [Teflon®](https://www.slyinc.com/products/fabric-filter-media-options/teflon/). However, polyester isn’t a good choice for moist heat applications because it is subject to hydrolytic degradation under certain circumstances. Polyester offers good resistance to most mineral and organic acids, weak alkalis, most oxidizing agents and most organic solvents. Typical applications range from cement plants to electric furnaces. Its normal maximum continuous operating temperature is 275°F. Felted filter bag makers use various surface treatments to improve their dust cake release properties. These include singeing (exposing the surface fibers to an open flame that melts back the loose fiber ends to which dust particles could adhere), glazing (running the felt through two heated rollers to melt back the loose fiber ends and smooth the surface), and adding a water-and oil-repellent finish made of ePTFE (which is cheaper and more durable than an ePTFE membrane), as well as many others. To learn more about the various felted bag options, see Dry Dust Collector Filter Bags. ## ePTFE Membrane Filter Bags For the most challenging applications, the efficiency and cake release of a filter bag can be greatly enhanced by thermally bonding a thin membrane of ePTFE to the dust side of the filter bag media. Because they offer high filtering efficiency and cake release ability, ePTFE membrane filter bags such as SlyTex (Sly’s ePTFE brand) provide the best available technology in terms of efficiency and filter life. The downside is that the membrane is extremely fragile and care must be taken when handling and installing this type of filter bag. The cost of these types of filter bags has dropped considerably in recent years; as ePTFE membrane bags become more popular, this trend should continue. An ePTFE membrane can be added to most types of fabric filter media. In addition, ePTFE membrane filters have a distinct advantage over non-membrane filters due to differences in the way they filter out particulate. Non-ePTFE membrane filter bags filter particulates using depth filtration, which occurs when a layer of dust cake forms on the outside of the filter, and an accumulation of dust particles is deposited in the depth of the filter. Incoming particles are captured as they work their way through the dust cake and the depth of the filter. As time passes, more and more particles get trapped within the filter, leading to higher pressure drops and eventually filter “blinding,” which reduces filter life. In contrast, ePTFE membrane filters use surface filtration to remove incoming particles. The ePTFE membrane works as the primary filter cake, collecting all of the particulate on the surface because the membrane has extremely small pores, which allow only the air and smallest of particles to pass through. This prevents dust particles from penetrating the filter fabric, which can lead to reduced airflow and filter blinding. The lack of a dust cake on the filter and embedded dust in the depth of the filter also help the dust collector run at a lower differential pressure over time. Pulse cleaning is more through and effective, resulting in a lower cost of operation if an on-demand cleaning system is incorporated. ## The Most Extreme Conditions Call for ePTFE Felt A filter bag made from ePTFE fibers and with a ePTFE membrane (in other words, PTFE on PTFE) gives maximum emissions protection and cake release. When used as the main fiber for a filter bag, ePTFE (Teflon®) offers a normal maximum continuous operating temperature of 500°F. These bags are generally used for severe chemical environments at high temperatures. Common applications include coal-fired power plants, cement production, steel foundries, boilers, carbon black plants, soil remediation systems and incinerators. Furthermore, the low friction properties of ePTFE fibers provide excellent cake discharge. However, PTFE on PTFE is far from inexpensive and is typically used only after all the other options have failed. ## What About Abrasive Dust? It’s possible to achieve high efficiency without an ePTFE membrane, which is important because of the fragile nature of the membrane. The latest innovation in felted filter bags is the development of high-efficiency felted filters constructed with ultra-fine “microfibers.” Because fiber surface area and separation efficiency are directly related, these high efficiency felts can provide up to 10 times the efficiency of conventional felts in general filtration applications. Sly’s high-efficiency felt offering, SlyHE, uses a proprietary blend that includes a high percentage of micro-denier (<1.0 denier) fibers, which significantly increases surface area and reduces pore size for greater separation efficiency without added weight. These cost-effective filters require no special installation. SlyHE felts offer a variety of advantages over commodity felts, including higher filtration efficiency, extremely low emissions rates, and longer bag life due to reduced cleaning intervals. Because the performance of SlyHE felts is based on the total felt design, including a micro-denier fiber blend and heavy-duty scrim, they have significant advantages over ePTFE membrane laminated felts that rely on the fragile micro-thin lamination. These advantages include high efficiency without the fragile membrane, higher strength and durability, and the ability to handle oily, fatty, moist or abrasive dusts, as well as alcohol compounds. In contrast, ePTFE does not work well with liquid hydrocarbons (oily or fatty dust). ## Which Bag is Right for Your Baghouse? ![baghouse](https://www.slyinc.com/wp-content/uploads/2024/08/baghouse-3.jpg)To determine which bag type makes the most sense for your particular combination of operating conditions, it’s best to share as much information as possible with your bag supplier. Each manufacturing process provides a different set of conditions that must be evaluated carefully before selecting the most appropriate filter type: - **Dust type:** The shape and size of the dust will determine which filter material can best capture the dust particles effectively. Small, angular particles (such as those in cement) have a high abrasive potential. Process dust will contain particles of varying sizes, ranging from those visible to the naked eye to sub-micron particles. One of the key advantages of ePTFE membrane filters is their efficiency in filtering sub-micron particles, which can be crucial to complying with OSHA and EPA regulations. In addition to a discussion of dust type, talk with your filter supplier about the velocity of the airflow transporting the dust and the filter unit and ductwork design in your facility. That can help them guide you toward a filter that can offer longer service life. - **Temperature and humidity:** Hygroscopic (moisture-absorbing and –retaining) dusts can quickly become sticky or agglomerative, potentially blinding the filter media. Hydrolysis (chemical breakdown of a compound in reaction to water and heat) can degrade some substrate materials, so it’s important to avoid choosing these materials because they can quickly impact the ability of the filters to maintain efficiency. - **Gas chemistry:** In applications where the process conditions provide a potentially corrosive atmosphere, such as from acids or alkalis, choose the substrate material with care as they have very different characteristics and capabilities. - **Safety considerations:** Some dusts can be corrosive, toxic, or explosive. Selecting an appropriate substrate material, such as a substrate with chemical resistance and anti-static features, can help reduce these risks. - **Filter cleaning mechanism:** It’s important for the vendor to understand how bags are cleaned and the details of the filter unit design to ensure that filters are not subject to undue stress or abrasion, which may affect service life. Filter bag design, in terms of reinforcement and installation, as well as the supporting cage configuration also should be evaluated when choosing the most appropriate substrate material. For help in determining whether a felted or membrane bag will be most cost-effective for your specific filtering application, [contact Sly](https://www.slyinc.com/contact/) for a free assessment of your operating conditions. [Download the Guide!](https://www.slyinc.com/resources/white-papers/guide-how-to-design-a-dust-collection-system/) [Baghouse](https://www.slyinc.com/blog/category/baghouse/), [Dust Collector Replacement Bags](https://www.slyinc.com/blog/category/dust-collector-replacement-bags/), [Dust Filters](https://www.slyinc.com/blog/category/dust-filters/) **Categories:** Baghouse, Dust Collector Replacement Bags, Dust Filters --- ### [How to Properly Start Up Your Dust Collector or Baghouse](https://www.slyinc.com/blog/how-to-properly-start-up-your-dust-collector-or-baghouse/) **Published:** July 17, 2019 **Author:** p1ws **Content:** Learning the right way to start up your dust collector or bag house will optimize performance, help initial blinding, and extend the life of your dust collector’s new filters. Let’s review the proper start-up procedures for new dust collectors and for those with new filter bags installed. ![img-cartridge](https://www.slyinc.com/wp-content/uploads/2024/08/img-cartridge.png)Keep in mind that the following information is just a rough guideline. Afterward you may want to contact your baghouse OEM, as they may suggest some variations unique to their equipment. Before beginning start-up procedures, be sure to inspect your unit for correct installation of the filter bags and operation of related auxiliary equipment. On critical emission installations, you should also perform a dye test to check for any mechanical leaks from worn gaskets or improperly-installed filter bags. For more information on this, see our video on how to perform a dye test at [slyinc.com](file:///C:/Users/Stew%20Thompson/Desktop/slyinc.com). Also be sure to turn the power off when inspecting the equipment and also to perform any lockout, tagout, or other safety procedures as required on rotary valves, screw conveyors and fans. This will help ensure you’re working in a safe environment. ## Season Your Filter Bags: Start-up procedures are used to develop an initial protective dust cake on the filter bags. This is also referred to as pre-coat, **seasoning** or **conditioning** the media, and can be done with the dust you’re collecting, or preferably with agricultural lime, diatomaceous earth, or one of several specifically-developed products available. Seasoning your collector’s filter bags is one of the most important things you can do to ensure your dust collector will perform at its optimal level over the life of the filter media. In a fabric-filtered dust collector, the filter media is used to store the dust cake. The initial dust cake is a coarse layer of collected particulate that develops during the conditioning period of new filter bags. ## Pre-Coat Your Bags to Avoid Blinding: During start-up, you should **pre-coat** your filter bags to protect them from damage caused by dust impacting the new bags at a high velocity, becoming lodged deep in the fibers. This lodged dust will likely be retained permanently, causing an increased pressure drop for the life of the media. In fact, some oily and/or sticky dusts absolutely require this protection beforehand, or the media will clog and will not clean down from the onset—this is called **blinding**. In extreme cases, blinding during start-up can immediately ruin your filter bags, costing you time and money. However, a needle felt filter bag will not reach its highest collection efficiency until an adequate dust cake is developed on the filter media. Because of this, you may be required to bring your new filters up to a desired level of collection efficiency by pre-coating them with a conditioning agent before you can start your process. ## Choose a Good Conditioning Agent: You can use various conditioning agents to pre-coat your filters, such as diatomaceous earth and agricultural limestone., Sly recommends a conditioning agent marketed under the name of **PreKote** and available through Sly. PreKote forms a uniform three-dimensional porous dust cake which is ideal for efficient and effective baghouse operation. You’ll also use much less PreKote than any other type of conditioning agent, saving on cost. Note: We recommend you avoid using un-hydrated lime, pebble, quicklime, fly ash, and any material that is hydroscopic, non-agglomerating or spherical in particle shape. ## Procedures When Using a Pre-Coat Agent: Ensure that you have enough conditioning agent on hand. To calculate how much you need when using PreKote conditioning agent, take the total square foot of filtered media in the baghouse and divide by 0.042. This number is the total pounds of conditioning agent your baghouse will require, or just over one pound for each 40 square feet of media. For diatomaceous earth, use 1 lb for 20 square feet of media, and agricultural limestone will require 1 lb for every 5 square feet of media. If you don’t know how many square feet of media your filter bags have, you’ll need to take measurements. If the filter is tubular-bagged, simply take the bag diameter, multiply it by pi (3.1416), then multiply that by the bag length in inches, then divide by 144, and the result is the square feet for one bag. Multiply this number by the number of filters in the unit, and you’ll know the total square feet of filter media in your dust collector. To start pre-coating the new media, first be sure to turn the post-cleaning system off. You can now start the exhaust fan with the damper closed to 50 to 60% of design volume. Then introduce the pre-coat material into your collector. You can do this through an access door in your duct work or a hopper. You may need to install a small two- to three-inch diameter takeoff with a blast gate in your inlet duct work. The rate of feet for the pre-coat should not exceed 10 lbs per minute maximum on units designed up to 25 thousand CFM; 25 lbs per minute on units designed for 25 to 50 thousand CFM; 45 lbs per minute for units between 50 and 75 thousand CFM; 60 lbs per minute for 75 to 100 thousand CFM; and 100 lbs per minute for units between 100 and 200 thousand CFM. Maintain this flow of pre-coat until the baghouse differential pressure stabilizes, anywhere from one to three inches in water gauge. Once the differential pressure stabilizes, you can be sure of an even layer of dust cake on your filters. Now move the damper or blast gate to full open or previous full operation set point and begin collecting dust from your process. When the differential pressure reaches four to five inches of water, initiate one complete cleaning cycle. Pressure drop should then go down to one to two inches of water. Now when the differential pressure returns to four to six inches, you can start your automatic cleaning system. ## Monitor Pressure Drop to Spot Issues Now that the filters are seasoned and you have resumed production, monitor pressure drop and adjust the amount of cleaning to achieve a stable condition. This will require adjusting the duration of your on-time and off-time pulse-cleaning timer settings. Be sure to monitor your dust collector’s pressure drop over time; best practice is to record differential pressure each day. This will allow you the ability to spot developing issues with your dust collector. ## Optional: Preheating in Dryer or Dryer Cooler Applications: If your baghouse is installed on a dryer or dryer cooler application, you’ll need to use a slightly- different start-up procedure. You may also need to perform startup without using a pre-coating agent. Watch our [YouTube video](https://www.youtube.com/watch?v=8zQtfWqtYAk&t=37s.) which covers startup in these cases. ## The Dust Collection Experts This should give you a rough framework to properly perform dust collector start-up procedures. However, please always remember to follow your company’s safety procedures when working on any equipment at your facility. To learn more, watch our full video at <https://www.youtube.com/watch?v=8zQtfWqtYAk&t=37s>. For further assistance, just give us a call at **800-334-2957**, or visit our website at [slyinc.com](https://ggcomm.sharepoint.com/SLY/Shared%20Documents/1047%20Blogs/slyinc.com). [Download the Guide!](https://www.slyinc.com/resources/white-papers/guide-how-to-design-a-dust-collection-system/) [Baghouse System](https://www.slyinc.com/blog/category/baghouse-system/), [Dust Collector Maintenance](https://www.slyinc.com/blog/category/dust-collector-maintenance/), [Dust Collectors](https://www.slyinc.com/blog/category/dust-collectors/) **Categories:** Baghouse System, Dust Collector Maintenance, Dust Collectors --- ### [How to Change-Out Your Sly Envelope Style Dust Collector Bag](https://www.slyinc.com/blog/how-to-change-out-your-sly-envelope-style-dust-collector-bag/) **Published:** August 14, 2019 **Author:** p1ws **Content:** At Sly we often receive questions from callers about the right way to change-out the filter bags on their dust collectors. While it’s a detailed process, learning how to change-out your envelope filter bags will save you both time and money otherwise spent replacing them earlier than necessary. Whether you have a reverse-air Dynaclone, an envelope Shaker collector, or a pulse-clean Pactecon, many of these tips apply to all bag styles. ## Preparing to Change-Out the Bag: ![changeout](https://www.slyinc.com/wp-content/uploads/2024/08/changeout.jpg)Sly envelope style collectors have a typical envelope-style dust wall, although depending on your specific model type, it may have larger sections or even several tiers. This includes dust wall pins to hold the bags in place, studs for securing dust wall clips, and an angle or channel in the back for bag tension. Before performing any maintenance on your dust collector, first make sure you complete all your company’s safety, lock-out, and tag-out procedures. Afterward, remove the front and rear doors from the dust collector, loosen or cut the old eye bolts, remove the dust wall clips, and take out the old filter bags. However, make sure to maintain some of the hardware such as the rear mullions and bag spacers. ## Change-Out Checklist: - Replace the Gasket - Install the Single-Wire Cloth Strip - Install the Filter Bag - Install the 2nd Bag - System-Specific Steps - Tension the Bags - Final Inspection ## Replace the Gasket: An important step people often neglect when changing envelope filter bags on Sly dust collectors is to remove the old dust wall gasket and replace it with a new one, both on top and bottom of the frame. Scrape any residue from the old dust wall gasket off the frame using a wire brush or putty knife prior to putting the new dust wall gasket in place. ## Install the Single-Wire Claw Strip: Once you’ve replaced the dust wall gaskets on both the top and the bottom of the cell, the next step is to install the single-wire cloth strip. Position it on the dust wall pins located on the end of the unit. Make sure that the single-wire cloth strip is on the inside of the frame next to the filter bags. ## Install the Filter Bag: Before you can install the filter bags into the dust collector, you’ll need to put the rear mullion into the back of the filter bag. Dynaclone and Pactecon bags feature an independently-sewn pocket for the rear mullion. However, Sly shaker dust collectors don’t have that pocket, so you’ll have to insert the rear mullion at the top and drop it all the way to the bottom of the filter bag. For a demonstration using a envelope filter bag, watch our [YouTube video](https://www.youtube.com/watch?v=iyQbxbqaMeY). Now you’re ready to install the envelope filter bag into your dust collector. The rear mullion is positioned such that the pin extends through the bottom hole of the filter bag. At this point you’re going to need an assistant at the rear of the dust collector. - Begin by putting the filter bag into the dust collector and attaching the top ear to the top dust wall stud. - The person at the rear of the unit will have already positioned the eye bolt, spring, washer, and nut assembly. Fish the S-hook off the back mullion and connect it to the eye bolt. - With the eye bolt still loosely secured in the rear, the person in the front can now put the lower ear over the lower dust wall stud and begin putting the flaps over the dust wall pins. - The next step is to install the first front mullion. Put the mullion pins through the holes on the filter bags, from the top down to the bottom. Once all the pins are through the flap, grab the front mullion and twist it into position between the first two studs. ## Install the Second Bag: Installation of the second bag is identical to that of the first. Insert the bag into the cell, placing the ear over the top dust wall studs. As before, have your assistant at the rear of the dust collector connect the eye bolt to the rear mullion. Now place the lower ear over the lower dust wall stud and fold the flap of the second bag over the flap of this first bag and insert these front mullion pins through the second bag. Continue this assembly procedure for all the bags in this section. As before, put the front mullion pins through the holes in the flap, top to bottom. Once inserted, twist the front mullion into place between the two studs on the top and the two studs on the bottom. Once you reach the edge of your dust collector or this cell, one of two things will occur. You’ll either reach the outside wall or you’ll reach the end of one section and the beginning of another section. If it happens to be the outside wall, you’ll take a single-wire cloth strip, place it over the dust wall pins against the frame, and then take the flap of the last bag and place it over the dust wall pins. If instead it happens to have an adjoining cell, place the double-wire cloth strip over the dust wall pins, the flap of the last bag, and over the pins as well. Then take the double-wire cloth strip and place it over the pins on the adjoining cell. ## System-Specific Steps: - If you’re re-bagging a Shaker collector or a Pactecon, you’re ready to put your dust wall clips on, insert your spacers, and put the final tension on the filter bags at the rear of the collector. - If on the other hand you’re re-bagging a Dynaclone, you’re going to have to put some armor guard components on the face of the bags to protect them from the traveler as it goes back and forth. To learn more, visit [slyinc.com](https://www.slyinc.com/) and watch our armor guard installation video. ## Tension the Bags: To tension the bags, draw the nut down on the eye bolt until the compression or the dimension of the compressed spring reaches a specific distance. On a Pactecon PC-100, it’s one-and-three- quarter inches. On a 200-series Pactecon, a Dynaclone, and a Shaker filter, it’s three- and-a-half inches. ## Final Inspection: Now that all your bags are properly tensioned, do a final overall inspection and replace the front and rear access panels. During the change-out, you may have noticed some broken or worn components, such as spacers, eye bolts, springs, or front and rear mullions. All of these are available for overnight delivery from Sly through our after-market department. However, prior to a change-out, we recommend having a few of these wear components on hand. ## The Dust Collection Experts Now you should be able to change-out your dust collector bags with a minimum of hassle, and they’ll also last longer. For a full demonstration of a bag change-out, watch our [YouTube video](https://www.youtube.com/watch?v=iyQbxbqaMeY). And don’t forget, visit us at [slyinc.com](https://www.slyinc.com/) for all your air pollution control needs. [Download the Guide!](https://www.slyinc.com/resources/white-papers/guide-how-to-design-a-dust-collection-system/) [Bag Filter Cleaning](https://www.slyinc.com/blog/category/bag-filter-cleaning/), [Dust Collector Inspection](https://www.slyinc.com/blog/category/dust-collector-inspection/), [Dust Collector Repair](https://www.slyinc.com/blog/category/dust-collector-repair/) **Categories:** Bag Filter Cleaning, Dust Collector Inspection, Dust Collector Repair --- ## Pages ### [Home](https://www.slyinc.com/) **Published:** June 24, 2024 **Author:** Mike Eaton **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/10/Dust-Collector-Hero-Sly.jpg "Dust-Collector-Hero-Sly | Sly Air Pollution Control") # Air Pollution Control Systems **Trust Sly when it comes to controlling the most challenging industrial dust environments.** ![](https://www.slyinc.com/wp-content/uploads/2024/10/sly-150-centered.png "sly-150-centered | Sly Air Pollution Control") ## No compromise. --- Don’t compromise. From our patent for the first-ever cloth-type dust collector in 1902 to today’s latest custom dry dust and wet scrubbing technologies, customers worldwide trust Sly, LLC for the cleanest air possible. We have experience designing and manufacturing air pollution control systems for almost every industrial dust collection application. [Contact Us](https://www.slyinc.com/contact/) ### Products [![](https://www.slyinc.com/wp-content/uploads/2024/06/dry-dust-collector.jpg "dry-dust-collector | Sly Air Pollution Control")](https://www.slyinc.com/dust-collectors/) [Dust Collectors](https://www.slyinc.com/dust-collectors/) [![](https://www.slyinc.com/wp-content/uploads/2024/06/wet-scrubber.jpg "wet-scrubber | Sly Air Pollution Control")](https://www.slyinc.com/frp-wet-scrubbers/) [Wet Scrubbers](https://www.slyinc.com/products/industrial-wet-scrubbers/) [![](https://www.slyinc.com/wp-content/uploads/2024/10/bulk-material-loading-spouts.jpg "bulk-material-loading-spouts | Sly Air Pollution Control")](https://www.slyinc.com/products/industrial-bulk-solids-loading-spouts/) [Loading Spouts](https://www.slyinc.com/products/industrial-bulk-solids-loading-spouts/) [![](https://www.slyinc.com/wp-content/uploads/2024/10/SLy-genuine-replacement-parts.jpg "SLy-genuine-replacement-parts | Sly Air Pollution Control")](https://www.slyinc.com/products/replacement-parts/) [Replacement Parts](https://www.slyinc.com/products/replacement-parts/) [![](https://www.slyinc.com/wp-content/uploads/2024/10/sheet-metal-fabricated-parts.jpg "sheet-metal-fabricated-parts | Sly Air Pollution Control")](https://www.slyinc.com/products/custom-sheet-metal-fabrication/) [Sheet Metal Fabrication](https://www.slyinc.com/products/custom-sheet-metal-fabrication/) [![filter bag options](https://www.slyinc.com/wp-content/uploads/2024/10/filter-bags-Sly-Dust-Collector.jpg "filter-bags-Sly-Dust-Collector | Sly Air Pollution Control")](https://www.slyinc.com/products/dry-dust-collector-filter-bags/) [Dust Collector Filter Bags](https://www.slyinc.com/products/dry-dust-collector-filter-bags/) Sly designs and manufactures a high-quality line of reliable baghouses, dust collectors, wet scrubbers, loading spouts, replacement parts, sheet metal fabrication, and a variety of fabric filter media options that will keep your company running cleanly and efficiently for years to come. Our team will assist you through the project from start to finish. Feel free to browse our selection of equipment components and contact our customer representatives to request a quote for your next project. #### Browse By Industry [![](https://www.slyinc.com/wp-content/uploads/2024/06/biomass-conversion-dust-recapture.png "biomass-conversion-dust-recapture | Sly Air Pollution Control")](https://www.slyinc.com/industries/biomass/) **[Biomass](https://www.slyinc.com/industries/biomass/)** [![](https://www.slyinc.com/wp-content/uploads/2024/06/carbon-black-dust-collection.png "carbon-black-dust-collection | Sly Air Pollution Control")](https://www.slyinc.com/industries/carbon-black/) **[Carbon Black](https://www.slyinc.com/industries/carbon-black/)** ![cement icon](https://www.slyinc.com/wp-content/uploads/2025/01/cement-asphalt1.png "cement-asphalt1 | Sly Air Pollution Control") **[Cement & Asphalt](https://www.slyinc.com/industries/cement-asphalt/)** [![](https://www.slyinc.com/wp-content/uploads/2024/06/chemical-processing.png "chemical-processing | Sly Air Pollution Control")](https://www.slyinc.com/industries/chemicals/) **[Chemicals](https://www.slyinc.com/industries/chemicals/)** [![](https://www.slyinc.com/wp-content/uploads/2024/06/coal-fly-ash-air-control.png "coal-fly-ash-air-control | Sly Air Pollution Control")](https://www.slyinc.com/industries/fly-ash/) **[Fly Ash](https://www.slyinc.com/industries/fly-ash/)** [![](https://www.slyinc.com/wp-content/uploads/2024/06/food-pet-food-processing.png "food-pet-food-processing | Sly Air Pollution Control")](https://www.slyinc.com/industries/food-processing/) **[Food Processing](https://www.slyinc.com/industries/food-processing/)** [![](https://www.slyinc.com/wp-content/uploads/2024/06/lithium-processing-air-pollution-control.png "lithium-processing-air-pollution-control | Sly Air Pollution Control")](https://www.slyinc.com/industries/lithium/) **[Lithium](https://www.slyinc.com/industries/lithium/)** [![](https://www.slyinc.com/wp-content/uploads/2024/06/metalworking-dust.png "metalworking-dust | Sly Air Pollution Control")](https://www.slyinc.com/industries/metalworking/) **[Metalworking](https://www.slyinc.com/industries/metalworking/)** [![](https://www.slyinc.com/wp-content/uploads/2024/06/mining-minerals-dust-control.png "mining-minerals-dust-control | Sly Air Pollution Control")](https://www.slyinc.com/industries/mining-minerals/) **[Mining & Minerals](https://www.slyinc.com/industries/mining-minerals/)** [![](https://www.slyinc.com/wp-content/uploads/2024/06/oil-gas-processing.png "oil-gas-processing | Sly Air Pollution Control")](https://www.slyinc.com/industries/oil-gas/) **[Oil & Gas](https://www.slyinc.com/industries/oil-gas/)** [![](https://www.slyinc.com/wp-content/uploads/2024/06/pharmaceuticals-processing.png "pharmaceuticals-processing | Sly Air Pollution Control")](https://www.slyinc.com/industries/pharmaceuticals/) **[Pharmaceuticals](https://www.slyinc.com/industries/pharmaceuticals/)** [![](https://www.slyinc.com/wp-content/uploads/2024/06/plastics-air-pollution-control.png "plastics-air-pollution-control | Sly Air Pollution Control")](https://www.slyinc.com/industries/plastics/) **[Plastics](https://www.slyinc.com/industries/plastics/)** [![](https://www.slyinc.com/wp-content/uploads/2024/10/powder-bulk-solids-processing.png "powder-bulk-solids-processing | Sly Air Pollution Control")](https://www.slyinc.com/industries/powder-bulk-solids/) **[Powder & Bulk Solids](https://www.slyinc.com/industries/powder-bulk-solids/)** ##### Baghouse Analysis Service We’re proud to offer a filter bag and particle analysis to allow our customers to focus on what they do best. While customers focus on profitably operating their business, Sly’s analysis offerings will provide guidance to selecting the most efficient and cost-effective air pollution control solutions. [Learn More](https://www.slyinc.com/services/) --- ### [Baghouse Manufacturer](https://www.slyinc.com/products/baghouse-manufacturer/) **Published:** July 2, 2024 **Author:** Mike Eaton **Content:** ![Yellow spiral staircase and safety railing on a gray industrial structure with a large SLY sign against a blue sky.](https://www.slyinc.com/wp-content/uploads/2026/07/Baghouse-Manufacturing-Hero-1024x512.jpg "Baghouse-Manufacturing-Hero | Sly Air Pollution Control") # Industrial Baghouse Manufacturer **First in Fabric Filtration. First in the U.S. Patent Office.** ## Engineered Baghouse Systems Built for Demanding Industrial Applications --- **For more than 150 years**, Sly has designed and manufactured custom **industrial baghouse dust collectors** that deliver reliable particulate control across some of the most demanding applications in manufacturing: cement and minerals, chemicals and carbon black, power generation, food processing, metals, lithium and battery recycling, and beyond. We hold the **first U.S. patent for a cloth-type dust collector**. Every system we build today is still engineered the same way it was then, around the specific conditions of your process. ## Request a Quote [Talk With an Engineer](https://www.slyinc.com/contact/request-a-quote/) ## Why Choose Sly as Your Baghouse Manufacturer? ### 150+ Years of Manufacturing Experience ### Custom Engineered Systems ### Made in USA ### High Collection Efficiency ### Designed for Challenging Dust ### Nationwide Engineering Support ### Replacement Parts & Service ![](https://www.slyinc.com/wp-content/uploads/2025/01/STJ-1111-54-SB-baghouse.jpg "STJ-1111-54-SB-baghouse | Sly Air Pollution Control") ## Baghouse Systems We Manufacture --- ### [TubeJet Baghouses](https://www.slyinc.com/products/dust-collectors/tubejet-baghouse-dust-collectors/stj-sbr-square-series-pulse-jet-collectors/) [![Blue industrial bulk storage silo with a staircase and access platform beside a warehouse, outdoors.](https://www.slyinc.com/wp-content/uploads/2026/07/Sly-Baghouse-Manufacturer.jpg "Sly-Baghouse-Manufacturer | Sly Air Pollution Control")](https://www.slyinc.com/products/dust-collectors/tubejet-baghouse-dust-collectors/stj-sbr-square-series-pulse-jet-collectors/) ### [Reverse Air Baghouses](https://www.slyinc.com/products/dust-collectors/reverse-air-collectors/) [![Two tall industrial filtration units on a rooftop, connected by large curved ducts.](https://www.slyinc.com/wp-content/uploads/2026/07/Reverse-Air-System.jpg "Reverse-Air-System | Sly Air Pollution Control")](https://www.slyinc.com/products/dust-collectors/reverse-air-collectors/) ### [Custom Fabric Filters](https://www.slyinc.com/products/dry-dust-collector-filter-bags/) [![Collection of HVAC air filters and components (filters, duct tape, gaskets) arranged on a blue abstract background.](https://www.slyinc.com/wp-content/uploads/2026/08/Baghouse-Custom-Fabric-Filters.jpg "Baghouse-Custom-Fabric-Filters | Sly Air Pollution Control")](https://www.slyinc.com/products/dry-dust-collector-filter-bags/) ### [Retrofits](https://www.slyinc.com/products/dust-collectors/replacement-parts/retrofits/) [![Blue industrial machine with yellow safety stairs and railing in a factory setting.](https://www.slyinc.com/wp-content/uploads/2026/07/Retrofit-Dust-Collectors.jpg "Retrofit-Dust-Collectors | Sly Air Pollution Control")](https://www.slyinc.com/products/dust-collectors/replacement-parts/retrofits/) ### [Replacement Parts](https://www.slyinc.com/products/dry-dust-collector-filter-bags/) [![Two tall blue SLY-brand electrical transformers with control panels on top, installed side by side outdoors.](https://www.slyinc.com/wp-content/uploads/2026/07/Replacement-Dust-Collectors.jpg "Replacement-Dust-Collectors | Sly Air Pollution Control")](https://www.slyinc.com/products/dust-collectors/replacement-parts/) ## Why Custom Engineering Matters No two facilities process dust the same way, even when they’re running the same material. For example, two cement plants can require entirely different baghouse systems depending on operating temperature, dust loading, moisture content, abrasiveness, and available airflow. A system sized and specified for one set of conditions will underperform, wear out prematurely, or fail to meet compliance requirements when those conditions change. ![Aerial view of an industrial processing plant with intertwined conveyor belts and metal platforms on a dusty yard.](https://www.slyinc.com/wp-content/uploads/2026/07/cement-plant-1024x512.jpg "cement-plant | Sly Air Pollution Control") Sly engineers each baghouse around the actual parameters of your application, not the nearest catalog match. The variables that determine the right system include: - **Temperature** — elevated exhaust temperatures affect filter media selection and housing materials - **Dust loading** — high inlet grain loading changes cleaning frequency, hopper capacity, and air-to-cloth ratio requirements - **Abrasiveness** — highly abrasive particulate requires reinforced inlet designs and wear-resistant steel to prevent premature housing failure - **Moisture and humidity** — condensation risk influences cleaning method selection and can rule out certain filter media entirely - **Airflow volume and velocity** — inlet velocity must be controlled to avoid direct impingement on filter bags, which shortens bag life Getting these factors right from the start is the difference between a dust collection system that runs reliably for decades and one that requires constant intervention. ## Industries We Serve [![](https://www.slyinc.com/wp-content/uploads/2024/10/food-processing-thumb.jpg "food-processing-thumb | Sly Air Pollution Control")](https://www.slyinc.com/industries/food-processing/) **[Food Processing](https://www.slyinc.com/industries/food-processing/)** [![mining and mineral processing](https://www.slyinc.com/wp-content/uploads/2024/10/mining-minerals-processing-thumb.jpg "mining-minerals-processing-thumb | Sly Air Pollution Control")](https://www.slyinc.com/industries/mining-minerals/) **[Mining & Minerals](https://www.slyinc.com/industries/mining-minerals/)** [![](https://www.slyinc.com/wp-content/uploads/2024/10/chemical-processing-thumb.jpg "chemical-processing-thumb | Sly Air Pollution Control")](https://www.slyinc.com/industries/chemicals/) **[Chemical](https://www.slyinc.com/industries/chemicals/ "Chemicals")** [![](https://www.slyinc.com/wp-content/uploads/2024/10/metalworking-dust-thumb.jpg "metalworking-dust-thumb | Sly Air Pollution Control")](https://www.slyinc.com/industries/metalworking/) **[Metalworking](https://www.slyinc.com/industries/metalworking/ "Metalworking")** [![](https://www.slyinc.com/wp-content/uploads/2024/10/biomass-industry-thumb.jpg "biomass-industry-thumb | Sly Air Pollution Control")](https://www.slyinc.com/industries/biomass/) **[Biomass](https://www.slyinc.com/industries/biomass/ "Biomass")** [![](https://www.slyinc.com/wp-content/uploads/2024/10/cement-asphalt-thumb.jpg "cement-asphalt-thumb | Sly Air Pollution Control")](https://www.slyinc.com/industries/cement-asphalt/) **[Cement & Asphalt](https://www.slyinc.com/industries/cement-asphalt/ "Cement & Asphalt")** [![carbon black](https://www.slyinc.com/wp-content/uploads/2024/07/carbon-black-dust-collection.jpg "carbon-black-dust-collection | Sly Air Pollution Control")](https://www.slyinc.com/industries/carbon-black/) **[Carbon Black](https://www.slyinc.com/industries/carbon-black/)** [![fly ash cement](https://www.slyinc.com/wp-content/uploads/2024/12/sly-flyash-blog-image-2.jpg "sly-flyash-blog-image-2 | Sly Air Pollution Control")](https://www.slyinc.com/industries/fly-ash/) **[Fly Ash](https://www.slyinc.com/industries/fly-ash/)** [![](https://www.slyinc.com/wp-content/uploads/2024/10/lithium-battery-industry-thumb.jpg "lithium-battery-industry-thumb | Sly Air Pollution Control")](https://www.slyinc.com/industries/lithium/) **[Lithium](https://www.slyinc.com/industries/lithium/ "Lithium")** [![pharma](https://www.slyinc.com/wp-content/uploads/2024/10/pharma-thumbnail.jpg "pharma thumbnail | Sly Air Pollution Control")](https://www.slyinc.com/industries/pharmaceuticals/) **[Pharmaceuticals](https://www.slyinc.com/industries/pharmaceuticals/)** ## Applications ### Product Recovery ### Dust Collection ### Filtration ### Material Handling ### Combustible Dust ### Process Ventilation ### Pollution Control ### Air Quality ![Logo illustrating an air pollution control tower with blue 'AIR POLLUTION' and yellow 'CONTROL' text and airflow arrows above, in a blueprint style.](https://www.slyinc.com/wp-content/uploads/2026/07/Baghouse-Applications.jpg "Baghouse-Applications | Sly Air Pollution Control") ![Industrial processing plant with beige/bronze metal structures, yellow safety rails, and a platformed conveyor under a blue sky.](https://www.slyinc.com/wp-content/uploads/2026/08/Manufactured-Installed-Baghouses-1024x512.jpg "Manufactured-Installed-Baghouses | Sly Air Pollution Control") ## Our Baghouse Manufacturing Process ![Industrial factory floor with a gray machine surrounded by bright yellow safety railing and a large blue SLY logo on the side.](https://www.slyinc.com/wp-content/uploads/2026/07/manufacturing-sly-baghouse.jpg "manufacturing-sly-baghouse | Sly Air Pollution Control") 01 ### Design Consultation 02 ### Process Review 03 ### Engineering 04 ### Manufacturing 05 ### Factory Testing 06 ### Installation Support 07 ### Long-Term Service ## **FAQs – Baghouses** **What should I look for in a baghouse manufacturer?** With more than 150 years in the air pollution control industry, Sly has designed and manufactured baghouse dust collectors for a wider range of applications than most suppliers will encounter in their entire history. When evaluating a baghouse manufacturer, look for demonstrated engineering depth, in-house fabrication capability, named product lines with documented performance, and aftermarket support you can count on over the life of the system. A manufacturer worth working with will assess your specific application conditions before recommending anything, including dust type, operating temperatures, airflow, moisture, space constraints, and any combustibility or compliance requirements. ****Can baghouses be custom engineered?**** Yes. Most industrial applications require some level of customization. A standard catalog unit rarely accounts for the specific combination of dust characteristics, inlet velocity requirements, space limitations, and cleaning method required by a given facility. Sly engineers each baghouse to suit your process conditions, including custom housing configurations, abrasion-resistant components, modified hoppers, HEPA integration, and explosion protection where required. ****How long does a baghouse last?**** A well-engineered baghouse can remain in service for decades. The housing itself commonly lasts 20 years or longer when properly designed and maintained. Filter bag life varies by dust type, cleaning frequency, and operating conditions, but Sly’s TubeJet collectors have documented cases of original filter bags running continuously since 2006 with only monthly pulse cleaning required. The key is proper engineering from the start: correct air-to-cloth ratio, appropriate media selection, and cleaning controls matched to your actual dust load. Systems designed around the application rather than around a catalog spec consistently outperform and outlast generic equipment. Sly baghouse dust collectors are designed to achieve collection efficiencies of 99% or greater. **What industries use industrial baghouses?** Baghouse dust collectors are used across virtually every industry where airborne particulate must be captured and controlled. Sly serves power generation, sand and aggregates, mining and minerals, cement and asphalt, carbon black, chemicals and plastics, lithium production and battery recycling, rare earth processing, biomass and waste-to-energy, food processing, metalworking, and pharmaceutical manufacturing, among others. Applications range from standard particulate control to high-temperature, high-moisture, combustible dust, and regulated-emissions environments that require more than off-the-shelf equipment. ****Can existing baghouses be upgraded?**** Yes. Sly offers retrofits and upgrades for aging or underperforming collectors, including its own legacy units and many competitor designs. Common upgrade scenarios include replacing worn inlet components with abrasion-resistant fabrications, adding explosion protection to bring a collector into compliance with NFPA standards, upgrading filter media, and modifying cleaning systems to reduce compressed air consumption or extend bag life. In some cases, a drop-in replacement collector is more cost-effective than continued repairs on a worn unit. ****Does Sly manufacture replacement baghouses?**** Yes. Sly designs and manufactures baghouse dust collectors at its fabrication facility, including the TubeJet baghouse line. Systems are engineered to order around your application requirements. When a direct replacement is needed, Sly can also engineer a new collector to match the physical footprint and connections of an existing unit, minimizing installation time and avoiding costly facility modifications. ****Do you provide replacement filter bags?**** Yes. Sly supplies replacement filter bags for its own collectors as well as many competitor units. Filter media options include polyester, fiberglass, aramid, P-84, Teflon, polypropylene, and other specialized materials selected based on the dust type, operating temperature, and chemical environment of your application. Sly also offers its proprietary SlyMax high-efficiency filter media for demanding applications. ****How do I size a baghouse?**** Baghouse sizing is determined by several interrelated factors: the volume of air to be processed (typically expressed in cubic feet per minute), the type and concentration of dust in the airstream, the required air-to-cloth ratio for the filter media, inlet velocity, hopper capacity, and the cleaning method. Getting this right requires understanding the full process, not just the airflow number. Undersized collectors lead to high pressure drop and shortened filter life; oversized ones can cause dust to fall back through filters during cleaning. Sly’s engineers work through each of these parameters with you before specifying a system. ****Can Sly retrofit an existing collector?**** Yes. Sly has experience retrofitting both its own legacy equipment and collectors from other manufacturers. Retrofit work ranges from replacing worn or non-compliant components to converting an older shaker or reverse-air collector to pulse-jet cleaning. If your existing collector is structurally sound but underperforming, a targeted retrofit is often a faster and more cost-effective path than a full replacement. Sly will assess the existing unit and recommend the approach that best fits your operational and budget requirements. ###### Featured Resources ![baghouse system](https://www.slyinc.com/wp-content/uploads/2024/08/Sly-baghouse-system-2.jpg "Sly-baghouse-system | Sly Air Pollution Control") #### What Is a Baghouse? A baghouse is an industrial air pollution control system that uses fabric filter bags to capture airborne dust and particulates, achieving high filtration efficiency across various processing industries. [Read More](https://www.slyinc.com/blog/what-is-a-baghouse/) ![](https://www.slyinc.com/wp-content/uploads/2024/09/sly-resource-thumb-maintenance-checklist-for-a-better-baghouse-parts-down-campaign.webp "sly-resource-thumb-maintenance-checklist-for-a-better-baghouse-parts-down-campaign | Sly Air Pollution Control") #### Baghouse Maintenance Optimize your dust collection system’s efficiency with Sly’s free [baghouse maintenance checklist](https://info.slyinc.com/maintenance-checklist-for-a-better-baghouse-download-1?_gl=1%2A2r3v0r%2A_gcl_au%2ANDI3MjcwNS4xNzg2NjM1Nzky%2A_ga%2AMTM2NzA2ODE0NC4xNzI1NjQyNzE4%2A_ga_0G2M9CMRL1%2AczE3ODY2MzY3MzYkbzEkZzEkdDE3ODY2MzY5NTMkajI4JGwwJGgxMjY3ODczMTU5). Access inspection logs, essential terminology, and static pressure data charts to extend equipment performance and life. [Read More](https://info.slyinc.com/maintenance-checklist-for-a-better-baghouse-download-1?_gl=1%2Arnumo%2A_gcl_au%2ANDI3MjcwNS4xNzg2NjM1Nzky%2A_ga%2AMTM2NzA2ODE0NC4xNzI1NjQyNzE4%2A_ga_0G2M9CMRL1%2AczE3ODY2MzY3MzYkbzEkZzEkdDE3ODY2Mzc0NDIkajQyJGwwJGgxMjY3ODczMTU5) ![FlexKleen Pulse Pipes and Tube Sheet](https://www.slyinc.com/wp-content/uploads/2018/06/8-FlexKleen-Pulse-Pipes-and-Tube-Sheet-scaled.jpg "#8 FlexKleen Pulse Pipes and Tube Sheet | Sly Air Pollution Control") #### Differential Pressure Learn how monitoring [differential pressure](https://www.slyinc.com/blog/how-to-monitor-baghouse-health-through-differential-pressure/) across baghouse filter bags helps identify leaks, filter blinding, and cleaning system failures early, thereby maintaining peak filtration efficiency and extending bag life. [Read More](https://www.slyinc.com/blog/how-to-monitor-baghouse-health-through-differential-pressure/) ![design a dust collection system](https://www.slyinc.com/wp-content/uploads/2024/08/dustcollectionguidecover.png "dustcollectionguidecover | Sly Air Pollution Control") #### How to Design a Dust Collection System Learn how to design an efficient industrial [dust collection system](https://www.google.com/search?q=https://www.slyinc.com/products/replacement-parts/9). This comprehensive guide covers identifying collection points, calculating air volume, hood design, and proper ductwork sizing for regulatory compliance. [Read More](https://info.slyinc.com/dry-dust-collection-system-design-guide-1?_gl=1%2Aiiaaki%2A_gcl_au%2ANDI3MjcwNS4xNzg2NjM1Nzky%2A_ga%2AMTM2NzA2ODE0NC4xNzI1NjQyNzE4%2A_ga_0G2M9CMRL1%2AczE3ODY2MzY3MzYkbzEkZzEkdDE3ODY2MzgxMjkkajU4JGwwJGgxMjY3ODczMTU5) ![TubeJet Air Pollution Control System](https://www.slyinc.com/wp-content/uploads/2024/12/STJ-TubeJet-Air-Pollution-Control-System.jpg "STJ-TubeJet-Air-Pollution-Control-System | Sly Air Pollution Control") #### Baghouse Troubleshooting Learn essential troubleshooting basics for pulse-jet dust collectors. Discover how monitoring differential pressure helps identify issues with filter bags, compressed air, and ductwork to maintain peak system efficiency. [Read More](https://www.slyinc.com/blog/troubleshooting-basics-for-tubejet-pulse-jet-dust-collection-systems/) ![filter bag fabrics](https://www.slyinc.com/wp-content/uploads/2024/11/filter-bag-fabrics.png "filter-bag-fabrics | Sly Air Pollution Control") #### Filter Media Optimize your dust collection system’s efficiency with Sly’s free [baghouse maintenance checklist](https://www.google.com/search?q=https://info.slyinc.com/maintenance-checklist-for-a-better-baghouse-download-1%3F_gl%3D1%2A2r3v0r%2A_gcl_au%2ANDI3MjcwNS4xNzg2NjM1Nzky%2A_ga%2AMTM2NzA2ODE0NC4xNzI1NjQyNzE4%2A_ga_0G2M9CMRL1%2AczE3ODY6MzY3MzYkbzEkZzEkdDE3ODY6MzY5NTMkajI4JGwwJGgxMjY3ODczMTU5). Access inspection logs, essential terminology, and static pressure data charts to extend equipment performance and life. [Read More](https://www.slyinc.com/products/dry-dust-collector-filter-bags/) ## Let’s Design the Right Baghouse for Your Process Talk with one of our application engineers. [Request a Quote](https://www.slyinc.com/contact/request-a-quote/) --- ### [STJ/SBR – Square Series Pulse Jet Collectors](https://www.slyinc.com/products/dust-collectors/tubejet-baghouse-dust-collectors/stj-sbr-square-series-pulse-jet-collectors/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/11/Sly-STJ-cartridge-collector-hero.jpg "Sly-STJ-cartridge-collector-hero | Sly Air Pollution Control") # STJ/SBR – Square Series Pulse Jet Collectors **Top Bag or Side Bag Removal Designs.** ## Square Series TubeJet® --- Sly’s Square Series TubeJet dust collectors are available in top bag removal (STJ) and side bag removal (SBR). The TubeJet’s unique pulse pipe connection and rugged snap ring bag assembly make bag changes simple. Large weather proof doors on the collector’s roof provide easy access for inspection and maintenance. Specifications for STJ and SBR dust collector and filter receivers are as follows: - 50-200,000+ ACFM Capacities - 20” w.g. to 17” Hg design pressures - Full vacuum - ASME code stamped housings - Construction to 500°F design temperature ![STJ Tubejet Dust Collector](https://www.slyinc.com/wp-content/uploads/2024/11/STJ-Sly-Tubejet.jpg "STJ-Sly-Tubejet | Sly Air Pollution Control") #### Request a Quote [Contact Us](https://www.slyinc.com/contact/request-a-quote/) ### Features & *Benefits* - 50-200,000 ACFM capacities with 20” w.g. to 5 PSIG and higher ensures optimal air pollution control - Radial low velocity dual stage inlet with diffuser design decreases turbulence for more efficient cleaning - Wide range of flow capacities in a single, shop assembled module - Adjustable solid state timer fine tunes cleaning system for optimum pulse-cleaning - Versatile design handles high temperatures, pressures and corrosives - Snap-ring bag design provides a tight filter seal with high efficiency - Factory insulation prolongs bag life and helps to prevent damage Options --- - Side or top bag removal - Carbon, Stainless, or Alloy construction - Wide range of Fire Prevention Accessories - Configurable Hopper Slope/Discharge - Platform, Straight, or Perimeter Access - Hatch Tops - Factory Insulation ### STJ Top Bag Removal ![STJ-Dust-Collector-Top-Bag](https://www.slyinc.com/wp-content/uploads/2024/11/STJ-Dust-Collector-Top-Bag.jpg "STJ-Dust-Collector-Top-Bag | Sly Air Pollution Control") Filter bag changes require no tools with Sly pulse jet top bag removal collectors. The TubeJet’s unique tool-less pulse pipe connection and rugged snap ring bag assembly make it possible. Large weather proof doors on the collector’s roof allow easy access for inspection and maintenance. ### [SBR Side Bag Removal](https://www.slyinc.com/products/dust-collectors/tubejet-baghouse-dust-collectors/ctr-cbr-cylindrical-pulse-jet-collectors/) ![SBR-Dust-Collector-Side-Bag](https://www.slyinc.com/wp-content/uploads/2024/11/SBR-Dust-Collector-Side-Bag.jpg "SBR-Dust-Collector-Side-Bag | Sly Air Pollution Control") When headroom is tight, these collectors can fit where top removal units can’t. The quick access side door provides access to bags for change-outs. These are outstanding collectors for bin vent applications. **For a complete listing of standard features, benefits, and custom options [view our pdf brochure](https://www.slyinc.com/wp-content/uploads/2015/03/SBR-STJ-SlyTubeJet.pdf?__hstc=46213176.4e2d066813c0025d65f4052bea5179f4.1732583641980.1732684143192.1732759039958.5&__hssc=46213176.17.1732759039958&__hsfp=1408653334&_gl=1%2Aqwq2xq%2A_gcl_au%2AMTc4NzExMzE2MS4xNzI4NjEyMDMz%2A_ga%2AMTc3MTI2MDkwNi4xNzI4NjEyMDMz%2A_ga_0G2M9CMRL1%2AMTczMjc1OTAzOS40LjEuMTczMjc1OTk3NC4xMS4wLjI1NjExNjc0NA..).** ##### TubeJet: Square Series ![](https://www.slyinc.com/wp-content/uploads/2024/12/STJ-Screw-Conveyor-300x300.jpg) STJ Dust Capture With Screw Conveyor ![](https://www.slyinc.com/wp-content/uploads/2024/12/Drive-Through-Tubejet-Dust-Collector-300x300.jpg) Dust Collection Drive Through Loading ![](https://www.slyinc.com/wp-content/uploads/2024/12/STJ-TubeJet-Air-Pollution-Control-System-300x300.jpg) TubeJet Air Pollution Control System ![]() STJ Dust Capture With Screw Conveyor ![]() Dust Collection Drive Through Loading ![]() TubeJet Air Pollution Control System ##### Downloads --- - [STJ-501-1- STJ-36 through 108](https://www.slyinc.com/wp-content/uploads/2024/08/STJ-501-1-STJ-36-through-108.pdf) - [STJ-501- STJ-128 and -11 Series](https://www.slyinc.com/wp-content/uploads/2024/09/STJ-501-STJ-128-and-11-Series.pdf) - [STJ-503-1- STJ-17 Series with Hatch Top and Pyramid Hopper](https://www.slyinc.com/wp-content/uploads/2024/09/STJ-503-1-STJ-17-Series-with-Hatch-Top-and-Pyramid-Hopper.pdf) - [ST](https://www.slyinc.com/pdfs/STJ-Top-Load/STJ-503-2-STJ-17-Series-with-Walk-in-Plenum-and-Pyramid-Hopper.pdf)[J-503-2- STJ-17 Series with Walk-in Plenum and Pyramid Hopper](https://www.slyinc.com/wp-content/uploads/2024/08/STJ-503-2-_STJ-17_Series_with_Walk-in_Plenum_and_Pyramid_Hopper.pdf) - [STJ-503-3- STJ-17 Series with Hatch Top and Trough Hopper](https://www.slyinc.com/wp-content/uploads/2024/08/STJ-503-3-_STJ-17_Series_with_Hatch_Top_and_Trough_Hopper.pdf) - [STJ-503-4- STJ-17 Series with Walk-in Plenum and Trough Hopper](https://www.slyinc.com/wp-content/uploads/2024/08/STJ-503-4-_STJ-17_Series_with_Walk-in_Plenum_and_Trough_Hopper.pdf) - [STJ-505-1- STJ-15 Series with Hatch Top and Pyramid Hopper](https://www.slyinc.com/wp-content/uploads/2024/08/STJ-505-1-_STJ-15_Series_with_Hatch_Top_and_Pyramid_Hopper.pdf) - [STJ-505-2- STJ-15 Series with Walk-in Plenum and Pyramid Hopper](https://www.slyinc.com/wp-content/uploads/2024/08/STJ-505-2-_STJ-15_Series_with_Walk-in_Plenum_and_Pyramid_Hopper.pdf) - [STJ-505-3- STJ-15 Series with Hatch Top and Trough Hopper](https://www.slyinc.com/pdfs/STJ-Top-Load/STJ-505-3-STJ-15-Series-with-Hatch-Top-and-Trough-Hopper.pdf) - [STJ-505-4- STJ-15 Series with Walk-in Plenum and Trough Hopper](https://www.slyinc.com/pdfs/STJ-Top-Load/STJ-505-4-STJ-15-Series-with-Walk-in-Plenum-and-Trough-Hopper.pdf) - [SBR-601-1- SBR-22 through 108](https://www.slyinc.com/pdfs/SBR-Bottom-Load/SBR-601-1-SBR-22-through-108.pdf) - [SBR-601- SBR-128 & 811 through 1711](https://www.slyinc.com/wp-content/uploads/2024/09/SBR-601-SBR-128-811-through-1711.pdf) - [SBR-601-PV- Standard Bin Vents](https://www.slyinc.com/wp-content/uploads/2024/08/SBR-601-PV-Standard-Bin-Vents.pdf) - [Baghouse Maintenance Checklist](https://info.slyinc.com/maintenance-checklist-for-a-better-baghouse-download-1?_gl=1%2A1i4qasg%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA0NDEzMi4xNC4xLjE3MzcwNDYxNDUuMTUuMC4xOTkxNTIzOTE5) --- ### [Scrubber Parts](https://www.slyinc.com/products/industrial-wet-scrubbers/scrubber-parts/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![wet-scrubber-impinjet-venturi-parts-hero](https://www.slyinc.com/wp-content/uploads/2024/11/wet-scrubber-impinjet-venturi-parts-hero.jpg "wet-scrubber-impinjet-venturi-parts-hero | Sly Air Pollution Control") # Scrubber Parts **Deliver Uptime with Sly Parts.** ## Wet Scrubber Parts --- SLY understands that timely access to genuine spare parts is essential for maintaining the reliability and performance of your equipment. Our experts with the Aftermarket Sales team are committed to providing prompt, reliable ordering to ensure minimal downtime and keep your operations performing as they should. Our team can process your order any time of the day, and we have inventory readily available for quick delivery. Most orders are processed within 24 hours. Contact us below. ### Replacement Parts #### Impinjet Parts - Baffle Plates - Mist Eliminators - Nozzles - Flow Meters & other Instrumentation - Fan/Blower Parts #### Venturi & Separator Parts - Spray Bars - Mist Eliminators - Nozzles - Flow Meters & other Instrumentation - Fan/Blower Parts ![impingement plate scrubber](https://www.slyinc.com/wp-content/uploads/2024/11/impingement-plate-scrubber.jpg "impingement-plate-scrubber | Sly Air Pollution Control") **Scrubber Impingement Plate** #### Request a Parts Quote [Contact Us](https://www.slyinc.com/contact/request-a-quote/) ###### Featured Resources [![](https://www.slyinc.com/wp-content/uploads/2024/09/sly-wet-scrubber-thumbnail.png "sly-wet-scrubber-thumbnail | Sly Air Pollution Control")](https://info.slyinc.com/wet-scrubber-guide?_gl=1%2A1sxvtd4%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTc2NTkuNjAuMC40MTU4MDM1MTE.) #### Getting Started with Wet Scrubbers The first step to getting the best wet scrubbing system possible is knowing what your application needs. This resource details everything you need to know about wet scrubbers and how to make the right selection for your facility. [Read More](https://info.slyinc.com/wet-scrubber-guide?_gl=1%2A1sxvtd4%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTc2NTkuNjAuMC40MTU4MDM1MTE.) [![](https://www.slyinc.com/wp-content/uploads/2024/09/SLY_WetScrubberBuyersGuideCover.png "SLY_WetScrubberBuyersGuideCover | Sly Air Pollution Control")](https://info.slyinc.com/wet-scrubber-buyers-guide-1?_gl=1%2Alsg8vf%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTc2NTkuNjAuMC40MTU4MDM1MTE.) #### Wet Scrubbers Buyer’s Guide Wet scrubbers can tackle tough air pollution control challenges that dry dust collectors can’t. Certain scenarios all but demand a wet scrubber. But how you do decide what wet scrubber is best for you and what supplier to use? [Read More](https://info.slyinc.com/wet-scrubber-buyers-guide-1?_gl=1%2Alsg8vf%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTc2NTkuNjAuMC40MTU4MDM1MTE.) [![](https://www.slyinc.com/wp-content/uploads/2024/08/wetscrubberhandbook.webp "wetscrubberhandbook | Sly Air Pollution Control")](https://info.slyinc.com/wet-scrubber-handbook-lp-1?_gl=1%2Alsg8vf%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTc2NTkuNjAuMC40MTU4MDM1MTE.) #### Wet Scrubber Handbook Wet scrubbers are unique pieces of dust collection equipment, allowing businesses to improve their air quality through the impingement process. Using a scrubbing liquid to remove harmful pollutants from your air, wet scrubbers are perfect for applications with light dust loadings, wet or sticky particulates, vapor and gases, and combustible dust. To help you get the perfect wet scrubber for your facility’s needs, the experts at Sly created our new Wet Scrubber Handbook. This info-packed handbook contains helpful information regarding all of your wet scrubber needs. [Read More](https://info.slyinc.com/wet-scrubber-handbook-lp-1?_gl=1%2Alsg8vf%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTc2NTkuNjAuMC40MTU4MDM1MTE.) ## **Wet Scrubber Parts – FAQs** **What replacement parts are commonly needed for wet scrubbers?** Common scrubber replacement parts include nozzles, packing media, mist eliminators, pumps, fans, spray headers, valves, and instrumentation components. ****How often should wet scrubber components be replaced?**** Replacement schedules depend on operating conditions, chemical exposure, particulate loading, and maintenance practices. ****Can replacement parts improve scrubber performance?**** Yes. Replacing worn nozzles, mist eliminators, or packing media can restore airflow, improve contaminant removal efficiency, and reduce pressure drop. ****Does Sly provide parts for non-Sly scrubbers?**** Yes. Sly can often supply replacement components and retrofit solutions for third-party wet scrubber systems. ****Why is preventative maintenance important for wet scrubbers?**** Routine maintenance helps prevent plugging, corrosion, reduced efficiency, and unexpected downtime while extending equipment life. --- ### [FRP Wet Scrubbers](https://www.slyinc.com/products/industrial-wet-scrubbers/frp-wet-scrubbers/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/09/18frp-hero.png "(18)frp hero | Sly Air Pollution Control") # FRP Wet Scrubbers **We Customize and Tailor Each Scrubber**. ## Fiberglass Reinforced Plastic (FRP) Wet Scrubber Systems --- Fiberglass Reinforced Plastic (FRP) wet scrubber systems efficiently capture and neutralize hazardous gases and particulates from industrial exhaust gases by passing the contaminated airstream through a specially designed chamber where the gases are absorbed and neutralized, and particulates are collected. A wet scrubber relies on a liquid-based system to capture the particulate matter and absorb gases from the airstream flowing through it. Some FRP scrubbers recirculate water for this purpose, while others leverage acid or base solutions to adjust the pH, facilitating the absorption of specific gases in the air. ![](https://www.slyinc.com/wp-content/uploads/2024/08/Packed-Tower-9-ft-diameter-scaled-1.jpg "Packed-Tower-9-ft-diameter-scaled-1 | Sly Air Pollution Control") ![](https://www.slyinc.com/wp-content/uploads/2025/01/fiberglass-reinforced-scrubber-texture.png "fiberglass-reinforced-scrubber-texture | Sly Air Pollution Control") These scrubbers provide an integrated solution for contaminant removal, making them a cost-effective and space-saving choice for air pollution control. We customize and tailor each scrubber to meet the specific application requirements of various industrial facilities. Design flexibility makes this type of scrubber a versatile option. Packed tower scrubbers are limited to around 60,000 cfm, Venturi scrubbers have a limit of 76,000 cfm, and an ImpinJet scrubber is limited to 76,950 cfm. #### Request a Quote [Contact Us](https://www.slyinc.com/contact/request-a-quote/) ### Features & *Benefits* - Superior corrosion resistance, allowing exposure to a wide range of corrosive and hazardous chemicals and prevents damage and deterioration - Light-weight frame eases transportation, installation, and handling during maintenance - Budget-friendly while providing excellent performance in corrosive, wet environments - Fiberglass reinforcement helps maintain the dimensional stability, making them less prone to warping or distortion, for longer-lasting, more consistent performance - Composite nature offers some degree of thermal insulation compared to conductive materials - Easily customized according to shape and size, offering design flexibility - Inherently UV-resistant for longer duration in outdoors - The topcoat helps maintain the scrubber’s surface, to prevent rust and resist contaminant buildup Options --- - Multiple resin options for coating - Can support 1psig, or 27.7 inches of water - Option to recirculate water - Can leverage acid or base solutions to adjust pH - Customizable to fit nearly any application ##### Contaminant Removal: FRP Wet Scrubbers ![](https://www.slyinc.com/wp-content/uploads/2024/09/18frp-hero-300x100.png) FRP Coating ![](https://www.slyinc.com/wp-content/uploads/2024/12/frp-eductor-packed-tower-300x300.jpg) FRP Eductor ![](https://www.slyinc.com/wp-content/uploads/2024/08/IMG_1781-169x300.jpg) FRP Packed Tower ![]() FRP Coating ![]() FRP Eductor ![]() FRP Packed Tower ### FRP Scrubber Limitations: - **Gas temperature:** FRP scrubbers are generally limited to an inlet gas temperature of 220°F, although upstream close-coupled evaporative quenches can be added to accommodate greater temperatures. - **Gas pressure:** FRP scrubbers are generally limited to 1 psig, or 27.7 inches of water, pressure or vacuum, although design considerations can be made to accommodate pressure conditions from full vacuum to 15 psig. - **Erosion:** FRP scrubbers may experience erosion and accelerated degradation when exposed to abrasive particulates. ###### Featured Resources [![](https://www.slyinc.com/wp-content/uploads/2024/09/frp-wet-scrubber-wp-mockup.webp "frp-wet-scrubber-wp-mockup | Sly Air Pollution Control")](https://info.slyinc.com/wetscrubberfrpguide?_gl=1%2A92o4bf%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTc2NTkuNjAuMC40MTU4MDM1MTE.) #### Fiberglass Reinforced Plastic (FRP) Wet Scrubber White Paper Companies that fail to comply with air quality regulations can face severe consequences including fines, legal action and reputational damage. Wet scrubbers, particularly those fabricated of fiberglass-reinforced plastic (FRP), offer an efficient and cost-effective solution for controlling industrial emissions. [Read More](https://info.slyinc.com/wetscrubberfrpguide?_gl=1%2A92o4bf%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTc2NTkuNjAuMC40MTU4MDM1MTE.) [![](https://www.slyinc.com/wp-content/uploads/2024/09/SLY_WetScrubberBuyersGuideCover.png "SLY_WetScrubberBuyersGuideCover | Sly Air Pollution Control")](https://info.slyinc.com/wet-scrubber-buyers-guide-1?_gl=1%2Alsg8vf%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTc2NTkuNjAuMC40MTU4MDM1MTE.) #### Wet Scrubbers Buyer’s Guide Wet scrubbers can tackle tough air pollution control challenges that dry dust collectors can’t. Certain scenarios all but demand a wet scrubber. But how you do decide what wet scrubber is best for you and what supplier to use? [Read More](https://info.slyinc.com/wet-scrubber-buyers-guide-1?_gl=1%2Alsg8vf%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTc2NTkuNjAuMC40MTU4MDM1MTE.) [![](https://www.slyinc.com/wp-content/uploads/2024/08/wetscrubberhandbook.webp "wetscrubberhandbook | Sly Air Pollution Control")](https://info.slyinc.com/wet-scrubber-handbook-lp-1?_gl=1%2Alsg8vf%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTc2NTkuNjAuMC40MTU4MDM1MTE.) #### Wet Scrubber Handbook Wet scrubbers are unique pieces of dust collection equipment, allowing businesses to improve their air quality through the impingement process. Using a scrubbing liquid to remove harmful pollutants from your air, wet scrubbers are perfect for applications with light dust loadings, wet or sticky particulates, vapor and gases, and combustible dust. To help you get the perfect wet scrubber for your facility’s needs, the experts at Sly created our new Wet Scrubber Handbook. This info-packed handbook contains helpful information regarding all of your wet scrubber needs. [Read More](https://info.slyinc.com/wet-scrubber-handbook-lp-1?_gl=1%2Alsg8vf%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTc2NTkuNjAuMC40MTU4MDM1MTE.) ##### Downloads --- - [Download the Fiberglass Reinforced Plastic (FRP) Wet Scrubber White Paper](https://info.slyinc.com/wetscrubberfrpguide) - [Download the Wet Scrubber Brochure](https://www.slyinc.com/pdfs/WetScrubber.pdf) - [Download the Eductor Venturi Scrubber Brochure](https://www.slyinc.com/wp-content/uploads/2018/03/WS-500-Eductor.pdf) - [Application Examples](https://www.slyinc.com/products/industrial-wet-scrubbers/eductor-wet-scrubber/eductor-wet-scrubber-application-examples/) [Need Other Equipment?](#) ## **FRP Wet Scrubbers – FAQs** **What does FRP stand for in wet scrubbers?** FRP stands for Fiberglass Reinforced Plastic, a corrosion-resistant material commonly used in wet scrubber construction. ****Why are FRP scrubbers used in corrosive applications?**** FRP resists many chemicals, acids, and harsh environmental conditions while remaining lightweight and durable. ****What industries commonly use FRP wet scrubbers?**** FRP scrubbers are often used in chemical processing, semiconductor manufacturing, wastewater treatment, metal finishing, and fertilizer production. ****Are FRP scrubbers customizable?**** Yes. FRP scrubbers can be engineered in various shapes, sizes, airflow capacities, and internal configurations to match specific process requirements. ****What are the advantages of FRP compared to stainless steel?**** FRP often provides better corrosion resistance and lower weight than stainless steel in highly aggressive chemical environments. --- ### [Packed Tower Wet Scrubber](https://www.slyinc.com/products/industrial-wet-scrubbers/packed-tower-wet-scrubber/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![packed-tower-hero image](https://www.slyinc.com/wp-content/uploads/2024/11/packed-tower-hero.jpg "packed-tower-hero | Sly Air Pollution Control") # Packed Tower Wet Scrubber **Designed to Handle a Wide Range of Airflows**. ## How Packed Tower Scrubbers Work --- Packed tower scrubbers (also referred to as packed bed or packed column scrubbers) are designed for chemical scrubbing of contaminants from gas streams. Internal packing in the scrubber housing provides a large wetted surface area to induce intimate contact between the contaminated gas and the scrubbing liquid. The contaminant is then absorbed into or reacted with the scrubbing liquid. Recirculation of the scrubbing liquid, which may contain caustic or acid scrubbing agents, is often required to achieve the desired outlet emissions. ![](https://www.slyinc.com/wp-content/uploads/2024/08/Packed_Tower.png "Packed_Tower | Sly Air Pollution Control") ### SLY’s Packed Tower Scrubber Design Sly’s custom-designed and fabricated packed tower scrubbers are engineered for select applications for optimum tower diameter, packing depth, recirculation flow rate, and the appropriate mist eliminator style. Packed tower scrubbers can be designed to handle a wide range of airflows and can be constructed from a variety of materials. When designed correctly, packed tower systems can successfully ventilate harmful, toxic gas streams and exhaust clean air back into the atmosphere. #### Request a Quote [Contact Us](https://www.slyinc.com/contact/request-a-quote/) ### Features & *Benefits* - Commonly used to remove SO2, NCI, NH3, H2S and other gasses to keep you compliant and your air cleaner - Stainless steel, FRP, or high alloy construction to fit any application - Chemical feed system enhances performance - Optional exhaust fan keeps consistent scrubbing rate - Mist eliminator help control particle sizes and mass flow of the gas stream, ensuring maximum efficiency - Optional instrumentation and controls allows for adaptability, prolonged equipment life and improved efficiency and safety. Options --- - High surface area, structured, random packing materials all available - Spray nozzles, flooded bed and more options for liquid distribution systems - Multiple gas flow configurations - Optional recirculation of liquid to reduce water usage ##### Packed Tower Wet Scrubbing ![](https://www.slyinc.com/wp-content/uploads/2024/09/wet-packed-tower.jpg) FRP Packed Tower ![](https://www.slyinc.com/wp-content/uploads/2024/08/IMG_1781-169x300.jpg) FRP Packed Tower ![](https://www.slyinc.com/wp-content/uploads/2024/08/DSC04379-1-214x300.jpg) Controls ![]() FRP Packed Tower ![]() FRP Packed Tower ![]() Controls ###### Featured Resources [![](https://www.slyinc.com/wp-content/uploads/2024/09/sly-wet-scrubber-thumbnail.png "sly-wet-scrubber-thumbnail | Sly Air Pollution Control")](https://info.slyinc.com/wet-scrubber-guide?_gl=1%2Aezgztv%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTc0NzEuNDYuMC40MTU4MDM1MTE.) #### Getting Started with Wet Scrubbers The first step to getting the best wet scrubbing system possible is knowing what your application needs. This resource details everything you need to know about wet scrubbers and how to make the right selection for your facility. [Read More](https://info.slyinc.com/wet-scrubber-guide?_gl=1%2Aezgztv%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTc0NzEuNDYuMC40MTU4MDM1MTE.) [![](https://www.slyinc.com/wp-content/uploads/2024/09/SLY_WetScrubberBuyersGuideCover.png "SLY_WetScrubberBuyersGuideCover | Sly Air Pollution Control")](https://info.slyinc.com/wet-scrubber-buyers-guide-1?_gl=1%2Aezgztv%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTc0NzEuNDYuMC40MTU4MDM1MTE.) #### Wet Scrubbers Buyer’s Guide Wet scrubbers can tackle tough air pollution control challenges that dry dust collectors can’t. Certain scenarios all but demand a wet scrubber. But how you do decide what wet scrubber is best for you and what supplier to use? [Read More](https://info.slyinc.com/wet-scrubber-buyers-guide-1?_gl=1%2Aezgztv%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTc0NzEuNDYuMC40MTU4MDM1MTE.) [![](https://www.slyinc.com/wp-content/uploads/2024/08/wetscrubberhandbook.webp "wetscrubberhandbook | Sly Air Pollution Control")](https://info.slyinc.com/wet-scrubber-handbook-lp-1?_gl=1%2Aohg383%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTc0NzEuNDYuMC40MTU4MDM1MTE.) #### Wet Scrubber Handbook Wet scrubbers are unique pieces of dust collection equipment, allowing businesses to improve their air quality through the impingement process. Using a scrubbing liquid to remove harmful pollutants from your air, wet scrubbers are perfect for applications with light dust loadings, wet or sticky particulates, vapor and gases, and combustible dust. To help you get the perfect wet scrubber for your facility’s needs, the experts at Sly created our new Wet Scrubber Handbook. This info-packed handbook contains helpful information regarding all of your wet scrubber needs. [Read More](https://info.slyinc.com/wet-scrubber-handbook-lp-1?_gl=1%2Aohg383%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTc0NzEuNDYuMC40MTU4MDM1MTE.) ##### Downloads --- - [Download the Wet Scrubber Brochure](https://www.slyinc.com/pdfs/WetScrubber.pdf) - [Packed Tower Brochure](https://www.slyinc.com/wp-content/uploads/2025/01/Packed-Tower-Brochure-Web.pdf) ## **Packed Tower Wet Scrubber – FAQs** **What is a packed tower wet scrubber used for?** Packed tower scrubbers are designed primarily for gas absorption and are commonly used to remove acid gases, chemical vapors, odors, and VOCs from industrial exhaust streams. ****How does a packed tower scrubber work?**** Contaminated gas flows upward through the packing material, while the scrubbing liquid flows downward. The packing’s large surface area promotes efficient gas absorption. ****What industries commonly use packed tower scrubbers?**** Packed towers are widely used in chemical manufacturing, semiconductor production, wastewater treatment, metals processing, and pharmaceutical applications. ****Can packed tower scrubbers remove acid gases?**** Yes. Packed towers effectively remove acid gases such as HCl, SO₂, and HF, as well as other soluble contaminants. ****What materials are used to construct packed tower scrubbers?**** Packed towers are commonly fabricated from FRP, stainless steel, PVC, CPVC, and other corrosion-resistant materials, depending on the process chemistry. --- ### [Eductor Wet Scrubber](https://www.slyinc.com/products/industrial-wet-scrubbers/eductor-wet-scrubber/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![eductor-wet-scrubber-hero](https://www.slyinc.com/wp-content/uploads/2024/09/eductor-wet-scrubber-hero.jpg "eductor-wet-scrubber-hero | Sly Air Pollution Control") # Eductor Wet Scrubber **Custom-Engineered Scrubbers.** ## Efficient Gas & Particulate Removal Solutions --- Eductor scrubbers are designed to remove soluble gases and particulates by inducing a gas flow using high-pressure liquid focused into a venturi throat. This eliminates the need for a separate exhaust fan or blower to transport the contaminant-laden airstream to the filtration device. Additionally, these scrubbers can be used for direct-contact condensation. Each scrubber is custom-engineered to meet specific performance requirements. Its design flexibility makes it very versatile. It can easily be staged with other collection devices, such as impingement plate scrubbers or additional eductor scrubbers. ![eductor-gas-scrubber-Sly](https://www.slyinc.com/wp-content/uploads/2024/11/eductor-gas-scrubber-Sly.jpg "eductor-gas-scrubber-Sly | Sly Air Pollution Control") ![](https://www.slyinc.com/wp-content/uploads/2024/08/Educt-3D.jpg "Educt-3D | Sly Air Pollution Control") Do you have a small application that needs to be ventilated but does not require a permitted piece of capital equipment? A Sly Eductor Scrubber could be the perfect solution for your application. Scrubbers and separation tanks can handle gas flows up to 10,000 CFM. #### Request a Quote [Contact Us](https://www.slyinc.com/contact/request-a-quote/) ### Features & *Benefits* - Easily staged with other collection devices - Each piece custom-engineered to meet specific requirements - Great for small applications to ventilate without permitted capital equipment - Well-suited for collecting sticky and/or gummy particulate - Available to handle gas flows up to 10,000 CFM Options --- - Adjustable nozzle options ensure high efficiency - Variable throat sizes based on required gas flow rate - Multiple options for spray nozzles or bars - Optional recirculation of liquid to reduce water usage ##### Eductor Gas & Particulate Removal ![](https://www.slyinc.com/wp-content/uploads/2024/12/Eductor-Wet-Scrubbers-Sly-300x300.jpg) Eductor for Lab Testing ![](https://www.slyinc.com/wp-content/uploads/2024/12/redoring-eductor-scrubber-300x300.jpg) Eductor Wet Scrubber Rendering ![](https://www.slyinc.com/wp-content/uploads/2024/12/eductor-scrubber-shutoff-piping-300x300.jpg) Eductor Scrubber Piping ![]() Eductor for Lab Testing ![]() Eductor Wet Scrubber Rendering ![]() Eductor Scrubber Piping ###### Featured Resources [![](https://www.slyinc.com/wp-content/uploads/2024/09/sly-wet-scrubber-thumbnail.png "sly-wet-scrubber-thumbnail | Sly Air Pollution Control")](https://info.slyinc.com/wet-scrubber-guide?_gl=1%2Aezgztv%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTc0NzEuNDYuMC40MTU4MDM1MTE.) #### Getting Started with Wet Scrubbers The first step to getting the best wet scrubbing system possible is knowing what your application needs. This resource details everything you need to know about wet scrubbers and how to make the right selection for your facility. [Read More](https://info.slyinc.com/wet-scrubber-guide?_gl=1%2Aezgztv%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTc0NzEuNDYuMC40MTU4MDM1MTE.) [![](https://www.slyinc.com/wp-content/uploads/2024/09/SLY_WetScrubberBuyersGuideCover.png "SLY_WetScrubberBuyersGuideCover | Sly Air Pollution Control")](https://info.slyinc.com/wet-scrubber-buyers-guide-1?_gl=1%2Aezgztv%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTc0NzEuNDYuMC40MTU4MDM1MTE.) #### Wet Scrubbers Buyer’s Guide Wet scrubbers can tackle tough air pollution control challenges that dry dust collectors can’t. Certain scenarios all but demand a wet scrubber. But how you do decide what wet scrubber is best for you and what supplier to use? [Read More](https://info.slyinc.com/wet-scrubber-buyers-guide-1?_gl=1%2Aezgztv%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTc0NzEuNDYuMC40MTU4MDM1MTE.) [![](https://www.slyinc.com/wp-content/uploads/2024/08/wetscrubberhandbook.webp "wetscrubberhandbook | Sly Air Pollution Control")](https://info.slyinc.com/wet-scrubber-handbook-lp-1?_gl=1%2Aohg383%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTc0NzEuNDYuMC40MTU4MDM1MTE.) #### Wet Scrubber Handbook Wet scrubbers are unique pieces of dust collection equipment, allowing businesses to improve their air quality through the impingement process. Using a scrubbing liquid to remove harmful pollutants from your air, wet scrubbers are perfect for applications with light dust loadings, wet or sticky particulates, vapor and gases, and combustible dust. To help you get the perfect wet scrubber for your facility’s needs, the experts at Sly created our new Wet Scrubber Handbook. This info-packed handbook contains helpful information regarding all of your wet scrubber needs. [Read More](https://info.slyinc.com/wet-scrubber-handbook-lp-1?_gl=1%2Aohg383%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTc0NzEuNDYuMC40MTU4MDM1MTE.) ##### Downloads --- - [Download the Wet Scrubber Brochure](https://www.slyinc.com/pdfs/WetScrubber.pdf) - [Download the Eductor Venturi Scrubber Brochure](https://www.slyinc.com/wp-content/uploads/2018/03/WS-500-Eductor.pdf) - [Application Examples](https://www.slyinc.com/products/industrial-wet-scrubbers/eductor-wet-scrubber/eductor-wet-scrubber-application-examples/) ## **Eductor Wet Scrubber – FAQs** **What is an eductor wet scrubber?** An eductor wet scrubber uses liquid pressure to induce airflow and remove contaminants from exhaust streams, eliminating the need for a mechanical fan in certain applications. ****What types of contaminants can eductor scrubbers remove?**** Eductor scrubbers can remove particulate, fumes, vapors, and soluble gases from industrial process exhaust streams. ****What are the benefits of an eductor scrubber design?**** These systems have fewer moving parts, compact footprints, and reliable performance in corrosive or hazardous environments. ****When are eductor scrubbers commonly used?**** Eductor scrubbers are often used in chemical processing, laboratory exhaust, tank venting, and odor control applications. ****Can eductor scrubbers handle corrosive gases?**** Yes. Eductor scrubbers are often constructed from corrosion-resistant materials to withstand harsh chemical environments. --- ### [Venturi Wet Scrubber](https://www.slyinc.com/products/industrial-wet-scrubbers/venturi-wet-scrubber/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/09/venturi-hero.jpg "venturi hero | Sly Air Pollution Control") # Venturi Wet Scrubber **Simple in Design, Yet Highly Efficient**. ## Sly Venturi Scrubber --- The Sly Venturi scrubber efficiently collects fine particulate and mists. Scrubbing liquid is atomized into fine droplets that entrap particles. Adjustable throats for efficiency optimization are standard—capacities to 76,000+ CFM per unit. The Sly Venturi Scrubber serves the industry in several ways. It removes pollutants present in process gas streams, including hazardous and nuisance dust, fumes, and mists from stack gases. By cleaning process gas streams to remove oils, dust, and other particulates, this scrubber allows the industry to recycle these gases as fuels or process raw materials. Finally, the Sly Venturi Scrubber allows the reclaim of valuable materials, which can lead to significant process savings. ![](https://www.slyinc.com/wp-content/uploads/2024/08/20180509_184555.jpg "20180509_184555 | Sly Air Pollution Control") ### Venturi Scrubber Principles: How They Work ![](https://www.slyinc.com/wp-content/uploads/2024/08/image001.jpg "image001 | Sly Air Pollution Control") The Venturi Scrubber uses the differential between high-velocity gases and free-flowing water to create droplets that entrap contaminants, hold them in suspension, and deliver them as a highly concentrated slurry. The Sly Venturi Scrubber offers more advantages in separating and recovering liquid mists and ultra-fine particulates than other gas cleaning methods. Simple in design yet highly efficient, this Sly Venturi Scrubber incorporates features calculated to maximize collection efficiency while minimizing operating and maintenance costs. An adjustable pressure drop provision and energy regain feature are critical in rising energy costs, combining to reduce power consumption and operating costs. #### Request a Quote [Contact Us](https://www.slyinc.com/contact/request-a-quote/) ### Features & *Benefits* - Can help to recycle gases as fuel or process raw materials - Reclaim valuable materials- resulting in significant savings - Minimizes operating costs - Adjustable pressure drop provision - Reduces power consumption Options --- - Easily adjustable throat permits setting pressure for maximum efficiency. Can be fine-tuned to application while scrubber is running. Throat Damper blased are readily replaceable. - Variable-spin damper in separator maintains proper velocity for collection of fine droplets. - Removable scrubbing liquid piping- no nozzles to wear or plug. - Access door permits inspection of flooded elbow and spin damper. - Simple open design has low potential for buildup and pluggage. - Temperature and corrosion resistant construction is available. - Can employ a high concentration slurry as scrubbing liquid ##### Sly Venturi Wet Scrubbers ![](https://www.slyinc.com/wp-content/uploads/2024/12/Sly-Venturi-Industrial-Use-Scrubber-300x300.jpg) Collect Fine Particulate & Mists ![](https://www.slyinc.com/wp-content/uploads/2024/12/Sly-Pre-Piped-Venturi-Rendering-300x300.jpg) Pre-piped Venturi Scrubber ![](https://www.slyinc.com/wp-content/uploads/2024/12/Venturi-Scrubber-Piping-300x300.jpg) Venturi Wet Scrubber Piping ![]() Collect Fine Particulate & Mists ![]() Pre-piped Venturi Scrubber ![]() Venturi Wet Scrubber Piping ##### Venturi Scrubber Sizing & Dimensions SLY, LLC.’s Venturi wet scrubbers are available in a variety of sizes and dimensions to suit your specific application. Use this diagram and table to find the specs and sizing you need, or [contact us](https://www.slyinc.com/contact/) with any questions you may have. We also offer [OEM manufacturing](https://www.slyinc.com/oem/) and custom solutions to suit any project! ![](https://www.slyinc.com/wp-content/uploads/2024/08/venturi-scrubber-dimensions-250x300-1.png "venturi-scrubber-dimensions-250x300-1 | Sly Air Pollution Control") | | Nominal Capacity Sat. CFM | Inlet & Outlet A | Sep. Dia. B | Sep. C1 | Vent C2 | Vent C3 | Sep C4 | Overall Width D | Venturi Width E | Sep. Cone F | Drain Pipe G | **Water** **Pipe H** | Venturi Depth J | |---|---|---|---|---|---|---|---|---|---|---|---|---|---| | **0.5** | 1,500/2,600 | 10×10 | 2′-2″ | 4′-4″ | 5′-8″ | 6′-0″ | 5′-2″ | 5′-6″ | 2′-4″ | 10″ | 2″ | 2″ | 11″ | | **1** | 2,600/3,600 | 13×13 | 3′-8″ | 6′-6″ | 6′-6″ | 7′-3″ | 7′-10″ | 6′-8″ | 2′-4″ | 1′-4″ | 3″ | 2″ | 1′-5″ | | **2** | 3,600/4,700 | 15×15 | 4′-1″ | 7′-2″ | 6′-9″ | 7′-7″ | 8′-7″ | 7′-3″ | 2′-6″ | 1′-5″ | 4″ | 2″ | 1′-5″ | | **3** | 4,700/6,300 | 17×17 | 4′-8″ | 8′-2″ | 7′-3″ | 8′-3″ | 9′-9″ | 8′ | 2′-11″ | 1′-7″ | 4″ | 2″ | 1′-9″ | | **4** | 6,300/8,500 | 20×20 | 5′-3″ | 9′-1″ | 7′-9″ | 8′-11″ | 10′-10″ | 8′-11″ | 3′-2″ | 1′-9″ | 4″ | 2″ | 1′-9″ | | **5** | 8,500/11,500 | 23×23 | 5′-11″ | 10′-4″ | 8′-10″ | 10′-2″ | 12′-4″ | 9′-11″ | 3′-7″ | 2′ | 6″ | 3″ | 2′-4″ | | **6** | 11,500/15,000 | 26×26 | 6′-7″ | 12′-1″ | 9′-7″ | 11′-1″ | 14′-3″ | 11′ | 3′-11″ | 2′-2″ | 6″ | 3″ | 2′-4″ | | **7** | 15,000/20,000 | 30×30 | 7′-5″ | 14′-1″ | 11′-4″ | 13′-1″ | 16′-6″ | 12′-6″ | 4′-9″ | 2′-5″ | 6″ | 4″ | 3′-1″ | | **8** | 20,000/27,000 | 35×35 | 8′-4″ | 16′-5″ | 11′-11″ | 14′-2″ | 19′-3″ | 13′-8″ | 5′-1″ | 2′-10″ | 8″ | 4″ | 3′-1″ | | **9** | 27,000/36,000 | 40×40 | 9′-4″ | 19′-0″ | 14′-7″ | 16′-11″ | 21′-11″ | 15′-8″ | 6′-1″ | 2′-11″ | 8″ | 4″ | 4′-5″ | | **10** | 36,000/48,000 | 46×46 | 10′-6″ | 22′-1″ | 15′-4″ | 18′-1″ | 25′-5″ | 17′-3″ | 6′-6″ | 3′-4″ | 10″ | 6″ | 4′-5″ | | **11** | 48,000/60,000 | 52×52 | 11′-10″ | 25′-7″ | 17′-6″ | 20′-7″ | 29′-3″ | 19′-4″ | 7′-5″ | 3′-8″ | 10″ | 6″ | 5′-10″ | | **12** | 60,000/76,000 | 58×58 | 13′-4″ | 28′-5″ | 17′-7″ | 20′-9″ | 32′-7″ | 21′-1″ | 7′-5″ | 4′-2″ | 12″ | 6″ | 6′-6″ | ###### Featured Resources [![](https://www.slyinc.com/wp-content/uploads/2024/09/sly-wet-scrubber-thumbnail.png "sly-wet-scrubber-thumbnail | Sly Air Pollution Control")](https://info.slyinc.com/wet-scrubber-guide?_gl=1%2A180h04n%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTY2MjguMzIuMC40MTU4MDM1MTE.) #### Getting Started with Wet Scrubbers The first step to getting the best wet scrubbing system possible is knowing what your application needs. This resource details everything you need to know about wet scrubbers and how to make the right selection for your facility. [Read More](https://info.slyinc.com/wet-scrubber-guide?_gl=1%2A180h04n%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTY2MjguMzIuMC40MTU4MDM1MTE.) [![](https://www.slyinc.com/wp-content/uploads/2024/09/SLY_WetScrubberBuyersGuideCover.png "SLY_WetScrubberBuyersGuideCover | Sly Air Pollution Control")](https://info.slyinc.com/wet-scrubber-buyers-guide-1?_gl=1%2A1urevvb%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTY2MjguMzIuMC40MTU4MDM1MTE.) #### Wet Scrubbers Buyer’s Guide Wet scrubbers can tackle tough air pollution control challenges that dry dust collectors can’t. Certain scenarios all but demand a wet scrubber. But how you do decide what wet scrubber is best for you and what supplier to use? [Read More](https://info.slyinc.com/wet-scrubber-buyers-guide-1?_gl=1%2A1urevvb%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTY2MjguMzIuMC40MTU4MDM1MTE.) [![](https://www.slyinc.com/wp-content/uploads/2024/08/wetscrubberhandbook.webp "wetscrubberhandbook | Sly Air Pollution Control")](https://info.slyinc.com/wet-scrubber-handbook-lp-1?_gl=1%2Aijql53%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTY2MjguMzIuMC40MTU4MDM1MTE.) #### Wet Scrubber Handbook Wet scrubbers are unique pieces of dust collection equipment, allowing businesses to improve their air quality through the impingement process. Using a scrubbing liquid to remove harmful pollutants from your air, wet scrubbers are perfect for applications with light dust loadings, wet or sticky particulates, vapor and gases, and combustible dust. To help you get the perfect wet scrubber for your facility’s needs, the experts at Sly created our new Wet Scrubber Handbook. This info-packed handbook contains helpful information regarding all of your wet scrubber needs. [Read More](https://info.slyinc.com/wet-scrubber-handbook-lp-1?_gl=1%2Aijql53%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTY2MjguMzIuMC40MTU4MDM1MTE.) ##### Downloads --- - [Download the Wet Scrubber Brochure](https://www.slyinc.com/pdfs/WetScrubber.pdf) - [Download the Venturi Scrubber Brochure](https://www.slyinc.com/pdfs/Venturi.pdf) - [Application Examples](https://www.slyinc.com/products/industrial-wet-scrubbers/venturi-wet-scrubber/venturi-wet-scrubber-application-examples/) - [Why Choose Sly? Video](https://www.youtube.com/watch?v=uqA8nRA7tvM) ## **Venturi Wet Scrubber – FAQs** **How does a venturi wet scrubber work?** A venturi scrubber accelerates contaminated gas through a constricted throat where scrubbing liquid is introduced at high velocity. The intense mixing captures fine particulate and certain gaseous contaminants. ****What applications are best suited for venturi scrubbers?**** Venturi scrubbers excel at processing high-temperature, high-humidity gas streams, fine particulates, sticky dust, and spray dryer exhaust. They also offer greater safety than dry systems when handling combustible materials. ****How efficient are venturi wet scrubbers at capturing fine particulate?**** Venturi scrubbers can achieve very high collection efficiencies, often capturing particles as small as 1 microns, depending on system design and operating conditions. ****Why would a facility choose a venturi scrubber instead of a baghouse?**** Facilities often select wet scrubbers when particulate is hygroscopic, sticky, volatile, or difficult to handle with dry filtration systems. **What factors affect venturi scrubber performance?** Key factors include gas velocity, liquid-to-gas ratio, pressure drop, droplet size, and venturi throat geometry. --- ### [Impinjet® Wet Scrubbers](https://www.slyinc.com/products/industrial-wet-scrubbers/impinjet-wet-scrubber/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![ImpinJet-Wet-Scrubber-by-Sly](https://www.slyinc.com/wp-content/uploads/2024/11/ImpinJet-Wet-Scrubber-by-Sly.jpg "ImpinJet-Wet-Scrubber-by-Sly | Sly Air Pollution Control") # Impinjet® Wet Scrubbers **High Absorption Efficiency for Gases and Vapors**. ## Sly Impinjet® Wet Gas Scrubbers --- Sly Impinjet® Wet Gas Scrubbers collect particulates and absorb vapors and gases. Low water consumption and minimum pressure drop achieve high collection efficiencies (99% @5 microns). This is the most efficient low-energy scrubber available—capacities to 200,000+ CFM. Constructed in either metal or plastic, each scrubber stage acts as a discrete fractional collector. Often referred to as “plate scrubbers or tray scrubbers,” the Impinjet units are available in multiple-stage designs to maximize efficiencies. Highly resistant to fouling, the Impinjet Wet Scrubber is ideal for applications requiring condensing and particulate removal. Water requirements are typically 3 GPM per 1000 ACFM. Impinjet® Scrubbers furnish unique flexibility. With the future in mind, additional stages can be added to existing installations to improve efficiency and handle tomorrow’s requirements without increasing liquid consumption. There is no need to buy complete new units. ![wet scrubber](https://www.slyinc.com/wp-content/uploads/2024/11/Wet-Scrubber-6-CNR-.jpg "Wet-Scrubber-6-CNR- | Sly Air Pollution Control") #### Request a Quote [Contact Us](https://www.slyinc.com/contact/request-a-quote/) ### Features & *Benefits* - 99% collection efficiency for 5 microns or larger. - Optimal performance for cooling, condensing and heat recovery for applications with hot flue gases. - High absorption efficiency for gases and vapors. Experts agree that impingement plate towers have the ability to remove gaseous pollutants to any desired concentration if a sufficient number of plates are used. This means high mass transfer rates can be achieved. - These high efficiencies are achieved at a low pressure drop. - No moving parts to maintain. - Needs less scrubbing fluid than most other scrubbers. - Integral sump or separate recirculation system designs available to minimize total water consumption. - Can handle high temperatures and temperature fluctuations. Options --- - Easily adjustable throat permits setting pressure for maximum efficiency. Can be fine-tuned to application while scrubber is running. Throat Damper blased are readily replaceable. - Variable-spin damper in separator maintains proper velocity for collection of fine droplets. - Removable scrubbing liquid piping- no nozzles to wear or plug. - Access door permits inspection of flooded elbow and spin damper. - Simple open design has low potential for buildup and pluggage. - Temperature and corrosion resistant construction is available. - Can employ a high concentration slurry as scrubbing liquid #### Impingement Scrubber Operating Principles The gas passes up through the openings in the perforated plates (trays) that hold a bed of liquid. The secret is in the scrubber’s design, which uses an impingement baffle above each individual hole. The tiny droplets created by the wetted baffles are the heart of the collection process. Gas velocities of 60 to 75 feet/second through the holes result in thousands of jets, which atomize the liquid into droplets 100 microns in diameter to clean the contaminated gas. This entraps the particles in the scrubbing liquid. Each jet aspirates liquid from the blanket of scrubbing fluid and results in a wetted target surface on the baffle, which is located just above the point of maximum velocity (vena contracta). In operation, the scrubber is highly pluggage-resistant. The continuous violent agitation of the blanket of scrubbing fluid prevents settling of particles and flushes them away. Intimate gas/liquid contact results in the maximum collection efficiency for particles and droplets as well as absorption (mass transfer) of gases and vapors. When used for absorption, low outlet emissions can be achieved by virtue of the scrubber’s countercurrent operation. The Sly Impinjet® Gas Scrubber is able to reduce gaseous pollutants to any desired concentration if a sufficient number of plate stages is used. ![](https://www.slyinc.com/wp-content/uploads/2024/08/impinjet-efficiency-300x260-1.png "impinjet-efficiency-300x260-1 | Sly Air Pollution Control") ##### Impinjet Wet Scrubbers ![](https://www.slyinc.com/wp-content/uploads/2024/12/Model-220-Impinjet-scrubber-system-300x300.jpg) Sly Model 220 Impinjets ![](https://www.slyinc.com/wp-content/uploads/2024/12/Impinjet-WetScrubber-Operation-Rendering-300x300.jpg) Collect / Scrub Particulates, and Absorb Vapors & Gases ![](https://www.slyinc.com/wp-content/uploads/2024/12/ImpinJet-Wet-Gas-Scrubber-Deck-300x300.jpg) Wet Gas Scrubbing Technology ![]() Sly Model 220 Impinjets ![]() Collect / Scrub Particulates, and Absorb Vapors & Gases ![]() Wet Gas Scrubbing Technology ###### Featured Resources [![](https://www.slyinc.com/wp-content/uploads/2024/09/sly-wet-scrubber-thumbnail.png "sly-wet-scrubber-thumbnail | Sly Air Pollution Control")](https://info.slyinc.com/wet-scrubber-guide?_gl=1%2A180h04n%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTY2MjguMzIuMC40MTU4MDM1MTE.) #### Getting Started with Wet Scrubbers The first step to getting the best wet scrubbing system possible is knowing what your application needs. This resource details everything you need to know about wet scrubbers and how to make the right selection for your facility. [Read More](https://info.slyinc.com/wet-scrubber-guide?_gl=1%2A180h04n%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTY2MjguMzIuMC40MTU4MDM1MTE.) [![](https://www.slyinc.com/wp-content/uploads/2024/09/SLY_WetScrubberBuyersGuideCover.png "SLY_WetScrubberBuyersGuideCover | Sly Air Pollution Control")](https://info.slyinc.com/wet-scrubber-buyers-guide-1?_gl=1%2A1urevvb%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTY2MjguMzIuMC40MTU4MDM1MTE.) #### Wet Scrubbers Buyer’s Guide Wet scrubbers can tackle tough air pollution control challenges that dry dust collectors can’t. Certain scenarios all but demand a wet scrubber. But how you do decide what wet scrubber is best for you and what supplier to use? [Read More](https://info.slyinc.com/wet-scrubber-buyers-guide-1?_gl=1%2A1urevvb%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTY2MjguMzIuMC40MTU4MDM1MTE.) [![](https://www.slyinc.com/wp-content/uploads/2024/09/wetscrubberhandbook.png "wetscrubberhandbook | Sly Air Pollution Control")](https://info.slyinc.com/wet-scrubber-handbook-lp-1?_gl=1%2Aijql53%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTY2MjguMzIuMC40MTU4MDM1MTE.) #### Wet Scrubber Handbook Wet scrubbers are unique pieces of dust collection equipment, allowing businesses to improve their air quality through the impingement process. Using a scrubbing liquid to remove harmful pollutants from your air, wet scrubbers are perfect for applications with light dust loadings, wet or sticky particulates, vapor and gases, and combustible dust. To help you get the perfect wet scrubber for your facility’s needs, the experts at Sly created our new Wet Scrubber Handbook. This info-packed handbook contains helpful information regarding all of your wet scrubber needs. [Read More](https://info.slyinc.com/wet-scrubber-handbook-lp-1?_gl=1%2Aijql53%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTY2MjguMzIuMC40MTU4MDM1MTE.) ##### Downloads --- - [Download the Wet Scrubber Brochure](https://www.slyinc.com/wp-content/uploads/2025/02/Wet-Scrubber-Final-Web.pdf) - [Download the Impinjet Scrubber Brochure](https://www.slyinc.com/wp-content/uploads/2025/01/Impinjet-Specific-Brochure-Web.pdf) - [Application Examples](https://www.slyinc.com/products/industrial-wet-scrubbers/impinjet-wet-scrubber/impinjet-wet-scrubbers-application-examples/) - [Why Choose Sly? Video](https://www.youtube.com/watch?v=uqA8nRA7tvM) ## **Impinjet® Wet Scrubber – FAQs** **What is an Impinjet wet scrubber used for?** Impinjet wet scrubbers remove particulates, fumes, and gases from industrial exhaust streams. They are commonly used in chemical processing, metals, fertilizers, and applications with corrosive contaminants. ****How does an Impinjet scrubber remove contaminants?**** The system forces contaminated air through high-energy impingement zones where liquid droplets capture particulate and absorb gases before the cleaned air exits the scrubber. ****What particle sizes can an Impinjet scrubber capture?**** Impinjet scrubbers are highly effective at removing particles larger than about 5 microns while also controlling certain gas-phase pollutants. ****What are the advantages of an Impinjet scrubber compared to dry collectors?**** Impinjet scrubbers are ideal for high-humidity or high-temperature applications where dry filtration systems may blind or wear excessively. ****Can Impinjet scrubbers be customized for specific applications?**** Yes. Sly designs Impinjet systems with custom materials, pressure drops, airflow capacities, and liquid handling configurations based on process requirements. --- ### [Baghouse Dust Collector Parts & Replacement Filters](https://www.slyinc.com/products/dust-collectors/replacement-parts/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![parts](https://www.slyinc.com/wp-content/uploads/2024/11/Parts-Page-Hero.jpg "Parts-Page-Hero | Sly Air Pollution Control") # Replacement Parts **Ensure Peak Performance with Sly Genuine Parts.** ## Replacement Part Options --- ### [Dry Filters](/products/dust-collectors/replacement-parts/dry-filters/) [![filter bag options](https://www.slyinc.com/wp-content/uploads/2024/10/filter-bags-Sly-Dust-Collector.jpg "filter-bags-Sly-Dust-Collector | Sly Air Pollution Control")](/products/dust-collectors/replacement-parts/dry-filters/) Sly now offers many types of replacement dust collector bags, including any size or style. This expanded line includes major fabrics such as Nomex®, polyester, polypropylene, Ryton®, P-84, cotton, PTFE, membrane, and Teflon®. The replacement bags are for Sly-brand equipment and nearly any other dust collector manufacturer. Most common bags are shipped within one to two weeks of ordering. ### [Liquid Filters](https://www.slyinc.com/products/dust-collectors/replacement-parts/liquid-filters/) [![Standard_felt_liquid_filter_bag](https://www.slyinc.com/wp-content/uploads/2024/11/Standard_felt_liquid_filter_bag-3.jpg "Standard_felt_liquid_filter_bag-3 | Sly Air Pollution Control")](https://www.slyinc.com/products/dust-collectors/replacement-parts/liquid-filters/) Sly Liquid Filtration bags are designed for high dirt holding capacity and high flow. We carry bags constructed from many different materials, such as felt, mesh, micro-fiber, polyester and more. ### [Cartridge Filters](https://www.slyinc.com/products/dust-collectors/replacement-parts/cartridge-filters/) [![](https://www.slyinc.com/wp-content/uploads/2024/11/cartridge-filters1-1024x893.jpg "cartridge-filters1 | Sly Air Pollution Control")](https://www.slyinc.com/products/dust-collectors/replacement-parts/cartridge-filters/) Sly now offers replacement dust collector cartridge filters for nearly every major manufacturer of cartridge-style dust collectors. Most common designs can be shipped within two days of receiving an order. ### [Envelope Bags](https://www.slyinc.com/products/dust-collectors/replacement-parts/envelope-bags/) [![](https://www.slyinc.com/wp-content/uploads/2024/11/img-envelope.png "img-envelope | Sly Air Pollution Control")](https://www.slyinc.com/products/dust-collectors/replacement-parts/envelope-bags/) Envelope rectangular bags pack more filter cloth per cubic foot into the smallest space. Sly offers the broadest line of dust collector envelope-type bags. ### [Pleated Bags](https://www.slyinc.com/products/dust-collectors/replacement-parts/pleated-bags/) [![](https://www.slyinc.com/wp-content/uploads/2024/11/Add-White-Space-around-these-photos-768x1024.jpg "Add-White-Space-around-these-photos | Sly Air Pollution Control")](https://www.slyinc.com/products/dust-collectors/replacement-parts/pleated-bags/) Pleated dust collector filter bags offer an alternative to optimizing collector efficiency without requiring a larger collector case. Each pleated bag contains 300% to 500% as much media as a conventional dust collector bag. Additionally, pleated bags are easier to clean than conventional felts because they are surface-loaded, meaning the dust doesn’t penetrate the media’s surface. ### [Retrofits](https://www.slyinc.com/products/dust-collectors/replacement-parts/retrofits/) [![](https://www.slyinc.com/wp-content/uploads/2024/11/pleatjet-retrofit.jpg "pleatjet-retrofit | Sly Air Pollution Control")](https://www.slyinc.com/products/dust-collectors/replacement-parts/retrofits/) We can re-engineer and modernize existing collectors (Sly and others) for top performance. We can often re-engineer up-to-date internals and controls while maintaining your old “box.” Give us a call to discuss retrofits for Sly, or other manufacturers equipment. Let us evaluate your old baghouse or cartridge collector for potential new life. ### [Dust Collector Cages](https://www.slyinc.com/products/dust-collectors/replacement-parts/dust-collector-cages/) [![](https://www.slyinc.com/wp-content/uploads/2024/11/parts-dust-cage.jpg "parts-dust-cage | Sly Air Pollution Control")](https://www.slyinc.com/products/dust-collectors/replacement-parts/dust-collector-cages/) A complete range of cages to fit nearly any manufacturer’s dust collector is available. Most are constructed of 11-gauge galvanized wire using a 12-vertical wire design, which extends dust collector bag life by providing extra support. Also available are special venturi/cage assemblies, 304 and 316 stainless steel, and epoxy coated cages designed to meet the most demanding applications. ### [Dust Collector Valves](https://www.slyinc.com/products/dust-collectors/replacement-parts/dust-collector-valves/) [![](https://www.slyinc.com/wp-content/uploads/2024/11/valves.jpg "valves | Sly Air Pollution Control")](https://www.slyinc.com/products/dust-collectors/replacement-parts/dust-collector-valves/) Sly now offers replacement diaphragm valves, diaphragm valve repair kits, and solenoid valves. This newly enlarged line includes all major brands, such as Goyen, Asco, and Tae-Ha. We can help you if you have Sly branded dust collector equipment or equipment from other manufacturers. Most dust collector valves and valve repair kits ship in two days. ### [Dust Collector Timer Boards](https://www.slyinc.com/products/dust-collectors/replacement-parts/dust-collector-timer-boards/) [![](https://www.slyinc.com/wp-content/uploads/2024/11/timer-1-min.jpg "timer-1-min | Sly Air Pollution Control")](https://www.slyinc.com/products/dust-collectors/replacement-parts/dust-collector-timer-boards/) Sly offers timer boards for nearly any pulse jet dust collector. ### You Get Dust Collector OEM Quality Because We Are a Dust Collector OEM. Dust Collector replacement bags, parts, and filters for virtually any dust collection manufacturer’s equipment; all sizes and media. - Most orders shipped in a week or less - Competitive prices ![Dust-Collector-Replacement-Parts](https://www.slyinc.com/wp-content/uploads/2024/11/Dust-Collector-Replacement-Parts.png "Dust-Collector-Replacement-Parts | Sly Air Pollution Control") #### Contact the Sly Parts Department [Contact Us](https://www.slyinc.com/contact/request-parts/) **[ 1-800-200-9530](tel:1-800-200-9530)** ###### Featured Resources [![](https://www.slyinc.com/wp-content/uploads/2024/09/sly-resource-thumb-maintenance-checklist-for-a-better-baghouse-parts-down-campaign.webp "sly-resource-thumb-maintenance-checklist-for-a-better-baghouse-parts-down-campaign | Sly Air Pollution Control")](https://info.slyinc.com/maintenance-checklist-for-a-better-baghouse-download-1?_gl=1%2A1ftd5z5%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA0NDEzMi4xNC4xLjE3MzcwNDY4ODcuMTMuMC4xOTkxNTIzOTE5) #### Maintenance Checklist for a Better Baghouse Now that you have the right dust collection system designed and installed, make sure it’s running at optimal efficiency. For improved performance and reliability, Sly recommends a schedule of routine inspections and timely repair of damaged or malfunctioning equipment. [Read More](https://info.slyinc.com/maintenance-checklist-for-a-better-baghouse-download-1?_gl=1%2A1ftd5z5%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA0NDEzMi4xNC4xLjE3MzcwNDY4ODcuMTMuMC4xOTkxNTIzOTE5) ##### Downloads --- - [Download the Replacement Parts Catalog](https://www.slyinc.com/wp-content/uploads/2025/01/SLY-Aftermarket-Web.pdf) - [Baghouse Maintenance Checklist](https://info.slyinc.com/maintenance-checklist-for-a-better-baghouse-download-1 "Baghouse Maintenance Checklist") - [Parts and Maintenance Guide](https://info.slyinc.com/parts-and-maintenance-guide-1) ## **FAQs – Dust Collector Replacement Parts** ****What replacement parts are commonly needed for dust collectors?**** Common replacement components include filter bags, cages, cartridges, pulse valves, timer boards, diaphragms, gaskets, and hopper discharge devices. ******How often should dust collector parts be replaced?****** Replacement schedules depend on operating conditions, dust characteristics, and maintenance practices. Monitoring pressure drop and filter performance helps determine replacement timing. ******Can replacement parts improve system performance?****** Yes. Upgrading filter media or valves can improve filtration efficiency, reduce compressed air consumption, and extend equipment life. ******Are OEM parts important for dust collectors?****** Using OEM-spec components helps ensure proper fit, reliable operation, and compatibility with the collector design. ******Does Sly provide aftermarket support and troubleshooting?****** Yes. Sly provides engineering support, parts identification, and maintenance guidance to help facilities keep dust collectors operating reliably. --- ### [Sales Drawings](https://www.slyinc.com/resources/sales-drawings/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![sales drawing](https://www.slyinc.com/wp-content/uploads/2024/11/saled-drawing-hero.jpg "saled-drawing-hero | Sly Air Pollution Control") # Sales Drawings **View Our Sales Drawings.** ## Sly, LLC Dry Filter Sales Drawings (PDF) --- **[TubeJet® CBR Series](https://www.slyinc.com/tubejet-baghouse-dust-collectors/)** - [CBR with Flat Top & Radial Inlet](https://www.slyinc.com/wp-content/uploads/2026/08/CBR-FT-R.pdf) - [CBR with Dished Head & Radial Inlet](https://www.slyinc.com/wp-content/uploads/2026/08/CBR-DH-R.pdf) - [CBR with Dished Head & Tangential Inlet](https://www.slyinc.com/wp-content/uploads/2026/08/CBR-DH-T.pdf) **[TubeJet® CTR Series](https://www.slyinc.com/tubejet-baghouse-dust-collectors/)** - [CTR-700-1- CTR with Dished Head & Radial Inlet](https://www.slyinc.com/wp-content/uploads/2026/08/CTR-DH-R.pdf) - [CTR-700-2- CTR with Dished Head and Tangential Inlet](https://www.slyinc.com/wp-content/uploads/2026/08/CTR-DH-T.pdf) - [CTW-700-3- CTR with Walk-In Plenum](https://www.slyinc.com/wp-content/uploads/2026/08/CTR-WIP-R.pdf) - [CTR-FT- CTR with Flat Head and Radial Inlet](https://www.slyinc.com/wp-content/uploads/2026/08/CTR-FT-R.pdf) **[TubeJet® STJ Series](https://www.slyinc.com/stj-sbr-square-series-pulse-jet-collectors/)** - [STJ with Hatch Top Bin Vent-Up to 10 filters deep](https://www.slyinc.com/wp-content/uploads/2026/08/STJ-HT-BV-4.6.8.10.pdf) - [STJ with Hatch Top and Pyramidal Hopper-Up to 8 filters deep](https://www.slyinc.com/wp-content/uploads/2026/08/STJ-HT-P-4.6.8.pdf) - [STJ with Hatch Top and Pyramidal Hopper-16 filters deep](https://www.slyinc.com/wp-content/uploads/2026/08/STJ-HT-P-16.pdf) - [STJ with Walk-in Plenum and Pyramid Hopper-16 filters deep](https://www.slyinc.com/wp-content/uploads/2025/01/STJ-503-2-STJ-16-Series-with-Walk-in-Plenum-and-Pyramid-Hopper-Copy.pdf) - [STJ with Hatch Top and Trough Hopper-16 filters deep](https://www.slyinc.com/wp-content/uploads/2026/08/STJ-HT-T-16.pdf) - [STJ](https://www.slyinc.com/wp-content/uploads/2025/01/STJ-503-4-STJ-16-Series-with-Walk-in-Plenum-and-Trough-Hopper.pdf)[ with Walk-in Plenum and Trough Hopper-16 filters deep](https://www.slyinc.com/wp-content/uploads/2026/08/STJ-WIP-T-16.pdf) - [STJ with Hatch Top and Pyramidal Hopper-14 filters deep](https://www.slyinc.com/wp-content/uploads/2026/08/STJ-HT-P-14.pdf) - [STJ with Walk-in Plenum and Pyramid Hopper-14 filters deep](https://www.slyinc.com/wp-content/uploads/2026/08/STJ-WIP-P-14.pdf) - [STJ with Hatch Top and Trough Hopper-14 filters deep](https://www.slyinc.com/wp-content/uploads/2026/08/STJ-HT-T-14.pdf) - [STJ with Walk-in Plenum and Trough Hopper-14 filters deep](https://www.slyinc.com/wp-content/uploads/2026/08/STJ-WIP-T-14.pdf) - [STJ with Hatch Top and Pyramidal Hopper-10 filters deep](https://www.slyinc.com/wp-content/uploads/2026/08/STJ-HT-P-10.pdf) - [STJ with Walk-in Plenum and Pyramid Hopper-10 filters deep](https://www.slyinc.com/wp-content/uploads/2026/08/STJ-WIP-P-10.pdf) - [STJ with Hatch Top and Pyramidal Hopper-12 filters deep](https://www.slyinc.com/wp-content/uploads/2026/08/STJ-HT-P-12.pdf) - [STJ with Walk-in Plenum and Pyramid Hopper-12 filters deep](https://www.slyinc.com/wp-admin/upload.php?item=15211#:~:text=https%3A//www.slyinc.com/wp%2Dcontent/uploads/2026/08/STJ%2DWIP%2DP%2D12.pdf) **[Cyclone Dust Collector](https://www.slyinc.com/products/dust-collectors/cyclone-dust-collector/)** - [Cyclone Dust Collector-Models 6 to 68](https://www.slyinc.com/wp-content/uploads/2026/08/CY-ME2-6_68.pdf) - [Cyclone Dust Collector-Models 70 to 132](https://www.slyinc.com/wp-content/uploads/2026/08/CY-ME2-70-132-5.pdf) **[Impinjet® Wet Scrubber](https://www.slyinc.com/products/industrial-wet-scrubbers/impinjet-wet-scrubber/)** - [Impinjet® with Fixed Blade Mist Eliminator Sizes 15 to 95](https://www.slyinc.com/wp-content/uploads/2026/08/IMP-FB-15_95.pdf) - [Impinjet® with Fixed Blade Mist Eliminator Sizes 100 to 140](https://www.slyinc.com/wp-content/uploads/2026/08/IMP-FB-100_140.pdf) **[Venturi Wet Scrubber](https://www.slyinc.com/products/industrial-wet-scrubbers/venturi-wet-scrubber/)** - [Venturi and Separator-Sizes 0.5-12](https://www.slyinc.com/wp-content/uploads/2026/08/VENT-SEP-0.5-12.pdf) **[TubeJet® SBR Series](https://www.slyinc.com/stj-sbr-square-series-pulse-jet-collectors/)** - [SBR Bin Vent up to 10 filters deep](https://www.slyinc.com/wp-content/uploads/2026/08/SBR-BV-4.6.8.10.pdf) - [SBR with pyramidal hopper up to 10 filters deep](https://www.slyinc.com/wp-content/uploads/2026/08/SBR-P-4.6.8.10.pdf) --- ### [OEM](https://www.slyinc.com/oem/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2025/07/dust-explosion-protection-expertise-1024x427.jpg "dust-explosion-protection-expertise | Sly Air Pollution Control") # Partner With A Proven Baghouse / Dust Collection Manufacturer **Whether it’s dry or wet dust collection, OEM’s trust Sly for proven air pollution control systems.** ## OEM Dust Collection Manufacturer --- We know that while we’re one piece of an overall solution, we may be the most important one. Dust collection help to maintain a healthy work environment and ensures compliance. Sly works seamlessly to deliver a comprehensive solution for our customers. Whether you need a design for collecting particulates from thermal processes, size reduction, or managing dust clouds from material handling, we will customize a baghouse dust collector or a wet scrubber system perfect for you. Whatever your requirements, we will be your ultimate partner in selecting the right solution and streamlining the entire project: from selection and budgeting to design, construction, installation, and operation. [Request A Quote](https://www.slyinc.com/contact/request-a-quote/) **[1-866-783-4758](TEL:1-866-783-4758)** ![](https://www.slyinc.com/wp-content/uploads/2024/10/Wet-Scrubbers-OEMs.jpg "Wet-Scrubbers-OEMs | Sly Air Pollution Control") With 150 years of experience, we work to make dust collection one aspect of the system you don’t need to worry about. We’re experts in designing reliable dust collection solutions, so you can feel confident that it simply works. ### The Expertise You Need. The Service You Deserve. Because you work hand-in-hand with our system engineers and designers, you can rely on Sly’s expertise to provide the right system design, specs, and detailed engineering drawings. We know that your solution has unique needs, so we customize our design to your specifications. #### Remove The Guesswork & Get The Best Solution We help you anticipate pitfalls before they become a problem, by reminding you of key factors to keep in mind when choosing the right solution. We’re able to quote your design accurately in the beginning to avoid price adjustments later. We ask the right questions up front, to prevent costly overruns to you as an OEM. - **Wet Scrubber or Dust Collector:** Sly offers several technologies, and our experts work with you to determine the best solutions. We offer four types of wet scrubber technologies for particulate collection and gas adsorption. We offer traditional baghouses, cartridge collectors in both vertical and horizontal mount styles, and pleated bag options. - **Dust Collection Equipment Environment:** Indoors size restraints? Outdoor environmental conditions? Seismic or hurricane designs for supports? We design for all conditions. - **Process Conditions:** Temperature and humidity are significant factors that may affect the selection of a wet scrubber vs. a dry baghouse. If dry, filter media and baghouse construction materials must be designed for the application. Loading, bulk density, and particle size affect the optimal geometry of the unit and the suitable air-to-cloth ratio to pick. - **Explosive Dust:** Is your dust combustible? You might be surprised to know that most OEMs don’t have the same understanding as we do, as dust collection experts, for just how common an issue this is. Sly has excellent relationships with all the major dust explosion protection vendors. We can recommend where to get testing, and we understand the requirements for explosion protection designs. - **Managing[ Interstitial Velocity](https://www.slyinc.com/blog/how-to-optimize-interstitial-velocity-on-dust-collectors/):** Many systems fail because of faulty system specs for fine dust particle size and light bulk density. Perhaps more than most, during the proposal phase, this area is one where Sly helps ensure our offer will perform according to the actual realities of your application. - **Safety Rules and Regulations:** In any system, safety rules and requirements are paramount to company success. Organizations like the National Fire Prevention Association (NFPA) and Occupational Health and Safety Association (OSHA) issue standards and guidelines for manufacturing equipment to ensure maximum workplace safety. Sly keeps in front of changes in all the necessary certifications and in how to design [dust collector solutions that are OSHA and NFPA compliant.](https://www.slyinc.com/blog/how-to-ensure-nfpa-and-osha-compliance-in-your-dust-collection-system/) - **Overseas Shipping:** If you are shipping equipment overseas, we have knockdown capabilities and can package equipment for long-distance shipping. ##### Your Trusted Advisor in Dust Collector & Wet Scrubber Manufacturing --- Our service to you doesn’t stop after handing over the quote. We answer questions and provide detailed engineering drawings with immediacy to keep your project moving. We offer responsive, personal, and hassle-free customer service. No other company provides a better customer service experience. **From quoting to design to fabrication to post-sale support, Sly prides itself on being your trusted partner.** --- ### [Sales Personnel](https://www.slyinc.com/about/sales-personnel/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/09/sales-hero.jpg "sales-hero | Sly Air Pollution Control") # Sales Personnel **Meet Our Team of Air Pollution Control Experts.** ## Your Trusted Advisors At Sly, our team is the cornerstone of our 150-year legacy of innovation and excellence. Our staff brings a wealth of expertise, dedication, and passion to every project, ensuring that we continue to deliver outstanding service. Among our valued team members is a veteran who has been with us since 1974, exemplifying the commitment and knowledge that defines Sly. Together, our team combines decades of experience with forward-thinking approaches, making us a trusted name in the industry. ![](https://www.slyinc.com/wp-content/uploads/2024/11/bill-small.jpg "Bill") Infobox Link Bill Kurz Project Engineer – Dry ![](https://www.slyinc.com/wp-content/uploads/2024/11/dave-small.jpg "Dave") Dave Mosinski OEM Business Development Manager ![](https://www.slyinc.com/wp-content/uploads/2024/11/al-small.jpg "Al") Al Moretti Team Leader Project Engineer ![](https://www.slyinc.com/wp-content/uploads/2024/11/aaron-small.jpg "Aaron") Aaron Zalar Project Engineer ![](https://www.slyinc.com/wp-content/uploads/2026/07/alex1.jpg "Alex") Alex Martineau Project Engineer ![](https://www.slyinc.com/wp-content/uploads/2024/11/dwayne-.jpg "Dwayne") Dwayne Sanders Scrubber Product Manager ![](https://www.slyinc.com/wp-content/uploads/2024/11/shawn.jpg "Shawn") Shawn Altaffer P.E., Project Engineer ![](https://www.slyinc.com/wp-content/uploads/2026/07/sam.jpg "Sam") Sam Bamberger Project Engineer ![](https://www.slyinc.com/wp-content/uploads/2024/11/rob.jpg "Rob") Rob Koch Contract Administrator ![](https://www.slyinc.com/wp-content/uploads/2024/11/doug.jpg "Doug") Doug Lantow Aftermarket Manager ![](https://www.slyinc.com/wp-content/uploads/2024/11/ella.jpg "Ella") Ella Boitell Aftermarket Account Manager ![](https://www.slyinc.com/wp-content/uploads/2024/11/tricia-1.jpg "Tricia") Tricia Montz Aftermarket Sales Manager ![](https://www.slyinc.com/wp-content/uploads/2024/11/jeanne.jpg "Jeanne") Jeanne Whitsel Contract Administrator General Inquiries? [Contact](/contact) --- ### [The Sly Approach](https://www.slyinc.com/about/sly-approach/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![Sly-Approach-Wet-Scrubbing-System](https://www.slyinc.com/wp-content/uploads/2024/11/Sly-Approach-Wet-Scrubbing-System.jpg "Sly-Approach-Wet-Scrubbing-System | Sly Air Pollution Control") # The Sly Approach **Our Commitment to Total Customer Support Helps Guarantee Superior Value for Your Investment.** ## Why We Are Different --- Many companies make air pollution control equipment, but none have been doing it as long as Sly. Over a century has passed since our original patent for the cloth dust collector. Over the years, we’ve learned plenty about the application and fabrication of dust collectors and scrubbers. Here are the main points: ![](https://www.slyinc.com/wp-content/uploads/2024/07/Air-Pollution-Control-Gradient.png "Air-Pollution-Control-Gradient | Sly Air Pollution Control") #### In the pollution control business, conservative application of technology is best. Equipment misapplication has no place in the air pollution control business. Not only is improper equipment apt to fall short of collection requirements, but it is oftentimes more expensive to operate than properly applied equipment. For example, incorrect sizing and improper media choice can easily lead to excessive maintenance and costly downtime. When you deal with Sly, we have your best long-term air pollution control interests in mind. #### We believe in fitting the equipment to the customer’s needs, not the customer to the equipment’s capabilities. This approach earns us the respect and repeat business of many sophisticated air pollution control equipment buyers. These people, many of whom buy dozens of dust collectors or scrubbers every few years, have always represented a large portion of our customer base. We are proud to serve our loyal customers around the globe. #### We build our equipment … for some very good reasons. Sly can custom fabricate a dust collector or scrubber for you while keeping a competitive price because we are the manufacturer. Unlike most competitors, we don’t outsource much of our dust collection production. We do our own engineering, metal fabrication, painting, assembly, quality control, and laboratory R&D. This way, we control every step of the process, allowing us greater flexibility to build the best dust collector or scrubber for your needs. We strongly commit to shipping dates and routinely guarantee ship dates when requested. #### Our obligation to the customer doesn’t end when the equipment is shipped. Sly’s staff of engineers can promptly assist you in troubleshooting your dust collector, scrubber, loading spout, or other field service problems should they arise at your facility. This commitment to total customer support helps guarantee superior value for your investment. Learn More About Our Approach [Contact Us](https://www.slyinc.com/contact/) --- ### [Powder & Bulk Solids](https://www.slyinc.com/industries/powder-bulk-solids/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/09/powder-bulk-solids.jpg "powder-bulk-solids | Sly Air Pollution Control") # Powder & Bulk Solids **Our Dust Collection Specialists Will Guide You Through Customizing the Perfect System for Your Industry Needs**. ## Optimize Your Powder & Bulk Solids Operations with Smart Dust Collection Solutions --- ##### What Are Powder and Bulk Solid Dust Collector Applications? Powder and bulk solids refer to finely divided, dry materials that can flow freely under gravity. Powders typically consist of tiny particles, while bulk solids encompass a broader category, including powders and larger particles such as granules, pellets, and even larger pieces like rocks or chunks. These materials are commonly used in pharmaceuticals, food processing, mining, and construction industries. Bulk and powder applications for dust collection involve the removal of airborne particles generated during the handling, processing, or transporting of dry materials. Some common applications include Material Handling, Mixing & Blending, Grinding and Milling, Packaging & Bagging, Screening & Sifting, and Storage & Silo Venting. ![](https://www.slyinc.com/wp-content/uploads/2024/07/powder-bulk-solids-processing-white.png "powder-bulk-solids-processing-white | Sly Air Pollution Control") Key Considerations for Averting Powder & Bulk Solids Processing and Handling Issues [Download White Paper](https://info.slyinc.com/considerations-for-averting-powder-bulk-solids-processing-and-handling-issues) ### Dust Collection Equipment for Powder & Bulk Solids ![](https://www.slyinc.com/wp-content/uploads/2025/01/baghouse-powder-bulk-solids-dust.jpg) STJ Baghouse Dust Collectors ![](https://www.slyinc.com/wp-content/uploads/2025/01/220-Impinjets-Carbon-Scrubbing.jpg) Impinjet® Wet Scrubbers ![](https://www.slyinc.com/wp-content/uploads/2025/01/Sly-material-handling-load-spout.jpg) Industrial Loading Spouts ![](https://www.slyinc.com/wp-content/uploads/2024/07/Air-Pollution-Control-Gradient.png "Air-Pollution-Control-Gradient | Sly Air Pollution Control") --- Sly offers a complete line of dust collection equipment to keep power and bulk solids processing operations clean from potentially combustible, hazardous dust and remove or recycle it into production. Contact us to design, fabricate, and install a dust collection system tailored to your operations. [Contact Sly](/contact) ### Maximize Dust Collection Efficiency Several types of [dust collectors](https://www.slyinc.com/dust-collectors/) can be used to capture dust generated in powder and bulk solids applications. Each type has advantages and is suitable for specific dust characteristics and application requirements. Here are some common types of dust collectors that can be used for this application: #### Baghouse Dust Collectors Baghouse collectors use fabric filter bags to capture dust particles. Dust particles are trapped on the bag surface as dusty air passes through the bags, while clean air exits through the outlet. Baghouses are suitable for a wide range of dust types and offer high efficiency and large dust-handling capacities. [Learn More](/products/dust-collectors/tubejet-baghouse-dust-collectors/) #### Cartridge Dust Collectors Vertical cartridge collectors use pleated filter cartridges to capture dust particulate. Similar to baghouses, dusty air passes through the cartridges, and dust is collected on the filter surfaces. Cartridge collectors are compact, easy to install, and suitable for applications with limited space or low dust loads. [Learn More](https://www.slyinc.com/products/dust-collectors/vertical-cartridge-filter-collectors/) #### Cyclones Cyclone collectors use centrifugal force to separate dust particles from the airflow. Dust-laden air enters the cyclone tangentially, creating a swirling motion that forces heavier particles into the outer walls, settling into a collection hopper. Cyclones are effective for coarse or abrasive dusts and can be used as pre-collectors in conjunction with other collectors. [Learn More](https://www.slyinc.com/products/dust-collectors/cyclone-dust-collector/) #### Wet Scrubbers Wet scrubbers use water or other liquids to capture and neutralize dust particles. Dust-laden air passes through a water curtain or scrubbing liquid, where particles are dispersed, absorbed, or dissolved into the liquid. Wet scrubbers are effective for sticky or hygroscopic dusts and can remove gases and odors. [Learn More](https://www.slyinc.com/products/industrial-wet-scrubbers/) The choice of dust collector depends on factors such as the type and characteristics of the dust, the required collection efficiency, space constraints, operating conditions, and regulatory compliance requirements. In many cases, a combination of dust collectors or a multi-stage approach may achieve optimal dust control in powder and bulk solids applications. ### Design Considerations for Dust Collectors in Bulk and Powder Applications When selecting a dust collector for bulk solids and powders, it’s crucial to consider several key factors to ensure effective dust capture, streamline space usage, minimize energy consumption, and reduce maintenance needs. These factors include design flow rate, temperature, pressure, dust characteristics, dust loading, emission requirements, disposal of the captured dust, space limitations, material selection of the baghouse, and proper media selection. ### Prevent Dust Disasters: Safety Features for Combustible Materials Certain powder and bulk solid materials are combustible and can be explosive under certain conditions. Explosions can be highly destructive and pose significant risks to personnel, equipment, and facilities. Identifying and designing safety features in accordance with OSHA and NFPA standards will help to minimize the risk of dust explosions and ensure the safety of operations and personnel. Solutions may include venting, suppression, flameless venting, and isolation. ### Tailored Solutions for Powder Handling & Dust Collection Explore the benefits of our customized dust collection systems, tailored to your facility’s needs. Whether reducing downtime, improving safety measures, or ensuring environmental adherence, our solutions focus on efficiency and sustainability. Our technical support team’s knowledge ensures a smooth process from setup to after-sales assistance. ![dust control powder handling](https://www.slyinc.com/wp-content/uploads/2025/01/dust-control-powder-handling.jpg "dust-control-powder-handling | Sly Air Pollution Control") ![](https://www.slyinc.com/wp-content/uploads/2025/01/Reverse-Air-Collection-Explosion-Vents.jpg "Reverse-Air-Collection-Explosion-Vents | Sly Air Pollution Control") ##### Key Benefits: - **Custom-Engineered Systems**: We recognize the diversity of each facility. Therefore, our dust collection systems are designed to cater to your operations’ unique needs. - **Reduced Downtime**: Minimizing operational interruptions is crucial. Our units are constructed for longevity and ease of maintenance, preserving continuous workflow. - **Enhanced Safety Protocols**: The health and safety of your workforce remain a paramount concern. Our dust collectors exceed industry safety standards, reducing risks associated with powder handling. - **Environmental Compliance**: Each system we provide ensures that your operations comply with environmental regulations, fostering sustainability throughout all processes. - **Technical Support**: Our team of experts is committed to offering comprehensive support from installation to post-sales services, ensuring you get the most out of your investment. For more information and to discuss your requirements, please [**get in touch**](https://www.slyinc.com/contact/) with our dust collection specialists, who can guide you through selecting and customizing the perfect system for your industry needs. ###### Featured Resources [![](https://www.slyinc.com/wp-content/uploads/2025/01/CPEG-lab-shadow.jpg "CPEG-lab-shadow | Sly Air Pollution Control")](https://www.slyinc.com/wp-content/uploads/2025/01/CPEG-Key-Considerations-Avert-Bulk-Solids-Process-Issues-Jul-2025.pdf) #### Key Considerations for Averting Powder & Bulk Solids Processing and Handling Issues Powder and bulk solids processing and handling are essential components of almost every industry worldwide. From the clothes we wear, the products used to build our vehicles, the coffee and food we consume to the materials used to build our homes, processing and handling bulk solids affects the genetic code of just about everything that keeps the world moving. [Read More](https://www.slyinc.com/wp-content/uploads/2025/01/CPEG-Key-Considerations-Avert-Bulk-Solids-Process-Issues-Jul-2025.pdf) --- ### [Resource Index](https://www.slyinc.com/resources/resource-index/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/09/resources-hero.jpg "resources hero | Sly Air Pollution Control") # Resource Index **Read More in our Resources Index.** ## Wet Scrubbers --- ##### Impinjet Wet Scrubbers - [Download the Wet Scrubber Brochure](https://www.slyinc.com/wp-content/uploads/2026/02/Wet-Scrubber-Web.pdf) - [Download the Impinjet Scrubber Brochure](https://www.slyinc.com/wp-content/uploads/2025/01/Impinjet-Specific-Brochure-Web.pdf) - [Application Example](https://www.slyinc.com/products/industrial-wet-scrubbers/impinjet-wet-scrubber/impinjet-wet-scrubbers-application-examples/) - [The Anatomy of an Impinjet Wet Scrubber Video](https://www.youtube.com/watch?v=tJf9YO-w7j0) ##### Venturi Wet Scrubbers - [Download the Wet Scrubber Brochure](https://www.slyinc.com/wp-content/uploads/2026/02/Wet-Scrubber-Web.pdf) - [Download the Venturi Scrubber Brochure](https://www.slyinc.com/wp-content/uploads/2025/01/Venturi.pdf) - [Application Examples](https://www.slyinc.com/products/industrial-wet-scrubbers/venturi-wet-scrubber/venturi-wet-scrubber-application-examples/) - [Wet Scrubbers Video](https://www.youtube.com/watch?v=H0e0DWg8DUk&feature=youtu.be) ##### Eductor Wet Scrubbers - [Download the Wet Scrubber Brochure](https://www.slyinc.com/wp-content/uploads/2026/02/Wet-Scrubber-Web.pdf) - [Download the Eductor Venturi Scrubber Brochure](https://www.slyinc.com/wp-content/uploads/2025/01/Eductor-Brochure.pdf) - [Applica](https://www.slyinc.com/eductor-wet-scrubber/)[t](https://www.slyinc.com/eductor-wet-scrubber/eductor-wet-scrubber-application-examples/)[ion Examples](https://www.slyinc.com/products/industrial-wet-scrubbers/eductor-wet-scrubber/eductor-wet-scrubber-application-examples/) ##### Packed Tower Wet Scrubbers - [Download the Wet Scrubber Brochure](https://www.slyinc.com/wp-content/uploads/2025/02/Wet-Scrubber-Final-Web.pdf) - [Packed Tower Brochure](https://www.slyinc.com/wp-content/uploads/2025/01/Packed-Tower-Brochure-Web.pdf) ##### Wet Scrubber White Papers - [The Complete Guide to Getting Started with Wet Scrubbers](https://info.slyinc.com/wet-scrubber-guide) - [Wet Scrubber Fact Sheet](https://www.slyinc.com/wp-content/uploads/2025/01/Packed-Tower-1.pdf) - [Wet Scrubber Handbook](https://info.slyinc.com/wet-scrubber-handbook-lp-1) - [Wet Scrubbers Buyers Guide](https://info.slyinc.com/wet-scrubber-guide?__hstc=46213176.fb5568a5fbe4ddaa74c1d803bc40d15b.1732200177286.1736868966481.1736951589619.55&__hssc=46213176.56.1736951589619&__hsfp=3867785717&_gl=1%2A2bfroc%2A_gcl_au%2ANzEwODA1MDUuMTczMjIwMDE3Ng..%2A_ga%2ANDExODQwNzY5LjE3MzIyMDAxNzY.%2A_ga_0G2M9CMRL1%2AMTczNjk1MTU4OC4zNi4xLjE3MzY5NTY4MjYuNTQuMC4yMDI1MjA5MDc4) - [Guide: Using Wet Scrubbers for Combustible Dust Control](https://info.slyinc.com/guide-using-wet-scrubbers-for-combustible-dust-control-1) - [Fiberglass Reinforced Plastic (FRP) Wet Scrubber White Paper](https://info.slyinc.com/wetscrubberfrpguide) ## Dry Equipment --- ##### Dust Collectors - [Download the Dust Collector Brochure](https://www.slyinc.com/wp-content/uploads/2026/02/Dry_Dust_Collectors_Web.pdf "Download the Dust Collector Brochure") - [Dry Dust Collection Handbook](https://info.slyinc.com/dry-dust-collection-handbook-1?__hstc=46213176.fb5568a5fbe4ddaa74c1d803bc40d15b.1732200177286.1736868966481.1736951589619.55&__hssc=46213176.89.1736951589619&__hsfp=3867785717&_gl=1%2A1du1jb4%2A_gcl_au%2ANzEwODA1MDUuMTczMjIwMDE3Ng..%2A_ga%2ANDExODQwNzY5LjE3MzIyMDAxNzY.%2A_ga_0G2M9CMRL1%2AMTczNjk1MTU4OC4zNi4xLjE3MzY5NTkwMTQuMzcuMC4yMDI1MjA5MDc4) - [Dust Collector Buyer’s Guide](https://info.slyinc.com/dust-collector-buyers-guide) - [Guide: How to Design a Dust Collection System](https://info.slyinc.com/dry-dust-collection-system-design-guide-1?__hstc=46213176.fb5568a5fbe4ddaa74c1d803bc40d15b.1732200177286.1736868966481.1736951589619.55&__hssc=46213176.89.1736951589619&__hsfp=3867785717&_gl=1%2Avhf69h%2A_gcl_au%2ANzEwODA1MDUuMTczMjIwMDE3Ng..%2A_ga%2ANDExODQwNzY5LjE3MzIyMDAxNzY.%2A_ga_0G2M9CMRL1%2AMTczNjk1MTU4OC4zNi4xLjE3MzY5NTkwMTQuMzcuMC4yMDI1MjA5MDc4) - [Maintenance Checklist for a Better Baghouse](https://info.slyinc.com/maintenance-checklist-for-a-better-baghouse-download-1) ##### Tubejet Baghouse - [Download TubeJet Application Guide Brochure](https://www.slyinc.com/wp-content/uploads/2025/01/TubeJetDustCollector.pdf) - [Application Examples](https://www.slyinc.com/products/dry-dust-collector-filter-bags/filter-bag-finishes/) - [Fabric Filter Media Options](https://www.slyinc.com/products/dry-dust-collector-filter-bags/) - [SBR TubeJet](https://www.slyinc.com/wp-content/uploads/2025/01/SBR-Tubejet-Web.pdf) - [STJ TubeJet](https://www.slyinc.com/wp-content/uploads/2025/01/STJ-Sly-TubeJet.pdf) - [CBR TubeJet](https://www.slyinc.com/wp-content/uploads/2025/01/CBR-Sly-TubeJet.pdf) - [CTR TubeJet](https://www.slyinc.com/wp-content/uploads/2025/01/CTR-Sly-TubeJet.pdf) ## Both Wet & Dry --- ##### General Resources - [Dry Dust Collectors vs. Wet Scrubbers – Interactive Infographic](https://www.brandcepts.com/sly/DryWet/) - [Sly General Brochure](https://www.slyinc.com/wp-content/uploads/2025/04/SLY_Capabilities_Web.pdf) - [Loading Spouts Brochure](https://www.slyinc.com/wp-content/uploads/2025/01/Sly_Loading-Spouts-Web.pdf) - [Why Choose Sly? Video](https://www.youtube.com/watch?v=uqA8nRA7tvM) ##### Replacement Parts - [Download the Replacement Parts Catalog](https://www.slyinc.com/wp-content/uploads/2025/01/SLY-Aftermarket-Web.pdf) - [Download the Dust Collection Maintenance Handbook](https://www.slyinc.com/wp-content/uploads/2025/01/DustCollectionMaintenance.pdf) - [Parts Guide White Paper](https://info.slyinc.com/parts-and-maintenance-guide-1) ## CPEG --- ##### General Brochure - [Thermal & Dry Solids Processing](https://www.slyinc.com/wp-content/uploads/2025/04/CPEG-Capabilities-Brochure-11-25.pdf) --- ### [Testimonials](https://www.slyinc.com/about/testimonials/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/07/green-grass-blue-sky.jpg "green-grass-blue-sky | Sly Air Pollution Control") # Testimonials **What Our Customers Are Saying.** ## Efficient, Reliable Air Pollution Control. --- - Experience in almost every dust collection application - Multiple solutions for interstitial velocity problems on light dusts - Detailed proposals and engineering drawings - 3D models - Custom design and fabrication - Special support structures - Combustible dust designs / explosion protection “We are happy with the performance of the recent Sly scrubber we installed. We have been operating identical units for several years with good performance and low maintenance. We plan to purchase an additional unit in 2019. Thank you for your continued support.” Russ Brezler, Sr. Engineer DuPont Specialty Compounding “I have had the privilege of working with the Sly family since 1977 and have always had a great relationship with all. This vessel dust collector has performed beyond our needs of service through out the years. Since 1977 we have only had to change the envelope bags 3 times. Personally I am at awe with quality this collector brings every vessel year after year.” James Lavanway Sr. Engineer “In the dust collection business, I need a supplier that will take the time to expedite and deliver a quality product to the job site on time and within budget. SLY, LLC. does everything possible to meet my customers’ requests. Thank you.” Corey C. Morton A D Morton Company “I just wanted to send a brief note and thank you for a wonderful customer service experience. I first contacted Sly on November 15, (from an industry referral) and placed an order for (100) cages. This experience was worth noting and sharing with you. My thanks again, and I will place my future business needs in the capable hands of SLY, LLC.” Larry Powell MidNight Valley Marketing “I just want to drop a few lines to you. I really appreciate how you handled getting me the parts I needed. It’s good to know I can count on you guys (Sly) when the going gets tough, you guys came through for me. Everything fit and is working fine. Thanks again.” Randy Ward Maintenance Supervisor, Johns Manville Plant 2 “Smart buyers believe in the “value proposition” and Sly delivers!” Doug Leuthold Advanced Fiber Tech “I know this sounds like a broken record but, our Sly dust collector is still running very well with little differential pressure. Working at Sly must be kind of like being the Maytag repair man, you’re always waiting on the phone to ring but nothing ever breaks! (at least that has been our experience). Thank you! Robbie Huffman Maintenance Manager, X-calibur Plant Health Co. LLC. --- ### [Legacy Dust Collectors](https://www.slyinc.com/products/dust-collectors/legacy-dust-collectors/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![dynaclone-legacy-dust-collectors](https://www.slyinc.com/wp-content/uploads/2024/11/dynaclone-legacy-dust-collectors.jpg "dynaclone-legacy-dust-collectors | Sly Air Pollution Control") # Legacy Dust Collectors **Rely on Sly to Maintain Your Legacy Dust Collector.** ## Sly Legacy Dust Collectors --- Before 1990, all Sly dust collectors used an envelope-style filter bag. Many long-time Sly customers still operate our durable and reliable Dynaclones, Pactecons, and Shaker-cleaned dust collectors. TubeJet collectors (pulse-cleaned styles with tubular style bags) surpassed the envelope style dust collectors due to their flexibility to handle many applications, ease of customization, ability to clean online on a 24/7 basis, and their lower operating pressure drop. As the Tube-Jet dust collector has become the new standard over the years, Sly has continued to support replacement part business for our legacy models. Sly’s aftermarket and engineering staff retain significant experience and knowledge about the vintage equipment. While the legacy models are no longer marketed as new equipment, Sly can occasionally offer duplicate construction for those customers who have come to rely on these models and have circumstances requiring an “in-kind” replacement. Our aftermarket staff is ready and can offer assistance on parts and maintenance to keep your legacy Sly dust collectors running like new. #### Need Assistance with a Legacy Model? [Contact Us](https://www.slyinc.com/contact/) ### Sly Legacy Models ### PleatJet™ Vertical Cartridge Dust Collector ![pleatjet-vertical-cartridge-dust-collector](https://www.slyinc.com/wp-content/uploads/2024/11/pleatjet-vertical-cartridge-dust-collector.jpg "pleatjet-vertical-cartridge-dust-collector | Sly Air Pollution Control") Energy-saving features such as “on-demand” pressure cleaning, low-pressure drops, and a large selection of media specific to the requirements are only a few advantages. The specially engineered “Opti-Pulse” cartridge cleaning system maximizes energy release, providing more uniform cleaning over the cartridge surface area, including the top of the cartridge. Cleaning the cartridges only when necessary and not continuously translates into energy savings and extended cartridge life. ### PleatJet II™ Horizontal Cartridge Dust Collectors ![pleatjet2-horizontal-cartridge-dust-collectors](https://www.slyinc.com/wp-content/uploads/2024/11/pleatjet2-horizontal-cartridge-dust-collectors.jpg "pleatjet2-horizontal-cartridge-dust-collectors | Sly Air Pollution Control") Energy-saving features such as “on-demand” pressure cleaning, low-pressure drops, and a large selection of media specific to the requirements are only a few advantages. The specially engineered “Opti-Pulse” cartridge cleaning system maximizes energy release, providing more uniform cleaning over the cartridge surface area, including the top of the cartridge. Cleaning the cartridges only when necessary and not continuously translates into energy savings and extended cartridge life. ### Pactecon ![sly-pactecon-dust-collector](https://www.slyinc.com/wp-content/uploads/2024/11/sly-pactecon-dust-collector.jpg "sly-pactecon-dust-collector | Sly Air Pollution Control") Sly Pactecon collectors were designed for low headroom applications and offered side bag removal without entering the filter housing. Sly’s PC-100 Series offered one tier of filter bags, and the PC-200 Series offered two tiers of filter bags. In either model, the filters are arranged in “cells.” The off-line cleaning system takes one cell off-line at a time and cleans it with a lower pressure, higher volume of cleaning air than a typical on-line cleaning pulse jet collector. PC-100-4 and PC-200-4 units contain 8 bags per cell,l and PC-100-6, and PC-200-6 units contain twelve bags per cell. Common replacement parts include envelope filter bags, bag hardware including spacers, eyebolts, springs, front and back mullions, diaphragm valves, solenoid valves, timer boards, gaskets, doors, blowers, fans, rotary valves, and screw conveyors. ### Dynaclone ![dynaclone-filter-reverse-air](https://www.slyinc.com/wp-content/uploads/2024/11/dynaclone-filter-reverse-air.jpg "dynaclone-filter-reverse-air | Sly Air Pollution Control") The Dynaclone filter uses a continuous, gentle reverse air process to clean the bags via a heavy-duty bag-cleaning traveler in the clean air plenum. Type “A” Dynaclones have 3 tiers of bags, and type “B” Dynaclones have 2 tiers of bags. While the cleaning process utilizes a reverse air process, which takes a portion of the bags offline during cleaning, there is no interruption of operation as the cleaning arm travels back and forth. Common replacement parts for a Dynaclone include envelope filter bags, bag hardware including spacers, eyebolts, springs, front and back mullions; multi-seal and roll-clean traveler parts; gaskets, doors, blowers, fans, rotary valves, and screw conveyors. ### Shaker-Cleaned Dust Collector ![shaker-cleaned-dust-collector](https://www.slyinc.com/wp-content/uploads/2024/11/shaker-cleaned-dust-collector.jpg "shaker-cleaned-dust-collector | Sly Air Pollution Control") Sly’s envelope-style shaker collectors were designed for applications where periodic off-line cleaning was practical. The dust would deposit on the outside surface of the bags, and intermittent shaking would dislodge the dust when the system fan was shut down. A Type 360 Shaker had three tiers of bags and a Type 260 Shaker had 2 tiers of bags. Common shaker replacement parts include envelope filter bags, bag hardware including spacers, eyebolts, springs, front and back mullions; shaker cleaning motors and parts, gaskets, doors, blowers, fans, rotary valves, and screw conveyors. [![](https://www.slyinc.com/wp-content/uploads/2024/08/sly-150-history-timeline.png "sly-150-history-timeline | Sly Air Pollution Control")](https://www.slyinc.com/about/our-history/) ### Featured Resources [![](https://www.slyinc.com/wp-content/uploads/2024/08/SLY_WetScrubberBuyersGuideCover.png "SLY_WetScrubberBuyersGuideCover | Sly Air Pollution Control")](https://info.slyinc.com/dry-dust-collection-handbook-1?_gl=1%2A1q5amc%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA0NDEzMi4xNC4xLjE3MzcwNDY2ODcuNy4wLjE5OTE1MjM5MTk.) #### Dry Dust Collection Handbook Preventing product contamination and ensuring worker safety are paramount to manufacturing or processing operations. Growing awareness of the impact of air pollution on health and the environment is driving demand for dust collection systems, so it’s critical for you to know how to navigate industry regulations and solve key challenges. [Read More](https://info.slyinc.com/dry-dust-collection-handbook-1?_gl=1%2A1q5amc%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA0NDEzMi4xNC4xLjE3MzcwNDY2ODcuNy4wLjE5OTE1MjM5MTk.) [![](https://www.slyinc.com/wp-content/uploads/2024/08/drybgcover.png "drybgcover | Sly Air Pollution Control")](https://info.slyinc.com/dust-collector-buyers-guide) #### Dry Dust Collector Buyer’s Guide Demand for dust collection systems is being fueled by growing consumer awareness of the impact of air pollution on health and the environment combined with rapid urbanization and industrialization. A variety of dry dust collection options are available on the market, some of which are optimized for specific industries or applications. [Read More](https://info.slyinc.com/dust-collector-buyers-guide) [![design a dust collection system](https://www.slyinc.com/wp-content/uploads/2024/08/dustcollectionguidecover.png "dustcollectionguidecover | Sly Air Pollution Control")](https://info.slyinc.com/dry-dust-collection-system-design-guide-1?_gl=1%2A1d22pm4%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA0NDEzMi4xNC4xLjE3MzcwNDY2ODcuNy4wLjE5OTE1MjM5MTk.) #### How to Design a Dust Collection System Dust collection systems are essential for many industrial facilities to adhere to clean air standards set by the Federal Clean Air Act, OSHA, and MSHA. Companies also benefit, as clean air results in healthier employees, which increases productivity and employee morale. Designing a system requires a comprehensive look at all of the application’s specifics and environmental requirements. [Read More](https://info.slyinc.com/dry-dust-collection-system-design-guide-1?_gl=1%2A1d22pm4%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA0NDEzMi4xNC4xLjE3MzcwNDY2ODcuNy4wLjE5OTE1MjM5MTk.) ##### Downloads --- - [Application Examples](https://www.slyinc.com/products/dust-collectors/tubejet-baghouse-dust-collectors/tubejet-baghouse-dust-collectors-application-examples/) - [Why Choose Sly? Video](https://www.youtube.com/watch?v=uqA8nRA7tvM) [Need Other Equipment?](#) ## **FAQs – Legacy Dust Collectors** ****What are legacy dust collectors?**** Legacy dust collectors refer to older Sly equipment models that may no longer be manufactured but are still operating in many facilities. ******Can replacement parts still be obtained for legacy collectors?****** Yes. Sly provides replacement components and upgrade solutions to keep legacy collectors operating efficiently. ******When should a legacy dust collector be upgraded?****** Upgrades may be needed when maintenance costs increase, emissions standards change, or improved filtration technology becomes available. ******Can older collectors be retrofitted with modern filter media?****** In many cases, newer filter media can be installed to improve filtration efficiency and reduce pressure drop. ******Does Sly provide engineering support for legacy systems?****** Yes. Sly engineers can evaluate existing systems and recommend upgrades, retrofits, or replacement solutions. --- ### [Explosion Protection Expertise](https://www.slyinc.com/products/dust-collectors/explosion-protection-expertise/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![Sly-dust-explosion-protection-expertise](https://www.slyinc.com/wp-content/uploads/2024/11/Sly-dust-explosion-protection-expertise.jpg "Sly-dust-explosion-protection-expertise | Sly Air Pollution Control") # Explosion Protection Expertise **Helping You Integrate Explosion Protection Solutions**. ## Combustible Dust --- Combustible dust protection is an important consideration for many dust collection applications. Sly has the expertise to help you meet NFPA standards and the intent of the OSHA Combustible Dust National Emphasis Program initiated in 2008. Sly’s dust collection manufacturers and professionals can assist you in all aspects of this challenging issue of explosion protection. As a trusted advisor to our customers, Sly will offer advice and make recommendations when combustible concerns are presented to us. As a custom manufacturer, each dust collection and explosion protection solution is designed according to its specific application and process conditions. ![Dust-Explosion-Pentagon](https://www.slyinc.com/wp-content/uploads/2024/11/Dust-Explosion-Pentagon1.jpg "Dust-Explosion-Pentagon1 | Sly Air Pollution Control") Dust Explosion Pentagon Dust can be combustible. Without proper mitigation strategies and explosion protection designs, industrial dust collectors can be a likely place for explosions to occur. ### Sly’s Combustible Dust Protection Solutions Sly has excellent working relationships with all major combustible dust protection equipment suppliers. We can help our customers integrate explosion protection solutions for our dust collectors within a safe overall installation. Sly-assisted #### Typical Solutions - How to determine if your dust is combustible - Hazard analysis by an explosion protection expert to evaluate system design and identify housekeeping requirements and required documentation. - Documented design calculations - Pred values calculated and documented - Determination of fireball length and clearances required for worker safety - Requirements for vent dusts on indoor applications - Gas-tight construction for inert gas closed-loop systems Sly-provided #### Common Combustible Dust Equipment - Explosion vents designed in accordance with NFPA-68-2013 - Suppression systems designed in accordance with NFPA-69-2014 - Isolation solutions for dusty air inlets, clean air outlets, and dust discharge - Flameless venting or quench tubes - Grounded and/or conductive filter bags - External grounding of housings - Sprinkler systems - Electrical enclosures and wiring to meet NFPA-70-2014 (NEC) #### Request a Quote [Contact Us](https://www.slyinc.com/contact/request-a-quote/) ### Featured Resources [![](https://www.slyinc.com/wp-content/uploads/2024/08/SLY_WetScrubberBuyersGuideCover.png "SLY_WetScrubberBuyersGuideCover | Sly Air Pollution Control")](https://info.slyinc.com/dry-dust-collection-handbook-1?_gl=1%2Aozacih%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA0NDEzMi4xNC4xLjE3MzcwNDY1NjAuNTEuMC4xOTkxNTIzOTE5) #### Dry Dust Collection Handbook Preventing product contamination and ensuring worker safety are paramount to manufacturing or processing operations. Growing awareness of the impact of air pollution on health and the environment is driving demand for dust collection systems, so it’s critical for you to know how to navigate industry regulations and solve key challenges. [Read More](https://info.slyinc.com/dry-dust-collection-handbook-1?_gl=1%2Aozacih%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA0NDEzMi4xNC4xLjE3MzcwNDY1NjAuNTEuMC4xOTkxNTIzOTE5) [![](https://www.slyinc.com/wp-content/uploads/2024/08/drybgcover.png "drybgcover | Sly Air Pollution Control")](https://info.slyinc.com/dust-collector-buyers-guide) #### Dry Dust Collector Buyer’s Guide Demand for dust collection systems is being fueled by growing consumer awareness of the impact of air pollution on health and the environment combined with rapid urbanization and industrialization. A variety of dry dust collection options are available on the market, some of which are optimized for specific industries or applications. [Read More](https://info.slyinc.com/dust-collector-buyers-guide) [![design a dust collection system](https://www.slyinc.com/wp-content/uploads/2024/08/dustcollectionguidecover.png "dustcollectionguidecover | Sly Air Pollution Control")](https://info.slyinc.com/dry-dust-collection-system-design-guide-1?_gl=1%2Aozacih%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA0NDEzMi4xNC4xLjE3MzcwNDY1NjAuNTEuMC4xOTkxNTIzOTE5) #### How to Design a Dust Collection System Dust collection systems are essential for many industrial facilities to adhere to clean air standards set by the Federal Clean Air Act, OSHA, and MSHA. Companies also benefit, as clean air results in healthier employees, which increases productivity and employee morale. Designing a system requires a comprehensive look at all of the application’s specifics and environmental requirements. [Read More](https://info.slyinc.com/dry-dust-collection-system-design-guide-1?_gl=1%2Aozacih%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA0NDEzMi4xNC4xLjE3MzcwNDY1NjAuNTEuMC4xOTkxNTIzOTE5) ##### Downloads --- - [OSHA Instruction](https://www.slyinc.com/wp-content/uploads/2024/09/OSHA-instructionon-on-combustible-dust.pdf) - [OSHA Combustible Dust Poster](https://www.slyinc.com/wp-content/uploads/2024/09/OSHA-combustible-dust-poster.pdf) - [OSHA Combustible Dust Fact Sheet](https://www.slyinc.com/wp-content/uploads/2024/09/OSHA-combustible-dust-fact-sheet-1.pdf) - [OSHA Combustible Dust Fact Sheet – July 2016](https://www.slyinc.com/wp-content/uploads/2024/09/OSHA_combustible_dust_fact_sheet_July_2016.pdf) ## **FAQs – Explosion Protection Expertise** ****Why is explosion protection important in dust collection systems?**** Many industrial dusts are combustible. If dust accumulates and ignites within a collector, it can cause a deflagration that can damage equipment and endanger personnel. ******What explosion protection options are available for dust collectors?****** Common protection methods include explosion vents, flameless vents, isolation valves, spark detection systems, and suppression systems. ******How do flameless explosion vents work?****** Flameless vents release pressure from an explosion while containing flames and hot gases, making them suitable for indoor dust collector installations. ******When is explosion isolation required?****** Isolation devices prevent an explosion in a dust collector from propagating through ductwork into the rest of the facility. ******How do you determine the correct explosion protection strategy?****** Explosion protection depends on dust characteristics such as Kst value, process conditions, collector size, and installation location. --- ### [Retrofits](https://www.slyinc.com/products/dust-collectors/replacement-parts/retrofits/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![sly-baghouse-retrofits](https://www.slyinc.com/wp-content/uploads/2024/11/sly-baghouse-retrofits.jpg "sly-baghouse-retrofits | Sly Air Pollution Control") # Retrofits **Let Us Evaluate Your Old Baghouse or Cartridge Collector.** ## Let Us Update Your Old Dust Collector --- We can re-engineer and modernize existing collectors (Sly and others) for top performance. We have readily available internal parts and can fabricate custom componets to replace old or worn parts. This means we can often re-engineer your baghouse with up-to-date internals and controls while maintaining your old “box.” Give us a call to discuss retrofits for Sly’s air pollution control equipment or other manufacturers. Let us evaluate your old baghouse or cartridge collector for potential new life. #### Request a Quote [Contact Us](https://www.slyinc.com/contact/request-a-quote/) ### Featured Resources [![](https://www.slyinc.com/wp-content/uploads/2024/09/overcoming-dust-wp.webp "overcoming-dust-wp | Sly Air Pollution Control")](https://info.slyinc.com/dust-containment-wp?_gl=1%2A1ial947%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTUzMjYuNTguMC40MTU4MDM1MTE.) #### Overcoming the Most Challenging Industrial Dust Environments Do you know all you can about the challenging industrial dust environment? In this white paper, you’ll learn why being flexible is the great solution for dust collection: The Importance of Dust Control, The Confluence of Kst and Pmax for Combustibility, Conducting a Dust Hazard Analysis, Case Study on a Customized Solution [Read More](https://info.slyinc.com/dust-containment-wp?_gl=1%2A1ial947%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTUzMjYuNTguMC40MTU4MDM1MTE.) [Need Other Equipment?](#) ## **FAQs – Dust Collector Retrofits** ******What is a dust collector retrofit?****** A retrofit upgrades an existing dust collection system with new components such as improved filter media, updated controls, or redesigned inlets to enhance performance. ********When should a facility consider retrofitting a dust collector?******** Retrofits are often recommended when systems experience high pressure drop, frequent filter failures, increasing maintenance costs, or changes in process requirements. ********Can retrofits improve dust collector efficiency?******** Yes. Upgrading filter media, pulse cleaning systems, or airflow design can improve filtration efficiency and reduce energy consumption. ********Are retrofits possible for non-Sly collectors?******** Yes. Sly provides retrofit solutions and replacement components for many third-party dust collection systems. ********What are the benefits of retrofitting vs replacing equipment?******** Retrofits can extend equipment life, improve performance, and reduce capital costs compared to installing an entirely new system. --- ### [Cyclone Dust Collector](https://www.slyinc.com/products/dust-collectors/cyclone-dust-collector/) **Published:** October 28, 2024 **Author:** p1ws **Content:** ![Cyclone-Centrifugal-Dust-Collection](https://www.slyinc.com/wp-content/uploads/2024/11/Cyclone-Centrifugal-Dust-Collection.jpg "Cyclone-Centrifugal-Dust-Collection | Sly Air Pollution Control") # CYCLONE DUST COLLECTOR **Cyclone Dust Collectors are Virtually Maintenance-Free**. ## Sly Cyclones --- Cyclones utilize centrifugal force to draw particulate-laden air into the unit, where the dust is separated from the clean air and directed to the base. Their filterless design makes Sly cyclones highly effective at capturing heavy dust particles, making them perfect for upstream pre-dust collection. This helps extend the life of secondary, downstream dust control systems. Additionally, the filterless design makes Sly Cyclones virtually maintenance-free, eliminating employees needing to open and clean the machine. ![](https://www.slyinc.com/wp-content/uploads/2024/11/cnr-Cyclone_11-6-24-min.jpg "cnr-Cyclone_11-6-24-min | Sly Air Pollution Control") #### Request a Quote [Contact Us](https://www.slyinc.com/contact/request-a-quote/) ### Features & *Benefits* - Centrifugal, cyclonic action provides high-efficiency separation of heavy dust particles. - A compact design with a small footprint requires less space compared to other dust control technologies. - Filterless, low-maintenance design provides an economical dust control solution. CYCLONE Options --- - Explosion Vents - Configurable Hopper, Inlets, Slope/Discharge - Platform, Straight, or Perimeter Access ##### Cyclone Dust Collectors ![](https://www.slyinc.com/wp-content/uploads/2024/12/Cyclone-Explosion-Vent-Combustible-Dust-300x300.jpg) Combustible Dust Explosion Vent ![](https://www.slyinc.com/wp-content/uploads/2024/12/slyclone-iso-rendering-300x300.jpg) Sly Cyclone Rendering ![](https://www.slyinc.com/wp-content/uploads/2024/12/sly-cyclone-installation-300x300.jpg) Upstream Cyclone Installation ![]() Combustible Dust Explosion Vent ![]() Sly Cyclone Rendering ![]() Upstream Cyclone Installation ## **FAQs – Cyclone Dust Collectors** ****How does a cyclone dust collector work?**** Cyclone collectors use centrifugal force to separate dust particles from an airstream. Dust-laden air enters tangentially, creating a vortex that forces heavier particles toward the walls, where they fall into a hopper. ******What types of dust are cyclones best for?****** Cyclones are most effective for **coarse, heavy, or abrasive dust particles** and are commonly used in industries such as aggregates, woodworking, and grain processing. ******Are cyclones used alone or with other collectors?****** Cyclones are frequently used as **pre-collectors ahead of baghouses or cartridge collectors** to remove larger particles and reduce filter loading. ******Do cyclone collectors require filter media?****** No. Cyclones rely on airflow dynamics rather than on filter media, making them low-maintenance and suitable for high-temperature applications. ******What are the advantages of using a cyclone pre-separator?****** Cyclones reduce wear on downstream filters, extend bag life, and improve overall efficiency of the dust collection system. --- ### [Reverse Air Collectors](https://www.slyinc.com/products/dust-collectors/reverse-air-collectors/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![reverse-air-collectors-hero](https://www.slyinc.com/wp-content/uploads/2024/11/reverse-air-collectors-hero.jpg "reverse-air-collectors-hero | Sly Air Pollution Control") # Reverse Air Collectors **Longer Filter Life. High Energy Efficiency**. ## Reverse Air Collector: Efficient Dust Collection Solution --- When energy savings are critical or the availability of quality compressed air is limited, the Sly RAC (reverse air collector) is an ideal option. The RAC uses an integral centrifugal fan to deliver low pressure reverse air to clean the filter bags and does not require compressed air. The advanced cleaning arm with high velocity nozzles rotates continuously providing clean, dry, contaminate free air to each filter bag. The cleaning arm is powered by a direct drive providing long reliable service and carries a 5-year warranty. Sly’s Reverse Air baghouse dust collector excels in challenging applications such as grain, woodworking, recycling, aggregate, and more. The entire baghouse can stay online while cleaning the filters, which are all constantly in operation. With a longer filter life, high energy efficiency, and customization options, the RAC offers excellent value and quality. ![Sly-Reverse-Air-Industrial-Dust-Collector](https://www.slyinc.com/wp-content/uploads/2024/12/Sly-Reverse-Air-Industrial-Dust-Collector.jpg "Sly-Reverse-Air-Industrial-Dust-Collector | Sly Air Pollution Control") #### Request a Quote [Contact Us](https://www.slyinc.com/contact/request-a-quote/) ### Features & *Benefits* - Online cleaning for continuous use - Easy, toolless bag changeouts for convenience - Available in 7 to 14 foot diameter with 8, 10 or 12 foot bag lengths - Self cleaning for low maintenance - Heavy-duty, 10 and 3/16 gauge construction provides long-lasting durability - Direct drive shaft helps prevent energy loss from motor to the fan - High entry inlet maximizes efficiency - Inlet baffles redirect airflow to separate the debris from the air - Perforated cone mimics cyclone air flow rEVERSE aIR Options --- - Air Diversion Abort Gates - Sloped or Flat Roof - Explosion Vents - Explosion Isolation Valve - Platform, Straight, or Perimeter Access - Tangential Entry - Powder Coating - 1,175 sq.ft. – 7,792 sq.ft. Bag Cloth ##### Reverse Air Collector ![](https://www.slyinc.com/wp-content/uploads/2024/12/RAC-dust-capture-system-300x300.jpg) RAC Air Pollution Control ![](https://www.slyinc.com/wp-content/uploads/2024/12/reverse-air-pulsejet-baghouse-fan-300x300.jpg) Reverse Air Fan ![](https://www.slyinc.com/wp-content/uploads/2024/12/Reverse-air-dust-system-300x300.jpg) Reverse Air Dust Collection System ![]() RAC Air Pollution Control ![]() Reverse Air Fan ![]() Reverse Air Dust Collection System ## **FAQs – Reverse Air Collectors** ****What is a reverse air dust collector?**** A reverse air collector cleans filter bags by reversing airflow through the bags rather than using compressed air pulses. ******When should a reverse air collector be used instead of a pulse jet baghouse?****** Reverse air collectors are often preferred when **compressed air is limited or energy savings are a priority**, since they do not rely on pulse air systems. ******What types of processes use reverse air collectors?****** These systems are commonly used in continuous industrial processes such as cement production, power generation, and large material handling systems. ******Do reverse air collectors operate continuously?****** Yes, most reverse air collectors clean compartments sequentially, allowing the system to continue operating while individual sections are cleaned. ******What are the maintenance considerations?****** Reverse air systems typically use longer filter bags and fewer moving parts, which can reduce maintenance requirements compared to other baghouse designs. --- ### [Vertical Cartridge Filter Dust Collector](https://www.slyinc.com/products/dust-collectors/vertical-cartridge-filter-collectors/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/11/Vertical-Cartridge-Filter-Dust-Collection-by-Sly.jpg "Vertical-Cartridge-Filter-Dust-Collection-by-Sly | Sly Air Pollution Control") # Vertical Cartridge Filter Dust Collector **Filter dry, free-flowing dust with Sly VCFs.** ## Vertical Cartridge Filter Collector --- Gravity works in your favor with the Vertical Cartridge filters, allowing dust and debris to fall off rather than gathering on the cartridge’s filter media. VCFs are ideal for many applications where the dust is dry and free-flowing. Dirty air is pulled in from ductwork, and particulates are captured. Clean air is pulled through the filter media and into the clean air plenum, then exits the collector and goes to the return air duct. Dirty air is pulled in from ductwork, and the filters capture particulates. The clean air is pulled through the filter media and into the clean air plenum. The air then exits the collector and goes to the return air duct. Compressed air pulses into the filter, cleaning it from the inside out. The dust cake built on the filter is then knocked down into the grating below or a hopper. ![](https://www.slyinc.com/wp-content/uploads/2024/10/vertical-cartridge-dust-collector.jpg "vertical-cartridge-dust-collector | Sly Air Pollution Control") #### Request a Quote [Contact Us](https://www.slyinc.com/contact/request-a-quote/) ### Features & *Benefits* - High-powered pulse cleaning system blows dust off filters to extend filter life. - No outside bolts help inhibit rust - Even filter loading eliminates the need to rotate dirty filters. - Quick open, tool-less doors provide convenient access - Factory tested and installed cleaning system expedites start-up. - Lift rail door stop keeps doors from closing if rails are not in the proper upright position. - Double gasket design ensures a tight filter seal. - Anti-ramp rails provide the proper filter alignment to prevent overlapping. vcf Options --- - 800 sq.ft. – 48,000 sq.ft. Filter Options - Dust Level Sensor - Indirect and Direct Release Systems - Configurable Hopper Slope/Discharge - Platform, Straight, or Perimeter Access ![VCF filters](https://www.slyinc.com/wp-content/uploads/2024/12/VCF-filters.png "VCF-filters | Sly Air Pollution Control") #### Filter Design Quick-open toolless doors provide simple access to the vertical cartridge filters for maintenance and changeouts. The filters are completely grounded and feature a double-gasketed design for a tight, precise fit. ##### VCF: Vertical Cartridge Filter ![](https://www.slyinc.com/wp-content/uploads/2024/12/Explosion-Protective-Drum-Cartridge-Filter-300x300.jpg) Combustible Dust Explosion Protection Drum ![](https://www.slyinc.com/wp-content/uploads/2024/12/VCF-dust-level-sensor-monitor-300x300.jpg) Optional Dust Level Monitor ![](https://www.slyinc.com/wp-content/uploads/2024/12/vertical-cartridge-filter-abort-gate-300x300.jpg) Air Diversion Gate ![]() Combustible Dust Explosion Protection Drum ![]() Optional Dust Level Monitor ![]() Air Diversion Gate ## **FAQs – Vertical Cartridge Filter Collectors** ****What is a vertical cartridge dust collector used for?**** Vertical cartridge collectors are designed to capture **dry, free-flowing dust** using pleated filter cartridges that provide high filtration efficiency in a compact footprint. ******How does the vertical filter orientation improve performance?****** The vertical configuration allows gravity to help remove dust from the cartridges during pulse cleaning, preventing buildup and extending filter life. ******What industries commonly use cartridge collectors?****** Cartridge collectors are often used in manufacturing processes that produce lighter dust loads, such as metal fabrication, food processing, plastics, pharmaceuticals, and powder handling. ******How are the cartridges cleaned?****** Compressed air pulses clean the cartridges from the inside out, dislodging the dust cake, which then falls into the hopper for removal. ******What maintenance features are included?****** Quick-open, tool-less doors and double-gasket sealing systems provide easy access for cartridge replacement while maintaining a tight seal during operation. --- ### [Tubejet Baghouse Dust Collectors](https://www.slyinc.com/products/dust-collectors/tubejet-baghouse-dust-collectors/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/10/sly-tubejet-baghouse.jpg "sly-tubejet-baghouse | Sly Air Pollution Control") # TubeJet® Baghouse Dust Collectors **On-Line Dust Collection With a Steady Pressure Drop.** ## TubeJet Baghouse Dust Collector Options --- Sly TubeJet dust collectors offer on-line cleaning with an optimized pressure drop. Bag changes are exceptionally easy with our innovative design. We offer a full range of baghouse designs and media choices to solve the toughest pollution control problems, including high temperatures and pressures and corrosives. ### [STJ/SBR – Square Series Pulse Jet Collectors](https://www.slyinc.com/products/dust-collectors/tubejet-baghouse-dust-collectors/stj-sbr-square-series-pulse-jet-collectors/) [![STJ Tubejet Dust Collector](https://www.slyinc.com/wp-content/uploads/2024/11/STJ-Sly-Tubejet.jpg "STJ-Sly-Tubejet | Sly Air Pollution Control")](https://www.slyinc.com/products/dust-collectors/tubejet-baghouse-dust-collectors/stj-sbr-square-series-pulse-jet-collectors/) Sly’s Square/Rectangular TubeJet pulse jet bag house dust collectors are easy to install. Both the top bag removal STJ and the side bag removal SBR models ship complete with a factory-installed adjustable solid state sequential or on-demand pulse timer with conduit and prewired solenoids and factory-installed air header and pulse valves complete with tubing. Rugged construction is standard. ### [CTR/CBR – Cylindrical Pulse Jet Collectors](https://www.slyinc.com/products/dust-collectors/tubejet-baghouse-dust-collectors/ctr-cbr-cylindrical-pulse-jet-collectors/) [![CTR-TubeJet-Dust-Collectors](https://www.slyinc.com/wp-content/uploads/2024/11/CTR-TubeJet-Dust-Collectors.jpg "CTR-TubeJet-Dust-Collectors | Sly Air Pollution Control")](https://www.slyinc.com/products/dust-collectors/tubejet-baghouse-dust-collectors/ctr-cbr-cylindrical-pulse-jet-collectors/) Sly cylindrical collectors are designed for demanding process systems. Their all-welded construction permits vacuum/pressure ranges of 20” w.g. to 17” Hg. Benefits include no corners for superior cleanability, round walls eliminating “cold spots” and condensation in high-heat applications, and a conical hopper promoting easy discharge of collected dust. #### Request a Quote [Contact Us](https://www.slyinc.com/contact/request-a-quote/) ### Features & *Benefits* - 50-200,000 ACFM capacities with 20” w.g. to 5 PSIG and higher ensures optimal air pollution control - Radial low velocity dual stage inlet with diffuser design decreases turbulence for more efficient cleaning - Wide range of flow capacities in a single, shop assembled module - Adjustable solid state timer fine tunes cleaning system for optimum pulse-cleaning - Versatile design handles high temperatures, pressures and corrosives - Snap-ring bag design provides a tight filter seal with high efficiency - Factory insulation prolongs bag life and helps to prevent damage Tubejet Options --- - Side or Top Bag Removal - Carbon, Stainless, or Alloy Construction - Wide Range of Fire Prevention Accessories - Configurable Hopper Slope/Discharge - Platform, Straight, or Perimeter Access - Hatch Tops CYLINDRICAL Options --- - Tangential Inlet for High Dust Loading - Dished or Flat Head - ANSI Flanges (150 or 300lb.) ![fabric guide thumbnail](https://www.slyinc.com/wp-content/uploads/2024/12/fabric-guide-thumbnail.jpg "fabric-guide-thumbnail | Sly Air Pollution Control") Download our **Fabric Filter Properties Guide** to compare fabric characteristics to choose the best for your application. [Download](https://www.slyinc.com/wp-content/uploads/2024/12/Properties-of-Filtration-Fabrics-12-24.pdf) ![chemical](https://www.slyinc.com/wp-content/uploads/2024/12/chemical-thumbnail.jpg "chemical-thumbnail | Sly Air Pollution Control") Download our **Chemical Compatibility Guide** to compare fabric choice suitability for different chemicals. [Download](https://www.slyinc.com/wp-content/uploads/2024/12/Chemical-Compatibility-Fabric-Guide-1224.pdf) ### Featured Resources [![](https://www.slyinc.com/wp-content/uploads/2024/08/SLY_WetScrubberBuyersGuideCover.png "SLY_WetScrubberBuyersGuideCover | Sly Air Pollution Control")](https://info.slyinc.com/dry-dust-collection-handbook-1) #### Dry Dust Collection Handbook Preventing product contamination and ensuring worker safety are paramount to manufacturing or processing operations. Growing awareness of the impact of air pollution on health and the environment is driving demand for dust collection systems, so it’s critical for you to know how to navigate industry regulations and solve key challenges. [Read More](https://info.slyinc.com/dry-dust-collection-handbook-1) [![](https://www.slyinc.com/wp-content/uploads/2024/08/drybgcover.png "drybgcover | Sly Air Pollution Control")](https://info.slyinc.com/dust-collector-buyers-guide) #### Dry Dust Collector Buyer’s Guide Demand for dust collection systems is being fueled by growing consumer awareness of the impact of air pollution on health and the environment combined with rapid urbanization and industrialization. A variety of dry dust collection options are available on the market, some of which are optimized for specific industries or applications. [Read More](https://info.slyinc.com/dust-collector-buyers-guide) [![design a dust collection system](https://www.slyinc.com/wp-content/uploads/2024/08/dustcollectionguidecover.png "dustcollectionguidecover | Sly Air Pollution Control")](https://info.slyinc.com/dry-dust-collection-system-design-guide-1) #### How to Design a Dust Collection System Dust collection systems are essential for many industrial facilities to adhere to clean air standards set by the Federal Clean Air Act, OSHA, and MSHA. Companies also benefit, as clean air results in healthier employees, which increases productivity and employee morale. Designing a system requires a comprehensive look at all of the application’s specifics and environmental requirements. [Read More](https://info.slyinc.com/dry-dust-collection-system-design-guide-1) ##### Downloads --- - [Download TubeJet Application Guide Brochure](https://www.slyinc.com/wp-content/uploads/2024/08/TubeJetDustCollector.pdf) - [Application Examples](https://www.slyinc.com/products/dust-collectors/tubejet-baghouse-dust-collectors/tubejet-baghouse-dust-collectors-application-examples/) - [Fabric Filter Media Options](/products/dry-dust-collector-filter-bags/filter-bag-finishes/) - [Why Choose Sly? Video](https://www.youtube.com/watch?v=uqA8nRA7tvM) ## **FAQs – TubeJet® Baghouse Dust Collectors** ****How does a TubeJet pulse jet baghouse dust collector work?**** TubeJet collectors use compressed air pulses to clean filter bags while the system remains online. Dust collects on the filter media while clean air passes through the bags and exits the collector. Periodic pulses dislodge the dust cake, allowing it to fall into the hopper for disposal. ******What applications are best suited for TubeJet baghouse collectors?****** TubeJet collectors are designed for demanding industrial environments, including high temperatures, corrosive gases, and high-dust-loading processes such as cement, minerals, metals, chemicals, and bulk solids handling. ******What maintenance advantages do TubeJet collectors provide?****** Sly TubeJet baghouses feature a snap-ring bag design and tool-less bag replacement system, allowing maintenance teams to replace filters quickly and reduce downtime. ******What airflow capacities can TubeJet collectors handle?****** TubeJet baghouse systems support airflow capacities ranging from roughly **50 to more than 200,000 ACFM**, depending on configuration and application requirements. ******What design options are available?****** TubeJet collectors can be configured with square or cylindrical housings, top- or side-bag removal, various filter media options, and accessories such as explosion protection, insulation, and custom hopper discharge systems. --- ### [Mining & Minerals](https://www.slyinc.com/industries/mining-minerals/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/09/mining-minerals-processing-dust.jpg "mining-minerals-processing-dust | Sly Air Pollution Control") # Mining & Minerals **With Sly, Dust Collection Has Never Been Easier.** ## Dust Collection for Mining & Mineral Processing --- Controlling dust emissions from mining processing is a challenge. Equipment like crushers, screens, and conveyor transfer points can all contribute to dust pollution. Mining companies collaborate with regulatory bodies like the Mine Safety and Health Administration (MSHA) and the Environmental Protection Agency (EPA) to address this concern. These agencies impose strict limits on dust emissions, and exceeding these limits can result in production disruptions and fines. Thus, selecting appropriate [dust control equipment](https://www.slyinc.com/dust-collectors/) is crucial. Some mining processes may require the capture of gas contaminants. Wet scrubbers are highly effective at collecting these contaminants and neutralizing them. Reducing emissions helps comply with regulations, promotes the well-being of personnel, and improves air quality in surrounding areas. It also minimizes wear and tear on production equipment. By implementing an efficient dust collection system, mining operations can ensure reliable performance and simplified maintenance. ![](https://www.slyinc.com/wp-content/uploads/2024/07/mining-minerals-dust-control-white.png "mining-minerals-dust-control-white | Sly Air Pollution Control") Dust Collectors for the Mining Industry: What Every Engineer Should Know ![](https://www.slyinc.com/wp-content/uploads/2026/03/mining-shadow-249x300.jpg "mining shadow") [Download White Paper](https://info.slyinc.com/dust-collectors-for-mining-white-paper) ### Dust Collection Equipment ![](https://www.slyinc.com/wp-content/uploads/2025/01/STJ-Mining-Dust.jpg) STJ Dust Collectors ![](https://www.slyinc.com/wp-content/uploads/2025/01/miineral-processing-wet-scrubbers.jpg) Venturi Wet Scrubbers ![](https://www.slyinc.com/wp-content/uploads/2025/01/sly-spout-load-truck.jpg) Loading Spouts ![](https://www.slyinc.com/wp-content/uploads/2024/07/Air-Pollution-Control-Gradient.png "Air-Pollution-Control-Gradient | Sly Air Pollution Control") --- With Sly, dust collection has never been easier. Filter bag changes require no tools with Sly pulse jet top bag removal collectors. The TubeJet’s unique tool-less pulse pipe connection and rugged snap ring bag assembly make it possible. Large weather proof doors on the collector’s roof allow easy access for inspection and maintenance. Sly offers a complete line of dust collection equipment to keep mining operations clean from potentially combustible, hazardous dust and remove or recycle it into production. Contact us to design, fabricate, and install a dust collection system tailored to your mining and mineral processing operations. [Contact Sly](/contact) ![mining](https://www.slyinc.com/wp-content/uploads/2024/09/mining-excavator.jpg "mining-excavator | Sly Air Pollution Control") ### Mining Applications North America primarily focuses on sand, gravel, stone, and coal mining, with copper and iron extraction being the most common metal mining practices. Heavy and abrasive dust is generated at various stages of the mining process, including excavation sites and blending operations. The mining industry can minimize environmental impact and protect the workforce and surrounding communities by adopting effective dust control measures. **The mining industry encompasses various excavation sites, including:** - Surface mining - Open-pit mining - Quarrying - Mega-mining - Open-cast mining - Open-cut mining ### Solutions for Mineral & Mining Dust Collection A dust collection system is not only essential for safety and environmental concerns in mining and mineral processing operations but also brings many benefits. It enhances the overall process efficiency by minimizing dust accumulation in equipment and ducts, reducing clogging, excessive maintenance, and downtime. Moreover, implementing a dust collection system aids operators in adhering to regulatory requirements, ensuring process emissions remain within acceptable limits. The collected dust can also be repurposed as a fuel source or feedstock for other processes, fostering a closed-loop system that curbs waste and decreases operating costs. At Sly, we offer a comprehensive range of top-quality dust collection equipment, both wet and dry, designed to safeguard mineral and mining processing operations from potentially combustible and hazardous dust. Our systems efficiently remove or recycle dust, promoting cleanliness and productivity. [Contact Sly](https://www.slyinc.com/contact/) today, and let us tailor a dust collection system to meet the unique needs of your bioprocessing operations. ### Case Studies & White Papers ##### Durable Loading Spouts Stands Up To Salt Air in Cayman Islands We just can’t afford any downtime. When the ship’s in port, we have to move,” says Gary Longenbach, Operations Manager at National Cement Ltd., Georgetown, Cayman Islands. [Download Case Study](https://www.slyinc.com/resources/case-studies/durable-loading-spouts-stands-up-to-salt-air-in-cayman-islands/) ##### Efficient Dryer Ventilation with Sly’s Custom Collector A limestone supplier was looking for a way to meet air pollution emission limits while efficiently and effectively optimizing their production process. The firm needed a way to collect and recycle fines generated from a fluid bed dryer that were released during the drying and cooling process. [Download Case Study](https://www.slyinc.com/resources/case-studies/efficient-dryer-ventilation-with-slys-custom-collector/) --- ### [Contact](https://www.slyinc.com/contact/) **Published:** July 10, 2024 **Author:** Mike Eaton **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/10/contact-sly-air-pollution-control-equipment.jpg "contact-sly-air-pollution-control-equipment | Sly Air Pollution Control") # CONTACT SLY **Get in Touch with the Air Pollution Control Experts.** With our breadth and depth of knowledge and expertise in the dust collection industry, you can be assured that we can answer any questions you may have. We look forward to hearing from you. ## Contact Our Experts --- **SLY, LLC. Corporate Headquarters** 8300 Dow Circle, Suite 600 Strongsville, OH 44136 **Phone** Phone: [800-334-2957](tel:1-800-334-2957) \| [440-891-3200](tel:1-440-891-3200) Fax: 440-891-3210 **Aftermarket Parts** Phone: [800-200-9530](tel:1-800-200-9530) **SLY Manufacturing** 4526 Reed Road Mathiston, MS 39752 [](https://www.linkedin.com/company/sly-llc/) [](https://www.youtube.com/user/wwslyinc) [](https://twitter.com/tweetslyinc) [](https://www.facebook.com/pages/Sly-Inc/96567389482) --- ### [Dry Dust Collector Filter Bags](https://www.slyinc.com/products/dry-dust-collector-filter-bags/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![filter-bags-dust-collectors](https://www.slyinc.com/wp-content/uploads/2024/11/filter-bags-dust-collectors.jpg "filter-bags-dust-collectors | Sly Air Pollution Control") # Dry Dust Collector Filter Bags **Filter Bags for Maximum Effectiveness**. ## Types of Dust Collector Filter Bags --- The information provided on this website is intended as a guide for filter bag applications. SLY, LLC. makes no guarantee about the performance or results you can expect from the application of this information unless provided in writing from our staff. The type of filter bag you’ll need to operate your dust collector at maximum effectiveness and efficiency will depend on your machine type and the specific operating conditions. See below for more information on what filter bag is best for your application. ### [Cotton (CT)](https://www.slyinc.com/products/dry-dust-collector-filter-bags/cotton-ct/) [![cotton fabric](https://www.slyinc.com/wp-content/uploads/2024/09/cotton.jpg "cotton | Sly Air Pollution Control")](https://www.slyinc.com/products/dry-dust-collector-filter-bags/cotton-ct/) **Cotton (woven)** Normal maximum continuous operating temperature is 180°F. Used mostly on shaker-type collectors, general applications include cleaning rooms, atmospheric air cleaning, woodworking applications, cement and rock products, and other general applications handling ambient air. ### [Polyester (PE)](https://www.slyinc.com/products/dry-dust-collector-filter-bags/polyester-pe/) [![polyester](https://www.slyinc.com/wp-content/uploads/2024/09/polyester.jpg "polyester | Sly Air Pollution Control")](https://www.slyinc.com/products/dry-dust-collector-filter-bags/polyester-pe/) **Polyester** Normal maximum continuous operating temperature is 275°F. Polyester felts offer excellent resistance to chemicals, abrasion, and dry heat degradation. They offer exceptional dimensional stability and are the most common filter bags used today. ### [High Efficiency Felts (SlyHE)](https://www.slyinc.com/products/dry-dust-collector-filter-bags/high-efficiency-felts-slyhe/) [![](https://www.slyinc.com/wp-content/uploads/2024/09/felt.jpg "felt | Sly Air Pollution Control")](https://www.slyinc.com/products/dry-dust-collector-filter-bags/high-efficiency-felts-slyhe/) **High Efficiency Felts (SlyHE, MPS)** When you need a more efficient filter bag, but don’t want to pay the extreme cost of a PTFE membrane filter, Sly offers its “SlyHE” felt. ### [Polypropylene (PP)](https://www.slyinc.com/products/dry-dust-collector-filter-bags/polypropylene-pp/) [![polypropylene](https://www.slyinc.com/wp-content/uploads/2024/09/PP.jpg "PP | Sly Air Pollution Control")](https://www.slyinc.com/products/dry-dust-collector-filter-bags/polypropylene-pp/) Normal maximum continuous operating temperature is 170°F. Polypropylene felt is used for general applications where chemicals and moisture attack other fibers. Polypropylenes offer high strength and excellent resistance to most acids and alkalis. ### [Nylon (NYL)](https://www.slyinc.com/products/dry-dust-collector-filter-bags/nylon-nyl/) [![nylon](https://www.slyinc.com/wp-content/uploads/2024/09/nylon.jpg "nylon | Sly Air Pollution Control")](https://www.slyinc.com/products/dry-dust-collector-filter-bags/nylon-nyl/) **Nylon (Cerex®)** Normal maximum continuous operating temperature is 250°F. Nylon felt is typically used for highly abrasive dust applications. It has good resistance to alkalis under most conditions, but most mineral oxides cause degradation and partial decomposition. ### [Acrylic (AC)](https://www.slyinc.com/products/dry-dust-collector-filter-bags/acrylic-ac/) [![acrylic](https://www.slyinc.com/wp-content/uploads/2024/09/acrylic.jpg "acrylic | Sly Air Pollution Control")](https://www.slyinc.com/products/dry-dust-collector-filter-bags/acrylic-ac/) **Acrylic (Homopolymer Acrylic Felt)** Normal maximum continuous operating temperature is 275°F. General applications include Dryers, Electric furnaces, Aluminum reduction, and Primary or secondary smelting. The chemical resistance is satisfactory to most mineral and organic acids. ### *High-Temperature* Filter Media Choices Click on the media name below for media details, finish types, and available fabric weights. ### [Aramid (MX)](https://www.slyinc.com/products/dry-dust-collector-filter-bags/aramid-mx/) [![aramid](https://www.slyinc.com/wp-content/uploads/2024/09/aramid.jpg "aramid | Sly Air Pollution Control")](https://www.slyinc.com/products/dry-dust-collector-filter-bags/aramid-mx/) **Aramid (Nomex®)** Normal maximum continuous operating temperature is 375°F. General applications for Aramid felt include Highly abrasive dust applications, Electric arc furnaces, High-temperature dryers, Cupolas, and chemical applications where high temperatures exist. ### [Fiberglass (FG)](https://www.slyinc.com/products/dry-dust-collector-filter-bags/fiberglass-fg/) [![](https://www.slyinc.com/wp-content/uploads/2024/09/fiberglass.jpg "fiberglass | Sly Air Pollution Control")](https://www.slyinc.com/products/dry-dust-collector-filter-bags/fiberglass-fg/) Normal continuous operating temperature is 500°F. General applications include Cement kilns, High-temperature dryers, Carbon black reactors, Power plants, and Electric furnaces. Fiberglass has excellent resistance to most acids, but is attacked by hydrofluoric acid. ### [P-84 (PM)](https://www.slyinc.com/products/dry-dust-collector-filter-bags/p-84-pm/) [![](https://www.slyinc.com/wp-content/uploads/2024/09/p84.jpg "p84 | Sly Air Pollution Control")](https://www.slyinc.com/products/dry-dust-collector-filter-bags/p-84-pm/) **P84® (Polyimide)** Normal maximum continuous operating temperature is 500°F. Common applications for this felt include: smelters, dryers, coal-fired boilers, incinerators, kilns, and calciners. P-84 is nonflammable and not hydroscopic. ### [PPS (Polyphenylene Sulfide)](https://www.slyinc.com/products/dry-dust-collector-filter-bags/pps-polyphenylene-sulfide/) [![](https://www.slyinc.com/wp-content/uploads/2024/09/pps.jpg "pps | Sly Air Pollution Control")](https://www.slyinc.com/products/dry-dust-collector-filter-bags/pps-polyphenylene-sulfide/) **PPS (Polyphenylene Sulfide)** (Commonly known brands: Ryton® or Procon®) Normal maximum continuous operating temperature is 375°F. Common applications include Coal-fired boilers, Incinerators, Fluidized bed systems, cement mills, oil and gas firings, asphalt plants, and Pulverized coal injection systems. ### [Teflon (TX)](https://www.slyinc.com/products/dry-dust-collector-filter-bags/teflon-tx/) [![](https://www.slyinc.com/wp-content/uploads/2024/09/teflon.jpg "teflon | Sly Air Pollution Control")](https://www.slyinc.com/products/dry-dust-collector-filter-bags/teflon-tx/) **Teflon® (Fluorocarbon fiber)** Normal maximum continuous operating temperature is 500°F. Generally used for severe chemical environments at high temperatures. Common applications include coal-fired power plants, cement production, and steel foundries. ### [SlyMax](https://www.slyinc.com/products/dry-dust-collector-filter-bags/slymax/) [![](https://www.slyinc.com/wp-content/uploads/2024/09/slymax.jpg "slymax | Sly Air Pollution Control")](https://www.slyinc.com/products/dry-dust-collector-filter-bags/slymax/) If you need a better efficiency than standard 16 oz. polyester will provide, but don’t need the ultra-high efficiency of SlyHe (High Efficiency) or a PTFE membrane bag (SlyTex), try our 16 or 18 oz. /yd2 duo-density polyester felt (SlyMax). ### [Filter Bag Finishes](https://www.slyinc.com/products/dry-dust-collector-filter-bags/filter-bag-finishes/) [![](https://www.slyinc.com/wp-content/uploads/2024/09/filter-bag-finishes.jpg "filter bag finishes | Sly Air Pollution Control")](https://www.slyinc.com/products/dry-dust-collector-filter-bags/filter-bag-finishes/) Sly’s finish treatments can greatly improve your filter bag life, cake release, resistance to abrasion, static dissipation, and protection from harsh application conditions. Our fabric treatments combined with various medias of different types and weight can provide the best possible filter media choice for your demanding application. How a fabric filter media is finished depends upon the desired physical specifications, surface finish and requirements of the application. The information provided on this website is intended as a guide for filter bag applications. SLY, LLC. makes no guarantee about the performance or results you can expect from the application of this information unless provided in writing from our staff. Need Help Selecting Filter Media? [Ask The Experts](/contact) ###### Featured Resources [![](https://www.slyinc.com/wp-content/uploads/2024/08/SLY_WetScrubberBuyersGuideCover.png "SLY_WetScrubberBuyersGuideCover | Sly Air Pollution Control")](https://info.slyinc.com/dry-dust-collection-handbook-1?_gl=1%2A587kf2%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzEyMzE1Ni4xNi4xLjE3MzcxMjUzNDQuNDUuMC4yMzU0NTQxNjE.) #### Your Comprehensive Guide to Dust Collector Maintenance Now that you have the right dust collection system designed and installed, you want to make sure that it’s running at its optimal efficiency. For improved performance and reliability of your dust collection equipment, Sly recommends a schedule of routine inspections and the timely repair of damaged or malfunctioning equipment. [Read More](https://info.slyinc.com/dry-dust-collection-handbook-1?_gl=1%2A587kf2%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzEyMzE1Ni4xNi4xLjE3MzcxMjUzNDQuNDUuMC4yMzU0NTQxNjE.) [![](https://www.slyinc.com/wp-content/uploads/2024/09/sly-resource-thumb-maintenance-checklist-for-a-better-baghouse-parts-down-campaign.webp "sly-resource-thumb-maintenance-checklist-for-a-better-baghouse-parts-down-campaign | Sly Air Pollution Control")](https://info.slyinc.com/maintenance-checklist-for-a-better-baghouse-download-1?_gl=1%2A587kf2%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzEyMzE1Ni4xNi4xLjE3MzcxMjUzNDQuNDUuMC4yMzU0NTQxNjE.) #### Maintenance Checklist for a Better Baghouse Now that you have the right dust collection system designed and installed, you want to make sure that it’s running at its optimal efficiency. For improved performance and reliability of your dust collection equipment, Sly recommends a schedule of routine inspections and the timely repair of damaged or malfunctioning equipment. [Read More](https://info.slyinc.com/maintenance-checklist-for-a-better-baghouse-download-1?_gl=1%2A587kf2%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzEyMzE1Ni4xNi4xLjE3MzcxMjUzNDQuNDUuMC4yMzU0NTQxNjE.) [![](https://www.slyinc.com/wp-content/uploads/2024/09/overcoming-dust-wp.webp "overcoming-dust-wp | Sly Air Pollution Control")](https://info.slyinc.com/dust-containment-wp?_gl=1%2A18jwcwe%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzEyMzE1Ni4xNi4xLjE3MzcxMjUzNDQuNDUuMC4yMzU0NTQxNjE.) #### Overcoming the Most Challenging Industrial Dust Environments Do you know all you can about the challenging industrial dust environment? In this white paper, you’ll learn why being flexible is the excellent solution for dust collection: The Importance of Dust Control, The Confluence of Kst and Pmax for Combustibility, Conducting a Dust Hazard Analysis, Case Study on a Customized Solution [Read More](https://info.slyinc.com/dust-containment-wp?_gl=1%2A18jwcwe%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzEyMzE1Ni4xNi4xLjE3MzcxMjUzNDQuNDUuMC4yMzU0NTQxNjE.) ## **FAQs – **Dry Dust Collector Filter Bags**** ****What types of filter bag media are available for dry dust collectors?**** We offer a wide range of media, including **polyester (PE), polypropylene (PP), aramid (Nomex®), acrylic, nylon (Cerex®), and high-efficiency felts (SlyHE/MPS)** – each engineered for different temperature ranges, chemical exposure, and dust characteristics. Choosing the right media ensures optimal performance and longer bag life. ******How do I choose the right filter bag for my application?****** Selecting the right filter bag depends on: - **Operating temperature** - **Dust type and abrasiveness** - **Chemical exposure** - **Moisture content** Our engineers evaluate these factors to recommend media and bag styles that match your system’s airflow, duty cycle, and environmental conditions. ******Can I use these filter bags in any type of dust collector?****** Yes, Sly supplies filter bags compatible with most dry dust collectors, including baghouses, cartridge collectors, and shaker systems. We also provide guidance on media selection and sizing to ensure proper fit and performance. ******What are the benefits of higher-efficiency filter media like SlyHE or MPS?****** High-efficiency felts (such as SlyHE and MPS) offer **micro-pore filtration** that captures finer particulate while maintaining airflow and reducing pressure drop. They provide a cost-effective alternative to PTFE media for fine, free-flowing dust and liquid slurry applications. ******How often should filter bags be replaced?****** Bag life varies with dust load, operating conditions, and media type. You should monitor: - **Pressure drop trends** - **Filter blinding** - **Physical wear** When performance drops or media shows abrasion or chemical degradation, replacement is recommended to maintain compliance and efficiency. Sly can help develop a maintenance and replacement schedule. ********Does Sly offer aftermarket support and parts?******** Absolutely. We provide a comprehensive range of **OEM-quality filter bags, cages, valves, timer boards, and related parts**, plus aftermarket support including **media upgrades, retrofit kits, and performance troubleshooting** to help extend collector life and reduce downtime. --- ### [Industrial Bulk Solids Loading Spouts](https://www.slyinc.com/products/industrial-bulk-solids-loading-spouts/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/10/loading-spout-hero.jpg "loading-spout-hero | Sly Air Pollution Control") # Industrial Bulk Solids Loading Spouts **Powder & Bulk Solids Material Handling.** ## [Industrial Bulk Solids Loading Spouts](#) --- Whether you’re loading or stacking bulk materials, Sly makes a spout that will handle any dry material you need to move. Sly spouts are ideal for radial stacking or loading into railroad cars, trucks, ships, barges, containers and barrels. Sly bulk material loading spouts let you move powdered chemicals, cements, grain products, sand, gravel, coal or any other dry bulk material–without dust. ![](https://www.slyinc.com/wp-content/uploads/2024/11/Sly-Industrial-Loading-Spout.jpg "Sly-Industrial-Loading-Spout | Sly Air Pollution Control") #### Request a Quote [Contact Us](https://www.slyinc.com/contact/request-a-quote/) ### Features & *Benefits* - Four cable hoist drive offers enhanced stability and improved cable service over traditional two and three cable hoist drives - Center mounted motor constructed from A36 mild steel is positioned beneath the main pan housing for protection from environmental elements - Computer numerical control machined pulleys with rounded edges and precision cable grooves for long-lasting durability - Low profile inner support rings and extruded outer support rings fastened with high performance clamping versus traditional fastening using nuts, bolts, screws or rivets - Internal cone design allows cones to stack as the spout retracts to a low profile for maximum overhead clearance - Outer sleeve encompasses the spout’s internal stacking cones and contains fugitive dust generated during the loading process Options --- - Outer sleeves material options include Vinyl (PVC)-coated polyester (18 & 22 oz.), Hypalon synthetic rubber -40° F – 220° F \| -40° C – 105° C, Silicone fiberglass for high temperature materials, and Neoprene Polyester (ATEX) - Steel pegs in lieu of standard u-bolt and nut harness guides for food applications - Available in a variety of sizes - 3 Motor Voltage Options (400 volt/50 hertz, 460 volt/60 hertz, 575 volt/60 hertz) ##### Have a *Legacy Loading Spout* unit and need support? Please [**contact us**](https://www.slyinc.com/contact/) with any questions, parts or service requests, or other inquiries related to Sly Legacy Loading Spouts. ![](https://www.slyinc.com/wp-content/uploads/2024/11/legacy-industrial-loading-spout.jpg "legacy-industrial-loading-spout | Sly Air Pollution Control") ##### Downloads --- - [Loading Spouts Brochure](https://www.slyinc.com/wp-content/uploads/2025/01/Sly_Loading-Spouts-Web.pdf) ## **FAQs – **Industrial Bulk Solids Loading Spouts**** ****What are industrial bulk solids loading spouts used for?**** Bulk solids loading spouts are used to transfer powders and granular materials (such as cement, sand, grain, limestone, and chemicals) into trucks, railcars, barges, or containers with minimal dust emission. They help control fugitive dust, improve housekeeping, and support compliance with air quality standards. ******How do Sly’s loading spouts reduce dust during material transfer?****** Sly spouts incorporate a **sealed sleeve system** that captures dust at the drop point. The sleeve closes around the receiving vessel, reducing air turbulence and preventing material escape. Heavy-duty hoists and support rings maintain consistent alignment, even under harsh conditions. ******What types of materials can be handled with these spouts?******  Sly loading spouts handle a wide range of dry solids, including: - Powders and dusts - Aggregates (sand, gravel) - Cement and mineral products - Grain and agricultural products - Chemical powders - Different sleeve materials (PVC, Hypalon, silicone-fiberglass, neoprene) can be selected based on **temperature, abrasion, and chemical exposure**. ******Are Sly’s loading spouts customizable?****** Yes. We offer multiple options, including **sleeve materials**, hoist configurations, size ranges, and motor voltages. This ensures the system matches your **facility layout, transfer height, and environmental conditions**. ******Do loading spouts help improve regulatory compliance?****** Absolutely. By reducing **fugitive dust emissions** during loading, these systems help facilities maintain compliance with **OSHA and EPA standards**, support safer working environments, and minimize cleanup costs. ********How do I determine the right loading spout for my application?******** Consider material characteristics (e.g., particle size, abrasiveness), transfer height, enclosure type, and environmental factors such as temperature and moisture. Sly’s engineers can analyze your process and recommend the right spout size, sleeve material, and configuration – or provide a **custom quote** tailored to your site. --- ### [Industrial Wet Scrubbers](https://www.slyinc.com/products/industrial-wet-scrubbers/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/10/wet-scrubber-hero.jpg "wet-scrubber-hero | Sly Air Pollution Control") # Industrial Wet Scrubbers **Remove Vapors, Gases & Particulate.** ## Industrial Wet Scrubber Products --- ### [Impinjet® Wet Scrubbers](https://www.slyinc.com/products/industrial-wet-scrubbers/impinjet-wet-scrubber/) [![](https://www.slyinc.com/wp-content/uploads/2024/09/wet-impinjet-thumbnail.jpg "wet-impinjet thumbnail | Sly Air Pollution Control")](https://www.slyinc.com/products/industrial-wet-scrubbers/impinjet-wet-scrubber/) Sly Impinjet wet scrubbers clean, cool, and absorb vapors and gases from incoming airstreams, as well as collect particulates. High collection efficiencies (99% @5 microns) are achieved with low water consumption and minimum pressure drop. Capacities to 200,000+ CFM. ### [Venturi Wet Scrubber](https://www.slyinc.com/products/industrial-wet-scrubbers/venturi-wet-scrubber/) [![](https://www.slyinc.com/wp-content/uploads/2024/09/wet-venturi.jpg "wet-venturi | Sly Air Pollution Control")](https://www.slyinc.com/products/industrial-wet-scrubbers/venturi-wet-scrubber/) The Sly Venturi Scrubber efficiently collects fine particulate and mists. Scrubbing liquid is atomized into fine droplets. Adjustable throats for performance optimization are standard. Capacities to 76,000+ CFM per unit. Designs are available for high-temperature, highly corrosive applications. Venturis can be coupled with Impinjet scrubbers to achieve maximum efficiencies. ### [Eductor Wet Scrubber](https://www.slyinc.com/products/industrial-wet-scrubbers/eductor-wet-scrubber/) [![wet eductor](https://www.slyinc.com/wp-content/uploads/2024/09/wet-eductor.jpg "wet- eductor | Sly Air Pollution Control")](https://www.slyinc.com/products/industrial-wet-scrubbers/eductor-wet-scrubber/) Eductor scrubbers are designed to remove soluble gases and particulate matter by inducing a gas flow using a high-pressure liquid focused into a venturi throat. They can also be used for direct-contact condensation. A high liquid flow rate makes the Sly eductor particularly appropriate for collecting sticky and/or gummy particulates and gases that decompose upon contact with water, such as SiCl4 and H2SiF6. ### [Packed Tower Wet Scrubber](https://www.slyinc.com/products/industrial-wet-scrubbers/packed-tower-wet-scrubber/) [![](https://www.slyinc.com/wp-content/uploads/2024/10/packed-tower-thumb.jpg "packed tower thumb | Sly Air Pollution Control")](https://www.slyinc.com/products/industrial-wet-scrubbers/packed-tower-wet-scrubber/) Packed tower scrubbers (also known as packed bed or packed column scrubbers) are designed to chemically scrub contaminants from gas streams. Internal packing in the scrubber housing provides a large wetted surface area to induce intimate contact between the contaminated gas and the scrubbing liquid. #### More Options ### [FRP Wet Scrubbers](https://www.slyinc.com/products/industrial-wet-scrubbers/frp-wet-scrubbers/) [![](https://www.slyinc.com/wp-content/uploads/2024/10/FRP-THumbnail.jpg "FRP THumbnail | Sly Air Pollution Control")](https://www.slyinc.com/products/industrial-wet-scrubbers/frp-wet-scrubbers/) Sly FRP (Fiberglass Reinforced Plastic) Wet Scrubbers offer a practical and durable solution for capturing and neutralizing hazardous components from industrial exhaust gases before their release into the atmosphere. The composite materials used for FRP wet scrubbers provide both chemical and UV resistance. Although all Sly wet scrubbers can be fabricated from FRP, only packed towers are offered to capture gases. FRP scrubbers efficiently capture or absorb chemicals such as volatile organic compounds (VOCs) and acidic, alkaline, and corrosive gases. The compounds are neutralized to protect the workforce environment and equipment from corrosion. The corrosion-resistant property alone makes FRP wet scrubbers especially suited to operations involving aggressive chemicals at different humidity levels. FRP scrubbers are used throughout a wide range of industrial applications to absorb corrosive and hazardous gas compounds or mitigate nuisance odors. [Learn More](https://www.slyinc.com/products/industrial-wet-scrubbers/frp-wet-scrubbers/) ### [Scrubber Parts](https://www.slyinc.com/products/industrial-wet-scrubbers/scrubber-parts/) ![scrubber-replacement-parts-thumb](https://www.slyinc.com/wp-content/uploads/2025/01/scrubber-replacement-parts-thumb.jpg "scrubber-replacement-parts-thumb | Sly Air Pollution Control") When time is critical, Sly’s Afermarket Parts Team has you covered with replacement parts for both Impinjet and Venturi wet scrubbers. We’re here to ensure your team is protected from dust hazards, keeping your production running smoothly to minimize downtime. We have readily available high-quality, reliable parts like flow meters, baffle plates, mist eliminators, nozzles, fans, blowers, spray bars and more. [Learn More](https://www.slyinc.com/products/industrial-wet-scrubbers/scrubber-parts/) #### Request a Quote [Contact Us](https://www.slyinc.com/contact/request-a-quote/) ###### Featured Resources [![](https://www.slyinc.com/wp-content/uploads/2024/09/sly-wet-scrubber-thumbnail.png "sly-wet-scrubber-thumbnail | Sly Air Pollution Control")](https://info.slyinc.com/wet-scrubber-guide?_gl=1%2A22k8yl%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTY1MjUuMzEuMC40MTU4MDM1MTE.) #### Getting Started with Wet Scrubbers The first step to getting the best wet scrubbing system possible is knowing what your application needs. This resource details everything you need to know about wet scrubbers and how to make the right selection for your facility. [Read More](https://info.slyinc.com/wet-scrubber-guide?_gl=1%2A22k8yl%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTY1MjUuMzEuMC40MTU4MDM1MTE.) [![](https://www.slyinc.com/wp-content/uploads/2024/09/SLY_WetScrubberBuyersGuideCover.png "SLY_WetScrubberBuyersGuideCover | Sly Air Pollution Control")](https://info.slyinc.com/wet-scrubber-buyers-guide-1?_gl=1%2A22k8yl%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTY1MjUuMzEuMC40MTU4MDM1MTE.) #### Wet Scrubbers Buyer’s Guide Wet scrubbers can tackle tough air pollution control challenges that dry dust collectors can’t. Certain scenarios all but demand a wet scrubber. But how you do decide what wet scrubber is best for you and what supplier to use? [Read More](https://info.slyinc.com/wet-scrubber-buyers-guide-1?_gl=1%2A22k8yl%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTY1MjUuMzEuMC40MTU4MDM1MTE.) [![](https://www.slyinc.com/wp-content/uploads/2024/09/wetscrubberhandbook.png "wetscrubberhandbook | Sly Air Pollution Control")](https://info.slyinc.com/wet-scrubber-handbook-lp-1?_gl=1%2A22k8yl%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTY1MjUuMzEuMC40MTU4MDM1MTE.) #### Wet Scrubber Handbook Wet scrubbers are unique pieces of dust collection equipment, allowing businesses to improve their air quality through the impingement process. Using a scrubbing liquid to remove harmful pollutants from your air, wet scrubbers are perfect for applications with light dust loadings, wet or sticky particulates, vapor and gases, and combustible dust. To help you get the perfect wet scrubber for your facility’s needs, the experts at Sly created our new Wet Scrubber Handbook. This info-packed handbook contains helpful information regarding all of your wet scrubber needs. [Read More](https://info.slyinc.com/wet-scrubber-handbook-lp-1?_gl=1%2A22k8yl%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTY1MjUuMzEuMC40MTU4MDM1MTE.) ## **FAQs – **Industrial Wet Scrubbers**** ****What types of wet scrubber systems does Sly offer?**** Sly provides several types of wet scrubbers – including **Impinjet® plate/tray scrubbers, Venturi scrubbers, Eductor scrubbers, Packed Tower scrubbers**, and fully engineered assemblies. Each design targets specific needs such as particulate removal, gas absorption, cooling, and corrosive exhaust, and we help match the right type to your process conditions ******How do wet scrubbers remove contaminants from industrial exhaust?****** Wet scrubbers use a **liquid (often water or a chemical solution)** to capture airborne pollutants. Particulates and gases contact the liquid via mechanisms such as impingement plates, high-velocity Venturi mixing, suction induction, or packed beds. Pollutants are absorbed or entrained in the liquid, leaving cleaner air to be exhausted. ******What applications are best suited for wet scrubbers versus dry dust collectors?****** Wet scrubbers excel at controlling acid gases, vapors, sticky particulates, high humidity, and **corrosive exhaust streams**. Dry collectors like baghouses are ideal for dry, free-flowing dust. In many industrial processes, a **dry collector + wet scrubber combination** delivers complete particulate and gas control, and Sly can engineer integrated systems. ******Can wet scrubbers help meet environmental and regulatory requirements?****** Yes. Properly specified wet scrubbers are designed to help facilities meet **local, state, and federal emissions standards** for particulates and gas-phase pollutants. Sly engineers scrubbers with performance targets in mind and can support compliance and reporting documentation. ******What does maintenance look like for a wet scrubber system?****** Routine maintenance includes **inspecting nozzles and spray headers, checking packing media or trays, monitoring liquid levels, and ensuring pumps and controls are operating properly**. Sly provides aftermarket support, including parts, service, and performance troubleshooting, to help minimize downtime and protect system longevity. ********How do I know which wet scrubber configuration is right for my facility?******** Start by identifying your **gas stream chemistry, temperature, particulate load, and moisture content**. Sly’s engineers can evaluate your process and recommend a scrubber design and materials of construction (e.g., FRP, carbon steel, alloys) that optimize performance and corrosion resistance. Use the **“Request a Quote”** form or contact us for a custom evaluation. --- ### [Custom Sheet Metal Fabrication](https://www.slyinc.com/products/custom-sheet-metal-fabrication/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/09/custom-metal.jpg "custom-metal | Sly Air Pollution Control") # Custom Sheet Metal Fabrication **On-Site Custom Fabrication of Metal.** ![](https://www.slyinc.com/wp-content/uploads/2024/10/metal-fabrication-samples.jpg "metal-fabrication-samples | Sly Air Pollution Control") ## Fabrication & Assembly Shop Capabilities --- Sly operates a custom sheet metal, structural fabrication, and assembly shop in Mathiston, Mississippi (North Central Area). The plant has over 70,000 square feet, including over 25,000 square feet of high bay space equipped with 10-ton cranes allowing 18 feet below the hook. ## We Fabricate Our Metal In-House. Sly offers flexibility in its dust equipment that other manufacturers can’t match. That’s because we don’t outsource our manufacturing, including the fabrication of metal. Our agile approach to manufacturing in-house provides our customers the benefit of working with a single source supplier. Sly’s machine shop is equipped with a metal forming press brake, roller, turret lathes, milling machines, drills, grinders and more. Our product manufacturing and custom fabrication of metals occurs on site. The shop is capable of providing fabrication from 14 gauge to 3/8″ thick carbon steel, abrasion-resistant steel, stainless steel, and other high-alloy materials (e.g., Inconel, Hasteloy, AL6XN). **Shear Capacity:** *Up to 1/2″ thick x 10 ft.* **Brake Capacity:** *Up to 3/8″ thick x 10 ft.* **Rolling Capacity:** *Up to 3/8″ thick x 6 ft.* **CNC Plasma Cutting:** *6 ft. x 12 ft. Bed Size* **Structural Saw Capacity:** *16′ x 16″* **Structural Punch Capacity:** 1″ dia. x 1/2″ thick plate **Metal Preparation:** *Grit blasting up to SPCC-SP10* **Painting/Coatings:** *Conventional and airless* All Sly welders are certified AWS Structural Welding Code for D1.1 (structural steel), D1.3 (sheet metal), and D1.6 (stainless steel), and we have certified welding inspectors on staff. Our welding specifications are available upon request. [Contact](https://www.slyinc.com/contact/) #### Let Sly Quote Your Custom Sheet Metal Fabrication [Request a Quote](https://www.slyinc.com/contact/request-a-quote/) ## **FAQs – Sheet Metal Fabrication** ****What types of custom sheet metal fabrication services does Sly provide?**** Sly offers **full custom sheet metal fabrication** for industrial applications, including housings, ductwork, transition pieces, liners, and replacement parts. We work with carbon steel, stainless steel, aluminum, and specialty alloys to deliver solutions that meet your exact specifications and process requirements. ******How does custom fabrication support Sly’s dust collection and wet scrubber systems?****** Custom fabrication ensures that every component, from **collector housings to duct transitions, access doors, clean-outs, and supports**, fits precisely and performs reliably. This improves system efficiency, reduces leaks, and speeds installation compared to off-the-shelf components. ******Why choose Sly for custom industrial sheet metal fabrication instead of a general fabricator?****** Sly pairs metal fabrication expertise with **deep air pollution control engineering knowledge.** We don’t just cut and bend metal; we design parts to withstand **abrasion, corrosion, pressure, and thermal stress** specific to dust collectors and wet scrubber environments. ******Can Sly produce replacement or retrofit parts for existing systems?****** Yes. Sly fabricates **replacement parts, retrofit components, and upgrades** for both Sly and third-party systems. This includes hoppers, cones, liners, mounting flanges, doors, and other critical parts to extend equipment life and improve performance. ******What information do I need to provide for a custom fabrication quote?****** To generate a quote, we typically ask for: - **Drawings or sketches** - Material type and thickness - Dimensions and tolerances - Surface finish or coating requirements - Quantity needed  If needed, our team can help develop or refine specifications before providing a quote. ********How does custom fabrication impact installation timelines and system performance?******** Custom fabrication improves both. Parts built to specification reduce **field modifications and rework**, accelerate installation schedules, and ensure better sealing, alignment, and airflow performance, leading to **higher system efficiency and lower long-term costs**. --- ### [Dust Collectors](https://www.slyinc.com/products/dust-collectors/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/10/Industrial-Baghouse-Dust-Collection-Manufacturer.jpg "Industrial-Baghouse-Dust-Collection-Manufacturer | Sly Air Pollution Control") # Dust Collectors **Dust Collection: More Than Just Clean Air**. ## Industrial Dust Collector Products --- ### [TubeJet® Baghouse Dust Collectors](https://www.slyinc.com/products/dust-collectors/tubejet-baghouse-dust-collectors/) [![](https://www.slyinc.com/wp-content/uploads/2024/09/dust-col-tubejet.png "dust col- tubejet | Sly Air Pollution Control")](https://www.slyinc.com/products/dust-collectors/tubejet-baghouse-dust-collectors/) Sly TubeJet® dust collectors offer online cleaning with a steady pressure drop. Our no-tools required design makes bag changes exceptionally easy. We offer a full range of baghouse designs and media choices to solve the toughest pollution control problems involving high temperatures, pressures, and corrosives. Capacity to 200,000+ CFM. ### [Vertical Cartridge Filter Collectors](https://www.slyinc.com/products/dust-collectors/vertical-cartridge-filter-collectors/) [![](https://www.slyinc.com/wp-content/uploads/2024/10/RAF-colored-cropped.jpg "RAF-colored-cropped | Sly Air Pollution Control")](https://www.slyinc.com/products/dust-collectors/vertical-cartridge-filter-collectors/) Gravity works in your favor with the Vertical Cartridge Filters, allowing dust and debris to fall off the bags, rather than collect on the lower filter media. VCF’s are an ideal choice for many applications where the dust is dry and free flowing. ### [Reverse Air Collectors](https://www.slyinc.com/products/dust-collectors/reverse-air-collectors/) [![](https://www.slyinc.com/wp-content/uploads/2024/10/Sly-reverse-air-collector.jpg "Sly-reverse-air-collector | Sly Air Pollution Control")](https://www.slyinc.com/products/dust-collectors/reverse-air-collectors/) When energy savings are critical or the availability of quality compressed air is limited, the Sly RAC (reverse air collector) is an ideal option. ### [Cyclone Dust Collectors](https://www.slyinc.com/products/dust-collectors/cyclone-dust-collector/) [![Cyclone Dust System](https://www.slyinc.com/wp-content/uploads/2024/10/cyclone-dust-collector-sly.jpg "cyclone-dust-collector-sly | Sly Air Pollution Control")](https://www.slyinc.com/products/dust-collectors/cyclone-dust-collector/) Cyclones are different than other dust collectors, mainly because they do not use filters to collect the dust. use centrifugal force to pull pollutant filled air into the cyclone and separate the dust from clean air. Then pushed the dust particles to the base of the unit. #### More Options #### [Legacy Dust Collectors](https://www.slyinc.com/products/dust-collectors/legacy-dust-collectors/) Before 1990, all Sly dust collectors utilized an envelope-style filter bag. Many long-time Sly customers still operate our durable and reliable Dynaclones, Pactecons, and Shaker-cleaned dust collectors. Whether you need parts, service, general information or troubleshooting information, we stand ready to meet your needs. [Learn More](https://www.slyinc.com/products/dust-collectors/legacy-dust-collectors/) #### [Retrofits: Sly & Other Brands](/products/replacement-parts/retrofits/) Whether it’s old, inefficient or does not meet today’s ever-changing requirements, Sly’s team of dust collection experts will review and provide recommendations for updating your dust collector. We can re-engineer and modernize existing collectors (both Sly units and others) for top performance. [Learn More](/products/replacement-parts/retrofits/) #### [Explosion Protection Expertise](https://www.slyinc.com/products/dust-collectors/explosion-protection-expertise/) Combustible dusts may be a potential risk in your dust collectors, and Sly has the expertise to help you meet the NFPA standards that OSHA was authorized to enforce beginning in 2008. Sly’s dust collection professionals can assist you in all aspects of of explosion protection. [Learn More](https://www.slyinc.com/products/dust-collectors/explosion-protection-expertise/) #### [Aftermarket Parts Sales & Service](https://www.slyinc.com/products/dust-collectors/replacement-parts/) Sly understands that timely access to genuine spare parts is essential for maintaining the reliability and performance of your equipment. Our Aftermarket Sales Team is commited to providing prompt, reliable ordering to ensure minimal downtime to keep your operations optimized. [Learn More](https://www.slyinc.com/products/replacement-parts/) #### Request a Quote [Contact Us](https://www.slyinc.com/contact/request-a-quote/) Manufacturing For Clean Air \[In-House\] Any manufacturer of dust collectors and air pollution control equipment can give you clean air, but at SLY, that’s just the beginning. Sly offers flexibility in its dust equipment that other manufacturers can’t match. That’s because we don’t outsource our manufacturing – we fabricate major components in-house. We produce a wide-ranging line of reliable, durable baghouses, industrial dust collectors, industrial air cleaners, and more to keep your company running clean and efficient. Sly baghouse dust collectors have been used in many applications and industries for over 100 years, and Sly even holds the very first patent ever issued for cloth-type dust collectors. [![](https://www.slyinc.com/wp-content/uploads/2024/08/SLY_dust-flyer-223x300-1.png "SLY_dust-flyer-223x300-1 | Sly Air Pollution Control")](https://www.slyinc.com/wp-content/uploads/2026/02/Dry_Dust_Collectors_Web.pdf) ##### Dust Collector Brochure Dry dust collectors and baghouses are the go-to means of air quality control for many industrial applications. Here’s our quick fact sheet to help you determine whether a dry dust collector is right for you. [Download the PDF](https://www.slyinc.com/wp-content/uploads/2026/02/Dry_Dust_Collectors_Web.pdf) ##### Why We Customize Air Pollution Control Equipment Unlike many air pollution control equipment suppliers, we refuse to mass-produce products and then hope for a good fit. We have maintained flexibility in our engineering techniques, which permits us to manufacture all baghouses and dust collectors to fit the task at hand while maintaining a price comparable to mass-produced equipment. In many cases, getting the very best in dust collection equipment costs no more. Contact Sly and let us show you peace of mind. ##### Be Certain. Maximize Efficiency. ![](https://www.slyinc.com/wp-content/uploads/2024/07/Air-Pollution-Control-Gradient.png "Air-Pollution-Control-Gradient | Sly Air Pollution Control") ###### Featured Resources [![](https://www.slyinc.com/wp-content/uploads/2024/08/SLY_WetScrubberBuyersGuideCover.png "SLY_WetScrubberBuyersGuideCover | Sly Air Pollution Control")](https://info.slyinc.com/dry-dust-collection-handbook-1?_gl=1%2A1pyfjp1%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA0NDEzMi4xNC4xLjE3MzcwNDUzMDcuNDMuMC4xOTkxNTIzOTE5) #### Dry Dust Collection Handbook Preventing product contamination and ensuring worker safety are paramount to manufacturing or processing operations. Growing awareness of the impact of air pollution on health and the environment is driving demand for dust collection systems, so it’s critical for you to know how to navigate industry regulations and solve key challenges. [Read More](https://info.slyinc.com/dry-dust-collection-handbook-1?_gl=1%2A1pyfjp1%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA0NDEzMi4xNC4xLjE3MzcwNDUzMDcuNDMuMC4xOTkxNTIzOTE5) [![](https://www.slyinc.com/wp-content/uploads/2024/08/drybgcover.png "drybgcover | Sly Air Pollution Control")](https://info.slyinc.com/dust-collector-buyers-guide) #### Dry Dust Collector Buyer’s Guide Demand for dust collection systems is being fueled by growing consumer awareness of the impact of air pollution on health and the environment combined with rapid urbanization and industrialization. A variety of dry dust collection options are available on the market, some of which are optimized for specific industries or applications. [Read More](https://info.slyinc.com/dust-collector-buyers-guide) [![design a dust collection system](https://www.slyinc.com/wp-content/uploads/2024/08/dustcollectionguidecover.png "dustcollectionguidecover | Sly Air Pollution Control")](https://info.slyinc.com/dry-dust-collection-system-design-guide-1?_gl=1%2A1pyfjp1%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA0NDEzMi4xNC4xLjE3MzcwNDUzMDcuNDMuMC4xOTkxNTIzOTE5) #### How to Design a Dust Collection System Dust collection systems are essential for many industrial facilities to adhere to clean air standards set by the Federal Clean Air Act, OSHA, and MSHA. Companies also benefit, as clean air results in healthier employees, which increases productivity and employee morale. Designing a system requires a comprehensive look at all of the application’s specifics and environmental requirements. [Read More](https://info.slyinc.com/dry-dust-collection-system-design-guide-1?_gl=1%2A1pyfjp1%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA0NDEzMi4xNC4xLjE3MzcwNDUzMDcuNDMuMC4xOTkxNTIzOTE5) ## **FAQs – Industrial Dust Collectors** **What types of industrial dust collectors does Sly offer, and how do I choose the right one?** Sly supplies a range of dust collectors, including pulse-jet baghouses, cartridge collectors, reverse-air systems, and cyclones, each suited to different volumes, dust characteristics, temperatures, and application needs. Choosing the right system depends on your **dust type, airflow requirements, operating temperature, and space constraints**. Our engineers can help assess your specific process and recommend the most efficient solution. ****How does a baghouse dust collector differ from a cartridge dust collector?**** A **baghouse** uses long, sewn filter bags and is ideal for high dust loads and abrasive environments. A **cartridge collector** uses pleated filter media in a compact design and excels at capturing fine particulates in low-ceiling spaces. Baghouses generally handle larger volumes, while cartridges are easier to maintain in restricted spaces. Sly can help match the technology to your plant’s requirements. ****Can Sly’s dust collectors handle high-temperature or corrosive applications?**** Yes. We offer **high-temperature designs**, corrosion-resistant construction, and custom materials to meet the demands of challenging conditions. For corrosive environments, we can specify appropriate media and coated or alloy components. During the design phase, we evaluate your temperature profile and chemical exposure to ensure durability and compliance. ****How can a dust collector improve safety and compliance at my facility?**** A properly selected and installed dust collector reduces **airborne particulate exposure**, helping protect worker health and meet regulatory limits. By controlling dust at the source, systems also reduce fire and explosion risks, support OSHA and EPA standards, and prevent equipment wear; all of which increase uptime and reduce compliance risk. ****What maintenance is required for industrial dust collectors, and does Sly provide aftermarket support?**** Maintenance includes **scheduled filter changes, inspections of seals and gaskets, checks of the compressor and valves, and monitoring of pressure drop** across the system. Sly provides aftermarket services, including media replacement, upgrades, retrofits, and troubleshooting support, to help you extend equipment life and maintain performance with minimal downtime. --- ### [Fly Ash](https://www.slyinc.com/industries/fly-ash/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![fly ash processing dust control](https://www.slyinc.com/wp-content/uploads/2024/09/fly-ash-processing-dust-control.jpg "fly-ash-processing-dust-control | Sly Air Pollution Control") # Fly Ash **Sly Offers Decades of Designing and Building Dust Collection Systems to Collect Fly Ash for Industrial Purposes.** ## What is Fly Ash? --- Fly ash is a fine, glass-like powder recovered from coal-fired electric power generation. U.S. power plants produce millions of tons of fly ash annually, often disposed of in landfills or ponds. Companies are compelled by Environmental Protection Agency (EPA) regulations to clean or empty these ponds and reduce fly ash waste. Commercial uses can make fly ash recovery a profitable venture. For example, fly ash is used as a direct substitute for Portland cement in concrete production or can replace mined gypsum in wallboard. The site of its first documented use in cement production was in the 1940s when fly ash concrete was used for a tunnel spillway at the Hoover Dam. When applied in controlled and measured amounts, fly ash also shows excellent potential as a soil amendment to help modify soil health and improve crop performance. ![](https://www.slyinc.com/wp-content/uploads/2024/06/coal-fly-ash-air-control.png "coal-fly-ash-air-control | Sly Air Pollution Control") Taking the Guesswork Out of Purchasing a Dust Collector [Download White Paper](https://info.slyinc.com/dust-collector-buyers-guide) ### Recommended Equipment for Fly Ash Processing ![](https://www.slyinc.com/wp-content/uploads/2025/01/CTR-60-collector.jpg) CTR Dry Dust Collectors ![](https://www.slyinc.com/wp-content/uploads/2025/01/fly-ash-wet-scrubber.jpg) Venturi Wet Scrubbers ![](https://www.slyinc.com/wp-content/uploads/2025/01/Dried-Product-Loading-Spouts.jpg) Industrial Loading Spouts ![](https://www.slyinc.com/wp-content/uploads/2024/07/Air-Pollution-Control-Gradient.png "Air-Pollution-Control-Gradient | Sly Air Pollution Control") --- Due to its commercial value, fly ash represents a process of dust recovery rather than a nuisance of dust removal. This aspect and its unique characteristics influence the type of dust collection equipment and system design to realize optimal performance and recovery. [Contact Sly](/contact) ### Considerations for Designing a Fly Ash Dust Collection System Fly ash removed from waste ponds requires drying to remove its moisture content and make it suitable for industrial use. Common equipment for this purpose often includes a [rotary calciner](https://www.hpprocess.com/equipment/calciners/) or [flash dryer](https://www.carriervibrating.com/equipment/dryers/flash/). Calcination subjects the fly ash to elevated temperatures, typically between 700° to 1000°C (up to 2000°F) to dry and stabilize the material. Fly ash is often collected directly from the calciner or dryer. In fact, 90-95% of the product being processed in the calciner enters the dust collector for a heavy dust load. This type of dust contains high levels of silicon dioxide and aluminum oxide or the main material compounds found in coal-bearing rock, which makes it very abrasive. In addition, fly ash is extremely fine and tends to fluidize when transferring, which can be a material handling challenge and must be considered during system design. **Key considerations when designing a dust collection system for fly ash include:** - Volume or dust load - Dust characteristics - Airflow - Temperature - Abrasiveness ![](https://www.slyinc.com/wp-content/uploads/2024/09/Ash-Pond-Retouch-1.jpg "Ash-Pond-Retouch | Sly Air Pollution Control") ![fly ash cement](https://www.slyinc.com/wp-content/uploads/2024/12/sly-flyash-blog-image-2.jpg "sly-flyash-blog-image-2 | Sly Air Pollution Control") The calciner processes thousands of pounds of material, resulting in a high dust loading, with several hundred grains per cubic foot of material being conveyed in every cubic foot of air. The dust loading, in addition to its flow characteristics, impacts the collection process. In addition, design considerations must counter the higher temperatures used in the calciner to reduce the air temperature before it enters the baghouse, dropping it to a minimum of 350°F. This temperature drop helps engineers design a more cost-effective system, impacting components such as material selection for baghouse filters. Due to the abrasive nature of the dust, all the contact points, such as the hopper, inlet, or airlocks, must be constructed of abrasive-resistant materials such as high-carbon alloy steel. Also, a cyclone might be installed as a prefilter to extract most of the material to help extend the lifespan of the baghouse. Sly offers customers decades of designing and building dust collection systems to collect fly ash for industrial purposes. Dust collection systems are fabricated for robust durability and to optimize fly ash recovery. Each system for fly ash collection is custom-designed and manufactured, from the placement of the inlets to sizing the system for air volume and the air-to-cloth ratio. Customers appreciate the depth of knowledge that an industry expert can supply to develop reliable product recovery. We provide a[ complete line of dust collection equipment](https://www.slyinc.com/products/), including cyclones, bag houses and filters (in a wide range of media), wet scrubbers, and loading spouts. During our 150-year history, our expert engineers have worked with companies of all types to supply equipment for solutions to their unique applications. Maintain worker safety, meet emissions standards, and enjoy near complete fly ash recovery with a dust collection system from Sly. [**Request a quote**](https://www.slyinc.com/contact/request-a-quote/) for your fly ash recovery project today. ### Case Studies & White Papers ##### Custom Dust Collector Replaces Worn, Non-Compliant Unit A resin producer purchases a new dust collector to keep up with safety regulations and reduce filter wear. [Download Case Study](https://www.slyinc.com/resources/case-studies/custom-dust-collector-replaces-worn-non-compliant-unit/) ###### Featured Resources [![](https://www.slyinc.com/wp-content/uploads/2024/08/drybgcover.png "drybgcover | Sly Air Pollution Control")](https://info.slyinc.com/dust-collector-buyers-guide) #### Taking the Guesswork Out of Purchasing a Dust Collector Our new Dry Dust Collector Buyer’s Guide can help you navigate the complex specifying and purchasing process once you decide a dust collector or baghouse is the right solution for your air pollution needs. [Read More](https://info.slyinc.com/dust-collector-buyers-guide) --- ### [White Papers](https://www.slyinc.com/resources/white-papers/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/11/white-paper2.jpg "white-paper2 | Sly Air Pollution Control") # White Papers **More Information Available in our White Papers.** [![](https://www.slyinc.com/wp-content/uploads/2025/01/Fly-Ash-Shadow.jpg "Fly-Ash-Shadow")](https://info.slyinc.com/dust-collection-key-to-fly-ash-reclamation) ## [Dust Collection: The Key to Fly Ash Reclamation](https://info.slyinc.com/dust-collection-key-to-fly-ash-reclamation) This essential guide covers the current landscape of environmental regulations related to fly ash and dives deep into the mechanics of dust collection. It illustrates how effective reclamation is possible, to streamline its management and keep your facility in compliance with the EPA while boosting the bottom line. **[Read More](https://info.slyinc.com/dust-collection-key-to-fly-ash-reclamation)** [![](https://www.slyinc.com/wp-content/uploads/2025/01/frp-shadow.jpg "frp-shadow")](https://info.slyinc.com/wetscrubberfrpguide?_gl=1%2A119r96u%2A_gcl_au%2AMTU4MDczMzg1Ni4xNzMyNjM4MTY4%2A_ga%2ANTE0MzY1MTc0LjE3MzI2MzgxNjg.%2A_ga_0G2M9CMRL1%2AMTczNjUyNTE0Ni42LjEuMTczNjUyNTQ3MC42MC4wLjE0Njg1NjIwNjU.) ## [Pollution Protection Powerhouse: Fiberglass-Reinforced Plastic Wet Scrubbers Optimize Performance](https://info.slyinc.com/wetscrubberfrpguide?_gl=1%2A119r96u%2A_gcl_au%2AMTU4MDczMzg1Ni4xNzMyNjM4MTY4%2A_ga%2ANTE0MzY1MTc0LjE3MzI2MzgxNjg.%2A_ga_0G2M9CMRL1%2AMTczNjUyNTE0Ni42LjEuMTczNjUyNTQ3MC42MC4wLjE0Njg1NjIwNjU.) Companies that fail to comply with air quality regulations can face severe consequences including fines, legal action and reputational damage. Wet scrubbers, particularly those fabricated of fiberglass-reinforced plastic (FRP), offer an efficient and cost-effective solution for controlling industrial emissions. **[Read More](https://info.slyinc.com/wetscrubberfrpguide)** [![](https://www.slyinc.com/wp-content/uploads/2025/01/lithiumprocessing-wp-1.webp "lithiumprocessing-wp-1")](https://info.slyinc.com/lithium-wp) ## [A Matter of Microns Lithium Dust System Selection: When Every Mote Counts](https://info.slyinc.com/lithium-wp) Within the lithium processing industry, every speck has value. Proper recovery of this precious resource is vital to the profitability and performance of grinding and milling operations, supplying an essential component for batteries and other products. Yet in the highly competitive lithium market, each facility carefully guards its proprietary processes. **[Read More](https://info.slyinc.com/lithium-wp)** [![](https://www.slyinc.com/wp-content/uploads/2025/01/CPEG-pet-food-shadow-1.jpg "CPEG-pet-food-shadow")](https://info.slyinc.com/providing-healthy-pet-food-through-sanitary-processing-equipment) ## [Providing Healthy Pet Food Through Sanitary Processing Equipment](https://info.slyinc.com/providing-healthy-pet-food-through-sanitary-processing-equipment "Providing Healthy Pet Food Through Sanitary Processing Equipment") Discover how pet food processors can benefit from tightening up process lines with sanitary and reliable process equipment. In this White Paper from CPEG, a full processing equipment provider, we go into detail on the pet food industry, minimizing recalls and how pet food operators should look at their equipment to provide for the modern and sanitary product needs in this industry. **[Read More](https://info.slyinc.com/providing-healthy-pet-food-through-sanitary-processing-equipment)** [![](https://www.slyinc.com/wp-content/uploads/2025/01/CPEG-lab-shadow.jpg "CPEG-key-considerations-shadow")](https://info.slyinc.com/considerations-for-averting-powder-bulk-solids-processing-and-handling-issues) ## [Key Considerations for Averting Powder & Bulk Solids Processing and Handling Issues](https://info.slyinc.com/considerations-for-averting-powder-bulk-solids-processing-and-handling-issues "Key Considerations for Averting Powder & Bulk Solids Processing and Handling Issues") Powder and bulk solids processing and handling are essential components of almost every industry worldwide. Processing bulk solids plays such an essential role in getting many products to market, making it crucial for process engineers to look for ways to maximize operational efficiency. **[Read More](https://info.slyinc.com/considerations-for-averting-powder-bulk-solids-processing-and-handling-issues)** [![](https://www.slyinc.com/wp-content/uploads/2024/08/biomass-wp.jpg "biomass-wp")](https://info.slyinc.com/biomass-wp) ## [Discover How Dust Collection for Biomass Processing Can Reduce Hazards and Clear the Air in our White Paper](https://info.slyinc.com/biomass-wp) Biomass operations that convert organic waste into clean energy or usable products often generate dust during waste stream transport, drying and processing stages. Whether nuisance or process dust, either type requires effective dust collection and capture, to either improve air quality and safety or recapture a valuable commodity. **[Read More](https://info.slyinc.com/biomass-wp)** [![](https://www.slyinc.com/wp-content/uploads/2025/01/overcoming-dust-wp.webp "overcoming-dust-wp")](https://info.slyinc.com/dust-containment-wp) ## [Emerging from the Haze: Overcoming the Most Challenging Industrial Dust Environments](https://info.slyinc.com/dust-containment-wp) Dust is one of the many hazards that require sanitation efforts in a manufacturing environment. The first step in assisting with the cleanup of dust is identifying the type and the conditions where the dust is present. In this white paper, Emerging from the Haze, we will explain compliance, dust hazard analysis, combustibility and worker safety. **[Read More](https://info.slyinc.com/dust-containment-wp)** [![](https://www.slyinc.com/wp-content/uploads/2024/09/sly-wet-scrubber-thumbnail.png "sly-wet-scrubber-thumbnail")](https://info.slyinc.com/wet-scrubber-guide) ## [The Complete Guide to Getting Started with Wet Scrubbers](https://info.slyinc.com/wet-scrubber-guide?_gl=1%2Au8tntv%2A_gcl_au%2AMTU4MDczMzg1Ni4xNzMyNjM4MTY4%2A_ga%2ANTE0MzY1MTc0LjE3MzI2MzgxNjg.%2A_ga_0G2M9CMRL1%2AMTczNjUzMTY5OC43LjEuMTczNjUzMTg4MC42MC4wLjIwNzkwMzIxMTU.) Want to know all of the ins and outs of wet scrubbers and how to use them? Get Sly’s newest industry resource, The Complete Guide to Getting Started with Wet Scrubbers, for everything you need to know about selecting the right wet scrubber for your application. Download the guide today! **[Read More](https://info.slyinc.com/wet-scrubber-guide)** [![](https://www.slyinc.com/wp-content/uploads/2024/08/wetscrubberhandbook.webp "wetscrubberhandbook")](https://info.slyinc.com/wet-scrubber-handbook-lp-1) ## [Wet Handbook](https://info.slyinc.com/wet-scrubber-handbook-lp-1) Wet scrubbers operate differently than baghouses, using scrubbing liquid instead of the typical filter media to rid your plant of harmful pollutants. This makes wet scrubbers perfect for applications with light dust loadings, wet or sticky particulate, vapor and gases, and combustible dust. Our new handbook details everything that you need to know to pick the perfect scrubber for your unique application. **[Read More](https://info.slyinc.com/wet-scrubber-handbook-lp-1)** [![](https://www.slyinc.com/wp-content/uploads/2025/01/SLY_PARTS-DOWN-SHADOW-1.jpg "parts-maintenance-guide")](https://info.slyinc.com/parts-and-maintenance-guide-1) ## [Parts Guide](https://info.slyinc.com/parts-and-maintenance-guide-1?_gl=1%2Axdjibp%2A_gcl_au%2AMTU4MDczMzg1Ni4xNzMyNjM4MTY4%2A_ga%2ANTE0MzY1MTc0LjE3MzI2MzgxNjg.%2A_ga_0G2M9CMRL1%2Ahttps://info.slyinc.com/parts-and-maintenance-guide-1.) To keep your dust collector running properly, you must perform regular maintenance on your equipment, including replacing filters, valves and other critical parts. Even normal wear and tear can affect the efficiency of your system, which is why Sly recommends a proactive approach to maintenance and parts replacement. **[Read More](https://info.slyinc.com/parts-and-maintenance-guide-1)** [![](https://www.slyinc.com/wp-content/uploads/2024/08/dry-dust-collection-hb.jpg "dry-dust-collection-hb")](https://info.slyinc.com/dry-dust-collection-handbook-1) ## [Dry Dust Collection Handbook](https://info.slyinc.com/dry-dust-collection-handbook-1) Nearly every manufacturing plant or processing facility pollutes the air in some fashion. This handbook helps you to understand and navigate the regulations, key challenges, and types of dry dust collection systems available today. **[Read More](https://info.slyinc.com/dry-dust-collection-handbook-1)** [![](https://www.slyinc.com/wp-content/uploads/2024/09/SLY_WetScrubberBuyersGuideCover.png "SLY_WetScrubberBuyersGuideCover")](https://info.slyinc.com/wet-scrubber-buyers-guide-1) ## [Wet Scrubber Buyer’s Guide](https://info.slyinc.com/wet-scrubber-buyers-guide-1?_gl=1%2A8ui9ps%2A_gcl_au%2AMTU4MDczMzg1Ni4xNzMyNjM4MTY4%2A_ga%2ANTE0MzY1MTc0LjE3MzI2MzgxNjg.%2A_ga_0G2M9CMRL1%2AMTczNjUzNjE0My44LjEuMTczNjUzNjIyMy42MC4wLjE5MzYxMzYwNDE.) How you do decide which wet scrubber is best for you and what supplier to use? Our new Wet Scrubbers Buyer’s Guide can help you navigate the complex specifying and purchasing process once you decide a wet scrubber is the right solution for your air pollution needs. **[Read More](https://info.slyinc.com/wet-scrubber-buyers-guide-1)** [![](https://www.slyinc.com/wp-content/uploads/2025/01/drybgcover.png "drybgcover")](https://info.slyinc.com/dust-collector-buyers-guide) ## [Dust Collector Buyer’s Guide](https://info.slyinc.com/dust-collector-buyers-guide) Description: A variety of dry dust collection options are available on the market, some of which are optimized for specific industries or applications. Our new Dry Dust Collector Buyer’s Guide can help you navigate the complex specifying and purchasing process once you decide a dust collector is the right solution for your air pollution needs. **[Read More](https://info.slyinc.com/dust-collector-buyers-guide)** [![](https://www.slyinc.com/wp-content/uploads/2025/01/maint-checklist-shadow.jpg "SLY_PARTS DOWN SHADOW")](https://info.slyinc.com/maintenance-checklist-for-a-better-baghouse-download-1) ## [Maintenance Checklist for a Better Baghouse](https://info.slyinc.com/maintenance-checklist-for-a-better-baghouse-download-1) For improved performance and reliability of your dust collection equipment, Sly recommends a schedule of routine inspections and the timely repair of damaged or malfunctioning equipment. That’s why creating your own baghouse maintenance program will keep your system performance high and your health risks low. **[Read More](https://info.slyinc.com/maintenance-checklist-for-a-better-baghouse-download-1)** [![](https://www.slyinc.com/wp-content/uploads/2024/08/SLY_WetScrubberGuideCover.png "SLY_WetScrubberGuideCover")](https://info.slyinc.com/guide-using-wet-scrubbers-for-combustible-dust-control-1) ## [Using Wet Scrubbers for Combustible Dust Control](https://info.slyinc.com/guide-using-wet-scrubbers-for-combustible-dust-control-1) Did you know that a wet scrubber system can help lower the risk of a dust explosion? Our new guide, Using Wet Scrubbers for Combustible Dust Control, can help you decide if a wet scrubber is the right solution. **[Read More](https://info.slyinc.com/guide-using-wet-scrubbers-for-combustible-dust-control-1)** [![](https://www.slyinc.com/wp-content/uploads/2024/08/dustcollectionguidecover.png "dustcollectionguidecover")](https://info.slyinc.com/dry-dust-collection-system-design-guide-1) ## [How to Design a Dust Collection System](https://info.slyinc.com/dry-dust-collection-system-design-guide-1) The process of designing a system requires a comprehensive look at all of the specifics of the application and environmental requirements. Our guide, How to Design a Dust Collection System, provides a summary of the factors you need to consider. **[Read More](https://info.slyinc.com/dry-dust-collection-system-design-guide-1)** --- ### [Dust Collector Cages](https://www.slyinc.com/products/dust-collectors/replacement-parts/dust-collector-cages/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/11/parts-caged-min.jpg "parts-caged-min | Sly Air Pollution Control") # Dust Collector Cages **A Complete Range of Cages**. ## Order Dust Collector Cages: Direct From the Manufacturer --- A complete range of cages to fit nearly any manufacturer’s dust collector is available. Most are constructed of 11-gauge galvanized wire using a 12 vertical wire design, which extends dust collector bag life by providing extra support. Also available are special venturi/cage assemblies as well as 304 and 316 stainless steel and epoxy coated cages designed to meet the most demanding applications. ![](https://www.slyinc.com/wp-content/uploads/2025/01/install-replace-dust-collector-cages.jpg "install-replace-dust-collector-cages | Sly Air Pollution Control")![delivery-dust-collector-cages-onsite](https://www.slyinc.com/wp-content/uploads/2025/01/delivery-dust-collector-cages-onsite.jpg "delivery-dust-collector-cages-onsite | Sly Air Pollution Control") #### Parts Department [Contact Us](https://www.slyinc.com/contact/request-a-quote/) ###### Featured Resources [![](https://www.slyinc.com/wp-content/uploads/2024/08/SLY_WetScrubberBuyersGuideCover.png "SLY_WetScrubberBuyersGuideCover | Sly Air Pollution Control")](https://info.slyinc.com/dry-dust-collection-handbook-1?_gl=1%2Ait2bn9%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTU3ODEuNDMuMC40MTU4MDM1MTE.) #### Your Comprehensive Guide to Dust Collector Maintenance Now that you have the right dust collection system designed and installed, you want to make sure that it’s running at its optimal efficiency. For improved performance and reliability of your dust collection equipment, Sly recommends a schedule of routine inspections and the timely repair of damaged or malfunctioning equipment. [Read More](https://info.slyinc.com/dry-dust-collection-handbook-1?_gl=1%2Ait2bn9%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTU3ODEuNDMuMC40MTU4MDM1MTE.) [![](https://www.slyinc.com/wp-content/uploads/2024/09/sly-resource-thumb-maintenance-checklist-for-a-better-baghouse-parts-down-campaign.webp "sly-resource-thumb-maintenance-checklist-for-a-better-baghouse-parts-down-campaign | Sly Air Pollution Control")](https://info.slyinc.com/maintenance-checklist-for-a-better-baghouse-download-1?_gl=1%2Ait2bn9%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTU3ODEuNDMuMC40MTU4MDM1MTE.) #### Maintenance Checklist for a Better Baghouse Now that you have the right dust collection system designed and installed, you want to make sure that it’s running at its optimal efficiency. For improved performance and reliability of your dust collection equipment, Sly recommends a schedule of routine inspections and the timely repair of damaged or malfunctioning equipment. [Read More](https://info.slyinc.com/maintenance-checklist-for-a-better-baghouse-download-1?_gl=1%2Ait2bn9%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTU3ODEuNDMuMC40MTU4MDM1MTE.) [![](https://www.slyinc.com/wp-content/uploads/2024/09/overcoming-dust-wp.webp "overcoming-dust-wp | Sly Air Pollution Control")](https://info.slyinc.com/dust-containment-wp?_gl=1%2Acr1uth%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTU3ODEuNDMuMC40MTU4MDM1MTE.) #### Overcoming the Most Challenging Industrial Dust Environments Do you know all you can about the challenging industrial dust environment? In this white paper, you’ll learn why being flexible is the excellent solution for dust collection: The Importance of Dust Control, The Confluence of Kst and Pmax for Combustibility, Conducting a Dust Hazard Analysis, Case Study on a Customized Solution [Read More](https://info.slyinc.com/dust-containment-wp?_gl=1%2Acr1uth%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTU3ODEuNDMuMC40MTU4MDM1MTE.) ##### Downloads --- - [Download the Replacement Parts Catalog](https://www.slyinc.com/wp-content/uploads/2025/01/SLY-Aftermarket-Web.pdf) - [Download the Dust Collection Maintenance Handbook](https://www.slyinc.com/pdfs/DustCollectionMaintenance.pdf) --- ### [Pleated Bags](https://www.slyinc.com/products/dust-collectors/replacement-parts/pleated-bags/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/11/parts-pleated-bag-hero-min.jpg "parts-pleated-bag-hero-min | Sly Air Pollution Control") # Pleated Bags **An Alternative to Optimizing Collector Efficiency.** ## Benefits of Pleated Dust Collector Filter Bags --- Pleated dust collector filter bags offer an alternative to optimize collector efficiency without requiring a larger collector case. Each pleated bag contains 300% to 500% as much media as a conventional dust collector bag. Additionally, pleated bags are easier to clean than conventional felts because they are surface loaded, meaning the dust doesn’t penetrate the media’s surface. This feature also produces a lower pressure drop, making them economical to operate. Sly’s Top loaded dust collector pleated bags are exceptionally easy to replace. They have a snap band collar which is compression-fit by hand to the collector’s tube sheet. Unlike other similar dust collector bags, some styles do not require a tool to pry out when being replaced. Pleated bags are also available for bottom access designs. ![](https://www.slyinc.com/wp-content/uploads/2024/09/img-pleated.png "img-pleated | Sly Air Pollution Control") #### Parts Department [Contact Us](https://www.slyinc.com/contact/request-a-quote/) ###### Featured Resources [![](https://www.slyinc.com/wp-content/uploads/2024/08/SLY_WetScrubberBuyersGuideCover.png "SLY_WetScrubberBuyersGuideCover | Sly Air Pollution Control")](https://info.slyinc.com/dry-dust-collection-handbook-1?_gl=1%2Ayhw6ti%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTUzMjYuNTguMC40MTU4MDM1MTE.) #### Your Comprehensive Guide to Dust Collector Maintenance Now that you have the right dust collection system designed and installed, you want to make sure that it’s running at its optimal efficiency. For improved performance and reliability of your dust collection equipment, Sly recommends a schedule of routine inspections and the timely repair of damaged or malfunctioning equipment. [Read More](https://info.slyinc.com/dry-dust-collection-handbook-1?_gl=1%2Ayhw6ti%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTUzMjYuNTguMC40MTU4MDM1MTE.) [![](https://www.slyinc.com/wp-content/uploads/2024/09/sly-resource-thumb-maintenance-checklist-for-a-better-baghouse-parts-down-campaign.webp "sly-resource-thumb-maintenance-checklist-for-a-better-baghouse-parts-down-campaign | Sly Air Pollution Control")](https://info.slyinc.com/maintenance-checklist-for-a-better-baghouse-download-1?_gl=1%2A53w3w6%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTUzMjYuNTguMC40MTU4MDM1MTE.) #### Maintenance Checklist for a Better Baghouse Now that you have the right dust collection system designed and installed, you want to make sure that it’s running at its optimal efficiency. For improved performance and reliability of your dust collection equipment, Sly recommends a schedule of routine inspections and the timely repair of damaged or malfunctioning equipment. [Read More](https://info.slyinc.com/maintenance-checklist-for-a-better-baghouse-download-1?_gl=1%2A53w3w6%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTUzMjYuNTguMC40MTU4MDM1MTE.) [![](https://www.slyinc.com/wp-content/uploads/2024/09/overcoming-dust-wp.webp "overcoming-dust-wp | Sly Air Pollution Control")](https://info.slyinc.com/dust-containment-wp?_gl=1%2A1ial947%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTUzMjYuNTguMC40MTU4MDM1MTE.) #### Overcoming the Most Challenging Industrial Dust Environments Do you know all you can about the challenging industrial dust environment? In this white paper, you’ll learn why being flexible is the excellent solution for dust collection: The Importance of Dust Control, The Confluence of Kst and Pmax for Combustibility, Conducting a Dust Hazard Analysis, Case Study on a Customized Solution [Read More](https://info.slyinc.com/dust-containment-wp?_gl=1%2A1ial947%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTUzMjYuNTguMC40MTU4MDM1MTE.) ##### Downloads --- - [Download the Replacement Parts Catalog](https://www.slyinc.com/wp-content/uploads/2025/01/SLY-Aftermarket-Web.pdf) - [Download the Dust Collection Maintenance Handbook](https://www.slyinc.com/pdfs/DustCollectionMaintenance.pdf) --- ### [Dry Filters](https://www.slyinc.com/products/dust-collectors/replacement-parts/dry-filters/) **Published:** August 5, 2024 **Author:** Mike Eaton **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/11/parts-BLUE-dry-filters.jpg "parts-BLUE-dry-filters | Sly Air Pollution Control") # Dry Filters **Ensure High Performance with Sly Replacement Dust Collector Bags.** ## Dust Collector Bag Offerings --- Sly, LLC. now offers virtually all types of replacement dust collector bags, including any size or style. This newly-enlarged line encompasses all major fabrics, such as Nomex®, polyester, polypropylene, Ryton®, P-84, cotton, PTFE, membrane and Teflon®. The replacement bags are for both Sly-brand equipment and nearly any other dust collector manufacturer. Most common bags are shipped within one to two weeks of ordering. ### Fabric Filter Media Choices See Available [Media and Media Finishes](https://www.slyinc.com/products/dry-dust-collector-filter-bags/). ![filter bag options](https://www.slyinc.com/wp-content/uploads/2024/10/filter-bags-Sly-Dust-Collector.jpg "filter-bags-Sly-Dust-Collector | Sly Air Pollution Control") #### Parts Department [Contact Us](https://www.slyinc.com/contact/request-a-quote/) ###### Featured Resources [![](https://www.slyinc.com/wp-content/uploads/2024/08/SLY_WetScrubberBuyersGuideCover.png "SLY_WetScrubberBuyersGuideCover | Sly Air Pollution Control")](https://info.slyinc.com/dry-dust-collection-handbook-1?_gl=1%2An4n5b0%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTQ4NTYuMjIuMC40MTU4MDM1MTE.) #### Your Comprehensive Guide to Dust Collector Maintenance Now that you have the right dust collection system designed and installed, you want to make sure that it’s running at its optimal efficiency. For improved performance and reliability of your dust collection equipment, Sly recommends a schedule of routine inspections and the timely repair of damaged or malfunctioning equipment. [Read More](https://info.slyinc.com/dry-dust-collection-handbook-1?_gl=1%2An4n5b0%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTQ4NTYuMjIuMC40MTU4MDM1MTE.) [![](https://www.slyinc.com/wp-content/uploads/2024/09/sly-resource-thumb-maintenance-checklist-for-a-better-baghouse-parts-down-campaign.webp "sly-resource-thumb-maintenance-checklist-for-a-better-baghouse-parts-down-campaign | Sly Air Pollution Control")](https://info.slyinc.com/maintenance-checklist-for-a-better-baghouse-download-1?_gl=1%2Ah1c5gs%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTQ4NTYuMjIuMC40MTU4MDM1MTE.) #### Maintenance Checklist for a Better Baghouse Now that you have the right dust collection system designed and installed, you want to make sure that it’s running at its optimal efficiency. For improved performance and reliability of your dust collection equipment, Sly recommends a schedule of routine inspections and the timely repair of damaged or malfunctioning equipment. [Read More](https://info.slyinc.com/maintenance-checklist-for-a-better-baghouse-download-1?_gl=1%2Ah1c5gs%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTQ4NTYuMjIuMC40MTU4MDM1MTE.) [![](https://www.slyinc.com/wp-content/uploads/2024/09/overcoming-dust-wp.webp "overcoming-dust-wp | Sly Air Pollution Control")](https://info.slyinc.com/dust-containment-wp?_gl=1%2Ah1c5gs%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTQ4NTYuMjIuMC40MTU4MDM1MTE.) #### Overcoming the Most Challenging Industrial Dust Environments Do you know all you can about the challenging industrial dust environment? In this white paper, you’ll learn why being flexible is the excellent solution for dust collection: The Importance of Dust Control, The Confluence of Kst and Pmax for Combustibility, Conducting a Dust Hazard Analysis, Case Study on a Customized Solution [Read More](https://info.slyinc.com/dust-containment-wp?_gl=1%2Ah1c5gs%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTQ4NTYuMjIuMC40MTU4MDM1MTE.) ##### Downloads --- - [Download the Replacement Parts Catalog](https://www.slyinc.com/wp-content/uploads/2025/01/SLY-Aftermarket-Web.pdf) - [Download the Dust Collection Maintenance Handbook](https://www.slyinc.com/pdfs/DustCollectionMaintenance.pdf) - [Fiber Filter Properties](https://www.slyinc.com/pdfs/Fiber_Characteristics.pdf) - [Fabric Filter Chemical Compatibility Chart](https://www.slyinc.com/pdfs/Chemical_Compatibility.pdf) --- ### [Dust Collector Timer Boards](https://www.slyinc.com/products/dust-collectors/replacement-parts/dust-collector-timer-boards/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![Sly-timer-boards-dust-collectors](https://www.slyinc.com/wp-content/uploads/2024/11/Sly-timer-boards-dust-collectors.jpg "Sly-timer-boards-dust-collectors | Sly Air Pollution Control") # Dust Collector Timer Boards **Timer Boards for All Pulse Jet Dust Collectors.** We provide replacement timer boards for our dust collection equipment. Sly timer boards monitor and control the cleaning cycle of dust collectors. There are several factors that should be considered when selecting the appropriate timer board for your plant’s air pollution control equipment. Sly technical experts will recommend the best timer board for your dust application. Contact us to learn more. ![sly--timer-board-interior](https://www.slyinc.com/wp-content/uploads/2024/11/sly-timer-board-interior.jpg "sly--timer-board-interior | Sly Air Pollution Control") #### Parts Department [Contact Us](https://www.slyinc.com/contact/request-a-quote/) ###### Featured Resources [![](https://www.slyinc.com/wp-content/uploads/2024/08/SLY_WetScrubberBuyersGuideCover.png "SLY_WetScrubberBuyersGuideCover | Sly Air Pollution Control")](https://info.slyinc.com/dry-dust-collection-handbook-1?_gl=1%2Ait2bn9%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTU3ODEuNDMuMC40MTU4MDM1MTE.) #### Your Comprehensive Guide to Dust Collector Maintenance Now that you have the right dust collection system designed and installed, you want to make sure that it’s running at its optimal efficiency. For improved performance and reliability of your dust collection equipment, Sly recommends a schedule of routine inspections and the timely repair of damaged or malfunctioning equipment. [Read More](https://info.slyinc.com/dry-dust-collection-handbook-1?_gl=1%2Ait2bn9%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTU3ODEuNDMuMC40MTU4MDM1MTE.) [![](https://www.slyinc.com/wp-content/uploads/2024/09/sly-resource-thumb-maintenance-checklist-for-a-better-baghouse-parts-down-campaign.webp "sly-resource-thumb-maintenance-checklist-for-a-better-baghouse-parts-down-campaign | Sly Air Pollution Control")](https://info.slyinc.com/maintenance-checklist-for-a-better-baghouse-download-1?_gl=1%2Ait2bn9%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTU3ODEuNDMuMC40MTU4MDM1MTE.) #### Maintenance Checklist for a Better Baghouse Now that you have the right dust collection system designed and installed, you want to make sure that it’s running at its optimal efficiency. For improved performance and reliability of your dust collection equipment, Sly recommends a schedule of routine inspections and the timely repair of damaged or malfunctioning equipment. [Read More](https://info.slyinc.com/maintenance-checklist-for-a-better-baghouse-download-1?_gl=1%2Ait2bn9%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTU3ODEuNDMuMC40MTU4MDM1MTE.) [![](https://www.slyinc.com/wp-content/uploads/2024/09/overcoming-dust-wp.webp "overcoming-dust-wp | Sly Air Pollution Control")](https://info.slyinc.com/dust-containment-wp?_gl=1%2Acr1uth%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTU3ODEuNDMuMC40MTU4MDM1MTE.) #### Overcoming the Most Challenging Industrial Dust Environments Do you know all you can about the challenging industrial dust environment? In this white paper, you’ll learn why being flexible is the excellent solution for dust collection: The Importance of Dust Control, The Confluence of Kst and Pmax for Combustibility, Conducting a Dust Hazard Analysis, Case Study on a Customized Solution [Read More](https://info.slyinc.com/dust-containment-wp?_gl=1%2Acr1uth%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTU3ODEuNDMuMC40MTU4MDM1MTE.) ##### Downloads --- - [Download the Replacement Parts Catalog](https://www.slyinc.com/wp-content/uploads/2025/01/SLY-Aftermarket-Web.pdf) - [Download the Dust Collection Maintenance Handbook](https://www.slyinc.com/wp-content/uploads/2024/08/DustCollectionMaintenance.pdf) --- ### [Dust Collector Valves](https://www.slyinc.com/products/dust-collectors/replacement-parts/dust-collector-valves/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![dust-collector-diaphragm-valve-repair](https://www.slyinc.com/wp-content/uploads/2024/11/dust-collector-diaphragm-valve-repair.jpg "dust-collector-diaphragm-valve-repair | Sly Air Pollution Control") # Dust Collector Valves **Sly Offers a Complete Range of Valves.** Sly now offers nearly all types of valves for dust collector replacement diaphragm valves, diaphragm valve repair kits, and solenoid valves. This newly enlarged line includes all major brands, such as Goyen, Asco, and Tae-Ha. We can help you if you have either Sly-branded dust collector equipment or other manufacturers’ equipment. Most dust collector valves and valve repair kits ship in two days. ![](https://www.slyinc.com/wp-content/uploads/2024/11/valves.jpg "valves | Sly Air Pollution Control") ## Types of Dust Collector Valves **Diaphragm Valve** – A compressed air valve operated by a solenoid valve that opens to allow a pulse to a row of bags. **Solenoid Valve** – An electromechanical plunger device that is either “normally open” or “normally closed”. In use with a baghouse, it is for the relief of air pressure to activate a compressed air device such as a diaphragm valve. **Valve Repair and Rebuild Kits** ![](https://www.slyinc.com/wp-content/uploads/2024/09/diaphragm-valves-Solenoids-300x200-1.jpg "diaphragm-valves-Solenoids-300x200-1 | Sly Air Pollution Control") ### Dust Collector Valve Brands Offered by SLY: - Goyen - Asco - Tae-Ha #### Parts Department [Contact Us](https://www.slyinc.com/contact/request-a-quote/) ###### Featured Resources [![](https://www.slyinc.com/wp-content/uploads/2024/08/SLY_WetScrubberBuyersGuideCover.png "SLY_WetScrubberBuyersGuideCover | Sly Air Pollution Control")](https://info.slyinc.com/dry-dust-collection-handbook-1?_gl=1%2Ait2bn9%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTU3ODEuNDMuMC40MTU4MDM1MTE.) #### Your Comprehensive Guide to Dust Collector Maintenance Now that you have the right dust collection system designed and installed, you want to make sure that it’s running at its optimal efficiency. For improved performance and reliability of your dust collection equipment, Sly recommends a schedule of routine inspections and the timely repair of damaged or malfunctioning equipment. [Read More](https://info.slyinc.com/dry-dust-collection-handbook-1?_gl=1%2Ait2bn9%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTU3ODEuNDMuMC40MTU4MDM1MTE.) [![](https://www.slyinc.com/wp-content/uploads/2024/09/sly-resource-thumb-maintenance-checklist-for-a-better-baghouse-parts-down-campaign.webp "sly-resource-thumb-maintenance-checklist-for-a-better-baghouse-parts-down-campaign | Sly Air Pollution Control")](https://info.slyinc.com/maintenance-checklist-for-a-better-baghouse-download-1?_gl=1%2Ait2bn9%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTU3ODEuNDMuMC40MTU4MDM1MTE.) #### Maintenance Checklist for a Better Baghouse Now that you have the right dust collection system designed and installed, you want to make sure that it’s running at its optimal efficiency. For improved performance and reliability of your dust collection equipment, Sly recommends a schedule of routine inspections and the timely repair of damaged or malfunctioning equipment. [Read More](https://info.slyinc.com/maintenance-checklist-for-a-better-baghouse-download-1?_gl=1%2Ait2bn9%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTU3ODEuNDMuMC40MTU4MDM1MTE.) [![](https://www.slyinc.com/wp-content/uploads/2024/09/overcoming-dust-wp.webp "overcoming-dust-wp | Sly Air Pollution Control")](https://info.slyinc.com/dust-containment-wp?_gl=1%2Acr1uth%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTU3ODEuNDMuMC40MTU4MDM1MTE.) #### Overcoming the Most Challenging Industrial Dust Environments Do you know all you can about the challenging industrial dust environment? In this white paper, you’ll learn why being flexible is the excellent solution for dust collection: The Importance of Dust Control, The Confluence of Kst and Pmax for Combustibility, Conducting a Dust Hazard Analysis, Case Study on a Customized Solution [Read More](https://info.slyinc.com/dust-containment-wp?_gl=1%2Acr1uth%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTU3ODEuNDMuMC40MTU4MDM1MTE.) ##### Downloads --- - [Download the Replacement Parts Catalog](https://www.slyinc.com/wp-content/uploads/2025/01/SLY-Aftermarket-Web.pdf) - [Download the Dust Collection Maintenance Handbook](https://www.slyinc.com/wp-content/uploads/2024/08/DustCollectionMaintenance.pdf) --- ### [Liquid Filters](https://www.slyinc.com/products/dust-collectors/replacement-parts/liquid-filters/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/11/parts-liquid-min-1.jpg "parts-liquid-min-1 | Sly Air Pollution Control") # Liquid Filters **High-Efficiency Liquid Filter Cartridges from Sly**. ### 600 Deep Pleat Series Filter Cartridge Introducing our new absolute rated filter cartridge, the 600 Deep Pleat Series filter cartridge. With a removal efficiency of 99%, it is available in filtration ranges from 1 to 40 microns. [600 Series Deep Pleated Liquid Cartridge Filter Spec Sheet/Additional Information (PDF)](https://www.slyinc.com/wp-content/uploads/2024/12/600-Deep-pleat-series.pdf) ![](https://www.slyinc.com/wp-content/uploads/2024/11/600_Series_Deep_Pleated_liquid_cartridge_filter-2.jpg "600_Series_Deep_Pleated_liquid_cartridge_filter-2 | Sly Air Pollution Control") ### High Efficiency Liquid Filter Bags - Micron ratings from 1.0 to 50.0 - All industry standard and custom sizes are available - Choice of steel ring or plastic flange - Wide chemical compatibility - Excellent oil absorbing capabilities - Handles on all bags - Efficiencies to 95.0% [High Efficiency Liquid Filter Bag Spec Sheet/Additional Information](https://www.slyinc.com/wp-content/uploads/2024/12/High-Efficiency-Filter-Bags.pdf) (PDF) ![](https://www.slyinc.com/wp-content/uploads/2024/09/500_Series_High_Performance_liquid_filter_bag-2.jpg "500_Series_High_Performance_liquid_filter_bag-2 | Sly Air Pollution Control") ### ESP Extended Surface Pleat Bag Filter Introducing the ESP Extended Surface Pleat bag filter. The ESP Extended Surface Pleat bag filter is designed for high dirt holding capacity and high flow. This is achieved by pleating two layers of nominal felt to create a pre-filter & final filter layer inside a standard Size #2 bag filter. [Extended Surface Pleated Liquid Filter Bag Spec Sheet/Additional Information](https://www.slyinc.com/wp-content/uploads/2024/12/ESP-Extended-Surface-Pleat.pdf) (PDF) ![](https://www.slyinc.com/wp-content/uploads/2024/09/Extended_surface_pleat_liquid_filter_bag-2.jpg "Extended_surface_pleat_liquid_filter_bag-2 | Sly Air Pollution Control") ### High Performance 500 Series Liquid Filter Bags - Micron ratings from 1.0 to 32 - Stainless steel ring standard - Wide chemical compatibility - Excellent oil absorbing capabilities - Handles on all bags - Absolute efficiencies to 99.0% [500 Series High Performance Liquid Filter Bag Spec Sheet/Additional Information](https://www.slyinc.com/wp-content/uploads/2024/12/High-Performance-500-Series.pdf) (PDF) ![](https://www.slyinc.com/wp-content/uploads/2024/11/500_Series_High_Performance_liquid_filter_bag-2.jpg "500_Series_High_Performance_liquid_filter_bag-2 | Sly Air Pollution Control") ### Standard Felt Liquid Filter Bags - Micron ratings from 1 to 200 - All industry standard & custom sizes available - Broad chemical compatibility - High flow/low pressure drop - Sewn or fully-welded construction - Handles on all bags - Choice of steel ring or plastic flange - Temperature ratings to 200ºF (PO), 275ºF (PE ), 425ºF (HT) and 500ºF (Teflon®) [Standard Felt Liquid Filter Bag Spec Sheet/Additional Information](https://www.slyinc.com/wp-content/uploads/2024/12/Standard-Felt-Filter.pdf) (PDF) ![Standard_felt_liquid_filter_bag](https://www.slyinc.com/wp-content/uploads/2024/11/Standard_felt_liquid_filter_bag-3.jpg "Standard_felt_liquid_filter_bag-3 | Sly Air Pollution Control") ### Standard Mesh Liquid Filter Bags *Monofilament & Multifilament* - Micron ratings from 1 to 1500 - All industry standard and custom sizes available - High flow/low pressure drop media - Surface-retention filtration - Wide chemical compatibility - Sewn construction - Handles standard on all bags - Choice of steel ring or plastic flange - Economical removal of non-deformable contaminants - Non-fiber releasing - Good removal efficiencies - Temperature ratings to 350ºF - Polyester and nylon materials meet FDA regulations for contact under CFR21, section 177.1520 - Silicone-free construction [Standard Mesh Liquid Filter Bag Spec Sheet/Additional Information](https://www.slyinc.com/wp-content/uploads/2024/12/Standard-Mesh-Filter.pdf) (PDF) ![](https://www.slyinc.com/wp-content/uploads/2024/09/Standard_mesh_liquid_filter_bag-4-1.jpg "Standard_mesh_liquid_filter_bag-4-1 | Sly Air Pollution Control") ### XOAM, Revolutionary Oil Absorbing Bag Introducing a new cost-effective filter bag for absolute filtration applications. This new revolutionary high-capacity oil absorbing filter bag called XOAM is uniquely designed to produce one of the highest capacity oil absorbing filter bags in the industry. The different layers of micro-fibers not only retain oil, but increase overall efficiency to 95% or greater on microns ranging from 1 to 50. This bag is also designed to fit into any standard Size #1 or #2 liquid housing and is available in our 7-in. steel or stainless steel ring and our 7-in. plastic flange which creates a more positive seal and is 100% recyclable. [XOAM Oil Absorbing Bag Spec Sheet/Additional Information](https://www.slyinc.com/wp-content/uploads/2024/12/XOAM-Revolutionary-Bag.pdf) (PDF) ![](https://www.slyinc.com/wp-content/uploads/2024/11/XOAM_oil_absorbing_bag-2.jpg "XOAM_oil_absorbing_bag-2 | Sly Air Pollution Control") ### IBF Filter For use on compact style bag systems: - Ideal for “Low Flow” applications/systems - Wide Chemical Compatibility - Constructed using Monofilament Mesh Materials – No loose fibers – Uniform pore size – Structurally strong - Fully welded side seam & end caps – Eliminates bypass [IBF Compact Style Filter Bag Spec Sheet/Additional Information ](https://www.slyinc.com/wp-content/uploads/2024/12/IBF-Compact-Filter.pdf)(PDF) ![](https://www.slyinc.com/wp-content/uploads/2024/09/IBF_compact_style_filter-1.jpg "IBF_compact_style_filter-1 | Sly Air Pollution Control") ### Nominal Depth Cartridge Pleated Filter Introducing a new nominal rated filter cartridge, the NDC Pleated Filter. Due to the unique design of this pleated cartridge, it provides 5 to 10 times the surface area (depending on micron). Dirt holding capacity and efficiency are maximized by pleating two layers of nominal felt to create a pre-filter & final filter layer. [NDC Pleated Filter Cartridge Spec Sheet/Additional Information](https://www.slyinc.com/wp-content/uploads/2024/12/NDC-Pleated-Filter.pdf) (PDF) ![](https://www.slyinc.com/wp-content/uploads/2024/09/nomial-depth_Pleated_filter_cartridge-2.jpg "nomial-depth_Pleated_filter_cartridge-2 | Sly Air Pollution Control") ### Polyester Phenolic Treatment (PEPT) Deep Pleated Liquid Cartridge Filter The Polyester Phenolic Treatment (PEPT’s) combines the advantages of non-compressible polyester felt with excellent removal of gel-like contaminants into a cartridge format. In doing so, we maximize the available filtration surface area thus extending the life over a bag filter. [PEPT Liquid Cartridge Spec Sheet/Additional Information](https://www.slyinc.com/wp-content/uploads/2024/12/PEPT-Deep-Pleated-Filter.pdf) (PDF) ![](https://www.slyinc.com/wp-content/uploads/2024/11/PEPT_liquid_cartridge-2.jpg "PEPT_liquid_cartridge-2 | Sly Air Pollution Control") ### Polyester Phenolic Treatment (PEPT) Liquid Filter Bag The Polyester Phenolic Treatment (PEPT’s) design incorporates single or dual layers of fully infused Phenolic Resin Textile. The PEPT’s non-compressible depth is more effective than conventional filters in retaining gel-like particles. [Polyester Phenolic Treatment (PEPT) Liquid Filter Bag Spec Sheet/Additional Information](https://www.slyinc.com/wp-content/uploads/2024/12/PEPT-Liquid-Filter.pdf) (PDF) ![](https://www.slyinc.com/wp-content/uploads/2024/09/PEPT_liquid_filter_bag-2.jpg "PEPT_liquid_filter_bag-2 | Sly Air Pollution Control") ### Dual Flow Welded Filter Bags We now offer sizes #1 & #2 Polypropylene and Polyester dual flow welded filter bags that will provide exceptional benefits to you. - They are competitively priced to keep your initial cost to a minimum. - Standard 5 to 7 days lead time. - Fit in current competitor’s baskets. - No tools needed for installation or removal. [Dual Flow Welded Filter Bags Spec Sheet/Additional Information](https://www.slyinc.com/wp-content/uploads/2024/12/DF-Welded-Bag.pdf) (PDF) ![](https://www.slyinc.com/wp-content/uploads/2024/11/Untitled-2.jpg "Untitled-2 | Sly Air Pollution Control") #### Parts Department [Contact Us](https://www.slyinc.com/contact/request-a-quote/) ###### Featured Resources [![](https://www.slyinc.com/wp-content/uploads/2024/08/SLY_WetScrubberBuyersGuideCover.png "SLY_WetScrubberBuyersGuideCover | Sly Air Pollution Control")](https://info.slyinc.com/dry-dust-collection-handbook-1?_gl=1%2A13pqj98%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTQ4NTYuMjIuMC40MTU4MDM1MTE.) #### Your Comprehensive Guide to Dust Collector Maintenance Now that you have the right dust collection system designed and installed, you want to make sure that it’s running at its optimal efficiency. For improved performance and reliability of your dust collection equipment, Sly recommends a schedule of routine inspections and the timely repair of damaged or malfunctioning equipment. [Read More](https://info.slyinc.com/dry-dust-collection-handbook-1?_gl=1%2A13pqj98%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTQ4NTYuMjIuMC40MTU4MDM1MTE.) [![](https://www.slyinc.com/wp-content/uploads/2024/09/sly-resource-thumb-maintenance-checklist-for-a-better-baghouse-parts-down-campaign.webp "sly-resource-thumb-maintenance-checklist-for-a-better-baghouse-parts-down-campaign | Sly Air Pollution Control")](https://info.slyinc.com/maintenance-checklist-for-a-better-baghouse-download-1?_gl=1%2A13pqj98%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTQ4NTYuMjIuMC40MTU4MDM1MTE.) #### Maintenance Checklist for a Better Baghouse Now that you have the right dust collection system designed and installed, you want to make sure that it’s running at its optimal efficiency. For improved performance and reliability of your dust collection equipment, Sly recommends a schedule of routine inspections and the timely repair of damaged or malfunctioning equipment. [Read More](https://info.slyinc.com/maintenance-checklist-for-a-better-baghouse-download-1?_gl=1%2A13pqj98%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTQ4NTYuMjIuMC40MTU4MDM1MTE.) [![](https://www.slyinc.com/wp-content/uploads/2024/09/overcoming-dust-wp.webp "overcoming-dust-wp | Sly Air Pollution Control")](https://info.slyinc.com/dust-containment-wp?_gl=1%2Ah1c5gs%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTQ4NTYuMjIuMC40MTU4MDM1MTE.) #### Overcoming the Most Challenging Industrial Dust Environments Do you know all you can about the challenging industrial dust environment? In this white paper, you’ll learn why being flexible is the excellent solution for dust collection: The Importance of Dust Control, The Confluence of Kst and Pmax for Combustibility, Conducting a Dust Hazard Analysis, Case Study on a Customized Solution [Read More](https://info.slyinc.com/dust-containment-wp?_gl=1%2Ah1c5gs%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTQ4NTYuMjIuMC40MTU4MDM1MTE.) ##### Downloads --- - [Download the Replacement Parts Catalog](https://www.slyinc.com/wp-content/uploads/2025/01/SLY-Aftermarket-Web.pdf) - [Download the Filter Finder Questionnaire](https://www.slyinc.com/pdfs/Filter_Finder.pdf) --- ### [Envelope Bags](https://www.slyinc.com/products/dust-collectors/replacement-parts/envelope-bags/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/11/parts-envelope-bags-min.jpg "parts-envelope-bags-min | Sly Air Pollution Control") # Envelope Bags **Offering the Broadest Line of Dust Collector Envelope-Type Bags.** ## Dust Collector Envelope Bag Line --- Envelope rectangular bags pack more filter cloth per cubic foot into the smallest space. Sly offers the broadest line of dust collector envelope-type bags anywhere. ![](https://www.slyinc.com/wp-content/uploads/2024/09/img-envelope.png "img-envelope | Sly Air Pollution Control") #### Parts Department [Contact Us](https://www.slyinc.com/contact/request-a-quote/) ###### Featured Resources [![](https://www.slyinc.com/wp-content/uploads/2024/08/SLY_WetScrubberBuyersGuideCover.png "SLY_WetScrubberBuyersGuideCover | Sly Air Pollution Control")](https://info.slyinc.com/dry-dust-collection-handbook-1?_gl=1%2A1m6sl66%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTUxMzkuMTAuMC40MTU4MDM1MTE.) #### Your Comprehensive Guide to Dust Collector Maintenance Now that you have the right dust collection system designed and installed, you want to make sure that it’s running at its optimal efficiency. For improved performance and reliability of your dust collection equipment, Sly recommends a schedule of routine inspections and the timely repair of damaged or malfunctioning equipment. [Read More](https://info.slyinc.com/dry-dust-collection-handbook-1?_gl=1%2A1m6sl66%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTUxMzkuMTAuMC40MTU4MDM1MTE.) [![](https://www.slyinc.com/wp-content/uploads/2024/09/sly-resource-thumb-maintenance-checklist-for-a-better-baghouse-parts-down-campaign.webp "sly-resource-thumb-maintenance-checklist-for-a-better-baghouse-parts-down-campaign | Sly Air Pollution Control")](https://info.slyinc.com/maintenance-checklist-for-a-better-baghouse-download-1?_gl=1%2A1m6sl66%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTUxMzkuMTAuMC40MTU4MDM1MTE.) #### Maintenance Checklist for a Better Baghouse Now that you have the right dust collection system designed and installed, you want to make sure that it’s running at its optimal efficiency. For improved performance and reliability of your dust collection equipment, Sly recommends a schedule of routine inspections and the timely repair of damaged or malfunctioning equipment. [Read More](https://info.slyinc.com/maintenance-checklist-for-a-better-baghouse-download-1?_gl=1%2A1m6sl66%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTUxMzkuMTAuMC40MTU4MDM1MTE.) [![](https://www.slyinc.com/wp-content/uploads/2024/09/overcoming-dust-wp.webp "overcoming-dust-wp | Sly Air Pollution Control")](https://info.slyinc.com/dust-containment-wp?_gl=1%2A5d2o9n%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTUxMzkuMTAuMC40MTU4MDM1MTE.) #### Overcoming the Most Challenging Industrial Dust Environments Do you know all you can about the challenging industrial dust environment? In this white paper, you’ll learn why being flexible is the excellent solution for dust collection: The Importance of Dust Control, The Confluence of Kst and Pmax for Combustibility, Conducting a Dust Hazard Analysis, Case Study on a Customized Solution [Read More](https://info.slyinc.com/dust-containment-wp?_gl=1%2A5d2o9n%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTUxMzkuMTAuMC40MTU4MDM1MTE.) ##### Downloads --- - [Download the Replacement Parts Catalog](https://www.slyinc.com/wp-content/uploads/2025/01/SLY-Aftermarket-Web.pdf) - [Download the Dust Collection Maintenance Handbook](https://www.slyinc.com/pdfs/DustCollectionMaintenance.pdf) --- ### [Cartridge Filters](https://www.slyinc.com/products/dust-collectors/replacement-parts/cartridge-filters/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/11/parts-cartridge-filter-min.jpg "parts-cartridge-filter-min | Sly Air Pollution Control") # Cartridge Filters **Newly Expanded Cartridge Filter Line.** ## Replacement Dust Collector Cartridges --- SLY, LLC. now offers replacement dust collector cartridge filters for nearly every major manufacturer of cartridge-style dust collectors. Most common designs can be shipped within two days of receiving an order. This newly expanded line includes all major media: cellulose/polyester blends, cellulose flame retardant, cellulose/polyester flame retardant, carbon impregnated, spun-bonded hydrophobic or oleophobic, or PTFE surface treatment. Custom cartridges can be fabricated if a sample or specifications are provided. ![](https://www.slyinc.com/wp-content/uploads/2024/10/vertical-collector-cartridge.jpg "vertical-collector-cartridge | Sly Air Pollution Control") #### Parts Department [Contact Us](https://www.slyinc.com/contact/request-a-quote/) ###### Featured Resources [![](https://www.slyinc.com/wp-content/uploads/2024/08/SLY_WetScrubberBuyersGuideCover.png "SLY_WetScrubberBuyersGuideCover | Sly Air Pollution Control")](https://info.slyinc.com/dry-dust-collection-handbook-1?_gl=1%2A1m6sl66%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTUxMzkuMTAuMC40MTU4MDM1MTE.) #### Your Comprehensive Guide to Dust Collector Maintenance Now that you have the right dust collection system designed and installed, you want to make sure that it’s running at its optimal efficiency. For improved performance and reliability of your dust collection equipment, Sly recommends a schedule of routine inspections and the timely repair of damaged or malfunctioning equipment. [Read More](https://info.slyinc.com/dry-dust-collection-handbook-1?_gl=1%2A1m6sl66%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTUxMzkuMTAuMC40MTU4MDM1MTE.) [![](https://www.slyinc.com/wp-content/uploads/2024/09/sly-resource-thumb-maintenance-checklist-for-a-better-baghouse-parts-down-campaign.webp "sly-resource-thumb-maintenance-checklist-for-a-better-baghouse-parts-down-campaign | Sly Air Pollution Control")](https://info.slyinc.com/maintenance-checklist-for-a-better-baghouse-download-1?_gl=1%2A1m6sl66%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTUxMzkuMTAuMC40MTU4MDM1MTE.) #### Maintenance Checklist for a Better Baghouse Now that you have the right dust collection system designed and installed, you want to make sure that it’s running at its optimal efficiency. For improved performance and reliability of your dust collection equipment, Sly recommends a schedule of routine inspections and the timely repair of damaged or malfunctioning equipment. [Read More](https://info.slyinc.com/maintenance-checklist-for-a-better-baghouse-download-1?_gl=1%2A1m6sl66%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTUxMzkuMTAuMC40MTU4MDM1MTE.) [![](https://www.slyinc.com/wp-content/uploads/2024/09/overcoming-dust-wp.webp "overcoming-dust-wp | Sly Air Pollution Control")](https://info.slyinc.com/dust-containment-wp?_gl=1%2A5d2o9n%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTUxMzkuMTAuMC40MTU4MDM1MTE.) #### Overcoming the Most Challenging Industrial Dust Environments Do you know all you can about the challenging industrial dust environment? In this white paper, you’ll learn why being flexible is the excellent solution for dust collection: The Importance of Dust Control, The Confluence of Kst and Pmax for Combustibility, Conducting a Dust Hazard Analysis, Case Study on a Customized Solution [Read More](https://info.slyinc.com/dust-containment-wp?_gl=1%2A5d2o9n%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzA1NDgxOC4xNS4xLjE3MzcwNTUxMzkuMTAuMC40MTU4MDM1MTE.) ##### Downloads --- - [Download the Replacement Parts Catalog](https://www.slyinc.com/wp-content/uploads/2025/01/SLY-Aftermarket-Web.pdf) - [Download the Dust Collection Maintenance Handbook](https://www.slyinc.com/pdfs/DustCollectionMaintenance.pdf) --- ### [Aramid (MX)](https://www.slyinc.com/products/dry-dust-collector-filter-bags/aramid-mx/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![filter-bags-dust-collectors](https://www.slyinc.com/wp-content/uploads/2024/11/filter-bags-dust-collectors.jpg "filter-bags-dust-collectors | Sly Air Pollution Control") # Aramid (MX) **Aramid Offers a Good Resistance to Alkalis.** ## Guide to Aramid Filter Bag Applications --- **Aramid Felt** (common brand: Nomex®) Normal maximum continuous operating temperature is 375°F. General applications for Aramid felt include: highly abrasive dust applications, electric arc furnaces, high-temperature dryers, cupolas, and chemical applications where high temperatures exist. Aramid offers a good resistance to alkalis under most conditions. Most mineral oxides cause degradation and partial decomposition. Aramid withstands common organic solvents very well. Some phenolic compounds cause solubility. ![fabric guide thumbnail](https://www.slyinc.com/wp-content/uploads/2024/12/fabric-guide-thumbnail.jpg "fabric-guide-thumbnail | Sly Air Pollution Control") Download our **Fabric Filter Properties Guide** to compare fabric characteristics to choose the best for your application. [Download](https://www.slyinc.com/wp-content/uploads/2024/12/Properties-of-Filtration-Fabrics-12-24.pdf) ![chemical](https://www.slyinc.com/wp-content/uploads/2024/12/chemical-thumbnail.jpg "chemical-thumbnail | Sly Air Pollution Control") Download our **Chemical Compatibility Guide** to compare fabric choice suitability for different chemicals. [Download](https://www.slyinc.com/wp-content/uploads/2024/12/Chemical-Compatibility-Fabric-Guide-1224.pdf) ARAMID OPTIONS --- **Available Finishes for Aramid:** - Plain (PL), Fire Retardant (FR), PTFE membrane (XP) - Singed (SI), SlyHE (High efficiency), Glazed (GL) - ST-01 (Oleophobic), ST-04 (Code 9) - ST-08 (double dip ST-01), ST-09, ST-10, ST-11 **Available Weights for Aramid:** - 14 oz./yd2 - 16 oz./yd2 - 18 oz./yd2 [Types of Finishes](https://www.slyinc.com/products/dry-dust-collector-filter-bags/filter-bag-finishes/) ### Aramid Felt Common Finishes **Singed** (SIMX) – The felt is singed on the dust cake side for improved cake release. The process involves exposing the surface fibers to an open flame that melts back the loose fiber ends to which dust particles could adhere. **Glazed** (GLMX) – This process involves running the felt through two heated rollers to melt back the loose fiber ends, improving the cake release. The process can also compress the felt to smooth the surface, further improving the cake release. **SlyTech-01** (ST-01) – Oleophobic -water and oil repellent finish. SlyTech-01 is a complete PTFE bath that provides an excellent cake-release finish to each fiber. This finish is cheaper and more durable than a membrane that can be easily scratched. The information provided on this website is intended as a guide for filter bag applications. SLY, LLC. makes no guarantee about the performance or results you can expect from the application of this information unless provided in writing from our staff. Need Help Selecting Filter Media? [Ask The Experts](/contact) --- ### [Acrylic (AC)](https://www.slyinc.com/products/dry-dust-collector-filter-bags/acrylic-ac/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![filter-bags-dust-collectors](https://www.slyinc.com/wp-content/uploads/2024/11/filter-bags-dust-collectors.jpg "filter-bags-dust-collectors | Sly Air Pollution Control") # Acrylic (AC) **High Resistance to Hydrolysis and Good Temperature Resistance**. ## Guide to Acrylic Felt for Filter Bag Applications --- **Acrylic Felt** (Homopolymer Acrylic Felt) – Normal maximum continuous operating temperature is 275°F. General applications include: dryers, electric furnaces, aluminum reduction, and primary or secondary smelting. The chemical resistance is satisfactory to most mineral and organic acids. Superior to polyamides and polyesters in this regard. Acrylic resistance to alkalis is inferior to most fibers except natural protein fibers such as silk and wool. Acrylic has fair resistance to most oxidizing agents and is superior to polyamides and protein fibers in this respect. It has excellent resistance to most common organic solvents. Overall, acrylic has good acid resistance, high resistance to hydrolysis and good temperature resistance. Acrylic is more costly than polyester and polypropylene. ![fabric guide thumbnail](https://www.slyinc.com/wp-content/uploads/2024/12/fabric-guide-thumbnail.jpg "fabric-guide-thumbnail | Sly Air Pollution Control") Download our **Fabric Filter Properties Guide** to compare fabric characteristics to choose the best for your application. [Download](https://www.slyinc.com/wp-content/uploads/2024/12/Properties-of-Filtration-Fabrics-12-24.pdf) ![chemical](https://www.slyinc.com/wp-content/uploads/2024/12/chemical-thumbnail.jpg "chemical-thumbnail | Sly Air Pollution Control") Download our **Chemical Compatibility Guide** to compare fabric choice suitability for different chemicals. [Download](https://www.slyinc.com/wp-content/uploads/2024/12/Chemical-Compatibility-Fabric-Guide-1224.pdf) ACRYLIC FELT OPTIONS --- **Available Finishes for Acrylic Felt:** - Plain (PL), Fire Retardant (FR), PTFE membrane (XP) - Singed (SI), SlyHE (High efficiency), Glazed (GL) - ST-01 (Oleophobic), ST-04 (Code 9), SlyCharge (EX) - ST-08 (double dip ST-01), ST-09, ST-10, ST-12 (SS fibers), Epitropic (EP) **Available Weights for Acrylic Felt:** - 16 oz./yd2 - 18 oz./yd2 [Types of Finishes](https://www.slyinc.com/products/dry-dust-collector-filter-bags/filter-bag-finishes/) ### Acrylic Felt Common Finishes **Singed** (SIAC) – The felt is singed on the dust cake side for improved cake release. The process involves exposing the surface fibers to an open flame that melts back the loose fiber ends to which dust particles could adhere. **Glazed** (GLAC) – This process involves running the felt through two heated rollers to melt back the loose fiber ends improving the cake release. The process can also compress the felt to smooth the surface, further improving the cake release. **SlyTech-01** (ST-01) – Oleophobic -water and oil repellent finish. SlyTech-01 is a complete PTFE bath which provides an excellent cake release finish to each fiber. This finish is cheaper and more durable than a membrane that can be easily scratched. The information provided on this website is intended as a guide for filter bag applications. SLY, LLC. makes no guarantee about the performance or results you can expect from the application of this information unless provided in writing from our staff. Need Help Selecting Filter Media? [Ask The Experts](/contact) --- ### [Nylon (NYL)](https://www.slyinc.com/products/dry-dust-collector-filter-bags/nylon-nyl/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![filter-bags-dust-collectors](https://www.slyinc.com/wp-content/uploads/2024/11/filter-bags-dust-collectors.jpg "filter-bags-dust-collectors | Sly Air Pollution Control") # Nylon (NYL) **For Highly Abrasive Dust Applications**. ## Nylon Felt: Applications, Properties, and Finishes --- **Nylon Felt** (NYL) Normal maximum continuous operating temperature is 250°F. Nylon felt is typically used for highly abrasive dust applications. It has good resistance to alkalis under most conditions, but most mineral oxides cause degradation and partial decomposition. High concentrations and temperatures may cause complete degradation. This media holds up to common organic solvents very well. ![fabric guide thumbnail](https://www.slyinc.com/wp-content/uploads/2024/12/fabric-guide-thumbnail.jpg "fabric-guide-thumbnail | Sly Air Pollution Control") Download our **Fabric Filter Properties Guide** to compare fabric characteristics to choose the best for your application. [Download](https://www.slyinc.com/wp-content/uploads/2024/12/Properties-of-Filtration-Fabrics-12-24.pdf) ![chemical](https://www.slyinc.com/wp-content/uploads/2024/12/chemical-thumbnail.jpg "chemical-thumbnail | Sly Air Pollution Control") Download our **Chemical Compatibility Guide** to compare fabric choice suitability for different chemicals. [Download](https://www.slyinc.com/wp-content/uploads/2024/12/Chemical-Compatibility-Fabric-Guide-1224.pdf) NYLON FELT OPTIONS --- **Available Finishes for Nylon Felt:** - Plain (PL), Glazed (GL) - Singed (SI), SlyHE (High efficiency) - ST-01 (Oleophobic), ST-04 (Code 9), ST-12 (SS Fibers) **Available Weights for Nylon Felt:** - Call for availability [Types of Finishes](https://www.slyinc.com/products/dry-dust-collector-filter-bags/filter-bag-finishes/) ### Nylon Felt Common Finishes **Singed Polyester** (SINYL) – The felt is singed on the dust cake side for improved cake release. Most common type of filter media used in modern baghouses. The process involves exposing the surface fibers to an open flame that melts back the loose fiber ends to which dust particles could adhere. **Glazed Polyester** (GLNYL) – This process involves running the felt through two heated rollers to melt back the loose fiber ends improving the cake release. The process can also compress the felt to smooth the surface, further improving the cake release. The information provided on this website is intended as a guide for filter bag applications. SLY, LLC. makes no guarantee about the performance or results you can expect from the application of this information unless provided in writing from our staff. Need Help Selecting Filter Media? [Ask The Experts](/contact) --- ### [Polypropylene (PP)](https://www.slyinc.com/products/dry-dust-collector-filter-bags/polypropylene-pp/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![filter-bags-dust-collectors](https://www.slyinc.com/wp-content/uploads/2024/11/filter-bags-dust-collectors.jpg "filter-bags-dust-collectors | Sly Air Pollution Control") # Polypropylene (PP) **High Strength, Excellent Resistance**. ## Polypropylene Felt: Temperature, Resistance, and Finishes --- **Polypropylene Felt:** Normal maximum continuous operating temperature is 170°F. Polypropylene felt is used for general applications where chemical and moisture attacks other fibers. Polypropylenes offer high strength, excellent resistance to most acids and alkalis. Smoothness of fibers allows good cake release and resistance to blinding. Moisture absorption is virtually non-existent. This media has very good resistance to both mineral and organic acids and generally good resistance to alkalis with the exception of sodium and potassium hydroxide above 200°F. Good resistance to most reducing agents. Polypropylene also has fair resistance to most organic solvents with the exception of ketones, esters, and chlorinated hydrocarbons. ![fabric guide thumbnail](https://www.slyinc.com/wp-content/uploads/2024/12/fabric-guide-thumbnail.jpg "fabric-guide-thumbnail | Sly Air Pollution Control") Download our **Fabric Filter Properties Guide** to compare fabric characteristics to choose the best for your application. [Download](https://www.slyinc.com/wp-content/uploads/2024/12/Properties-of-Filtration-Fabrics-12-24.pdf) ![chemical](https://www.slyinc.com/wp-content/uploads/2024/12/chemical-thumbnail.jpg "chemical-thumbnail | Sly Air Pollution Control") Download our **Chemical Compatibility Guide** to compare fabric choice suitability for different chemicals. [Download](https://www.slyinc.com/wp-content/uploads/2024/12/Chemical-Compatibility-Fabric-Guide-1224.pdf) POLYPROPYLENE OPTIONS --- **Available Finishes for Polyester:** - Plain (PL), Fire Retardant (FR), PTFE membrane (XP) - Singed (SI), Glazed (GL), Epitropic (EP), SlyHE (High efficiency) - ST-01 (Oleophobic), ST-04 (Code 9), SlyCharge (EX) - ST-09, ST-10, ST-11, ST-12 (SS fibers) **Available Weights for Polypropylene:** - 16 oz./yd2 [Types of Finishes](https://www.slyinc.com/products/dry-dust-collector-filter-bags/filter-bag-finishes/) ### Polypropylene Felt Common Finishes **Singed** (SIPP) – The felt is singed on the dust cake side for improved cake release. The process involves exposing the surface fibers to an open flame that melts back the loose fiber ends to which dust particles could adhere. **Glazed (GLPP)** – This process involves running the felt through two heated rollers to melt back the loose fiber ends improving the cake release. The process can also compress the felt to smooth the surface, further improving the cake release. **SlyTech-01** (ST-01) – Oleophobic -water and oil repellent finish. SlyTech-01 is a complete PTFE bath which provides an excellent cake release finish to each fiber. This finish is cheaper and more durable than a membrane that can be easily scratched. [Click here](https://www.slyinc.com/wp-content/uploads/2024/12/Sly-Tech-01.pdf) for more information on ST-01. The information provided on this website is intended as a guide for filter bag applications. SLY, LLC. makes no guarantee about the performance or results you can expect from the application of this information unless provided in writing from our staff. Need Help Selecting Filter Media? [Ask The Experts](/contact) --- ### [High Efficiency Felts (SLYHE)](https://www.slyinc.com/products/dry-dust-collector-filter-bags/high-efficiency-felts-slyhe/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![filter-bags-dust-collectors](https://www.slyinc.com/wp-content/uploads/2024/11/filter-bags-dust-collectors.jpg "filter-bags-dust-collectors | Sly Air Pollution Control") # High Efficiency Felts (SLYHE) **Providing up to Ten Times the Efficiency.** ## Advantages of SlyHE Felts Over Commodity Felts and Membranes --- **SlyHE** Sly High Efficiency Felt (micro pore sized fibers) designed for fine pollutants. Microfibers are a great solution to fine, uniform, free-flowing dust and fine solids in liquid process slurries. Combinations of finish and felts with SlyHE are capable of emissions below 1mg/m³ or .0004 grains/ft³. Our high efficiency felts are available in both regular and high temperature (Aramid) applications. **SlyHe vs. Commodity Felts** – Because fiber surface area and separation efficiency are directly related, SlyHE concept felts are capable of providing as much as ten times the efficiency of conventional felts used in general filtration applications. This capability is a result of ultra-fine fibers commonly known as “microfibers”. The SlyHE felts use a proprietary blend that includes a high percentage of micro-denier (<1.0 denier) fibers, thereby significantly increasing surface area and reducing pore size openings resulting in a high efficiency felt, while the weight remains the same. Within the SlyHE concept, any fiber or combination of fibers can be used to create an ultra-high efficiency felt. - Higher filtration efficiency due to a surface orientated filtration - Extremely low emissions rates - Extended bag life by reduced cleaning intervals **SlyHE vs. Membranes** – Since the performance of the SlyHE felts are based on the total felt design, including a micro-denier fiber blend and heavy duty scrim, they have significant advantages over the PTFE membrane laminated felts that rely on the fragile micro-thin lamination. - High efficiency without a fragile membrane laminate - Strong and durable - Able to handle oily, fatty, moist or abrasive dusts - Can handle Alcohol compounds - Uniform and consistent - No special installation required - Cost effective ### Examples of Successful Applications #### Carbon Black #### Resin Coated Silica Sand #### Color Pigments #### Barite #### Calcium Caronate ![fabric guide thumbnail](https://www.slyinc.com/wp-content/uploads/2024/12/fabric-guide-thumbnail.jpg "fabric-guide-thumbnail | Sly Air Pollution Control") Download our **Fabric Filter Properties Guide** to compare fabric characteristics to choose the best for your application. [Download](https://www.slyinc.com/wp-content/uploads/2024/12/Properties-of-Filtration-Fabrics-12-24.pdf) ![chemical](https://www.slyinc.com/wp-content/uploads/2024/12/chemical-thumbnail.jpg "chemical-thumbnail | Sly Air Pollution Control") Download our **Chemical Compatibility Guide** to compare fabric choice suitability for different chemicals. [Download](https://www.slyinc.com/wp-content/uploads/2024/12/Chemical-Compatibility-Fabric-Guide-1224.pdf) SlyHE FELT OPTIONS --- **Available SlyHE Felts:** - Polypropylene - Polyester - Homopolymer Acrylic - Nomex® [SlyHE Info Sheet](https://www.slyinc.com/wp-content/uploads/2024/12/Sly-HE.pdf) The information provided on this website is intended as a guide for filter bag applications. SLY, LLC. makes no guarantee about the performance or results you can expect from the application of this information unless provided in writing from our staff. Need Help Selecting Filter Media? [Ask The Experts](/contact) --- ### [Services](https://www.slyinc.com/services/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/10/baghouse-analysis-services.jpg "baghouse-analysis-services | Sly Air Pollution Control") # Services **Rely on Sly to analyze your baghouse and provide recommendations to keep your air pollution control system running smoothly.** ## Baghouse Analysis Services --- At Sly, part of our mission is helping our customers focus on what they do best – running their business profitably – while we guide them toward the most efficient and cost-effective air pollution control solutions for their specific requirements. To further this mission, we offer our customers the value-added services of baghouse bag analysis and particle size analysis. ![](https://www.slyinc.com/wp-content/uploads/2024/10/baghouse-cages-analysis.jpg "baghouse-cages-analysis | Sly Air Pollution Control") ## Filter Bag Failure Analysis Services Replacing filter bags is among a baghouse system’s most significant operating expenses. However, compromising on filter quality to get a lower price is almost invariably a poor decision over the system’s lifetime. Symptoms of underperforming bags include high-pressure drops, increased resistance to flow, poor mechanical characteristics, and unacceptable particulate emissions. By analyzing baghouse filters that have failed in use and combining those lab findings with your operating data, Sly can diagnose the source of your problem and recommend the appropriate corrective action, such as an alternative bag type better suited to your dust’s particle size, chemistry, operating conditions, etc. Improving the performance of your filter media in terms of lower emissions, higher airflow, and reductions in lost production due to unscheduled downtime can also help you gain better control over your total system operating cost. Sly’s filter bag failure analysis services consider the five modes of filter failure: mechanical strength/wear, chemical degradation, thermal degradation, dust penetration/media blinding, and incorrect design. Learn More [Contact Us](https://www.slyinc.com/contact/) ### Bag tests performed include: - **Permeability Testing:** Permeability is the volumetric flow rate, measured in cubic feet per minute (cfm), through a square foot of filter media at a pressure differential of 0.5” water gauge (w.g.). - **Mullen Burst Strength Test:** This test measures the two-dimensional, or planar, strength of the media in pounds per square inch. - **Tensile Strength Test:** This test measures the directional strength of the media in pounds per square inch. - **Microscopy:** A light microscope is often used to supplement the visual analysis of a filter sample to determine the particulate interactions with the filter surface. Cross-section microscopic photographs are used to analyze dust penetration into the media. Here’s an example of the report we produce on your filter bag failure analysis. [View Example Report](https://www.slyinc.com/wp-content/uploads/2024/08/SLY-Sample-Bag-Analysis.pdf) ### Particle Analysis Services Understanding the characteristics of the dust being filtered starts with measuring bulk density and particle size distribution. - **Bulk density** is a weight per unit volume measurement expressed in grams per cubic centimeter or pounds per cubic foot. The object of the analysis is to determine the bulk or apparent density of dust. This data can then be used to diagnose re-entrainment or aid in fabric filter design. - **The particle size distribution test** determines the range of particle sizes present in a dust sample. The results are presented in terms of particle size versus the cumulative percentage of total weight or volume. When plotted on a log-probability graph, the mass-mean diameter can be determined. This characteristic parameter of the dust can be used to predict filter performance in applications where similar dusts are being used. Here’s an example of the report we will produce for your particle size analysis. [View Example Report](https://www.slyinc.com/wp-content/uploads/2024/08/SLY-Sample-Provided-Dust-Sample-2-1.pdf) #### Featured Videos Sly has produced a series of informative videos to help you optimize the performance of your dust collector or baghouse. **Start-up Procedure for a Dust Collector or Baghouse** **Anatomy of a Baghouse** --- ### [Cotton (CT)](https://www.slyinc.com/products/dry-dust-collector-filter-bags/cotton-ct/) **Published:** August 5, 2024 **Author:** Mike Eaton **Content:** ![filter-bags-dust-collectors](https://www.slyinc.com/wp-content/uploads/2024/11/filter-bags-dust-collectors.jpg "filter-bags-dust-collectors | Sly Air Pollution Control") # Cotton (CT) **Good Chemical Resistance in Dry, Ambient Conditions.** ## Guide to Cotton Filter Bag Applications --- **Woven Cotton** (CT) Normal maximum continuous operating temperature is 180°F. Woven cotton is typically used on shaker type collectors. General applications include: cleaning rooms, atmospheric air cleaning, woodworking applications, cement & rock products, and other general application handling ambient air. Chemical resistance is poor and flammability is high. Cotton filters offer good chemical resistance in dry, ambient conditions and is not recommended where mineral acids and oxidizing agents are present. These filters offer good resistance to both flex and flat abrasion. Cotton has excellent clean-down where static charge tends to hold dust cake on other fibers. Cotton is available with a flame retardant finish **Cotton Sateen** (special woven stitch) – Call office for information and availability (9.7 oz. availability only). ![fabric guide thumbnail](https://www.slyinc.com/wp-content/uploads/2024/12/fabric-guide-thumbnail.jpg "fabric-guide-thumbnail | Sly Air Pollution Control") Download our **Fabric Filter Properties Guide** to compare fabric characteristics to choose the best for your application. [Download](https://www.slyinc.com/wp-content/uploads/2024/12/Properties-of-Filtration-Fabrics-12-24.pdf) ![chemical](https://www.slyinc.com/wp-content/uploads/2024/12/chemical-thumbnail.jpg "chemical-thumbnail | Sly Air Pollution Control") Download our **Chemical Compatibility Guide** to compare fabric choice suitability for different chemicals. [Download](https://www.slyinc.com/wp-content/uploads/2024/12/Chemical-Compatibility-Fabric-Guide-1224.pdf) COTTON OPTIONS --- **Available Finishes for Cotton:** - Plain (PL) - Fire Retardant (FR) **Available Weights for Cotton:** - 9.7 oz./yd2 [Types of Finishes](https://www.slyinc.com/products/dry-dust-collector-filter-bags/filter-bag-finishes/) The information provided on this website is intended as a guide for filter bag applications. SLY, LLC. makes no guarantee about the performance or results you can expect from the application of this information unless provided in writing from our staff. Need Help Selecting Filter Media? [Ask The Experts](/contact) --- ### [Polyester (PE)](https://www.slyinc.com/products/dry-dust-collector-filter-bags/polyester-pe/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![filter-bags-dust-collectors](https://www.slyinc.com/wp-content/uploads/2024/11/filter-bags-dust-collectors.jpg "filter-bags-dust-collectors | Sly Air Pollution Control") # Polyester (PE) **The Most Commonly Used and Cost-Effective Filter**. ## Why Choose Polyester Felt? --- ###### Polyester Temperature Range Polyester Felt (PE) The most commonly used and cost-effective filter felt in modern pulse jet style baghouses. Typical applications range from cement plants to electric furnaces. It has a normal maximum continuous operating temperature is 275°F. Polyester filters offer very good resistance to chemicals, abrasion, and dry heat degradation. This filter is good for dry heat applications and superior to other synthetics with the exception of Nomex® (Aramid) and Teflon® in this regard. Polyester is not a good choice for moist heat and subject to hydrolytic degradation under certain circumstances. Polyester offers good resistance to most mineral and organic acids except high concentration of nitric, sulfuric, and carbolic acids. It has good resistance to weak alkalis and moderate resistance to strong alkalis at low temperatures. Not recommended for high concentrations of strong alkalis at high temperatures. Polyester also has good resistance to most oxidizing agents and is excellent for most organic solvents. It is not recommended for some phenolic compounds. ![fabric guide thumbnail](https://www.slyinc.com/wp-content/uploads/2024/12/fabric-guide-thumbnail.jpg "fabric-guide-thumbnail | Sly Air Pollution Control") Download our **Fabric Filter Properties Guide** to compare fabric characteristics to choose the best for your application. [Download](https://www.slyinc.com/wp-content/uploads/2024/12/Properties-of-Filtration-Fabrics-12-24.pdf) ![chemical](https://www.slyinc.com/wp-content/uploads/2024/12/chemical-thumbnail.jpg "chemical-thumbnail | Sly Air Pollution Control") Download our **Chemical Compatibility Guide** to compare fabric choice suitability for different chemicals. [Download](https://www.slyinc.com/wp-content/uploads/2024/12/Chemical-Compatibility-Fabric-Guide-1224.pdf) POLYESTER OPTIONS --- **Available Finishes for Polyester:** - Plain (PL), Fire Retardant (FR), PTFE membrane (XP) - Singed (SI), SlyHE (High efficiency), Glazed (GL) - ST-01 (Oleophobic), ST-04 (Code 9), SlyCharge (EX) - ST-08 (double dip ST-01), ST-09, ST-10, ST-11, ST-12 (SS fibers) **Available Weights for Polyester:** - 16 oz./yd2 - 18 oz./yd2 [Types of Finishes](https://www.slyinc.com/products/dry-dust-collector-filter-bags/filter-bag-finishes/) ### Polyester Felt Popular Finishes **Singed Polyester** (SIPE) – The felt is singed on the dust cake side for improved cake release. The most common type of filter media used in modern baghouses. The process involves exposing the surface fibers to an open flame that melts back the loose fiber ends to which dust particles could adhere. **Glazed Polyester** (GLPE) – This process involves running the felt through two heated rollers to melt back the loose fiber ends improving the cake release. The process can also compress the felt to smooth the surface, further improving the dust cake release. **SlyTech-01** (ST-01) – Oleophobic -water and oil repellent finish. SlyTech-01 is a complete PTFE bath that provides an excellent cake release finish to each fiber. This finish is cheaper and more durable than a membrane that can be easily scratched. [Click here](https://www.slyinc.com/wp-content/uploads/2024/09/ST-01.pdf) for more information on ST-01. ### Specialty Polyester Felts [**Duo-Density Polyester (SlyMax)**](https://www.slyinc.com/products/dry-dust-collector-filter-bags/slymax/) – To different size deniers, a finer denier on the surface or collection side and larger-sized fibers on the inside. In a true duo-density felt, the two different sized deniers are separated by a scrim in the middle that provides support and improves filtration. This felt offers better collection efficiency than single denier polyester felts. - **Available Finishes for Duo-Density Polyester:** Singed (SI): See detailed information on finishes [here](https://www.slyinc.com/products/dry-dust-collector-filter-bags/filter-bag-finishes/). - **Available Weights for Duo-Density Polyester:** 16 oz./yd2, 18 oz./yd2 - [Click here for more information](https://www.slyinc.com/products/dry-dust-collector-filter-bags/slymax/) SlyHE Sly High-Efficiency Felt (micro pore sized fibers) designed for fine pollutants. Microfibers are a great solution to fine, uniform, free-flowing dust and fine solids in liquid process slurries. Because fiber surface area and separation efficiency are directly related, SlyHE concept felts - **Available Finishes for SlyHE Polyester:** Plain (PL); Singed (SI); Glazed (GL); ST-01 (Oleophobic); ST-04 (Code 9); PTFE membrane (XP); ST-08 (double dip ST-01); ST-09 ; ST-10; ST-11; Fire Retardant (FR); SlyCharge (EX); ST-12 (SS fibers); Epitropic (EP); SlyHE (High efficiency). See detail information on finishes [here](https://www.slyinc.com/products/dry-dust-collector-filter-bags/filter-bag-finishes/). - **Available Weights for SlyHE Polyester:** 16 oz./yd2, 18 oz./yd2 - [SlyHE Media Spec sheet](https://www.slyinc.com/wp-content/uploads/2024/09/HE.pdf) The information provided on this website is intended as a guide for filter bag applications. SLY, LLC. makes no guarantee about the performance or results you can expect from the application of this information unless provided in writing from our staff. Need Help Selecting Filter Media? [Ask The Experts](/contact) --- ### [Request a Quote](https://www.slyinc.com/contact/request-a-quote/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/10/quote-air-pollution-control-system.jpg "quote-air-pollution-control-system | Sly Air Pollution Control") # Request a Quote **Dust Control, Bulk Loading Spouts & Material Handling Systems.** --- ### [Terms And Conditions](https://www.slyinc.com/terms-and-conditions/) **Published:** August 2, 2024 **Author:** p1ws **Content:** # Terms and Conditions --- ### [Privacy Policy](https://www.slyinc.com/privacy-policy/) **Published:** June 21, 2024 **Author:** p1ws **Content:** # Privacy Policy --- ### [Cookie Policy](https://www.slyinc.com/cookie-policy/) **Published:** August 2, 2024 **Author:** p1ws **Content:** # Cookie Policy --- ### [Cart](https://www.slyinc.com/cart/) **Published:** July 9, 2024 **Author:** p1ws **Content:** # Cart --- ### [Blog](https://www.slyinc.com/blog/) **Published:** July 26, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/10/Sly-web-blog.jpg "Sly-web-blog | Sly Air Pollution Control") # Blog **Stay up to date on the latest from Sly.** ###### Filter Blog Categories Categories Select Category Air Filter  (3) Bag Filter Cleaning  (7) Baghouse  (14) Baghouse Screw Conveyors  (1) Baghouse System  (5) Biomass  (4) Blog  (4) Cartridge Filters  (2) Cement Dust  (1) Dry Dust Collector  (6) Dry Filter Systems  (1) Dust Collection Equipment  (14) Dust Collection Replacement Parts  (2) Dust Collection System  (30) Dust Collector  (25) Dust Collector Fire  (1) Dust Collector Inspection  (4) Dust Collector Maintenance  (9) Dust Collector Repair  (3) Dust Collector Replacement Bags  (4) Dust Collector System  (7) Dust Collectors  (4) Dust Filters  (4) Explosive Dust  (3) fabric filters  (2) Filter cleaning  (4) Fly Ash  (2) Fly Ash Dust Control  (2) FRP Scrubbers  (5) impingement  (1) industrial applications  (7) Industrial Dust Collector  (11) interstitial velocity  (1) Lithium  (4) OSHA Compliance  (1) Polyester Felt  (1) Polyester Felt Filter  (1) Venturi  (8) Wet Scrubber  (31) [![chemical processing](https://www.slyinc.com/wp-content/uploads/2024/09/wet-scrubbers-chemical-processing.jpg "wet-scrubbers-chemical-processing | Sly Air Pollution Control") ](https://www.slyinc.com/blog/the-complete-guide-to-safest-dust-collection-for-sticky-chemical-dust/) ### [The Complete Guide to Safest Dust Collection for Sticky Chemical Dust](https://www.slyinc.com/blog/the-complete-guide-to-safest-dust-collection-for-sticky-chemical-dust/) September 14, 2026 Discover what is the safest dust collection for sticky chemical dust with wet scrubbers and specialized dry systems that prevent blinding and explosion risks. [Read More](https://www.slyinc.com/blog/the-complete-guide-to-safest-dust-collection-for-sticky-chemical-dust/) [![dust control](https://www.slyinc.com/wp-content/uploads/2024/06/industries-dust-control.jpg "industries-dust-control | Sly Air Pollution Control") ](https://www.slyinc.com/blog/top-7-causes-of-poor-industrial-dust-control/) ### [Impacts of Poor Industrial Dust Control](https://www.slyinc.com/blog/top-7-causes-of-poor-industrial-dust-control/) September 7, 2026 Discover the Top 7 Causes of Poor Industrial Dust Control and how to fix them for safer, compliant facilities. [Read More](https://www.slyinc.com/blog/top-7-causes-of-poor-industrial-dust-control/) [![wet scrubber food processing](https://www.slyinc.com/wp-content/uploads/2025/01/wet-scrubber-food-processing-dust.jpg "wet-scrubber-food-processing-dust | Sly Air Pollution Control") ](https://www.slyinc.com/blog/how-wet-scrubber-systems-remove-corrosive-fumes/) ### [How Wet Scrubber Systems Remove Corrosive Fumes](https://www.slyinc.com/blog/how-wet-scrubber-systems-remove-corrosive-fumes/) August 31, 2026 Learn how wet scrubber systems remove corrosive fumes by absorbing and neutralizing HCl, HF, and SO2 gases for safer, compliant operations. [Read More](https://www.slyinc.com/blog/how-wet-scrubber-systems-remove-corrosive-fumes/) [![Rare Earth & Critical Mineral Dust Control](https://www.slyinc.com/wp-content/uploads/2026/07/27839ba7354b77384fb55174ae7158b5c259e7b6.jpg "Mining for Solutions Effective Dust Control in Critical Mineral Operations | Sly Air Pollution Control") ](https://www.slyinc.com/blog/keep-it-clean-essential-strategies-for-rare-earth-and-critical-mineral-dust-control/) ### [Mining for Solutions: Effective Dust Control in Critical Mineral Operations](https://www.slyinc.com/blog/keep-it-clean-essential-strategies-for-rare-earth-and-critical-mineral-dust-control/) July 27, 2026 Master Rare Earth & Critical Mineral Dust Control for safety & efficiency. Learn expert strategies, tech & compliance. [Read More](https://www.slyinc.com/blog/keep-it-clean-essential-strategies-for-rare-earth-and-critical-mineral-dust-control/) [![lithium dust collection](https://www.slyinc.com/wp-content/uploads/2026/07/cropentropycstinysrgbfitmaxfmjpgixidM3w2MTMxNjF8MHwxfHNlYXJjaHwxMHx8bGl0aGl1bSUyMGJhdHRlcnklMjBtYW51ZmFjdHVyaW5nJTIwZmFjaWxpdHl8ZW58MHwwfHx8MTc2NDc5MTIzMnwwixlibrb-410q80w1080.jpg "Dont Get Dusted How to Master Lithium Dust Collection for Safety and Efficiency | Sly Air Pollution Control") ](https://www.slyinc.com/blog/dont-get-dusted-how-to-master-lithium-dust-collection-for-safety-and-efficiency/) ### [Don’t Get Dusted: How to Master Lithium Dust Collection for Safety and Efficiency](https://www.slyinc.com/blog/dont-get-dusted-how-to-master-lithium-dust-collection-for-safety-and-efficiency/) July 20, 2026 Protect your plant from hazardous lithium dust. Master lithium dust collection for safety, efficiency, and resource recovery. [Read More](https://www.slyinc.com/blog/dont-get-dusted-how-to-master-lithium-dust-collection-for-safety-and-efficiency/) [![baghouse filter replacement](https://www.slyinc.com/wp-content/uploads/2026/07/0794141374d143f79af340b88139e149.jpg "How to Replace Your Baghouse Filters for Optimal Performance | Sly Air Pollution Control") ](https://www.slyinc.com/blog/how-to-replace-your-baghouse-filters-for-optimal-performance/) ### [How to Replace Your Baghouse Filters for Optimal Performance](https://www.slyinc.com/blog/how-to-replace-your-baghouse-filters-for-optimal-performance/) July 10, 2026 Learn baghouse filter replacement: signs, media selection, step-by-step guide, safety & maintenance for optimal performance. [Read More](https://www.slyinc.com/blog/how-to-replace-your-baghouse-filters-for-optimal-performance/) [![baghouse maintenance checklist](https://www.slyinc.com/wp-content/uploads/2026/04/fabc5df9cdce1e9c8e23886100730dccfd844e10.jpg "The Ultimate Baghouse Maintenance Checklist Keep Your System Running Smoothly | Sly Air Pollution Control") ](https://www.slyinc.com/blog/baghouse-maintenance-checklist-guide/) ### [The Complete Baghouse Maintenance Guide & Checklist](https://www.slyinc.com/blog/baghouse-maintenance-checklist-guide/) April 10, 2026 Unlock baghouse bliss! Use our comprehensive baghouse maintenance checklist for peak performance, safety & compliance. [Read More](https://www.slyinc.com/blog/baghouse-maintenance-checklist-guide/) [![chemical processing](https://www.slyinc.com/wp-content/uploads/2024/09/wet-scrubbers-chemical-processing.jpg "wet-scrubbers-chemical-processing | Sly Air Pollution Control") ](https://www.slyinc.com/blog/dont-get-gassed-the-ultimate-guide-to-acid-gas-management/) ### [Acid Gas Control: Unpacking the Best Treatment and Removal Strategies](https://www.slyinc.com/blog/dont-get-gassed-the-ultimate-guide-to-acid-gas-management/) March 4, 2026 Why Acid Gas Control Matters for Your Facility Acid gas control is the process of removing harmful acidic compounds—like sulfur dioxide (SO2), hydrogen chloride (HCl), hydrogen sulfide (H2S), and hydrogen fluoride (HF)—from industrial exhaust streams before they reach the atmosphere. [Read More](https://www.slyinc.com/blog/dont-get-gassed-the-ultimate-guide-to-acid-gas-management/) [![Industrial photography Crushed stone conveyor for dump trucks in a quarry](https://www.slyinc.com/wp-content/uploads/2026/02/AdobeStock_326665018-scaled.jpeg "Industrial photography Crushed stone conveyor for dump trucks in a quarry | Sly Air Pollution Control") ](https://www.slyinc.com/blog/frac-sand-processing-what-you-need-to-know-about-facilities-and-operations/) ### [Frac Sand Processing: What You Need to Know About Facilities and Operations](https://www.slyinc.com/blog/frac-sand-processing-what-you-need-to-know-about-facilities-and-operations/) February 25, 2026 The Fundamentals of Frac Sand Production Frac sand processing transforms raw silica sand deposits into specialized proppants that keep underground fractures open during hydraulic fracturing operations. [Read More](https://www.slyinc.com/blog/frac-sand-processing-what-you-need-to-know-about-facilities-and-operations/) 1[2](https://www.slyinc.com/wp-cron.php/page/2/?doing_wp_cron=1793315778.2171208858489990234375)[3](https://www.slyinc.com/wp-cron.php/page/3/?doing_wp_cron=1793315778.2171208858489990234375)[4](https://www.slyinc.com/wp-cron.php/page/4/?doing_wp_cron=1793315778.2171208858489990234375)[5](https://www.slyinc.com/wp-cron.php/page/5/?doing_wp_cron=1793315778.2171208858489990234375)…[7](https://www.slyinc.com/wp-cron.php/page/7/?doing_wp_cron=1793315778.2171208858489990234375)[8](https://www.slyinc.com/wp-cron.php/page/8/?doing_wp_cron=1793315778.2171208858489990234375)[9](https://www.slyinc.com/wp-cron.php/page/9/?doing_wp_cron=1793315778.2171208858489990234375)[10](https://www.slyinc.com/wp-cron.php/page/10/?doing_wp_cron=1793315778.2171208858489990234375)[Next »](https://www.slyinc.com/wp-cron.php/page/2/?doing_wp_cron=1793315778.2171208858489990234375) --- ### [Food Processing](https://www.slyinc.com/industries/food-processing/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/10/grain-dust-control.jpg "grain-dust-control | Sly Air Pollution Control") # Food Processing **Customized Dust Collection or Other Mitigation Solutions are Crucial for Food Processing Facilities**. ## Dust Collection & Removal of Other Constituents for the Food Processing Industry --- Dust collection in the food processing industry can be critical for maintaining product quality, ensuring worker safety, and complying with regulatory standards. The food processing industry is a broad category encompassing a wide range of activities, from the initial handling, preparation, and storage of raw ingredients to complex manufacturing processes, final food preparation, and packaging. Various types of dust are produced in this domain, such as grain and flour dust, corn starch, powdered starches, nuts and legumes residue, dehydrated milk, egg products, sugar, cocoa, spices, flavors, additives, etc. In addition, the exhaust gases from the manufacturing process food preparation equipment can produce odors, particulate matter in the form of aerosol (i.e., liquid droplets, oil droplets, etc.), and/or other constituents such as VOCs. In these cases, a wet scrubber may be needed. ### Wet Scrubbers for Food Processing ![](https://www.slyinc.com/wp-content/uploads/2025/01/STJ-1111-54-SB-baghouse.jpg) STJ Dry Dust Collectors ![](https://www.slyinc.com/wp-content/uploads/2025/01/ImpinJet-Scrubber-Food-Processing.jpg) Impinjet® Wet Scrubbers ![](https://www.slyinc.com/wp-content/uploads/2025/01/Sly-material-handling-load-spout.jpg) Bulk Solids Loading Spouts ![](https://www.slyinc.com/wp-content/uploads/2024/07/Air-Pollution-Control-Gradient.png "Air-Pollution-Control-Gradient | Sly Air Pollution Control") --- Sly offers a complete line of dust collection equipment, including bag houses and media selection for the filters, wet scrubbers, cyclones, and loading spouts. Our technicians can draw upon industry knowledge gathered during our 150-year history to engineer the best solution for your needs. Ensure your food processing environment is safe with a proven solution. [Contact Sly](/contact) ### How Dust Collectors & Wet Scrubbers are used #### Dust Collectors [Dust collectors](https://www.slyinc.com/dust-collectors/) are used to remove particulate matter (dust, powders, and other airborne particles) generated for a variety of food processing applications: Applications --- Ingredient Handling During the handling, mixing, and grinding of dry ingredients like flour, sugar, spices, and grains, a significant amount of dust is produced. Dust collectors capture this dust to prevent contaminating the workspace and products. Packaging The packaging of powdered or granular food products can generate dust. Dust collectors help maintain a clean environment and ensure the packaging area complies with hygiene standards. Processing Areas Areas, where food products are chopped, blended, or otherwise processed, can create dust. Dust collectors prevent dust accumulation on equipment and surfaces, reducing the risk of cross-contamination. - **Baghouse Collectors:** Use fabric filter bags to capture dust particles. They are suitable for handling large volumes of dust. - **Cartridge Collectors:** Use pleated filter cartridges, which provide a large surface area for dust collection and are efficient in smaller spaces. - **Cyclone Collectors:** Utilize centrifugal force to separate dust particles from the air. They are often used as pre-filters for more fine-tuned dust collection systems. #### Wet Scrubbers Wet scrubbers capture fine particulates, gases, and vapors by passing contaminated air through a scrubbing liquid, typically water or a chemical solution. Applications --- Odor Control In processes that generate strong odors (e.g., meat processing, fish handling), wet scrubbers can remove or neutralize these odors, improving air quality. Dust Suppression In areas where dust particles are very fine or where dry dust collection might pose a risk (such as explosive dust), wet scrubbers can efficiently capture these particles. - **Venturi Scrubbers:** Use a high-velocity water jet to atomize the scrubbing liquid and capture fine particulates and gases. They are effective for high-dust-load applications. - **Packed Bed Scrubbers:** Contain a packed bed of material that provides a large surface area for the scrubbing liquid to contact the contaminated air. These are often used for gas absorption and odor control. - **Impinjet Wet Scrubbers:** Sly Impinjet® Wet Gas Scrubbers collect particulates and absorb vapors and gases. The gas passes up through the openings in the perforated plates (trays) holding a liquid bed. The secret is in the scrubber’s design, which uses an impingement baffle above each hole. Sly is [your partner](https://www.slyinc.com/contact/) in complying with OSHA and NFPA regulations for managing combustible dust. We establish dust control measures to reduce the likelihood of a combustible dust explosion in food processing environments. Our seasoned air quality engineers guide you through every step, from initial assessment to system design, installation, filter selection, HVAC integration, and ongoing maintenance. Effective dust control in food processing is paramount for food safety and worker well-being. Unchecked food dust can lead to sanitation problems, cross-contamination, microbial hazards, employee health risks, slip-and-fall accidents, and even a fire or explosion. Compliance with strict food safety regulations by the FDA and USDA and occupational safety standards by OSHA. Compliance with NFPA is also needed to meet fire and safety requirements. In the U.S., there are thousands of food processing facilities, ranging from small bakeries to large plants with substantial workforces, each with unique dust control needs. Customized dust and/or constituent removal strategies utilizing dry or wet dust collection, tailored to specific dust types, contaminants, processes, and facility settings, are essential for addressing the diverse hazards and operational environments in food processing. Collaborating with an engineering partner capable of designing a comprehensive solution incorporating ventilation, containment, and collection systems is key for ensuring a safe and compliant work environment. ![](https://www.slyinc.com/wp-content/uploads/2024/11/food-bakery-process-dust.jpg "food-bakery-process-dust | Sly Air Pollution Control") ### Dust Collection Challenges Dust collection in the food processing sector presents several unique challenges, including a variety of dust types, combustibility and explosion risk, hygiene and sanitation requirements, cross-contamination prevention, moisture and humidity, and regulatory compliance. The specific risks and challenges vary based on the ingredients and methods employed. Although the dust generated by the food industry is generally non-toxic since these products are meant for consumption, the significance of dust control or other mitigation should be considered. #### Protective Measures for Dust Collection in Food Processing: Safeguarding Health and Preventing Explosions [Dust collection equipment](https://www.slyinc.com/products/) plays a crucial role in the food processing industry by managing various types of dust, including grain flours, powdered milk, starches, sugar, cocoa powder, and spices. These substances, known for their combustible nature, require careful design considerations to prevent potential explosions. Solutions may include venting, suppression, flameless venting, and isolation. ![food bits](https://www.slyinc.com/wp-content/uploads/2024/11/food-1-edited-1-1024x1024.png "food-1-edited-1 | Sly Air Pollution Control") Regarding health risks, while staple ingredients like grains and potatoes pose minimal hazards, certain additives and spices used in food processing can be harmful upon prolonged inhalation exposure. For instance, diacetyl, a common butter-flavoring component, is linked to lung disease. Moreover, chemical additives and flavorings can lead to lung irritation, mucus membrane issues, and skin problems. Cinnamon, containing volatile oils, is a prime example. It triggers asthma and skin and eye irritation, necessitating special handling precautions during processing to safeguard workers’ well-being. These systems ensure operational safety, workers’ health, and property protection by implementing explosion protection and addressing health risks associated with specific ingredients and additives. #### Dust Control Solutions for Your Food Processing Operation Customized dust collection or other mitigation solutions are crucial for food processing facilities, as there’s no one-size-fits-all approach. Our expert engineers assess your operations to recommend the perfect dust collector, filter media, and/or wet scrubber. ### Case Studies & White Papers ###### Featured Resources [![](https://www.slyinc.com/wp-content/uploads/2024/08/baghouse-1.jpg "baghouse | Sly Air Pollution Control")](https://www.slyinc.com/blog/wet-vs-dry-systems-which-is-best-for-your-air-pollution-control-challenge/) #### Wet vs. Dry Systems: Which Is Best for Your Air Pollution Control Challenge? Air pollution control systems fall into two main categories: wet scrubbers and dry dust collectors (including both baghouses and cartridge collectors). Each type has its place, but determining which is best for a particular application does require careful consideration. [Read More](https://www.slyinc.com/blog/wet-vs-dry-systems-which-is-best-for-your-air-pollution-control-challenge/) --- ### [About](https://www.slyinc.com/about/) **Published:** July 2, 2024 **Author:** Mike Eaton **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/07/About-Sly.jpg "About-Sly | Sly Air Pollution Control") # ABOUT SLY **A Dry Dust Collector & Wet Scrubber Manufacturer**. ## The Expertise You Need. The Service You Deserve. --- ![](https://www.slyinc.com/wp-content/uploads/2024/06/sly-150-centered.png "sly-150-centered | Sly Air Pollution Control") Celebrating 150 years of expertise, no other company provides a better customer experience than Sly. From [troubleshooting your current dust collection equipment](https://www.slyinc.com/blog/troubleshooting-common-dust-collector-problems/) to customizing an [industrial dust collector](https://www.slyinc.com/products/dust-collectors/) or [wet scrubber system](https://www.slyinc.com/products/industrial-wet-scrubbers/) to meet your exact needs, Sly is committed to total customer support and service. ### Air Pollution Control Systems Because we make our dust collectors and scrubbers in our own filtration manufacturing facility, it is easy for Sly to accommodate your special needs. When it comes to air pollution control problems for the widest variety of industries, we have you covered. ![](https://www.slyinc.com/wp-content/uploads/2024/10/Air-Pollution-Control-Gradient-Text.png "Air-Pollution-Control-Gradient-Text | Sly Air Pollution Control") ### When it comes to air pollution control problems, don’t compromise. Contact Sly for: - Experience in most every dust collection application - Multiple solutions for interstitial velocity problems on light dusts - Detailed proposals and engineering drawings - 3D models, custom design and fabrication - Special support structures - Combustible dust designs and explosion protection - Full factory insulation - Alloy steel and other special finishes - In house painting and/or special paints - Superior welding and workmanship - Wet scrubbers with low water recirculation requirements / low pressure drop - Reliable deliveries - Personalized customer service and problem solving [Contact Sly](https://www.slyinc.com/contact/) #### About Sly --- --- ### [Filter Bag Finishes](https://www.slyinc.com/products/dry-dust-collector-filter-bags/filter-bag-finishes/) **Published:** September 11, 2024 **Author:** p1ws **Content:** ![filter-bags-dust-collectors](https://www.slyinc.com/wp-content/uploads/2024/11/filter-bags-dust-collectors.jpg "filter-bags-dust-collectors | Sly Air Pollution Control") # Filter Bag Finishes **Providing the Best Possible Filter Media Choice**. ## Types of Finishes for Fabric Media --- Sly’s finish treatments can greatly improve your filter bag life, cake release, resistance to abrasion, static dissipation, and protection from harsh application conditions. Our fabric treatments combined with various media of different types and weights can provide the best possible filter media choice for your demanding application. How a fabric filter media is finished depends upon the desired physical specifications, surface finish, and application requirements. **Plain:** (PL) No finish added **Singed** (SI) This process involves exposing the surface fibers to an open flame to melt back the loose fiber ends to which dust particles could adhere. The singing improves dust cake release and adds very little cost to the product. This is the most popular type of finish used today. **Glazed** (GL) Known as calendaring, this process involves putting the felt through two heated rollers that melt back the loose surface fibers and can also compress the felt to smooth the surface and improve dust cake release. **PTFE membrane / Pristyne® PTFE / Tetratex PTFE:** A thin laminate of Teflon® is thermally bonded to the outside of the filter bag. PTFE membrane is used to greatly improve both the filtration efficiency and the cake release ability of the filter bag. The membrane is relatively expensive, extremely fragile and care must be taken when handling and installing this type of filter bag. The PTFE membrane can be added to most types of fabric filter media and offers the optimum filtration efficiency. **Fire Retardant:** (FR) Chemical sprayed on surface treatment designed to reduce the probability of a spark igniting the filter media that has been treated. The treatment does not “fire proof” the filter media, but offers a modest level of protection against an occasional spark. **Acid Resistant:** (AR) Sprayed on treatment improving media fabrics ability to resist acid attacks. **SlyCharge** (EX) A stainless steel grid patterned scrim is manufactured inside the felted fibers of the media. Anti-static design exceeds standards for static dissipation media below 10⁶ resistivity. Due to the unique design and proprietary needling technology used by our media supplier, the potential for product contamination is eliminated. SlyCharge has been accepted by major U.S. users within the food, power generation, and plastics processing markets. The static conductivity capability is durable and works like new, even when covered with dust. - SlyCharge is available in a variety of felt designs and finishes such as ST-01, SlyHE (high efficiency), and ST-04 (Code 9). - Some successful applications of SlyCharge (EX) include: calcium fluoride & silica, aromatic hydrocarbon resin, silica dioxide (fumed silica), paper, and barite w/polypropylene glycol coating. **SlyTech-01** (ST-01) is An Oleophobic dust-release fluorocarbon resin treatment engineered to efficiently separate and release wet, oily, fatty, sticky, and agglomerate dust. Because the base felt is totally submerged in the chemical bath during the manufacturing process, each fiber is encapsulated with the treatment providing excellent dust release from both the surface, as well as the depth of the filter media. SlyTech-01 is also good for non-continuous processes, where the temperature may drop near to the dew point. The ST-01 finish helps prevent the uptake of moisture by the needle felt, thus reducing the danger of excessive dust deposits and caking. - Advantages of ST-01: Superior release of difficult dusts; reduced blinding and clogging; higher flow rates; longer bag life; lower pressure drop - Available medias: Polypropylene, Polyester, Homopolymer Acrylic, Aramid, PPS (Ryton®), P-84 (Polyimide) felts. For high-temperature felts, see SlyTech-03 (ST-03). - Some of the many successful applications include prill, poultry manure, granulation, sugar, synthetic silica gel, single super phosphate (Fertilizer), and many more. - FDA-approved version available (SlyTech-02) for food processing industries. ST-02 can effectively release dust cakes with natural fats and oils, including cheese whey, powdered milk, yeast, starch, flour, sugar, and egg. - [Information sheet](https://www.slyinc.com/wp-content/uploads/2024/12/Sly-Tech-01.pdf) **SlyTech-03** (ST-03) PTFE surface treatment is a solution for cake release problems associated with high-temperature felts. ST-03 provides a high degree of surface separation with excellent cake release. PTFE resin is thermally bonded to the cake side fibers to form a smooth, high-temperature, chemically stable surface. By promoting surface cake formation, the ST-03 treatment prevents clogging and blinding of the felt media and extends filter bag life. - Advantages of ST-03: Promotes surface cake formation; facilitates dust cake release; higher flow rates; longer bag life; lower pressure drop; high separation rates - Available medias: ST-03 is normally applied to the four major high-temperature fibers. These are Aramid, P-84® (Polyimide), PPS (Ryton®), and PTFE. Pure PTFE resin is used as the base for ST-03 in order to resist high temperatures and withstand aggressive chemistry. **SlyTech-04** (ST-04) Commonly known as Code 9, this finish is a non-stick cake release treatment that provides resistance to abrasive dusts. **SlyTech-05** (ST-05) Teflon finish for high-temperature applications when using woven fiberglass fabric. It works well for difficult corrosive gases because of its very good chemical resistance and its ability to resist clogging while enhancing bag life. **SlyTech-08** (ST-08) An extra heavy coating of ST-01 (Oleophobic) for tough, agglomerating dust. **SlyTech-09/SlyTech-10** (ST-09/ST-10) Spark-resisting surface treatment for polyester felt. ST-10 adds a bath treatment of ST-01 (Oleophobic /see above) for additional repellency and cake release. **SlyTech-11** (ST-11) Reduces the adverse effects of hydrolysis on aramid. SlyTech-11 is highly effective when used with PTFE scrim support. **SlyTech-12** (ST-12) Stainless steel fibers are added to the base felt fibers before the media is manufactured to conduct static electricity (Anti-Static). Often used in conjunction with a ground wire to dissipate static accumulation on the filter to the tube sheet of a grounded baghouse. **SlyTech-15** (ST-15) Powdered polymer surface repellency coating designed for sticky and/or oily fibrous dust. This treatment is the optimum surface release available for fibrous dust. **SlyTech-16** (ST-16) Provides a silicon treatment to the surface of the filter bag. Often called “siliconizing” or “eggshell” finish (similar to glazing), this is a heat treatment designed to provide a smoother bag surface to assist in cake release for sticky and difficult-to-remove materials. **SlyTech-17** (ST-17) Acrylic-foam treatment is applied to the surface of the media. The foam is spread on the surface and cured to provide a smoother and licker surface for sticky dust release. It also provides sealing of pores in the bag to create a slightly better efficiency for fine dust collection. Acrylic foam treatments are rarely used in today’s applications since PTFE membrane technology has come down significantly in pricing and provides much better overall efficiency and dust release performance. The information provided on this website is intended as a guide for filter bag applications. SLY, LLC. makes no guarantee about the performance or results you can expect from the application of this information unless provided in writing from our staff. Need Help Selecting Filter Media? [Ask The Experts](/contact) --- ### [News](https://www.slyinc.com/about/news-events/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/09/news-hero.jpg "news-hero | Sly Air Pollution Control") # News **What’s Happening at SLY.** - [![Logo for The Battery Show North America with 'CPEG & SLY booth 4719'](https://www.slyinc.com/wp-content/uploads/2026/08/Battery-Show-2026-CPEG-Sly.jpg "Battery-Show-2026-CPEG-Sly | Sly Air Pollution Control")](https://www.slyinc.com/blog/news-events/battery-show-2026/) ## [Battery Show 2026](https://www.slyinc.com/blog/news-events/battery-show-2026/) Meet with a CPEG representative to discuss your air pollution control requirements at the Battery Show, October 12-15, 2026 at… [**Read More**](https://www.slyinc.com/blog/news-events/battery-show-2026/) - [![](https://www.slyinc.com/wp-content/uploads/2026/03/Lithium-Supply-Battery-Raw-Materials_web.jpg "Lithium-Supply--Battery-Raw-Materials_web | Sly Air Pollution Control")](https://www.slyinc.com/blog/news-events/lithium-supply-conf/) ## [Lithium Supply & Battery Raw Materials 2026](https://www.slyinc.com/blog/news-events/lithium-supply-conf/) June 22-25, 2026 • Red Rock Casino Resort & Spa, Las Vegas, NV [**Read More**](https://www.slyinc.com/blog/news-events/lithium-supply-conf/) - [![](https://www.slyinc.com/wp-content/uploads/2025/12/WOCA-black-backgroundd.jpg "WOCA black backgroundd | Sly Air Pollution Control")](https://www.slyinc.com/blog/news-events/sme-minexchange-2/) ## [World of Coal Ash 2026](https://www.slyinc.com/blog/news-events/sme-minexchange-2/) May 4-7, 2026 • Central Bank Center, Lexington, KY [**Read More**](https://www.slyinc.com/blog/news-events/sme-minexchange-2/) - [![](https://www.slyinc.com/wp-content/uploads/2025/12/SME_web.jpg "SME_web | Sly Air Pollution Control")](https://www.slyinc.com/blog/news-events/sme-minexchange/) ## [SME MinexChange](https://www.slyinc.com/blog/news-events/sme-minexchange/) February 22-25, 2026 • Salt Palace Convention Center, Salt Lake City, UT [**Read More**](https://www.slyinc.com/blog/news-events/sme-minexchange/) - [![](https://www.slyinc.com/wp-content/uploads/2024/08/sly-celebrating-150years.png "sly-celebrating-150years | Sly Air Pollution Control")](https://www.slyinc.com/blog/news-events/a-150-year-legacy-forged-through-persistence-innovation-and-collaboration/) ## [A 150-Year Legacy Forged Through Persistence, Innovation and Collaboration](https://www.slyinc.com/blog/news-events/a-150-year-legacy-forged-through-persistence-innovation-and-collaboration/) The world would be a dustier and more dangerous place without the knowledge base, skills, experience and innovative solutions that… [**Read More**](https://www.slyinc.com/blog/news-events/a-150-year-legacy-forged-through-persistence-innovation-and-collaboration/) --- ### [Products](https://www.slyinc.com/products/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![wet scrubber baghouse dust collection](https://www.slyinc.com/wp-content/uploads/2024/11/wet-scrubber-baghouse-dust-collection.jpg "wet-scrubber-baghouse-dust-collection | Sly Air Pollution Control") # Products **Rely on Sly for Industrial Air Pollution Control.** Leading companies across major industries count on our industrial dust collection systems, wet scrubbers, and[ analysis services](https://www.slyinc.com/services/) to solve unique challenges and meet the most rigid specifications for retrofits and new installations. You’ll find our solutions worldwide in biomass, Li-Ion battery, plastics, chemicals, rubber, rail, mineral, and cement production facilities. ## Our Products --- ### [Dust Collectors](https://www.slyinc.com/products/dust-collectors/) [![](https://www.slyinc.com/wp-content/uploads/2024/06/dry-dust-collector.jpg "dry-dust-collector | Sly Air Pollution Control")](https://www.slyinc.com/products/dust-collectors/) TubeJet® Pulse-Cleaned (SBR, STJ, CBR, CTR) Vertical Cartridge Filter (VCF), Reverse Air (RAC), and Cyclone Industrial Dust Collectors. ### [Wet Scrubbers](https://www.slyinc.com/products/industrial-wet-scrubbers/) [![](https://www.slyinc.com/wp-content/uploads/2024/06/wet-scrubber.jpg "wet-scrubber | Sly Air Pollution Control")](https://www.slyinc.com/products/industrial-wet-scrubbers/) Impinjet®, Venturi, Eductor, Fiberglass Reinforced Plastic (FRP), and Packed Tower Wet Scrubbers. ### [Loading Spouts](https://www.slyinc.com/products/industrial-bulk-solids-loading-spouts/) [![](https://www.slyinc.com/wp-content/uploads/2024/10/bulk-loading-spout.jpg "bulk-loading-spout | Sly Air Pollution Control")](https://www.slyinc.com/products/industrial-bulk-solids-loading-spouts/) Loading and stacking spouts in several configurations for handling the widest variety of dry bulk materials with minimal dust. ### [Replacement Parts](https://www.slyinc.com/products/replacement-parts/) [![](https://www.slyinc.com/wp-content/uploads/2024/10/SLy-genuine-replacement-parts.jpg "SLy-genuine-replacement-parts | Sly Air Pollution Control")](https://www.slyinc.com/products/replacement-parts/) Replacement bags, parts, and filters in a variety of sizes and media for most dust collection manufacturer’s equipment. ### [Custom Sheet Metal Fabrication](https://www.slyinc.com/products/custom-sheet-metal-fabrication/) [![](https://www.slyinc.com/wp-content/uploads/2024/10/sheet-metal-fabricated-parts.jpg "sheet-metal-fabricated-parts | Sly Air Pollution Control")](https://www.slyinc.com/products/custom-sheet-metal-fabrication/) Sly provides custom sheet metal and structural fabrication from 14 gauge to 3/8″ thick in carbon steel, abrasion resistant steel, stainless steel and other high alloy materials. ### [Dust Collector Filter Bags](https://www.slyinc.com/products/dry-dust-collector-filter-bags/) [![](https://www.slyinc.com/wp-content/uploads/2024/10/Filter-Bags-Fabric-Media.jpg "Filter-Bags-Fabric-Media | Sly Air Pollution Control")](https://www.slyinc.com/products/dry-dust-collector-filter-bags/) Woven Cotton, Polyester, High Efficiency Felts (SlyHE, MPS), Polypropylene, Nylon (Cerex®), Acrylic (Homopolymer Acrylic Felt) and High Temperature Filter Media including Aramid (Nomex®), Fiberglass, P84® (Polyimide), PPS (Polyphenylene Sulfide) and Teflon® (Fluorocarbon fiber). #### Durable Industrial Dust Collection Equipment. ##### For Every Industry. Our high-quality line of air pollution control products include baghouses, cyclones, dust collectors, wet scrubbers, and industrial loading spouts. Replacement component and custom fabricated parts are readily available to keep you up and running smoothly. Additional product offerings include custom sheet metal fabrication and a variety of filter media options to keep your company running cleanly and efficiently for years to come. At Sly, our team of experts assist you through the project from start to finish. Any industrial dust collection and air pollution control equipment manufacturer can give you clean air, but at SLY, that’s just the beginning. For over 150 years, our dust collection products have been used for a wide range of applications throughout various industries. We take pride in our reputable company history, comprised of experienced engineers and quality products. SLY even holds the very first patent ever issued for cloth-type dust collectors. Over the years, we have maintained flexibility in our engineering techniques and manufacturing abilities, allowing us to customize our dust collectors, sheet metal fabrication, and other products to meet the application specifications. ##### Complete Process Systems from One Single Source As a subsidiary of Carrier Process Equipment Group (CPEG), Sly can provide additional thermal and dry solids processing equipment to supplement and build out your production line. These machines can be integrated upstream into existing or new process lines. With a full spectrum of technologies, ancillary components, and automation solutions, customers worldwide rely on us to meet their unique production needs. Our team of experts can help determine the most suitable products for your manufacturing line. - Atmospheric Drum Dryers - Vacuum Drum Dryers - Vacuum Pan Dryers - Vacuum Rotary Dryers - Vacuum Shelf Dryers - Cooling Drum Flakers - Evaporation, Distillation & Separation - Tumble Dryers - Vibratory & Static Fluid Bed Dryers - Fluid Bed Coolers - Rotary Dryers - Flash, Tornesh, Media Slurry Dryers - Bulk Material Heat/Cool Exchangers - Vibratory Feeders - Vibratory & Screw Conveyors - Vibratory Screeners & Power Sifters - Rotary Calciners - Bin & Pile Dischargers - Loading Spouts - Mixers & Blenders - Size Reduction Equipment - Dry Dust Collectors - Wet Scrubbers - And More ![](https://www.showes.com/wp-content/uploads/2025/09/sly-CPEG-systems-integration-1920-new-1024x496.jpg "| Sly Air Pollution Control")[![](https://www.showes.com/wp-content/uploads/2025/09/PK_Blenders_Logo_Blk-1024x189.png "| Sly Air Pollution Control")](https://hubs.ly/Q03M52mP0)[![filter-bags-dust-collectors](https://www.showes.com/wp-content/uploads/2025/09/Carrier_Logo_24_Blk-1024x310.png "filter-bags-dust-collectors | Sly Air Pollution Control")](https://hubs.ly/Q03M53gZ0)[![](https://www.showes.com/wp-content/uploads/2025/09/Heyl_Patterson_Logo-Black-1024x246.png "| Sly Air Pollution Control")](https://hubs.ly/Q03M54TM0)[![](https://www.showes.com/wp-content/uploads/2025/09/Showes_Logo-Black-1024x194.png "| Sly Air Pollution Control")](https://hubs.ly/Q03M57Gs0)[![](https://www.showes.com/wp-content/uploads/2025/09/Buflovak_Blk_Logo-1024x178.png "| Sly Air Pollution Control")](https://hubs.ly/Q03M59lN0)[![](https://www.showes.com/wp-content/uploads/2025/09/Kinergy_Logo_Black-749x1024.png "| Sly Air Pollution Control")](https://hubs.ly/Q03M59CN0) ##### Integrate Additional Equipment from CPEG Into Your Production Line [Learn More](https://info.slyinc.com/complete-process-systems) [Download CPEG Brochure](https://info.slyinc.com/hubfs/CPEG-Capabilities-Brochure-03-25.pdf) --- ### [Sitemap](https://www.slyinc.com/sitemap/) **Published:** August 12, 2024 **Author:** p1ws **Content:** ![refinery-oil-aerial](https://www.slyinc.com/wp-content/uploads/2024/11/refinery-oil-aerial-109025-edited.jpg "refinery-oil-aerial-109025-edited | Sly Air Pollution Control") # SiteMap - [Home](https://www.slyinc.com/) - [Products](https://www.slyinc.com/products/) - [Dust Collectors](https://www.slyinc.com/products/dust-collectors/) - [Tubejet Baghouse Dust Collectors](https://www.slyinc.com/products/dust-collectors/tubejet-baghouse-dust-collectors/) - [CTR/CBR – Cylindrical Pulse Jet Collectors](https://www.slyinc.com/products/dust-collectors/tubejet-baghouse-dust-collectors/ctr-cbr-cylindrical-pulse-jet-collectors/) - [STJ/SBR – Square Series Pulse Jet Collectors](https://www.slyinc.com/products/dust-collectors/tubejet-baghouse-dust-collectors/stj-sbr-square-series-pulse-jet-collectors/) - [TubeJet Baghouse Dust Collectors Application Examples](https://www.slyinc.com/products/dust-collectors/tubejet-baghouse-dust-collectors/tubejet-baghouse-dust-collectors-application-examples/) - [Vertical Cartridge Filter Dust Collector](https://www.slyinc.com/products/dust-collectors/vertical-cartridge-filter-collectors/) - [Legacy Dust Collectors](https://www.slyinc.com/products/dust-collectors/legacy-dust-collectors/) - [Reverse Air Collectors](https://www.slyinc.com/products/dust-collectors/reverse-air-collectors/) - [Explosion Protection Expertise](https://www.slyinc.com/products/dust-collectors/explosion-protection-expertise/) - [Cyclone Dust Collector](https://www.slyinc.com/products/dust-collectors/cyclone-dust-collector/) - [Baghouse Dust Collector Parts & Replacement Filters](https://www.slyinc.com/products/dust-collectors/replacement-parts/) - [Dry Filters](https://www.slyinc.com/products/dust-collectors/replacement-parts/dry-filters/) - [Liquid Filters](https://www.slyinc.com/products/dust-collectors/replacement-parts/liquid-filters/) - [Cartridge Filters](https://www.slyinc.com/products/dust-collectors/replacement-parts/cartridge-filters/) - [Envelope Bags](https://www.slyinc.com/products/dust-collectors/replacement-parts/envelope-bags/) - [Pleated Bags](https://www.slyinc.com/products/dust-collectors/replacement-parts/pleated-bags/) - [Retrofits](https://www.slyinc.com/products/dust-collectors/replacement-parts/retrofits/) - [Dust Collector Cages](https://www.slyinc.com/products/dust-collectors/replacement-parts/dust-collector-cages/) - [Dust Collector Valves](https://www.slyinc.com/products/dust-collectors/replacement-parts/dust-collector-valves/) - [Dust Collector Timer Boards](https://www.slyinc.com/products/dust-collectors/replacement-parts/dust-collector-timer-boards/) - [Baghouse Manufacturer](https://www.slyinc.com/products/baghouse-manufacturer/) - [Industrial Wet Scrubbers](https://www.slyinc.com/products/industrial-wet-scrubbers/) - [Impinjet® Wet Scrubbers](https://www.slyinc.com/products/industrial-wet-scrubbers/impinjet-wet-scrubber/) - [Impinjet® Wet Scrubbers Application Examples](https://www.slyinc.com/products/industrial-wet-scrubbers/impinjet-wet-scrubber/impinjet-wet-scrubbers-application-examples/) - [Venturi Wet Scrubber](https://www.slyinc.com/products/industrial-wet-scrubbers/venturi-wet-scrubber/) - [Venturi Wet Scrubber Application Examples](https://www.slyinc.com/products/industrial-wet-scrubbers/venturi-wet-scrubber/venturi-wet-scrubber-application-examples/) - [Eductor Wet Scrubber](https://www.slyinc.com/products/industrial-wet-scrubbers/eductor-wet-scrubber/) - [Eductor Wet Scrubber Application Examples](https://www.slyinc.com/products/industrial-wet-scrubbers/eductor-wet-scrubber/eductor-wet-scrubber-application-examples/) - [Packed Tower Wet Scrubber](https://www.slyinc.com/products/industrial-wet-scrubbers/packed-tower-wet-scrubber/) - [FRP Wet Scrubbers](https://www.slyinc.com/products/industrial-wet-scrubbers/frp-wet-scrubbers/) - [Scrubber Parts](https://www.slyinc.com/products/industrial-wet-scrubbers/scrubber-parts/) - [Industrial Bulk Solids Loading Spouts](https://www.slyinc.com/products/industrial-bulk-solids-loading-spouts/) - [Custom Sheet Metal Fabrication](https://www.slyinc.com/products/custom-sheet-metal-fabrication/) - [Dry Dust Collector Filter Bags](https://www.slyinc.com/products/dry-dust-collector-filter-bags/) - [Cotton (CT)](https://www.slyinc.com/products/dry-dust-collector-filter-bags/cotton-ct/) - [Polyester (PE)](https://www.slyinc.com/products/dry-dust-collector-filter-bags/polyester-pe/) - [High Efficiency Felts (SLYHE)](https://www.slyinc.com/products/dry-dust-collector-filter-bags/high-efficiency-felts-slyhe/) - [Polypropylene (PP)](https://www.slyinc.com/products/dry-dust-collector-filter-bags/polypropylene-pp/) - [Nylon (NYL)](https://www.slyinc.com/products/dry-dust-collector-filter-bags/nylon-nyl/) - [Acrylic (AC)](https://www.slyinc.com/products/dry-dust-collector-filter-bags/acrylic-ac/) - [Aramid (MX)](https://www.slyinc.com/products/dry-dust-collector-filter-bags/aramid-mx/) - [Fiberglass (FG)](https://www.slyinc.com/products/dry-dust-collector-filter-bags/fiberglass-fg/) - [P-84 (PM)](https://www.slyinc.com/products/dry-dust-collector-filter-bags/p-84-pm/) - [PPS (Polyphenylene Sulfide)](https://www.slyinc.com/products/dry-dust-collector-filter-bags/pps-polyphenylene-sulfide/) - [Teflon (TX)](https://www.slyinc.com/products/dry-dust-collector-filter-bags/teflon-tx/) - [Filter Bag Finishes](https://www.slyinc.com/products/dry-dust-collector-filter-bags/filter-bag-finishes/) - [SlyMax](https://www.slyinc.com/products/dry-dust-collector-filter-bags/slymax/) - [Services](https://www.slyinc.com/services/) - [OEM](https://www.slyinc.com/oem/) - [SHOP](https://www.slyinc.com/shop/) - [Industries](https://www.slyinc.com/industries/) - [Biomass](https://www.slyinc.com/industries/biomass/) - [Carbon Black](https://www.slyinc.com/industries/carbon-black/) - [Fly Ash](https://www.slyinc.com/industries/fly-ash/) - [Lithium](https://www.slyinc.com/industries/lithium/) - [Mining & Minerals](https://www.slyinc.com/industries/mining-minerals/) - [Chemicals](https://www.slyinc.com/industries/chemicals/) - [Pharmaceuticals](https://www.slyinc.com/industries/pharmaceuticals/) - [Plastics](https://www.slyinc.com/industries/plastics/) - [Metalworking](https://www.slyinc.com/industries/metalworking/) - [Oil & Gas](https://www.slyinc.com/industries/oil-gas/) - [Powder & Bulk Solids](https://www.slyinc.com/industries/powder-bulk-solids/) - [Food Processing](https://www.slyinc.com/industries/food-processing/) - [Cement & Asphalt](https://www.slyinc.com/industries/cement-asphalt/) - [Resources](https://www.slyinc.com/resources/) - [Sales Drawings](https://www.slyinc.com/resources/sales-drawings/) - [Videos](https://www.slyinc.com/resources/videos/) - [Case Studies](https://www.slyinc.com/resources/case-studies/) - [White Papers](https://www.slyinc.com/resources/white-papers/) - [Resource Index](https://www.slyinc.com/resources/resource-index/) - [Blog](https://www.slyinc.com/blog/) - [About](https://www.slyinc.com/about/) - [News](https://www.slyinc.com/about/news-events/) - [Testimonials](https://www.slyinc.com/about/testimonials/) - [The Sly Approach](https://www.slyinc.com/about/sly-approach/) - [Our History](https://www.slyinc.com/about/history/) - [Sales Personnel](https://www.slyinc.com/about/sales-personnel/) - [Employment Opportunities](https://www.slyinc.com/about/employment-opportunities/) - [Sales Representation Opportunities](https://www.slyinc.com/about/sales-representation-opportunities/) - [Contact](https://www.slyinc.com/contact/) - [Rep Locator](https://www.slyinc.com/contact/rep-locator/) - [Parts Request](https://www.slyinc.com/contact/request-parts/) - [Request a Quote](https://www.slyinc.com/contact/request-a-quote/) - [Cookie Policy](https://www.slyinc.com/cookie-policy/) - [Privacy Policy](https://www.slyinc.com/privacy-policy/) - [Terms And Conditions](https://www.slyinc.com/terms-and-conditions/) - [Cart](https://www.slyinc.com/cart/) --- ### [Rep Locator](https://www.slyinc.com/contact/rep-locator/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/10/sly-air-pollution-control-rep-locator.jpg "sly-air-pollution-control-rep-locator | Sly Air Pollution Control") # Rep Locator **Find a Sly Representative Near You.** ## Contact Our Experts --- Get in touch with us! With our breadth and depth of knowledge and expertise in the dust collection industry, you can be assured that we can answer any questions you may have. We look forward to hearing from you—use the form here or check out our details below. Enter in your postal code to find the rep that covers your area. --- ### [Industries](https://www.slyinc.com/industries/) **Published:** June 29, 2024 **Author:** Mike Eaton **Content:** ![](https://www.slyinc.com/wp-content/uploads/2025/07/industrial-air-dust-control-systems-1024x400.jpg "industrial-air-dust-control-systems | Sly Air Pollution Control") # Industries **Reliable Dust Control for any Industry.** ## Industrial Dust Control --- We understand that each industry, company, and facility has different needs and specifications, but they all need dust control. While the essential tools and equipment remain the same, companies from around the globe come to Sly for a customized approach and innovative thinking for industrial collection systems. Our team of experienced professionals has assessed conditions in diverse industries. In fact, with over 150 years in the dust control business, we have designed, installed, and serviced industrial dust control equipment for countless application scenarios. Look to Sly to optimize air quality, control air pollution, enhance plant safety, and deliver long-term, reliable performance. ![](https://www.slyinc.com/wp-content/uploads/2024/06/air-quality-control-assessment.jpg "air-quality-control-assessment | Sly Air Pollution Control") Leading companies across major industries rely on our [industrial dust collection systems](https://www.slyinc.com/products/), [wet scrubbers](https://www.slyinc.com/products/wet-scrubbers/), and[ analysis services](https://www.slyinc.com/services/) to solve unique challenges and meet rigid specifications. ### Industries We Serve ![](https://www.slyinc.com/wp-content/uploads/2024/10/biomass-industry-thumb.jpg "biomass-industry-thumb | Sly Air Pollution Control")![](https://www.slyinc.com/wp-content/uploads/2024/07/biomass-processing-dust-recapture.png "biomass-processing-dust-recapture | Sly Air Pollution Control") Biomass materials range from wood chips and sawdust to agricultural residue or municipal waste. Its diversity presents dust collection challenges, with particle s[i](https://www.slyinc.com/industries/biomass/)ze, shape, moisture content, and combustion potential variations. Sly customizes dust collection solutions for optimal performance across the spectrum of biomass processing facilities. ### Biomass ![Piles of processed coal next to a rail siding waiting to be put on a train for transporting to a coastal port](https://www.slyinc.com/wp-content/uploads/2024/10/carbon-black-industry-thumb.jpg "carbon-black-industry-thumb | Sly Air Pollution Control")![](https://www.slyinc.com/wp-content/uploads/2024/07/carbon-black-dust-collection-white.png "carbon-black-dust-collection-white | Sly Air Pollution Control") Rising demand for carbon black has sparked innovative recovery methods like reclamation from old tires. The resulting dust is lightweight yet non-fluid, presenting occupational and environmental hazards. We craft dust collection systems designed to prioritize safety, promote air quality and optimize the effective recapture of this essential product. ### Carbon Black ![](https://www.slyinc.com/wp-content/uploads/2024/10/cement-asphalt-thumb.jpg "cement-asphalt-thumb | Sly Air Pollution Control")![](https://www.slyinc.com/wp-content/uploads/2024/07/cement-asphalt-dust-capture-white.png "cement-asphalt-dust-capture-white | Sly Air Pollution Control") Dust collection and air emission solutions are vital for cement and asphalt plants in the construction industry to meet regulations, protect health, and enhance efficiency. Sly offers tailored dust collection systems (baghouse and cartridge dust collectors) to capture pollutants, improve operations, and ensure regulatory adherence. ### Cement & Asphalt ![](https://www.slyinc.com/wp-content/uploads/2024/10/chemical-processing-thumb.jpg "chemical-processing-thumb | Sly Air Pollution Control")![](https://www.slyinc.com/wp-content/uploads/2024/07/chemical-processing-white.png "chemical-processing-white | Sly Air Pollution Control") Implementing dust collection systems in the chemical manufacturing industry ensures workplace safety, compliance with OSHA regulations, and protection against harmful airborne contaminants. ### Chemicals ![fly ash](https://www.slyinc.com/wp-content/uploads/2024/10/fly-ash-industry-thumb.jpg "fly-ash-industry-thumb | Sly Air Pollution Control")![](https://www.slyinc.com/wp-content/uploads/2024/07/coal-fly-ash-air-control-white.png "coal-fly-ash-air-control-white | Sly Air Pollution Control") Energy companies can realize commercial value through fly ash recovery with process dust collection rather than nuisance dust removal. Heavy loading, its highly abrasive nature, and ultra-fine fly ash particles’ tendency to fluidize during transfer create a material handling challenge. Our rugged, durable systems effectively capture this valuable commodity. ### Fly Ash ![](https://www.slyinc.com/wp-content/uploads/2024/10/food-processing-thumb.jpg "food-processing-thumb | Sly Air Pollution Control")![](https://www.slyinc.com/wp-content/uploads/2024/07/food-pet-food-processing-white.png "food-pet-food-processing-white | Sly Air Pollution Control") Learn about the importance of dust collection in the food processing industry, including challenges, protective measures, and solutions. Find out how customized dust control strategies can ensure safety and compliance in your facility. ### Food Processing ![](https://www.slyinc.com/wp-content/uploads/2024/10/lithium-battery-industry-thumb.jpg "lithium-battery-industry-thumb | Sly Air Pollution Control")![](https://www.slyinc.com/wp-content/uploads/2024/07/lithium-processing-air-pollution-control-white.png "lithium-processing-air-pollution-control-white | Sly Air Pollution Control") The lithium processing industry poses significant challenges due to the dust’s highly reactive nature, which poses the potential for thermal runaway if not properly handled. Sly offers specialized equipment, processes, and industry knowledge to ensure safe and effective dust collection. ### Lithium ![](https://www.slyinc.com/wp-content/uploads/2024/10/metalworking-dust-thumb.jpg "metalworking-dust-thumb | Sly Air Pollution Control")![](https://www.slyinc.com/wp-content/uploads/2024/07/metalworking-dust-white.png "metalworking-dust-white | Sly Air Pollution Control") Discover the importance of dust collection in metalworking for worker health, facility safety, and equipment performance. Learn about the various metal-cutting methods and the hazards of uncontrolled metal dust. Find out how to effectively manage dust collection and safeguard your operations with Sly’s top-quality equipment. ### Metalworking ![mining and mineral processing](https://www.slyinc.com/wp-content/uploads/2024/10/mining-minerals-processing-thumb.jpg "mining-minerals-processing-thumb | Sly Air Pollution Control")![](https://www.slyinc.com/wp-content/uploads/2024/07/mining-minerals-dust-control-white.png "mining-minerals-dust-control-white | Sly Air Pollution Control") We offer a comprehensive range of top-quality dust collection equipment, both wet and dry, designed to safeguard mineral and mining processing operations from potentially combustible and hazardous dust. ### Mining & Minerals ![](https://www.slyinc.com/wp-content/uploads/2024/10/oil-gas-thumbnail.jpg "oil gas thumbnail | Sly Air Pollution Control")![](https://www.slyinc.com/wp-content/uploads/2024/07/oil-gas-processing-white.png "oil-gas-processing-white | Sly Air Pollution Control") We specialize in managing fumes and dust for oil and gas manufacturers. Whether it’s pipeline production, fracking, or drilling equipment manufacturing, we provide thorough process analysis, identify challenges, and deliver customized air quality solutions tailored to your requirements. ### Oil &[Gas](https://www.slyinc.com/industries/biomass/) ![pharma](https://www.slyinc.com/wp-content/uploads/2024/10/pharma-thumbnail.jpg "pharma thumbnail | Sly Air Pollution Control")![](https://www.slyinc.com/wp-content/uploads/2024/07/pharmaceuticals-processing-white.png "pharmaceuticals-processing-white | Sly Air Pollution Control") Discover effective dust collection solutions for the pharmaceuticals and nutraceuticals industry. Learn how to control dust, mitigate hazards, ensure compliance, and safeguard worker health. ### Pharmaceuticals ![plastics manufacturing](https://www.slyinc.com/wp-content/uploads/2024/10/dust-control-plastics-manufacturing.jpg "dust-control-plastics-manufacturing | Sly Air Pollution Control")![](https://www.slyinc.com/wp-content/uploads/2024/07/plastics-air-pollution-control-white.png "plastics-air-pollution-control-white | Sly Air Pollution Control") Discover effective solutions for controlling dust and emissions and learn about the importance of dust collection in plastic manufacturing, including the risks involved, prevention of explosions, maintaining product quality, and protecting the environment. ### P[l](https://www.slyinc.com/industries/plastics/)astics ![](https://www.slyinc.com/wp-content/uploads/2024/10/powder-bulk-solids-industry-thumb.jpg "powder-bulk-solids-industry-thumb | Sly Air Pollution Control")![](https://www.slyinc.com/wp-content/uploads/2024/07/powder-bulk-solids-processing-white.png "powder-bulk-solids-processing-white | Sly Air Pollution Control") Learn how to optimize your powder and bulk solids operations with smart dust collection solutions. Understand key considerations when selecting dust collectors for effective dust capture and efficiency. Explore various dust collectors suitable for different applications, ensuring safety and compliance with regulations. Maximize dust collection efficiency and prevent dust disasters with tailored solutions for powder handling. ### Powder & Bulk Solids --- ### [Resources](https://www.slyinc.com/resources/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/10/resources-hero.jpg "resources-hero | Sly Air Pollution Control") # Resources **Drawings, Case Studies, White Papers, Videos, Filter Media Options & more.** ## SLY Resources --- At SLY, our mission is to be our clients’ trusted advisor. We offer resources to help apply, specify, lay out, and maintain Sly air pollution control equipment including dust collection, wet scrubbing and bulk loading equipment. ### [](https://www.slyinc.com/resources/case-studies/) ### [Case Studies](https://www.slyinc.com/resources/case-studies/) SLY’s case studies document specific solutions to industrial air pollution control or bulk solids loading problems. Discover some innovative solutions to specific application issues in the world of air pollution control and powder and bulk solids handling. ### [](https://www.slyinc.com/resources/white-papers/) ### [White Papers](https://www.slyinc.com/resources/white-papers/) Our white papers serve as a guide, helping readers better understand an issue, solve a problem or gain perspective to help make better decisions. These white papers discuss a variety of topics from specific industry applications to a review of the pros and cons of alternative types of dust collection equipment. ### [](https://www.slyinc.com/resources/sales-drawings/) ### [Sales Drawings & Literature](https://www.slyinc.com/resources/sales-drawings/) Sales drawings and brochures are available for the most common models of dry and wet dust collectors and bulk loading spouts. These provide basic dimensional and sizing information for planning and preliminary selection of equipment. ### [](https://www.slyinc.com/resources/videos/) ### [Videos](https://www.slyinc.com/resources/videos/) Short video tutorials are an effective method to share information quickly. From pulse timer set-up, installation of filter bags and cages, to start up procedures, these videos benefit both maintenance personnel and engineers with demonstrations of common dust collector operating procedures. ### [Fabric Filter Properties](https://www.slyinc.com/wp-content/uploads/2024/12/Properties-of-Filtration-Fabrics-12-24.pdf) [![](https://www.slyinc.com/wp-content/uploads/2024/10/fabric-filter-properties.jpg "fabric filter properties | Sly Air Pollution Control")](https://www.slyinc.com/wp-content/uploads/2024/12/Properties-of-Filtration-Fabrics-12-24.pdf) A simplified chart illustrating common filter bag media types, properties, and the operating conditions they are most suited for. ### [Fabric Filter Chemical Compatibility Chart](https://www.slyinc.com/wp-content/uploads/2024/12/Chemical-Compatibility-Fabric-Guide-1224.pdf) [![](https://www.slyinc.com/wp-content/uploads/2024/10/fabric-media-chemicals.jpg "fabric-media-chemicals | Sly Air Pollution Control")](https://www.slyinc.com/wp-content/uploads/2024/12/Chemical-Compatibility-Fabric-Guide-1224.pdf) A simplified chart illustrating common filter bag media types and their relative resistance to common industrial chemicals. ### [Baghouse Maintenance Checklist](https://info.slyinc.com/maintenance-checklist-for-a-better-baghouse-download-1?_gl=1%2A10pb3fg%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzEzMjQzNy4xNy4xLjE3MzcxMzMzNzEuMTguMC4xMDM1OTgyMjc0) [![](https://www.slyinc.com/wp-content/uploads/2024/10/maintenance-better-baghouse.jpg "maintenance-better-baghouse | Sly Air Pollution Control")](https://info.slyinc.com/maintenance-checklist-for-a-better-baghouse-download-1?_gl=1%2A10pb3fg%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzEzMjQzNy4xNy4xLjE3MzcxMzMzNzEuMTguMC4xMDM1OTgyMjc0) Sly created the Maintenance Checklist for a Better Baghouse to help you plan and perform routine inspections to keep your equipment running as designed, to avoid unscheduled maintenance time, and to prolong equipment service life. ### [Fabric Filter Media Options](https://www.slyinc.com/products/dry-dust-collector-filter-bags/) [![](https://www.slyinc.com/wp-content/uploads/2024/10/fabric-filter-media-options.jpg "fabric filter media options | Sly Air Pollution Control")](https://www.slyinc.com/products/dry-dust-collector-filter-bags/) View this comprehensive list of filter bag fabrics for regular and high-temperature dust collection applications. Information includes fabric medias, types of finishes, fabric weights, and applications. --- ### [Plastics](https://www.slyinc.com/industries/plastics/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/09/plastics-manufacturing-air-pollution-control.jpg "plastics-manufacturing-air-pollution-control | Sly Air Pollution Control") # Plastics **Sly Offers a Full Range of Baghouse Designs and Media Choices**. ## Dust Collection in Plastic Manufacturing --- The plastics industry encompasses a wide range of processes, including pelletizing, conveying, molding, and grinding. A significant amount of plastic dust, also known as “fines,” is generated throughout these processes. Controlling this dust is crucial not only to protect the well-being of workers but also to prevent hazardous explosions caused by charged, combustible plastic dust. These processes may also emit gases that require capturing and wet scrubbing. ### Dry Dust Collection Equipment for Plastic Manufacturing [![](https://www.slyinc.com/wp-content/uploads/2025/01/Vertical-Cartridge-Dust-Filtration-Collection.jpg) VCF Dust Collectors](https://www.slyinc.com/products/dust-collectors/vertical-cartridge-filter-collectors/) [![](https://www.slyinc.com/wp-content/uploads/2025/01/venturi-wet-scrubbers-external.jpg) Venturi Wet Scrubbers](https://www.slyinc.com/products/industrial-wet-scrubbers/venturi-wet-scrubber/) [![](https://www.slyinc.com/wp-content/uploads/2025/01/bulk-solids-material-handling.jpg) Loading Spouts](https://www.slyinc.com/products/industrial-bulk-solids-loading-spouts/) ![](https://www.slyinc.com/wp-content/uploads/2024/07/Air-Pollution-Control-Gradient.png "Air-Pollution-Control-Gradient | Sly Air Pollution Control") --- Sly offers a full range of baghouse designs and media choices to solve the toughest pollution control problems, including high temperatures and pressures and corrosives. Our technicians can draw upon 150 years of industry knowledge when designing and building proprietary systems for companies of all types. [Contact Sly](/contact) ### Understanding the Risks in Plastic Production Plastic production involves diverse formulations encompassing thousands of different chemicals. These chemicals include plastic monomers, epoxies, resins, colorants, surfactants, plasticizers, and other additives. Many of these substances pose risks to human health and the environment, and it’s important to note their potential exposure levels can vary depending on the specific manufacturing process. ![plastics manufacturing](https://www.slyinc.com/wp-content/uploads/2024/10/dust-control-plastics-manufacturing.jpg "dust-control-plastics-manufacturing | Sly Air Pollution Control") For instance, certain chemicals may only become hazardous when vaporized during thermal processes while remaining as benign as plastic dust. Additionally, the exposure risk associated with different types of plastics may depend on the size of the particulate generated during the process and whether it is considered respirable. Therefore, manufacturers involved in plastic and Fiber Reinforced Polymers (FRPs) production or handling should obtain Safety Data Sheets (SDSs) for the substances they work with and conduct a comprehensive evaluation to assess exposure risks and relevant regulations specific to their processes. #### Reducing Dust: Steps to Take Sly’s dust control solutions effectively prevent and control dust and emissions, addressing all associated issues. For industry-standard guidance and advice, please feel free to [contact our team](https://www.slyinc.com/contact/). We are committed to helping industrial operators and processors secure the most suitable air pollution control system for even the most demanding dusts. ##### Preventing Explosions Certain substances frequently utilized in the plastics and rubber industry possess the inherent risk of explosion. During manufacturing procedures, the generation of a “dust cloud” can transpire, which, in the presence of air and an ignition source, may lead to severe explosions, potentially resulting in loss of life. To reduce explosive hazards, it is essential to carefully position equipment, ensure no leakages around dust-producing handling systems, and minimize dust-related housekeeping tasks to prevent dust egress into the production environment. This improves machinery productivity, reduces breakdowns, and saves maintenance costs and operator intervention. ##### Maintaining Product Quality Cross-contamination with other materials during manufacturing can negatively impact product quality and safety, resulting in unusable end products. This has a detrimental effect on productivity and profitability. Maximizing product yield is crucial; an effective filtration system can help you achieve this. ##### Protecting The Environment Many products used in the rubber and plastics industry can be hazardous to the environment, and businesses have a legal obligation to comply with emissions regulations, such as the Environmental Protection Act. By filtering air and removing contaminants, a Sly system ensures compliance with legislation and helps keep emissions at the required level. ###### Featured Resources [![](https://www.slyinc.com/wp-content/uploads/2024/08/Baghouse.jpg "Baghouse | Sly Air Pollution Control")](https://www.slyinc.com/blog/what-is-a-baghouse/) #### What is a Baghouse? Uncontrolled dust is a danger to your business. Not only are pollutants like dust and airborne dirt a threat to the safety of your workers, but they can also lead to issues and defects with your products. If things get bad enough, they can even cause equipment malfunctions and plant-wide shutdowns. It’s simple – when your facility isn’t running, you’re not making money. That’s why you need a means of air quality control, like a baghouse. [Read More](https://www.slyinc.com/blog/what-is-a-baghouse/) --- ### [Oil & Gas](https://www.slyinc.com/industries/oil-gas/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/10/petcoke-dust-control.jpg "petcoke-dust-control | Sly Air Pollution Control") # Oil & gas **We Specialize in Managing Fumes and Dust for Oil and Gas Manufacturers.** ## Dust Collection in the Oil & Gas Industry --- The oil and gas industry relies heavily on specialized equipment throughout its exploration, extraction, refining, storage, and distribution stages. Dust, fumes, and gas may be generated during each of these stages. This encompasses a wide range of products, including the following: Infrastructure components for oil and gas transmission pipelines, distribution pipelines, drilling rigs, and offshore platforms. Storage tanks and pressure vessels, tankers, barges, and specialized tanker trucks and railcars. Infrastructure and equipment for refining facilities during separation, conversion, and treatment. Drilling equipment designed for high-temperature and high-pressure environments. ### Equipment for the Oil & Gas Industry [![](https://www.slyinc.com/wp-content/uploads/2025/01/CBR-cyclindrical-dust-collector-load-spout.jpg) CBR Dust Collectors](https://www.slyinc.com/products/dust-collectors/tubejet-baghouse-dust-collectors/ctr-cbr-cylindrical-pulse-jet-collectors/) [![](https://www.slyinc.com/wp-content/uploads/2025/01/Sly-Packed-Tower-9-ft.jpg) Packed Tower Wet Scrubbers](https://www.slyinc.com/products/industrial-wet-scrubbers/packed-tower-wet-scrubber/) [![](https://www.slyinc.com/wp-content/uploads/2025/01/sly-spout-load-truck.jpg) Loading Spouts](https://www.slyinc.com/products/industrial-bulk-solids-loading-spouts/) ![](https://www.slyinc.com/wp-content/uploads/2024/07/Air-Pollution-Control-Gradient.png "Air-Pollution-Control-Gradient | Sly Air Pollution Control") --- Sly offers a complete line of wet scrubber and dry dust collection equipment. Our technicians draw upon industry knowledge gathered during our 150-year history to help tailor the best system for your needs. Packed tower scrubbers are designed for chemical scrubbing of contaminants from gas streams. Contact Sly to design, fabricate, and install a wet scrubber system tailored to your oil and gas operations. [Contact Sly](/contact) ### Navigating the Challenges: Dust & Fume Collection In addition to these challenges, the oil and gas manufacturing industry faces specific dust and fume collection concerns. For instance, welding of heavy equipment and pipelines, a common practice in this industry, generates toxic fumes that pose risks to worker health. The volume and composition of weld fumes vary depending on the materials and processes used, often containing toxic elements like hexavalent chromium, manganese, nickel, and beryllium. Uncontrolled exposure to these fumes can lead to various health issues, including manganese and lung cancer. Moreover, cutting and grinding heavy steel in the oil and gas industry produces significant amounts of dust. This dust irritates the lungs, poses toxicity risks when inhaled or ingested, and can potentially damage other equipment and processes. Containing and controlling this heavy dust can be a challenge. Corrosion resistance is also crucial for equipment used in the oil and gas industry due to highly corrosive environments and prolonged exposure. However, the materials and coatings used to enhance corrosion resistance often contain highly toxic elements like cadmium, further increasing the danger associated with working with dust or fumes. ### Controlling Dust in Oil and Gas Drilling: Ensuring Safety and Sustainability Furthermore, it is worth mentioning the importance of controlling the dust generated during drilling for oil and gas, particularly in the context of fracking. Fracking involves the use of sand as an abrasive for the drill bit. Sand plants that provide the fracking sand to the oil and gas industry play a significant role in managing the dust generated during this process. Both wet scrubbers and dry dust collectors are utilized, depending on the application and the plant’s capacity to handle the waste from wet scrubbers. By addressing these challenges and implementing appropriate dust collection measures, the oil and gas industry can ensure the safety and well-being of its workers while minimizing environmental impacts. ### Solutions for Dust and Fumes in the Oil and Gas Manufacturing Industry ![](https://www.slyinc.com/wp-content/uploads/2025/01/oil-drilling-offshore1.jpg "oil-drilling-offshore1 | Sly Air Pollution Control") ![](https://www.slyinc.com/wp-content/uploads/2025/01/oil-gas-industry-dust-fumes1.jpg "oil-gas-industry-dust-fumes1 | Sly Air Pollution Control") At Sly, we specialize in managing fumes and dust for oil and gas manufacturers. Whether it’s pipeline production, fracking, or drilling equipment manufacturing, we provide thorough process analysis, identify challenges, and deliver customized air quality solutions tailored to your requirements. For industry-standard guidance and advice, please feel free to [contact our team](https://www.slyinc.com/contact/). ###### Featured Resources [![](https://www.slyinc.com/wp-content/uploads/2024/09/sly-wet-scrubber-thumbnail.png "sly-wet-scrubber-thumbnail | Sly Air Pollution Control")](https://info.slyinc.com/wet-scrubber-guide) #### The Complete Guide to Getting Started with Wet Scrubbers The first step to getting the best wet scrubbing system possible is knowing what your application needs. Sly’s newest resource, The Complete Guide to Getting Started with Wet Scrubbers, details everything you need to know about wet scrubbers and how to make the right selection for your facility. [Read More](https://info.slyinc.com/wet-scrubber-guide) --- ### [Chemicals](https://www.slyinc.com/industries/chemicals/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/09/chemical-processing-air-pollution-control.jpg "chemical-processing-air-pollution-control | Sly Air Pollution Control") # Chemicals **Our Systems Efficiently Remove or Recycle Dust, Promoting Cleanliness and Productivity.** ## Dust Collection for the Chemical Manufacturing Industry --- Airborne dust poses a significant risk to air quality when handling, conveying, or dumping materials into processing equipment. It not only endangers workers, equipment, and manufacturing plants but also has adverse environmental impacts. These chemical dusts are toxic and highly flammable, potentially cross-contaminating products and putting end users and manufacturers at risk. In addition to dusts, gas contanimants will need to be captured and scrubbed to maintain a healthy enviornment. In addressing this issue, OSHA highly recommends maintaining workplace air quality through feasible engineering and work practice controls. Implementing dust collection systems proves to be the most cost-effective approach in chemical manufacturing or processing facilities. These systems continuously operate, utilizing advanced filtration technology to efficiently capture and contain airborne dust and contaminants. ### Chemical Manufacturing Dry & Wet Scrubber Equipment [![](https://www.slyinc.com/wp-content/uploads/2025/01/Combustible-dust-collectors-VCF.jpg) VCF Dust Collectors](https://www.slyinc.com/products/dust-collectors/vertical-cartridge-filter-collectors/) [![](https://www.slyinc.com/wp-content/uploads/2025/01/Sly-Venturi-scrubber-battery-burn-chamber.jpg) Venturi Wet Scrubbers](https://www.slyinc.com/products/industrial-wet-scrubbers/venturi-wet-scrubber/) [![](https://www.slyinc.com/wp-content/uploads/2025/01/slyclone-explosion-protection-venting.jpg) Cyclone Dust Collectors](https://www.slyinc.com/products/dust-collectors/cyclone-dust-collector/) ![](https://www.slyinc.com/wp-content/uploads/2024/07/Air-Pollution-Control-Gradient.png "Air-Pollution-Control-Gradient | Sly Air Pollution Control") --- Sly offers a complete line of wet scrubber equipment to keep chemical manufacturing clean from potentially combustible, hazardous gases in the air. The Sly Venturi Scrubber efficiently collects fine particulate and mists. Scrubbing liquid is atomized into fine droplets. Adjustable throats for performance optimization are standard. Capacities to 76,000+ CFM per unit. Designs are available for high-temperature, highly corrosive applications. [Contact Sly](/contact) ### Regulations on Dust Collection for Chemical Manufacturers Complying with OSHA regulations on dust collection is crucial for maintaining a safe workplace for chemical manufacturers. These regulations are based on permissible exposure limits (PELs) and 8-hour time-weighted averages (TWAs). Approaching around 500 PELs, OSHA advises implementing feasible controls and providing personal respiratory equipment to workers when necessary. High-quality air filtration systems are indispensable in ensuring safety and removing harmful particulates associated with chemical dust. ![](https://www.slyinc.com/wp-content/uploads/2024/09/AdobeStock_530357421-scaled-1.jpeg "Stainless vertical steel tanks with equipment tank chemical cell | Sly Air Pollution Control") Understanding the content of airborne contaminants is vital for improving air quality and meeting OSHA regulations. Comprehensively testing chemical levels in air quality is an important step toward worker safety and compliance. Failure to comply with OSHA regulations can result in severe fines and legal complications. By taking the necessary steps to adjust safety protocols and remain within compliance, chemical manufacturers can prioritize worker safety and maintain industry leadership. At Sly, we offer a comprehensive range of top-quality dust collection equipment designed to safeguard chemical processing operations from potentially combustible and hazardous dust. Our systems efficiently remove or recycle dust, promoting cleanliness and productivity. [Contact Sly](https://www.slyinc.com/contact/) today, and let us tailor a dust collection system to meet the unique needs of your bioprocessing operations. ### How to Control the Risk of Chemical Dust Exposure with an Industrial Dust Collector SLY provides top-quality dust collectors, both wet and dry, that efficiently collect various types of chemical dust, including toxic, combustible, cross-contaminant, and nuisance dust. These collectors ensure the safety of all employees working in facilities where toxic chemical dust is present. Their benefits include: - Time, money and energy saved - Protection of people, property and the environment form dust hazards - Prevention of cross-contamination - Compliance satisfaction with OSHA, NFPA and EPA regulations ###### Featured Resources [![](https://www.slyinc.com/wp-content/uploads/2024/08/Venturi-Model-2-and-Separator.jpg "Venturi-Model-2-and-Separator | Sly Air Pollution Control")](https://www.slyinc.com/blog/what-you-need-to-know-about-venturis-and-dust-collection/) #### What You Need to Know About Venturis and Dust Collection In short, in dry powder dust collectors the venturi creates a secondary airflow to amplify the pulse cleaning of the filter bags. A venturi is economical when you have longer filter bags or a large number of filter bags in a row and more cleaning air is required. Compressed air is typically the costliest utility in the operation of a dust collection system. [Read More](https://www.slyinc.com/blog/what-you-need-to-know-about-venturis-and-dust-collection/) [![](https://www.slyinc.com/wp-content/uploads/2024/08/SLY_WetScrubber_FactSheet.jpg "SLY_WetScrubber_FactSheet | Sly Air Pollution Control")](https://www.slyinc.com/blog/which-wet-scrubber-is-right-for-my-application/) #### Which Wet Scrubber is Right for My Application? Are you considering using a wet scrubber to improve your facility’s air quality control? With high collection efficiencies, explosion risk mitigation, and the ability to remove both dust and gases/vapors in one system, wet scrubbers are great for a variety of industrial applications. Paring the perfect wet scrubber to the right application can lead to collection efficiencies of over 99.99% in certain instances. [Read More](https://www.slyinc.com/blog/which-wet-scrubber-is-right-for-my-application/) --- ### [Our History](https://www.slyinc.com/about/history/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/09/history-hero.jpg "history hero | Sly Air Pollution Control") # Our History ****Celebrating 150 Years in Business.**** ![](https://www.slyinc.com/wp-content/uploads/2024/10/sly-150-centered.png "sly-150-centered | Sly Air Pollution Control") ## Since 1874 --- SLY was founded in 1874 as a manufacturer of foundry equipment. The company’s experience with dusty environments lead to its development of industrial dust collection equipment. With Sly’s focus on industrial dust collection, the company subsequently expanded into four styles of dust collectors and four styles of wet scrubbers. **Dust Collectors** 1. Envelope bag type: our [Dynaclone and Pactecon legacy brands](https://www.slyinc.com/legacy-dust-collectors/) 2. [TubeJet tubular bag style baghouses: ](https://www.slyinc.com/tubejet-baghouse-dust-collectors/)Top load, side load, square, rectangular, and cylindrical 3. Pleated bag TubeJets 4. [Cartridge collectors:](https://www.slyinc.com/cartridge-dust-collectors/) Horizontal and vertical cartridge mounting options **Wet Scrubbers** 1. [Impinjet: Impingement baffle plate](https://www.slyinc.com/products/industrial-wet-scrubbers/impinjet-wet-scrubber/) 2. [Venturi: Adjustable throat](https://www.slyinc.com/products/industrial-wet-scrubbers/venturi-wet-scrubber/) 3. [Packed Tower](https://www.slyinc.com/products/industrial-wet-scrubbers/packed-tower-wet-scrubber/) 4. [Eductor](https://www.slyinc.com/products/industrial-wet-scrubbers/eductor-wet-scrubber/) ![](https://www.slyinc.com/wp-content/uploads/2024/11/sly-history-yesterday.jpg "sly--history-yesterday | Sly Air Pollution Control") YESTERDAY ![](https://www.slyinc.com/wp-content/uploads/2024/11/sly-history-today.jpg "sly--history-today | Sly Air Pollution Control") TODAY ## The Expertise You Need. The Service You Deserve. --- ![](https://www.slyinc.com/wp-content/uploads/2024/06/sly-150-centered.png "sly-150-centered | Sly Air Pollution Control") Celebrating 150 years of expertise, no company provides a better customer experience than Sly. From troubleshooting your current dust collection equipment to customizing an industrial dust collector or wet scrubber system to meet your needs, Sly is committed to total customer support and service. #### Sly 150th Anniversary --- #### 150 Years of Sly 1874 #### Founded ![1874 Sly founded](https://www.slyinc.com/wp-content/uploads/2024/12/1874-sly-founded.png "1874-sly-founded | Sly Air Pollution Control") W.W. Sly founded what is now known as Sly, LLC, marking the company’s start. This is one year after the Jesse James gang first robbed a train on horseback in the American West. 1874 1902 #### 1st U.S. Patent ![Sly first patent](https://www.slyinc.com/wp-content/uploads/2024/12/1902-sly-first-patent.png "1902-sly-first-patent | Sly Air Pollution Control") Sly received the first U.S. patent for a fabric filter, introducing a significant advancement in air pollution control. Just two years after this, the Wright brothers would successfully record the first air flight at Kitty Hawk, N.C. 1902 1920 #### Mayfield Road Mob ![1920 Sly Mayfield Rd](https://www.slyinc.com/wp-content/uploads/2024/12/1920-sly-mayfield-rd-mob.png "1920-sly-mayfield-rd-mob | Sly Air Pollution Control") The company became part of Cleveland, OH historical lore when Wilfred C. Sly and George K. Fanner were murdered by the “Mayfield Road Mob” in a payroll holdup. 1920 1930 #### Marie Sly ![1930 Sly pics](https://www.slyinc.com/wp-content/uploads/2024/12/1930-marie-sly.png "1930-marie-sly | Sly Air Pollution Control") Marie Sly, along with four others, took ownership of Sly, notably appointing a woman as head of a manufacturing firm, during a time when female CEOs were extremely rare. This bold move came the year after the stock market crashed in 1929 and the country sank into the Great Depression. 1930 1960 #### Sly Expands ![1960 sly expansion](https://www.slyinc.com/wp-content/uploads/2024/12/1960-sly-expands.png "1960-sly-expands | Sly Air Pollution Control") Sly expanded its manufacturing capabilities by opening a plant in Mississippi dedicated to sewing filter bags. In the early 60s, the space program was gaining momentum, and the Beatles released their debut single. 1960 1962 #### Impinjet Scrubber ![impinjet sly](https://www.slyinc.com/wp-content/uploads/2024/12/1962-impinjet-sly.png "1962-impinjet-sly | Sly Air Pollution Control") The development of the Impinjet Scrubber marked a major innovation in gas cleaning technology, significantly improving the efficiency of removing particulates and gases from industrial emissions. 1962 1974 #### Train Ave Plant ![1974 Train Ave](https://www.slyinc.com/wp-content/uploads/2024/12/1974-train-ave.png "1974-train-ave | Sly Air Pollution Control") A fire destroyed the Sly manufacturing plant on Train Avenue in Cleveland, resulting in a substantial loss. 1974 1976 #### Venturi Scrubber ![Sly venturi](https://www.slyinc.com/wp-content/uploads/2024/12/1976-sly-venturi.png "1976-sly-venturi | Sly Air Pollution Control") The invention of the Venturi Scrubber introduced a highly effective method for scrubbing gases, particularly useful in handling high dust loads and small particle sizes. America celebrated the bicentennial of the nation’s founding. 1976 1987 #### Vertical PleatJet ![Vertical Pleatjet](https://www.slyinc.com/wp-content/uploads/2024/12/1987-vertical-pleatjet.png "1987-vertical-pleatjet | Sly Air Pollution Control") The Vertical PleatJet (CF) was developed, showcasing Sly’s ongoing innovation in filter technology. 1987 1990 #### TubeJet Collector ![Sly Tubejet Collector](https://www.slyinc.com/wp-content/uploads/2024/12/1990-sly-tubejet-collector.png "1990-sly-tubejet-collector | Sly Air Pollution Control") The development of the STJ, SBR, CTR, CBR TubeJets (tubular bags) represented an advancement in baghouse filters, offering improved dust collection efficiency and ease of maintenance. 1990 1993 #### Strongsville OH ![Sly office in Strongsville](https://www.slyinc.com/wp-content/uploads/2024/12/1993-sly-strongsville.png "1993-sly-strongsville | Sly Air Pollution Control") Sly purchased a building and relocated to 8300 Dow Circle, Strongsville, OH, in the summer of 1994, marking a new chapter for the company. 2009: The Round Reverse Air (RAC) was developed, further expanding Sly’s portfolio of air pollution control solutions. 1993 2016 #### CPEG ![](https://www.slyinc.com/wp-content/uploads/2024/11/CPEG-Brand-Logo-white.png "CPEG-Brand-Logo-white | Sly Air Pollution Control") Sly was acquired by Carrier Process Equipment Group, Inc. (CPEG) on October 18, ending 145 years of being a family-owned and operated business as Ted Kurz retired. 2016 2024 #### 150-Year Anniversary ![](https://www.slyinc.com/wp-content/uploads/2024/12/2024-sly-150.png "2024-sly-150 | Sly Air Pollution Control") Sly celebrates 150 years in business, a rare milestone achieved by less than 0.5% of all U.S. companies. 2024 2024 – #### Complete Process Systems Sly’s rich history and long-standing tradition of excellence continues with more capabilities and a broader range of solutions. As a subsidiary of CPEG, Sly customers have access to additional material handling equipment to supplement production lines. From fluid bed dryers, rotary dryers and calciners, to feeders, conveyors, and industrial mixers, you can rely on Sly for complete process systems. 2024 – ##### Learn About Sly’s Complete Process Solutions Discover how we can help supplement your air pollution control system with material handling and process equipment that can be used upstream to complement your production line. [Contact Us](https://www.slyinc.com/contact/) --- ### [Parts Request](https://www.slyinc.com/contact/request-parts/) **Published:** September 17, 2024 **Author:** p1ws **Content:** ![parts](https://www.slyinc.com/wp-content/uploads/2024/11/Parts-Page-Hero.jpg "Parts-Page-Hero | Sly Air Pollution Control") # Parts Request Please fill out this quick form below, and one of Sly’s knowledgeable sales representatives will be in touch with you shortly to discuss the requested information. --- ### [Sales Representation Opportunities](https://www.slyinc.com/about/sales-representation-opportunities/) **Published:** September 24, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/10/job.jpg "job | Sly Air Pollution Control") # Sales Representation Opportunities **Join Our Team of Experienced Professionals**. ## Sales Representation Opportunities at SLY --- Sly sells our quality air pollution control products in the United States solely through manufacturers’ representatives. We currently have openings for exclusive contracts in the territories below. We provide our sales reps with technical expertise, responsive communications, a competitive commission structure, ongoing marketing programs, and all the benefits of working with a family-owned business with over 150 years of industry experience. Our own fabrication facility keeps us competitive and entirely in control of delivery and quality control. 01 ### Sales Rep *Chicago* Northern Illinois, Southern and Eastern Wisconsin, Northwest Indiana, and the Eastern Iowa river counties. Sly is seeking motivated sales professionals for the highly coveted Chicago sales territory. Mature territory with significant installed base of equipment. 02 ### Sales Rep *Upstate New York* Including border counties in Vermont, Massachusetts, and Pennsylvania Sly’s experience and broad product line of dust collectors, bulk loading spouts, and wet scrubbers allows us to look at an air pollution control problem and focus on the best overall solution, not just the piece of equipment we happen to sell. **If you like selling a quality engineered product, then Sly might be a good fit for your product line.** --- ### [Employment Opportunities](https://www.slyinc.com/about/employment-opportunities/) **Published:** September 24, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/11/sly-employment-jobs.jpg "sly-employment-jobs | Sly Air Pollution Control") # Employment Opportunities **Explore Our Current Job Openings: Join The Team.** ## Job Openings at SLY --- At SLY, we believe in creating a dynamic and inclusive work environment where every team member can thrive and grow. Explore our current job openings below and find out how you can contribute to our exciting journey. **Visit <https://www.cpeg.com/careers/> for current openings at SLY, LLC.** --- ### [Case Studies](https://www.slyinc.com/resources/case-studies/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/09/case-studies-hero.jpg "case studies hero | Sly Air Pollution Control") # Case Studies **Read More In Our Case Studies.** - [![Yellow industrial hoist with a spool of cable attached to a steel framework against a blue sky, likely part of an overhead crane system.](https://www.slyinc.com/wp-content/uploads/2026/03/Durable-Loading-Spouts-Hero.jpg "Durable-Loading-Spouts-Hero | Sly Air Pollution Control")](https://www.slyinc.com/resources/case-studies/durable-loading-spouts-stands-up-to-salt-air-in-cayman-islands/) ## [Durable Loading Spouts Stand Up To Salt Air in Cayman Islands](https://www.slyinc.com/resources/case-studies/durable-loading-spouts-stands-up-to-salt-air-in-cayman-islands/) National Cement’s dockside import terminal in the Cayman Islands needed loading equipment that could withstand constant salt air, moisture, and… [**Read More**](https://www.slyinc.com/resources/case-studies/durable-loading-spouts-stands-up-to-salt-air-in-cayman-islands/) - [![](https://www.slyinc.com/wp-content/uploads/2026/03/carbon-black.jpg "carbon-black | Sly Air Pollution Control")](https://www.slyinc.com/resources/case-studies/custom-dust-collection-system-for-a-major-tire-manufacturer/) ## [Custom Dust Collection System for a Major Tire Manufacturer](https://www.slyinc.com/resources/case-studies/custom-dust-collection-system-for-a-major-tire-manufacturer/) A major tire plant needed to control combustible carbon black dust generated indoors, with no option to vent externally and… [**Read More**](https://www.slyinc.com/resources/case-studies/custom-dust-collection-system-for-a-major-tire-manufacturer/) - [![](https://www.slyinc.com/wp-content/uploads/2024/08/venturi-scrubber-tank.jpg "venturi-scrubber-tank | Sly Air Pollution Control")](https://www.slyinc.com/resources/case-studies/venturi-scrubber-spray-dryer-emissions/) ## [Custom Venturi Scrubber for Spray Dryer Emissions](https://www.slyinc.com/resources/case-studies/venturi-scrubber-spray-dryer-emissions/) A food flavoring manufacturer’s spray dryer generated fine, sticky, hygroscopic particles that repeatedly blinded baghouse filters and degraded system performance.… [**Read More**](https://www.slyinc.com/resources/case-studies/venturi-scrubber-spray-dryer-emissions/) - [![pleated bags](https://www.slyinc.com/wp-content/uploads/2024/08/Sly-pleated-bags-collector.jpg "Sly-pleated-bags-collector | Sly Air Pollution Control")](https://www.slyinc.com/resources/case-studies/pleated-bags-are-not-the-same-as-cartridges-its-all-in-the-design/) ## [Pleated Bags Improve Dust Collection Performance at Novamet Specialty Products](https://www.slyinc.com/resources/case-studies/pleated-bags-are-not-the-same-as-cartridges-its-all-in-the-design/) Novamet was losing valuable nickel powder to inefficient filtration and dealing with frequent, messy filter changes under their existing dust… [**Read More**](https://www.slyinc.com/resources/case-studies/pleated-bags-are-not-the-same-as-cartridges-its-all-in-the-design/) - [![dryer ventilation](https://www.slyinc.com/wp-content/uploads/2024/08/STJ-Limestone-Dryer2.jpg "STJ-Limestone-Dryer2 | Sly Air Pollution Control")](https://www.slyinc.com/resources/case-studies/efficient-dryer-ventilation-with-slys-custom-collector/) ## [Efficient Dryer Ventilation with Sly’s Custom Collector](https://www.slyinc.com/resources/case-studies/efficient-dryer-ventilation-with-slys-custom-collector/) A limestone supplier needed a dust collector that could handle the high airflow demands of a fluid bed dryer while… [**Read More**](https://www.slyinc.com/resources/case-studies/efficient-dryer-ventilation-with-slys-custom-collector/) - [![](https://www.slyinc.com/wp-content/uploads/2024/08/custom-dust-collector_425x300.png "custom-dust-collector_425x300 | Sly Air Pollution Control")](https://www.slyinc.com/resources/case-studies/custom-dust-collector-replaces-worn-non-compliant-unit/) ## [Custom Dust Collector Replaces Worn, Non-Compliant Unit](https://www.slyinc.com/resources/case-studies/custom-dust-collector-replaces-worn-non-compliant-unit/) Industry: Mining & Minerals Application Gilsonite Vacuum Conveying and Dust Collection Case Study Highlights Replaced 35-year-old, non-compliant dust collector Custom-designed… [**Read More**](https://www.slyinc.com/resources/case-studies/custom-dust-collector-replaces-worn-non-compliant-unit/) - [![](https://www.slyinc.com/wp-content/uploads/2024/08/dried-palm-fronds.png "dried-palm-fronds | Sly Air Pollution Control")](https://www.slyinc.com/resources/case-studies/wave-of-the-future-dried-palm-fronds-a-prickly-bioenergy-source/) ## [Wave of the Future: Dried Palm Fronds a Prickly Bioenergy Source](https://www.slyinc.com/resources/case-studies/wave-of-the-future-dried-palm-fronds-a-prickly-bioenergy-source/) Industry: Bioenergy / Biomass Application Palm Frond Drying and Dust Collection Case Study Highlights The system was designed for a… [**Read More**](https://www.slyinc.com/resources/case-studies/wave-of-the-future-dried-palm-fronds-a-prickly-bioenergy-source/) - [![](https://www.slyinc.com/wp-content/uploads/2024/08/AdobeStock_446579274-1.jpg "AdobeStock_446579274-1 | Sly Air Pollution Control")](https://www.slyinc.com/resources/case-studies/control-and-repurpose-deep-fryer-oil-emissions-with-slys-venturi-wet-scrubber/) ## [Control and Repurpose Deep Fryer Oil Emissions with Sly’s Venturi Wet Scrubber](https://www.slyinc.com/resources/case-studies/control-and-repurpose-deep-fryer-oil-emissions-with-slys-venturi-wet-scrubber/) Industry: Food Processing Application Commercial Frying Emissions Control Case Study Highlights Replaced an underperforming existing wet scrubber Achieved greater than… [**Read More**](https://www.slyinc.com/resources/case-studies/control-and-repurpose-deep-fryer-oil-emissions-with-slys-venturi-wet-scrubber/) --- ### [Videos](https://www.slyinc.com/resources/videos/) **Published:** August 5, 2024 **Author:** p1ws **Content:** # Videos - [![](https://www.slyinc.com/wp-content/uploads/2024/08/Screenshot-2024-08-26-140003.jpg "Screenshot 2024-08-26 140003 | Sly Air Pollution Control")](https://www.slyinc.com/resources/videos/why-choose-sly/) ## [Why Choose Sly?](https://www.slyinc.com/resources/videos/why-choose-sly/) August 26, 2024 Learn more about the products, services and benefits offered by Sly. [**Read More**](https://www.slyinc.com/resources/videos/why-choose-sly/) - [![](https://www.slyinc.com/wp-content/uploads/2024/08/sly-incorporated-video.png "sly-incorporated-video | Sly Air Pollution Control")](https://www.slyinc.com/resources/videos/sly-incorporated-dry-filters-dust-collectors/) ## [Sly Incorporated Dry Filters & Dust Collectors](https://www.slyinc.com/resources/videos/sly-incorporated-dry-filters-dust-collectors/) August 19, 2024 Sly Incorporated Dry Filters & Dust Collectors [**Read More**](https://www.slyinc.com/resources/videos/sly-incorporated-dry-filters-dust-collectors/) - [![](https://www.slyinc.com/wp-content/uploads/2024/08/Screenshot-2024-08-26-103334.jpg "Screenshot 2024-08-26 103334 | Sly Air Pollution Control")](https://www.slyinc.com/resources/videos/150th-anniversary/) ## [150th Anniversary](https://www.slyinc.com/resources/videos/150th-anniversary/) April 2, 2024 This year marks Sly’s 150th anniversary of operations. Few companies in America can claim the distinction of surviving and thriving… [**Read More**](https://www.slyinc.com/resources/videos/150th-anniversary/) - [![](https://www.slyinc.com/wp-content/uploads/2024/08/Screenshot-2024-08-26-104238.jpg "Screenshot 2024-08-26 104238 | Sly Air Pollution Control")](https://www.slyinc.com/resources/videos/corrosive-emissions-frp-wet-scrubbers/) ## [Corrosive Emissions: FRP Wet Scrubbers](https://www.slyinc.com/resources/videos/corrosive-emissions-frp-wet-scrubbers/) February 23, 2024 Sly offers fiberglass reinforced plastic (FRP) wet scrubbers, which are indispensable to control industrial exhaust gases for environmental compliance. [**Read More**](https://www.slyinc.com/resources/videos/corrosive-emissions-frp-wet-scrubbers/) - [![](https://www.slyinc.com/wp-content/uploads/2024/08/Screenshot-2024-08-26-135320.jpg "Screenshot 2024-08-26 135320 | Sly Air Pollution Control")](https://www.slyinc.com/resources/videos/the-importance-of-maintenance/) ## [The Importance of Maintenance](https://www.slyinc.com/resources/videos/the-importance-of-maintenance/) April 1, 2022 The importance of having an inspection/maintenance program for your dust collector cannot be understated. [**Read More**](https://www.slyinc.com/resources/videos/the-importance-of-maintenance/) - [![](https://www.slyinc.com/wp-content/uploads/2024/08/Screenshot-2024-08-26-135601.jpg "Screenshot 2024-08-26 135601 | Sly Air Pollution Control")](https://www.slyinc.com/resources/videos/total-dust-management/) ## [Total Dust Management](https://www.slyinc.com/resources/videos/total-dust-management/) January 24, 2022 Total dust management is about taking a full-service, systematic approach to dust control where air quality experts help you specify… [**Read More**](https://www.slyinc.com/resources/videos/total-dust-management/) - [![](https://www.slyinc.com/wp-content/uploads/2024/08/Screenshot-2024-08-26-135802.jpg "Screenshot 2024-08-26 135802 | Sly Air Pollution Control")](https://www.slyinc.com/resources/videos/the-anatomy-of-an-impinjet-wet-scrubber/) ## [The Anatomy of an Impinjet Wet Scrubber](https://www.slyinc.com/resources/videos/the-anatomy-of-an-impinjet-wet-scrubber/) November 5, 2020 Look inside Sly’s Impinjet Wet Scrubber to see how it works. [**Read More**](https://www.slyinc.com/resources/videos/the-anatomy-of-an-impinjet-wet-scrubber/) - [![](https://www.slyinc.com/wp-content/uploads/2019/09/Screenshot-2024-08-26-140222.jpg "Screenshot 2024-08-26 140222 | Sly Air Pollution Control")](https://www.slyinc.com/resources/videos/the-anatomy-of-a-baghouse/) ## [The Anatomy of a Baghouse](https://www.slyinc.com/resources/videos/the-anatomy-of-a-baghouse/) September 5, 2019 What’s actually IN a baghouse-style dust collector and how does it work? In this walkthrough, we give an overview of… [**Read More**](https://www.slyinc.com/resources/videos/the-anatomy-of-a-baghouse/) - [![](https://www.slyinc.com/wp-content/uploads/2018/08/Screenshot-2024-08-26-140445.jpg "Screenshot 2024-08-26 140445 | Sly Air Pollution Control")](https://www.slyinc.com/resources/videos/nfpa-recommended-filter-bag-grounding-strap-design/) ## [NFPA Recommended Filter Bag Grounding Strap Design](https://www.slyinc.com/resources/videos/nfpa-recommended-filter-bag-grounding-strap-design/) August 13, 2018 SLY, LLC recommends grounding industrial filter bags per the NFPA’s recommended dual grounding mesh strap system. [**Read More**](https://www.slyinc.com/resources/videos/nfpa-recommended-filter-bag-grounding-strap-design/) 1[2](?query-15-page=2&doing_wp_cron=1793315778.2171208858489990234375)[3](?query-15-page=3&doing_wp_cron=1793315778.2171208858489990234375) [»](/wp-cron.php?doing_wp_cron=1793315778.2171208858489990234375&query-15-page=2) --- ### [Pharmaceuticals](https://www.slyinc.com/industries/pharmaceuticals/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/09/pharmaceutical-processing-dust-control.jpg "pharmaceutical-processing-dust-control | Sly Air Pollution Control") # Pharmaceuticals **Our Systems Efficiently Remove or Recycle Dust, Promoting Cleanliness and Productivity.** ## Dust Collection Solutions for Pharma & Nutraceuticals --- While all types of pharmaceutical and nutraceutical production raise concerns about air quality, special attention should be given to dust control in solid dosage processes, including the production of tablets, powders, and powder-filled capsules. Unchecked pharmaceutical and nutraceutical dust has the potential to compromise processes and endanger the well-being of workers. Gas contaminants may exist in the exhaust stream as a result of processing, and must be captured and scrubbed with a wet scrubber. ### Dry & Wet Dust Collection Equipment [![](https://www.slyinc.com/wp-content/uploads/2025/01/Vertical-Cartridge-Dust-Filtration-Collection.jpg) Cartridge Dry Dust Collectors](https://www.slyinc.com/products/dust-collectors/vertical-cartridge-filter-collectors/) [![](https://www.slyinc.com/wp-content/uploads/2025/01/pharmaceuticals-gas-scrubbing.jpg) Venturi Wet Scrubbers](https://www.slyinc.com/products/industrial-wet-scrubbers/venturi-wet-scrubber/) [![](https://www.slyinc.com/wp-content/uploads/2025/01/bulk-solids-material-handling.jpg) Loading Spouts](https://www.slyinc.com/products/industrial-bulk-solids-loading-spouts/) ![](https://www.slyinc.com/wp-content/uploads/2024/07/Air-Pollution-Control-Gradient.png "Air-Pollution-Control-Gradient | Sly Air Pollution Control") --- With Vertical Cartridge filters (VCFs), gravity works in your favor allowing dust and debris to fall off rather than gathering on the cartridge’s filter media. VCFs are an ideal choice for many applications where the dust is dry and free flowing. Cartridge filters are used for many processes and industries to control dust emissions, including chemical processing, minerals, blasting, welding, plasma cutting, dry powder handling, and metal finishing to name a few. [Contact Sly](/contact) #### Dust & Gases: Safeguarding Workers and the Environment with Precision and Efficiency Ensuring the safety of workers and the environment requires careful consideration of the three crucial phases involved in capturing dust and gases: Capture Our source capture equipment is strategically positioned at the origin of dust emissions, swiftly drawing in particles as they are released into the air. We maintain a healthier and safer environment by preventing dust cloud formation and minimizing dispersion. Transport Once the particles have been captured, they are efficiently transported through a well-designed ducting system. This seamless transfer ensures the particles are effectively managed and prepared for the next phase. Filtration/Evacuation Upon entering the ducting system, the captured dust can be directed externally or channeled through a filtration system. This approach allows for energy and financial savings, as the filtered dust can be recycled back into the facility, promoting a more sustainable and cost-effective operation. By meticulously addressing each phase, we prioritize safety, minimize environmental impact, and optimize overall performance. ##### Regulations for Dust Control in the Pharmaceutical and Nutraceutical Industries The pharmaceutical and nutraceutical industries are subject to stringent regulations covering all stages of the production process, from sanitation to packaging. The relevant regulations for dust control primarily fall into two categories: nuisance dusts and hazardous chemicals. Pharmaceutical and nutraceutical manufacturers must also adhere to OSHA and NFPA standards for combustible dusts. ##### Considerations for Selecting a Dust Control Solution in the Pharmaceutical and Nutraceutical Industry Engineers designing dust control solutions for pharmaceutical and nutraceutical dusts must take several factors into account, including: - Human health hazards associated with the dust: Does it contain an API? What is the Permissible Exposure Limit (PEL) for the dust? - Physical characteristics of the dust: How much dust is produced? Is the process contained within a hood or cabinet, or is it more open? - Combustibility of the dust: What are the combustion risks in the production environment? - Moisture level of the dust: Are water vapor or solvents present in the air? - The presence of dangerous chemical vapors, gases, or volatile organic compounds (VOCs) is produced along with the dust that requires control. At Sly, we offer a comprehensive range of top-quality dust collection equipment designed to safeguard pharmaceutical and nutraceutical processing operations from potentially combustible and hazardous dust. Our systems efficiently remove or recycle dust, promoting cleanliness and productivity. [Contact Sly](https://www.slyinc.com/contact/) today, and let us tailor a dust collection system to meet the unique needs of your operations. ##### Challenges in Dust Collection for the Pharmaceutical and Nutraceutical Industries The pharmaceutical and nutraceutical industries face numerous challenges regarding dust control. The specific risks and difficulties depend on the ingredients and processes involved. Hazardous/High-Potency Pharmaceutical Dust Manufacturing processes that generate dust with Active Pharmaceutical Ingredients (APIs) require stringent controls to protect workers from exposure. Many pharmaceutical dusts are toxic, even in small quantities. Any exposure to medications outside of doctor-prescribed channels presents health concerns for employees. Uncontrolled pharmaceutical dusts can cause significant side effects, drug interactions, or dangerous allergic reactions. High-potency drugs demand extra care to prevent inhalation or skin/mucus membrane exposure, even in small amounts. ### Combustible Dusts Many dusts generated in pharmaceutical and nutraceutical production are highly combustible, potentially leading to explosions when concentrated in the air or inside a dust collection machine. Special precautions must be taken during the collection of combustible dusts to minimize the risks of an explosion. ### Cross-Contamination Concerns Cross-contamination is a significant worry in the pharmaceutical and nutraceutical industries. Improperly controlled dust can escape enclosures and contaminate other production lines, posing sanitation and safety risks, including the potential for dangerous allergic reactions. ### Water Vapor / Solvents Certain pharmaceutical compounding and manufacturing processes create water vapor, solvent vapor, or moisture-laden dusts, posing unique challenges for dust collection. Hygroscopic dusts absorb moisture from the air, making them heavier and stickier. These dusts are harder to remove from filters and can cause excessive filter clogging. ### Nuisance Dust While dust created during the production of vitamins, protein powders, and other nutraceuticals may not be particularly toxic or dangerous, it is still crucial to prioritize dust control. Inhaling nutraceutical dust can lead to health problems such as lung irritation, asthma aggravation, and allergic reactions in susceptible employees. Uncontrolled dust of any type also has implications for housekeeping and sanitation. ##### Dust Generation in Pharmaceutical and Nutraceutical Production Processes The production of solid dosage forms in the pharmaceutical and nutraceutical industry involves various processes, each posing its own concerns regarding dust generation. Some of these processes include: - Tablet pressing - Capsule Filling - Powder batch mixing and milling - Wet and dry granulation - Pelletizing and speronization - Fluidized bed processes - Drying processes - Weighing and packaging It is crucial to address and mitigate dust creation in these processes to ensure the safety and quality of the products. ![](https://www.slyinc.com/wp-content/uploads/2024/08/AdobeStock_271269455.jpg "AdobeStock_271269455 | Sly Air Pollution Control") ###### Featured Resources [![](https://www.slyinc.com/wp-content/uploads/2024/08/SLY_dust-flyer.png "SLY_dust-flyer | Sly Air Pollution Control")](https://www.slyinc.com/blog/which-dry-dust-collector-is-best-for-my-application/) #### Which Dry Dust Collector is Best for My Application? You need a dust collector. The question is, which one? Only by picking the right kind of dust collector and customizing it to fit your needs can you maximize your system’s performance and dust collection efficiency while extending the life of your collector. [Read More](https://www.slyinc.com/blog/which-dry-dust-collector-is-best-for-my-application/) [![](https://www.slyinc.com/wp-content/uploads/2024/08/img-cartridge-2.png "img-cartridge | Sly Air Pollution Control")](https://www.slyinc.com/blog/cleaning-up-with-cartridge-filters-dust-collector-filter-cleaning/) #### Cleaning Up with Cartridge Filters: Dust Collector Filter Cleaning For indoor dry dust collector installations, cartridge dust collectors are often the best option for applications where the dust is dry and can flow freely, such as in chemical processing, minerals, blasting, welding, plasma cutting, dry powder handling, and metal finishing. But cartridge filters, just like baghouse filters, demand regular maintenance to provide continuing filtration efficiency. [Read More](https://www.slyinc.com/blog/cleaning-up-with-cartridge-filters-dust-collector-filter-cleaning/) --- ### [SHOP](https://www.slyinc.com/shop/) **Published:** July 9, 2024 **Author:** p1ws **Content:** # Shop --- ### [SlyMax](https://www.slyinc.com/products/dry-dust-collector-filter-bags/slymax/) **Published:** September 11, 2024 **Author:** p1ws **Content:** ![filter-bags-dust-collectors](https://www.slyinc.com/wp-content/uploads/2024/11/filter-bags-dust-collectors.jpg "filter-bags-dust-collectors | Sly Air Pollution Control") # SlyMax **SlyMax is a True Duo-Denier Felt**. ## Benefits of SlyMax Duo-Density Polyester Felt --- If you need a better efficiency than the standard 16 oz. Polyester will provide, but we don’t need the ultra-high efficiency of SlyHe (High Efficiency) or a PTFE membrane bag (SlyTex). Try our 16 or 18-oz. /yd2 duo-density polyester felt (SlyMax). You may reach the efficiency you need, and not have to spend a lot more on your filters. SlyMax is a true duo-denier felt with a finer denier fiber blend on the surface or collection side of the felt and a larger denier fiber on the inside. The two different-sized fibers are separated and supported by a scrim in the middle, unlike many of our competitor’s unsupported felts, which are produced in a single process that makes the fibers a homogeneous blend. - The SlyMax has a scrim support, which provides dimensional stability, and a densified central core, which improves filtration efficiency by minimizing dust migration through the felt. - SlyMax duo-density polyester is a true 16 oz. /yd2 weight felt versus the majority of commodity unsupported felts, which are actually targeted and manufactured to be 15.5 oz./yd2 or even 15 oz./yd2 in weight. ### SlyMax (16DDPE) bags vs. commodity felt bags (16SIPE) | | SlyMax 16oz Singed Polyester | 16oz Singed Polyester | |---|---|---| | **Weight** | 16oz./yd2 Scrim Supported | 16 oz./yd2 | | **Design** | 3.0 oz./yd2 min. Spun Polyester | No Scrim | | **Fiber Blend** | Dust Side: 50% – 1.50 dpf / 50% 2.25 dpf Back Side: 100% – 2.25 dpf | 1000% – 2.25 dpf (nominal) | | **Thickness** | 0.060″ – 0.085″ | 0.070″ – 0.080″ | ![fabric guide thumbnail](https://www.slyinc.com/wp-content/uploads/2024/12/fabric-guide-thumbnail.jpg "fabric-guide-thumbnail | Sly Air Pollution Control") Download our **Fabric Filter Properties Guide** to compare fabric characteristics to choose the best for your application. [Download](https://www.slyinc.com/wp-content/uploads/2024/12/Properties-of-Filtration-Fabrics-12-24.pdf) ![chemical](https://www.slyinc.com/wp-content/uploads/2024/12/chemical-thumbnail.jpg "chemical-thumbnail | Sly Air Pollution Control") Download our **Chemical Compatibility Guide** to compare fabric choice suitability for different chemicals. [Download](https://www.slyinc.com/wp-content/uploads/2024/12/Chemical-Compatibility-Fabric-Guide-1224.pdf) SLYMAX OPTIONS --- **Available Finishes for SlyMax:** - Singed (SI) **Available Weights for SlyMax:** - 16 oz./yd2 - 18 oz./yd2 [Types of Finishes](https://www.slyinc.com/products/dry-dust-collector-filter-bags/filter-bag-finishes/) The information provided on this website is intended as a guide for filter bag applications. SLY, LLC. makes no guarantee about the performance or results you can expect from the application of this information unless provided in writing from our staff. Need Help Selecting Filter Media? [Ask The Experts](/contact) --- ### [Teflon (TX)](https://www.slyinc.com/products/dry-dust-collector-filter-bags/teflon-tx/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![filter-bags-dust-collectors](https://www.slyinc.com/wp-content/uploads/2024/11/filter-bags-dust-collectors.jpg "filter-bags-dust-collectors | Sly Air Pollution Control") # Teflon® (TX) **Available in Both a Woven and a Felt Finished Product**. ## Teflon® (PTFE) Filter Bag Applications and Properties --- The information provided on this website is intended as a guide for filter bag applications. SLY, LLC. makes no guarantee about the performance or results you can expect from the application of this information unless provided in writing from our staff. **Teflon®** (Fluorocarbon fiber/Polytetrafluoroethylene aka PTFE). The normal maximum continuous operating temperature is 500°F. Generally used for severe chemical environments at high temperatures. Common applications include coal-fired power plants, cement production, and steel foundries. Chemical resistance is excellent, and abrasion resistance is generally superior to protein fibers but not as good as most synthetics. Teflon® is extremely expensive and is typically used after everything else has failed. Teflon® is available in both woven and felt-finished products. This media has poor flex abrasion qualities and requires a 20 vertical wire minimum support cage when used in tubular bag form. Common brand of PTFE include **Gore-Tex®** and **Tetratex®**. ![fabric guide thumbnail](https://www.slyinc.com/wp-content/uploads/2024/12/fabric-guide-thumbnail.jpg "fabric-guide-thumbnail | Sly Air Pollution Control") Download our **Fabric Filter Properties Guide** to compare fabric characteristics to choose the best for your application. [Download](https://www.slyinc.com/wp-content/uploads/2024/12/Properties-of-Filtration-Fabrics-12-24.pdf) ![chemical](https://www.slyinc.com/wp-content/uploads/2024/12/chemical-thumbnail.jpg "chemical-thumbnail | Sly Air Pollution Control") Download our **Chemical Compatibility Guide** to compare fabric choice suitability for different chemicals. [Download](https://www.slyinc.com/wp-content/uploads/2024/12/Chemical-Compatibility-Fabric-Guide-1224.pdf) TEFLON® OPTIONS --- **Available Finishes for Teflon®:** - Plain (PL) - SlyHE (High efficiency) - Glazed (GL) **Available Weights for Teflon®:** - 18 oz./yd2 - 21 oz./yd2 [Types of Finishes](https://www.slyinc.com/products/dry-dust-collector-filter-bags/filter-bag-finishes/) ### Teflon® Common Finishes **PTFE Membrane** (TX-XP) – For extreme application, the PTFE filter bag’s efficiency and cake release is further improved with the addition of a thin membrane of PTFE applied to the felt. A PTFE filter with a PTFE membrane gives maximum emissions protection. **Glazed** (GLTX) – This process involves running the felt through two heated rollers to melt back the loose fiber ends improving the cake release. The process can also compress the felt to smooth the surface, further improving the cake release. The information provided on this website is intended as a guide for filter bag applications. SLY, LLC. makes no guarantee about the performance or results you can expect from the application of this information unless provided in writing from our staff. Need Help Selecting Filter Media? [Ask The Experts](/contact) --- ### [PPS (Polyphenylene Sulfide)](https://www.slyinc.com/products/dry-dust-collector-filter-bags/pps-polyphenylene-sulfide/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![filter-bags-dust-collectors](https://www.slyinc.com/wp-content/uploads/2024/11/filter-bags-dust-collectors.jpg "filter-bags-dust-collectors | Sly Air Pollution Control") # PPS (Polyphenylene Sulfide) **Suited for Applications Where Emissions Standards Are Tight.** ## PPS: High-Performance Material for Industrial Applications --- **PPS** (polyphenylene sulfide) – Normal maximum continuous operating temperature is 375°F. Common applications include coal-fired boilers, incinerators, fluidized bed systems, cement mills, oil and gas firings, asphalt plants, and pulverized coal injection systems. Ryton® has excellent resistance to both acids and alkalis. The media also can operate effectively on applications with O2 content up to 9%. Ryton® works well in high moisture content applications and where dew point crossings are common. This media is suited for applications where emissions standards are tight. Common brand of PPS include **Ryton®** and **Procon®**. ![fabric guide thumbnail](https://www.slyinc.com/wp-content/uploads/2024/12/fabric-guide-thumbnail.jpg "fabric-guide-thumbnail | Sly Air Pollution Control") Download our **Fabric Filter Properties Guide** to compare fabric characteristics to choose the best for your application. [Download](https://www.slyinc.com/wp-content/uploads/2024/12/Properties-of-Filtration-Fabrics-12-24.pdf) ![chemical](https://www.slyinc.com/wp-content/uploads/2024/12/chemical-thumbnail.jpg "chemical-thumbnail | Sly Air Pollution Control") Download our **Chemical Compatibility Guide** to compare fabric choice suitability for different chemicals. [Download](https://www.slyinc.com/wp-content/uploads/2024/12/Chemical-Compatibility-Fabric-Guide-1224.pdf) PPS OPTIONS --- **Available Finishes for PPS:** - Fire Retardant (FR), PTFE membrane (XP) - Singed (SI), SlyHE (High efficiency), Glazed (GL) - ST-01 (Oleophobic), ST-04 (Code 9), SlyCharge (EX) - ST-08 (double dip ST-01), ST-09, ST-10 **Available Weights for PPS:** - 16 oz./yd2 - 18 oz./yd2 [Types of Finishes](https://www.slyinc.com/products/dry-dust-collector-filter-bags/filter-bag-finishes/) ### PPS Common Finishes **PTFE Membrane** (TX-XP) – For extreme application, the PTFE filter bag’s efficiency and cake release are further improved with a thin membrane of PTFE applied to the felt. A PTFE filter with a PTFE membrane gives maximum emissions protection. **Singed** (SIPPS) – The felt is singed on the dust cake side for improved cake release. The process involves exposing the surface fibers to an open flame that melts back the loose fiber ends to which dust particles could adhere. **Glazed** (GLPPS) -This process involves running the felt through two heated rollers to melt back the loose fiber ends, improving the cake release. The process can also compress the felt to smooth the surface, further improving the cake release. **SlyTech-01** (ST-01) Oleophobic -water and oil repellent finish. SlyTech-01 is a complete PTFE bath that provides an excellent cake-release finish to each fiber. This finish is cheaper and more durable than a membrane that can be easily scratched. The information provided on this website is intended as a guide for filter bag applications. SLY, LLC. makes no guarantee about the performance or results you can expect from the application of this information unless provided in writing from our staff. Need Help Selecting Filter Media? [Ask The Experts](/contact) --- ### [P-84 (PM)](https://www.slyinc.com/products/dry-dust-collector-filter-bags/p-84-pm/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![filter-bags-dust-collectors](https://www.slyinc.com/wp-content/uploads/2024/11/filter-bags-dust-collectors.jpg "filter-bags-dust-collectors | Sly Air Pollution Control") # P-84 (PM) **Helps Reduce Differential Pressure Across the Baghouse.** ## P-84® Filter Bag Guide and Specifications --- **P-84®** (Felt) – Normal continuous operating temperature is 500°F. Typical applications include smelters, dryers, coal-fired boilers, incinerators, kilns, and calciners. P-84® is non-flammable and not hygroscopic. This felt offers extended bag life in low pH applications and helps reduce differential pressure across the baghouse. P-84® operates well in high-temperature applications against acid attacks and is resistant to flex abrasion (unlike Fiberglass). Alkaline should be avoided at high temperatures with using P-84. ![fabric guide thumbnail](https://www.slyinc.com/wp-content/uploads/2024/12/fabric-guide-thumbnail.jpg "fabric-guide-thumbnail | Sly Air Pollution Control") Download our **Fabric Filter Properties Guide** to compare fabric characteristics to choose the best for your application. [Download](https://www.slyinc.com/wp-content/uploads/2024/12/Properties-of-Filtration-Fabrics-12-24.pdf) ![chemical](https://www.slyinc.com/wp-content/uploads/2024/12/chemical-thumbnail.jpg "chemical-thumbnail | Sly Air Pollution Control") Download our **Chemical Compatibility Guide** to compare fabric choice suitability for different chemicals. [Download](https://www.slyinc.com/wp-content/uploads/2024/12/Chemical-Compatibility-Fabric-Guide-1224.pdf) P-84® OPTIONS --- **Available Finishes for P-84**®**:** - Fire Retardant (FR), PTFE membrane (XP) - Singed (SI), SlyHE (High efficiency), Glazed (GL) - ST-01 (Oleophobic), ST-04 (Code 9) - ST-08 (double dip ST-01), ST-09, ST-10 **Available Weights for P-84**®**:** - 14 oz./yd2 - 16 oz./yd2 - 18 oz./yd2 [Types of Finishes](https://www.slyinc.com/products/dry-dust-collector-filter-bags/filter-bag-finishes/) ### P-84® Common Finishes **PTFE Membrane** (TX-XP) – For extreme application, the PTFE filter bag’s efficiency and cake release are further improved with a thin membrane of PTFE applied to the felt. A PTFE filter with a PTFE membrane gives maximum emissions protection. **Singed** (SIPP) – The felt is singed on the dust cake side for improved cake release. The process involves exposing the surface fibers to an open flame that melts back the loose fiber ends to which dust particles could adhere. **Glazed** (GLPP) – This process involves running the felt through two heated rollers to melt back the loose fiber ends, improving the cake release. The process can also compress the felt to smooth the surface, improving the cake release. **SlyTech-01** (ST-01) – Oleophobic -water and oil repellent finish. SlyTech-01 is a complete PTFE bath that provides an excellent cake-release finish to each fiber. This finish is cheaper and more durable than a membrane that can be easily scratched. The information provided on this website is intended as a guide for filter bag applications. SLY, LLC. makes no guarantee about the performance or results you can expect from the application of this information unless provided in writing from our staff. Need Help Selecting Filter Media? [Ask The Experts](/contact) --- ### [Fiberglass (FG)](https://www.slyinc.com/products/dry-dust-collector-filter-bags/fiberglass-fg/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![filter-bags-dust-collectors](https://www.slyinc.com/wp-content/uploads/2024/11/filter-bags-dust-collectors.jpg "filter-bags-dust-collectors | Sly Air Pollution Control") # Fiberglass (FG) **Fiberglass Has Excellent Resistance to Most Acids.** ## Fiberglass Filter Bag Applications and Properties --- **Fiberglass** (Woven) – Normal continuous operating temperature is 500°F. General applications include cement kilns, high-temperature dryers, carbon black reactors, power plants, and electric furnaces. Fiberglass has excellent resistance to most acids, but is attacked by hydrofluoric acid. Not recommended where bases and salts such as chlorides, bromides, and cyanides are present. This media has poor flex abrasion qualities and requires a 20 vertical wire minimum support cage when used in tubular filter bag form. ![fabric guide thumbnail](https://www.slyinc.com/wp-content/uploads/2024/12/fabric-guide-thumbnail.jpg "fabric-guide-thumbnail | Sly Air Pollution Control") Download our **Fabric Filter Properties Guide** to compare fabric characteristics to choose the best for your application. [Download](https://www.slyinc.com/wp-content/uploads/2024/12/Properties-of-Filtration-Fabrics-12-24.pdf) ![chemical](https://www.slyinc.com/wp-content/uploads/2024/12/chemical-thumbnail.jpg "chemical-thumbnail | Sly Air Pollution Control") Download our **Chemical Compatibility Guide** to compare fabric choice suitability for different chemicals. [Download](https://www.slyinc.com/wp-content/uploads/2024/12/Chemical-Compatibility-Fabric-Guide-1224.pdf) FIBERGLASS OPTIONS --- **Available Finishes for Fiberglass:** - Plain (PL) - PTFE membrane (XP) - PTFE bath - Acid resistant treatment **Available Weights for Fiberglass:** - 16.8 oz./yd2 - 22 oz./yd2 [Types of Finishes](https://www.slyinc.com/products/dry-dust-collector-filter-bags/filter-bag-finishes/) The information provided on this website is intended as a guide for filter bag applications. SLY, LLC. makes no guarantee about the performance or results you can expect from the application of this information unless provided in writing from our staff. Need Help Selecting Filter Media? [Ask The Experts](/contact) --- ### [Eductor Wet Scrubber Application Examples](https://www.slyinc.com/products/industrial-wet-scrubbers/eductor-wet-scrubber/eductor-wet-scrubber-application-examples/) **Published:** September 3, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/09/pharmaceutical-processing-dust-control-1.jpg "pharmaceutical-processing-dust-control (1) | Sly Air Pollution Control") # Eductor Wet Scrubber Application Examples ## Eductor Scrubber Removes Sticky Resins and Vapors from Heated Kettles --- An eductor venturi scrubber has been successfully applied at this chemical manufacturer to remove resins and vapors from its manufacturing process. Recirculated water is introduced into the eductor vessel at 100 PSIG, which, by travelling through a venturi throat, induces an 800 ACFM process gas flow. Gas/liquid contact occurs in the throat of the venturi where the contaminant gas or particulate matter is scrubbed. Leaving the throat, the gas is allowed to expand in the venturi’s diverging section prior to entering the separator tank. Once in the separator tank, the gas stream makes several sharp changes in direction, causing entrained water droplets to impinge on the tank wall or the liquid surface. The scrubbed gas then exits the separator through a mist eliminator pad and is exhausted to the atmosphere. Each eductor scrubber is custom-engineered to meet specific performance requirements. Design flexibility makes the eductor very versatile. It is easily staged with other collection devices such as impingement plate scrubbers or packed towers. Where extremely high efficiencies are required, eductor scrubbers can be arranged in series. Eductor scrubbers and separation tanks are available to handle gas flows up to 10000 CFM. The high liquid flow rate makes the Sly eductor particularly appropriate for the collection of sticky and/or gummy particulate as well as gases which decompose upon contact with water. ![](https://www.slyinc.com/wp-content/uploads/2024/08/Render-Eductor.PackedTower-FRP-1.png "Render-Eductor.PackedTower-FRP-1 | Sly Air Pollution Control") ##### Eductor Wet Scrubbers ![](https://www.slyinc.com/wp-content/uploads/2024/12/Eductor-Wet-Scrubbers-Sly-300x300.jpg) Eductor for Lab Testing ![](https://www.slyinc.com/wp-content/uploads/2024/09/wet-eductor.jpg) Eductor Wet Scrubber ![](https://www.slyinc.com/wp-content/uploads/2024/12/redoring-eductor-scrubber-300x300.jpg) Eductor Wet Scrubber Rendering ![]() Eductor for Lab Testing ![]() Eductor Wet Scrubber ![]() Eductor Wet Scrubber Rendering #### Request a Quote [Contact Us](https://www.slyinc.com/contact/request-a-quote/) ## Eductor Venturi/Packed Tower Combination Removes Particulate and Absorbs Alcohol Vapors A combined eductor/packed tower collector that removes solid particulate and absorbs alcohol has been successfully employed by a major specialty chemical producer. The equipment vents a variety of process equipment. The eductor venturi induces the gas flow using a high pressure and volume of recirculated water focused into the throat of the venturi. Particulate matter is removed in venturi. After the eductor, a packed tower scrubber with an extended packed section removes alcohol vapors by counter-current contact with a once through flow of fresh water. The equipment is skid-mounted, stainless steel construction, designed for 500 CFM. SLY, LLC. manufactures eductor scrubbers to handle gas flows up to 10,000 CFM. Packed towers are produced to handle flows to over 100,000 CFM. All equipment is custom-engineered to meet specific performance requirements and produced in Sly’s own plants. --- ### [Venturi Wet Scrubber Application Examples](https://www.slyinc.com/products/industrial-wet-scrubbers/venturi-wet-scrubber/venturi-wet-scrubber-application-examples/) **Published:** September 3, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/09/application-wet-furnance.jpg "application- wet-furnance | Sly Air Pollution Control") # Venturi Wet Scrubber Application Examples ## Venturi/Impinjet® Combination Scrubber Removes HCI & Particulate from Aluminum Refining Furnace Exhaust A combination Venturi scrubber / Impinjet® scrubber contains stack emissions to 99.999% efficiency from two aluminum furnaces and a small refining station at this aluminum plant. The scrubber system removes both hydrochloric acid vapors and particulate from the nitrogen gas streams vented from the furnaces. Acid vapors and particulates are evolved when salts are injected into the molten aluminum to clean and de-gasify it. The scrubber system receives hot gases, which may be as hot as 1650°F, from the furnaces and contacts the gas with atomized scrubbing solution in the Venturi. The Venturi removes the majority of the particulate and the acid gases. In addition, the gas stream temperature is lowered to approximately 120°F. The acidic scrubbing solution drains into tanks where it is neutralized. Most of the neutralized solution is recirculated back to the Venturi scrubber, however, a small portion is discharged continuously to an effluent treatment plant. Coupled to the Venturi is a Sly Impinjet gas scrubber. It acts as a final polishing stage for acid gas removal. The scrubbed flue gases are then vented to the atmosphere through a tall stack. [Request a Quote](https://www.slyinc.com/contact/request-a-quote/) --- ### [Impinjet® Wet Scrubbers Application Examples](https://www.slyinc.com/products/industrial-wet-scrubbers/impinjet-wet-scrubber/impinjet-wet-scrubbers-application-examples/) **Published:** September 3, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/09/application-gas-stream.jpg "application- gas stream | Sly Air Pollution Control") # Impinjet® Wet Scrubbers Application Examples ## Scrubber Removes Chromic Acid from Gas Stream An Impinjet® gas scrubber has been successfully used to remove chromic acid from the process gas stream by this manufacturer of chemicals for the plating industry. The scrubber, part of a system engineered by SLY, LLC., handles 10,000 CFM of air ventilated from various processes. Sly also provided an evaluation of the existing ventilation system and recommended improvements in ventilation design. The new scrubber replaced two existing air pollution control units which were inadequate. The tested efficiency of the Sly Impinjet scrubber exceeded code requirements. SLY, LLC. makes a full range of wet, dry and combination wet & dry collection systems designed to meet any air pollution code. The company offers complete system responsibility including start-up services, operator training and guaranteed results. A system can be configured employing a variety of technologies, both wet and dry, to meet any user’s specific requirements. ## Scrubber Washes Dirty Air Emitted from Chemical Plant Fine particulate is removed from chemical process exhaust air by a Sly Impinjet® wet gas scrubber at this chemical plant. Powders used in the production of chemical products are emitted during the venting of reactors. The scrubber “washes” the vented air to efficiently remove chemical particulate which could contaminate the ambient air outside the plant. The Sly Impinjet® features a unique perforated plate and impingement baffle design that creates positive intimate contact with minute droplets to thoroughly scrub even the dirtiest gas stream. It uses less water than other scrubbers and requires very little fresh makeup water. Low pressure drop across the scrubber cuts power consumption. Scrubbers are available in 740 to 250,000 CFM capacities for a wide variety of industrial applications. ## Scrubber Cleans and Absorbs Organic Vapors and Particulate **Skidded Package System Makes Installation Easy** An Impinjet® wet scrubber is used at this company to clean exhaust gases from its pharmaceutical process. The Impinjet scrubber was provided as a skidded package system by its maker, SLY, LLC. 4,000 CFM of gas is handled by this wet gas scrubber. A proven impingement design creates turbulent conditions to insure intimate contact between particulates and organic vapors for thorough removal of pollutants. The equipment was delivered as a skid-mounted package to reduce on-site installation work. Sly makes a full range of wet, dry and combination wet & dry collection systems designed to meet any air pollution code. The company offers complete system responsibility including start-up services, operator training and guaranteed results. A system can be engineered from a variety of technologies to meet MACT requirements. [Request a Quote](https://www.slyinc.com/contact/request-a-quote/) --- ### [CTR/CBR – Cylindrical Pulse Jet Collectors](https://www.slyinc.com/products/dust-collectors/tubejet-baghouse-dust-collectors/ctr-cbr-cylindrical-pulse-jet-collectors/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/09/ctr-hero.jpg "ctr hero | Sly Air Pollution Control") # CTR/CBR – Cylindrical Pulse Jet Collectors **Top Bag or Side Bag Removal Designs.** ## Cylindrical Series TubeJet® --- Sly’s Cylindrical TubeJet® Pulse-Cleaned Dust Collectors are available in a top bag removal design (CTR) or a side bag removal design (CBR). These cylinder style units are also available in high pressure and vacuum designs. Specifications for CTR and CBR dust collector and filter receivers are as follows: - 50-25,000+ ACFM Capacities - 20” w.g. to 17” Hg design pressures - Full vacuum - ASME code stamped housings - Construction to 500°F design temperature ![tubejet dust collector](https://www.slyinc.com/wp-content/uploads/2024/10/CTR-TubeJet-Dust-Collector.jpg "CTR-TubeJet-Dust-Collector | Sly Air Pollution Control") #### Request a Quote [Contact Us](https://www.slyinc.com/contact/request-a-quote/) ### Features & *Benefits* - Cylindrical design features no corners for superior cleanability - Round walls eliminate cold spots and condensation in high heat applications - Conical hopper promotes easy discharge of collected dusts - Radial low velocity dual stage inlet with diffuser decreases turbulence - 12 vertical wire cage provides extra support, minimizing bag wear - Adjustable solid state timer for fine tuning cleaning system - Varying pulse valve sizes matched to filter bags (length, number of bags) provides optimum pulse cleaning - Wide range of bag fabrics and finishes for high filtration efficiency Options --- - On-demand cleaning to reduce compressed air consumption - Cyclonic inlets handles high dust loads - Supports designed to ASCE-7 - Access platforms, straight or perimeter - Blowers - Discharge valves - Configurable hopper slope/discharge, surge hoppers - 6″ nominal diameter bag diameter and 4-1/2″ diameter for light bulk density applications - Explosion protection, sprinklers - ANSI flanges (150 or 300 lb) - Carbon, stainless or alloy construction - Pleated bag designs available ### CTR Top Bag Removal ![Sly-CTR-rendering](https://www.slyinc.com/wp-content/uploads/2024/11/Sly-CTR-rendering.jpg "Sly-CTR-rendering | Sly Air Pollution Control") Filter bag changes require no tools with Sly pulse jet top bag removal collectors. The TubeJet’s unique tool-less pulse pipe connection and rugged snap ring bag assembly reduces downtime and provides easy maintenance. Top bag removal options include standard lift-off head, davit arm, walk-in plenum, and top hatches. ### CBR Side Bag Removal ![Sly-CBR-rendering](https://www.slyinc.com/wp-content/uploads/2024/11/Sly-CBR-rendering.jpg "Sly-CBR-rendering | Sly Air Pollution Control") When headroom is tight, side bag removal dust collectors can fit where top removal units can’t. Side door provides access for quick bag change-outs. Side bag removal options include the standard options listed above and man grids. For a complete listing of standard features and custom options [view our pdf brochure](https://www.slyinc.com/wp-content/uploads/2015/03/CBR-CTR-SlyTubeJet.pdf). ##### TubeJet: Cylindrical Series ![](https://www.slyinc.com/wp-content/uploads/2024/12/cbr-hopper-1.jpg) CBR Hopper ![](https://www.slyinc.com/wp-content/uploads/2024/11/CTR-with-surge-tank-design-266x300.jpg) CTR with Surge Tank ![](https://www.slyinc.com/wp-content/uploads/2024/12/cbr-1.jpg) CBR with Spout ![]() CBR Hopper ![]() CTR with Surge Tank ![]() CBR with Spout ##### Downloads --- - [CTR-700-1- CTR with Dished Head & Radial Inlet](https://www.slyinc.com/wp-content/uploads/2024/09/CTR-700-1-CTR-with-Dished-Head-Radial-Inlet.pdf) - [CTR-700-2- CTR with Dished Head and Tangential Inlet](https://www.slyinc.com/wp-content/uploads/2024/09/CTR-700-2-CTR-with-Dished-Head-and-Tangential-Inlet.pdf) - [CTW-700-3- CTR with Walk-In Plenum](https://www.slyinc.com/wp-content/uploads/2024/09/CTW-700-3-CTR-with-Walk-In-Plenum.pdf) - [CTR-FT- CTR with Flat Head and Radial Inlet](https://www.slyinc.com/wp-content/uploads/2024/09/CTR-FT-CTR-with-Flat-Head-and-Radial-Inlet.pdf) - [CBR-FT- CBR with Flat Top & Radial Inlet](https://www.slyinc.com/wp-content/uploads/2024/09/CBR-FT-CBR-with-Flat-Top-Radial-Inlet.pdf) - [CBR-800-1- CBR with Dished Head & Radial Inlet](https://www.slyinc.com/wp-content/uploads/2024/09/CBR-800-1-CBR-with-Dished-Head-Radial-Inlet.pdf) - [CBR-800-2- CBR with Dished Head and Tangential Inlet](https://www.slyinc.com/wp-content/uploads/2024/09/CBR-800-2-CBR-with-Dished-Head-and-Tangential-Inlet.pdf) --- ### [Metalworking](https://www.slyinc.com/industries/metalworking/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/09/metal-working-production.jpg "metal-working-production | Sly Air Pollution Control") # Metalworking **Our Technicians Leverage Over 150 Years of Industry Expertise**. ## Dust Collection for Metalworking --- Managing dust and gas collection in metalworking poses challenges for fabricators and manufacturers, with far-reaching implications for worker health, facility safety, and equipment performance. Whether engaged in manual metal cutting or utilizing CNC machines for high-speed plasma or laser cutting, prioritizing dust and gas control is paramount. ### Wet Scrubber Equipment for Metalworking [![](https://www.slyinc.com/wp-content/uploads/2025/01/wet-particulate-collection-system.jpg) Venturi Wet Scrubbers](https://www.slyinc.com/products/industrial-wet-scrubbers/venturi-wet-scrubber/) [![](https://www.slyinc.com/wp-content/uploads/2025/01/slyclone-pre-filter-collector.jpg) Cyclone Dust Collectors](https://www.slyinc.com/products/dust-collectors/cyclone-dust-collector/) [![](https://www.slyinc.com/wp-content/uploads/2025/01/metal-dust-loading-spout.jpg) Loading Spouts](https://www.slyinc.com/products/industrial-bulk-solids-loading-spouts/) ![](https://www.slyinc.com/wp-content/uploads/2024/07/Air-Pollution-Control-Gradient.png "Air-Pollution-Control-Gradient | Sly Air Pollution Control") --- Sly offers a full range of baghouse designs and media choices to solve the toughest pollution control problems, including high temperatures pressures, and corrosives. Our technicians can draw upon 150 years of industry knowledge when designing and building proprietary systems for companies of all types. Sly offers a complete line of wet scrubber equipment to keep chemical manufacturing clean from potentially combustible, hazardous gases in the air. The Sly Venturi Scrubber efficiently collects fine particulate and mists. [Contact Sly](/contact) ### Dust Collection Solutions for Metal Cutting Metal cutting encompasses various techniques and tools used to shape, resize, and separate metals. The choice of metal cutting method depends on factors such as the material, desired finish, complexity of the design, and production volume. Here are some common methods of metal cutting: - Mechanical cutting: This includes shearing, sawing, or milling. - Thermal cutting: Options include oxy-fuel or plasma cutting. - Laser cutting: Utilizes fiber or CO2 lasers. - Waterjet cutting: Makes use of high-pressure water, sometimes mixed with abrasives. - Spark machining/electrical discharge machining (EDM): Employed to produce intricate shapes. - Ultrasonic cutting: Utilizes ultrasonic vibrations to cut through materials. By optimizing the selection and application of these metal-cutting methods, you can achieve efficient and precise results while effectively managing dust collection. ### Metalworking Dust Hazards ##### Managing Metal Dust: Ensuring Safety and Preventing Fire and Explosions The combustible nature of metal dust adds an additional layer of concern when managing dust collection in the metal industry. To address this challenge, [both wet and dry dust collection ](https://www.slyinc.com/dust-collectors/)methods are suitable. Wet dust collection involves using water to capture and suppress dust particles, while dry dust collection utilizes filters or mechanical means to capture and remove dust. Implementing an effective dust collection system is critical for worker health and safety and for preventing the risk of fire and explosions in metalworking environments. ##### The Hidden Dangers of Metalworking Dust: Protecting Your Health in the Workplace Metalworking dust poses various risks in the workplace, particularly when fine particles are inhaled during cutting processes. This can lead to respiratory problems and chronic diseases in the long run. Additionally, certain metals like lead, cadmium, and chromium-containing metals can be toxic and result in a range of health issues, including metal fume fever, cancer, and neurological or reproductive effects. Contact with specific metal dusts can also cause skin irritation, allergies, or chemical burns. ![](https://www.slyinc.com/wp-content/uploads/2025/01/metalworking-dust-sparks.jpg "metalworking-dust-sparks | Sly Air Pollution Control") ![](https://www.slyinc.com/wp-content/uploads/2025/01/fabircating-metals.jpg "fabircating-metals | Sly Air Pollution Control") ![](https://www.slyinc.com/wp-content/uploads/2025/01/welding-sparks-and-dusts.jpg "welding-sparks-and-dusts | Sly Air Pollution Control") ##### The Hidden Threat: How Uncontrolled Metal Dust Can Destroy Your Equipment Furthermore, uncontrolled metal dust can cause significant damage to equipment. Due to its conductive nature, it can wear down machinery components, reduce lifespan, and generate short circuits in electrical equipment. Dust accumulation can clog essential components such as filters and vents, impacting equipment efficiency. In the case of laser and plasma cutting, dust buildup inside CNC machines can damage optical sensors, distort the laser or plasma arc, or accelerate wear on moving parts. Dust settling on machine components or electronics can even lead to overheating. Addressing the hazards associated with uncontrolled metal-cutting dust requires implementing proper measures to mitigate health risks and prevent equipment damage. It is crucial to have effective dust collection solutions in place. At Sly, we offer a comprehensive range of top-quality dust collection equipment designed to safeguard metalworking processing operations from potentially combustible and hazardous dust. Our systems efficiently remove or recycle dust, promoting cleanliness and productivity. [Contact Sly today](https://www.slyinc.com/contact/), and let us tailor a dust collection system to meet the unique needs of your operations. ### Case Studies & White Papers ##### Pollution Protection Powerhouse: Fiberglass-Reinforced Plastic Wet Scrubbers Optimize Performance Companies that fail to comply with air quality regulations can face severe consequences including fines, legal action and reputational damage. Wet scrubbers, particularly those fabricated of fiberglass-reinforced plastic (FRP), offer an efficient and cost-effective solution for controlling industrial emissions. [Download Case Study](https://info.slyinc.com/wetscrubberfrpguide?_gl=1%2A1h4hoxk%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzEzMjQzNy4xNy4xLjE3MzcxMzI1NDIuMjMuMC4xMDM1OTgyMjc0) ###### Featured Resources [![venturi wet scrubber](https://www.slyinc.com/wp-content/uploads/2024/08/venturi-wet-scrubber-7.jpg "venturi-wet-scrubber | Sly Air Pollution Control")](https://www.slyinc.com/blog/3-common-reasons-to-use-wet-scrubbers/) #### 3 Common Reasons to Use Wet Scrubbers When it comes to air quality, it’s important to choose the best air pollution collection system for your specific application. Choosing the right system can mean the difference between a safe, productive work environment, and a plant shutdown. [Read More](https://www.slyinc.com/blog/3-common-reasons-to-use-wet-scrubbers/) --- ### [Lithium](https://www.slyinc.com/industries/lithium/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/09/lithium-processing-salt-flats.jpg "lithium-processing-salt-flats | Sly Air Pollution Control") # Lithium **Lithium Processors Can Count on Sly: With Confidence.** ## Light & Precious: Priorities in Lithium Dust Collection --- The recent surge of Lithium has been driven by the shift from fossil fuel vehicles to electric (EVs), and the increase of electronic devices for educational, recreational, industrial, and commercial purposes. These drivers are anticipated to contribute to lithium market growth for an estimated CAGR of 12% through the year 2030. Lithium is a mineral that is either mined or extracted from salt flat brine. Among its properties, its position on the periodic table and the size of lithium atoms make it an ideal material for battery production. The ion’s size and capabilities give lithium-ion batteries high voltage and charge storage per unit mass and volume. Lithium is utilized in a few industries, but is most frequently used in battery manufacturers. ![](https://www.slyinc.com/wp-content/uploads/2024/06/lithium-processing-air-pollution-control.png "lithium-processing-air-pollution-control | Sly Air Pollution Control") Capture Every Micron of Lithium with proven Sly Dust Collection Systems [Download White Paper](https://info.slyinc.com/lithium-wp?_gl=1%2A1q9iuhe%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzEyMzE1Ni4xNi4xLjE3MzcxMjc1NzAuMjYuMC4yMzU0NTQxNjE.) ### Dust Collection Equipment for Lithium Processing [![](https://www.slyinc.com/wp-content/uploads/2025/01/CBR-cyclindrical-dust-collector-load-spout.jpg) CBR Pulse Jet Collectors](https://www.slyinc.com/products/dust-collectors/tubejet-baghouse-dust-collectors/ctr-cbr-cylindrical-pulse-jet-collectors/) [![](https://www.slyinc.com/wp-content/uploads/2025/01/packed-tower-industrial-scrubber.jpg) Packed Tower Scrubbers](https://www.slyinc.com/products/industrial-wet-scrubbers/packed-tower-wet-scrubber/) [![](https://www.slyinc.com/wp-content/uploads/2025/01/venturi-scrubber-lithium-mining-dust.jpg) Venturi Wet Scrubbers](https://www.slyinc.com/products/industrial-wet-scrubbers/venturi-wet-scrubber/) [![](https://www.slyinc.com/wp-content/uploads/2025/01/Dried-Product-Loading-Spouts.jpg) Loading Spouts](https://www.slyinc.com/products/industrial-bulk-solids-loading-spouts/) ![](https://www.slyinc.com/wp-content/uploads/2024/07/Air-Pollution-Control-Gradient.png "Air-Pollution-Control-Gradient | Sly Air Pollution Control") --- Sly offers a complete line of dust collection equipment to keep lithium processing operations clean from combustible, hazardous dust and remove or recycle it into production. Contact us to design, fabricate, and install a dust collection system tailored to your processing operations. [Contact Sly](/contact) Metal oxides in the dust can cause health problems during lithium mining and grinding. Proper lithium dust capture recovers a precious resource and improves air quality within processing plants. Dust collection systems are employed throughout the process stream, from initial mining through grinding and milling. This collects nuisance dust or recovers valuable resources such as lithium carbonate/hydroxide particles destined for industrial use. Sly LLC offers specialized designs that consider factors such as air-to-cloth ratio vs. interstitial velocity; media selection based on characteristics like moisture levels or micron sizes, or timing for cleaning cycles. In addition, Sly takes security seriously when designing proprietary processes for customers processing lithium for battery manufacturers. Lithium processing operations can count on the experienced engineers at Sly, who deliver previous experience working with lithium dust and a reputation for service and quality. ![](https://www.slyinc.com/wp-content/uploads/2024/11/lithium-salt-mine.jpg "lithium-salt-mine | Sly Air Pollution Control") ![](https://www.slyinc.com/wp-content/uploads/2024/10/lithium-battery-industry-thumb.jpg "lithium-battery-industry-thumb | Sly Air Pollution Control") Since lithium is metal, it generates very lightweight, but also highly combustible dust. Specific regulations, such as standards issued by the National Fire Protection Association, require facilities to test dust for its explosion potential (Kst value). **Some factors taken into consideration when designing:** - Volume for sizing - Inlet location and placement (considering the relatively light bulk density of lithium) - Media and bag type - Explosion-proof venting and electrical systems - Voltage requirements based on installation location Lithium processors can count on Sly with confidence. We bring over 150 years of experience in the dust collection industry and more specifically, 20-plus years assisting with lithium processing dust collection. [**Contact us today**](https://www.slyinc.com/contact/) for a proprietary system design that can overcome your process challenges. Improve your process efficiencies and the air quality within your facility. ### Case Studies & White Papers ##### Pleated bags are NOT the same as Cartridges. It’s All In The Design. Another industry that emphasizes the recovery of valuable metallic dust particles. [Download Case Study](https://www.slyinc.com/resources/case-studies/pleated-bags-are-not-the-same-as-cartridges-its-all-in-the-design/) ###### Featured Resources [![](https://www.slyinc.com/wp-content/uploads/2024/08/lithiumprocessing-wp-1.webp "lithiumprocessing-wp-1 | Sly Air Pollution Control")](https://info.slyinc.com/lithium-wp?_gl=1%2A1q9iuhe%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzEyMzE1Ni4xNi4xLjE3MzcxMjc1NzAuMjYuMC4yMzU0NTQxNjE.) #### Capture Every Micron of Lithium with Sly LLC Dust Collection As lithium demand explodes, processors race to maintain supply and keep their competitive edge. The challenge is safe and effective capture of every particle of this valuable resource. Following the process from mining to milling, our new white paper explores the characteristics of lithium dust, the factors involved in system design to optimize its capture, and the types of custom modifications available from Sly LLC. [Read More](https://info.slyinc.com/lithium-wp?_gl=1%2A1q9iuhe%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzEyMzE1Ni4xNi4xLjE3MzcxMjc1NzAuMjYuMC4yMzU0NTQxNjE.) --- ### [Cement & Asphalt](https://www.slyinc.com/industries/cement-asphalt/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/09/cement-asphalt-processing-dust-capture.jpg "cement-asphalt-processing-dust-capture | Sly Air Pollution Control") # Cement & Asphalt **Our Solutions Address Various Pollutants, and Ensure You Have Cleaner and Safer Operations**. ## Dust Collection & Other Air Emission Solutions for Cement and Asphalt Plants in the Construction Industry --- Dust collection and air emission control solutions are essential for cement and asphalt plants to meet environmental regulations, protect worker health, and improve operational efficiency. These solutions address various pollutants, including dust, particulate matter, and gaseous emissions, ensuring cleaner and safer operations. ### Dust Collection Equipment for Cement & Asphalt [![](https://www.slyinc.com/wp-content/uploads/2025/01/baghouse-powder-bulk-solids-dust.jpg) STJ Tubejet Dry Dust Collectors](https://www.slyinc.com/products/dust-collectors/tubejet-baghouse-dust-collectors/) [![](https://www.slyinc.com/wp-content/uploads/2025/01/venturi-wet-scrubbers-external.jpg) Venturi Wet Scrubbers](https://www.slyinc.com/products/industrial-wet-scrubbers/venturi-wet-scrubber/) [![](https://www.slyinc.com/wp-content/uploads/2025/01/sly-spout-load-truck.jpg) Loading Spouts](https://www.slyinc.com/products/industrial-bulk-solids-loading-spouts/) ![](https://www.slyinc.com/wp-content/uploads/2024/07/Air-Pollution-Control-Gradient.png "Air-Pollution-Control-Gradient | Sly Air Pollution Control") --- We offer a complete line of dust collection equipment, including bag houses and media selection for the filters, wet scrubbers, cyclones, and loading spouts. Our technicians can draw upon industry knowledge gathered during our 150-year history of designing and building proprietary systems for companies of all types. Ensure your environment is safe when processing carbon black with a proven solution. [Contact Sly](/contact) ### Industry Challenges Asphalt plants, or asphalt pavement mixing facilities, are industrial operations that blend liquid asphalt binder with crushed rock, gravel, and sand to create pavement. A cement plant is an industrial facility specifically designed for cement production. The primary function of a cement plant is to transform raw materials, such as limestone and clay, into cement through a series of chemical and mechanical processes. The emissions from both of these plants can pose risks to human health and the environment. These include volatile organic compounds, particulate matter, sulfur dioxide, and other constituents, which can all lead to respiratory and health concerns. Cement and asphalt plants must use proper emission control systems to remedy these concerns. These systems must efficiently collect dust or other pollutants while seamlessly integrating with the existing production infrastructure. ![](https://www.slyinc.com/wp-content/uploads/2024/09/Cement-1024x576.jpg "Cement | Sly Air Pollution Control") ### Dust Collection Solutions Sly specializes in tailored dust collection solutions for cement and asphalt plants. Our systems help to enhance operational efficiency, reduce downtime, and ensure regulatory compliance. Effective dust collection systems help mitigate these issues by capturing and controlling dust emissions. Here are some of the key dust collection solutions used in the construction industry: #### Baghouse Dust Collectors --- Baghouse dust collectors are among cement and asphalt plants’ most common and efficient systems. They work by filtering dust-laden air through fabric filter bags. The dust particles are trapped on the surface of the bags while clean air passes through. Advantages High efficiency (up to 99.9%), can handle large volumes of dust, and suitable for a wide range of particle sizes. Applications Cement kilns, clinker coolers, grinding mills, and material handling systems. #### Cartridge Dust Collectors --- Cartridge dust collectors use cylindrical or oval-shaped filter elements (cartridges) instead of bags. These systems are suitable for capturing fine and light dust particles. Advantages Compact design, high filtration efficiency, easy maintenance, and quick filter replacement. Applications Raw material processing areas, finish mills, and smaller dust-producing operations within the plants. #### Cyclone Dust Collectors --- Cyclone dust collectors use centrifugal force to separate dust particles from the air. Dust-laden air enters the cyclone and is spun around, causing heavier particles to fall to the bottom while cleaner air exits through the top. Advantages Low operational costs, no moving parts, can handle high dust loads, and pre-cleaning before baghouses or cartridge filters. Applications Pre-treatment stages, capturing large and coarse particles from material handling and crushing operations. ### Other Air Emission Solutions #### Wet Scrubbers --- Wet scrubbers use a liquid (usually water) to capture and remove dust particles and gaseous air pollutants. The dust-laden air is passed through a scrubbing liquid, which traps the dust particles and/or other pollutants. Advantages Effective for capturing fine dust and gaseous pollutants, can handle high temperatures and moist conditions, and reduces fire hazards. Applications Areas with high moisture content, emission control from kilns and dryers, and chemical processing areas. #### Key Features of Our Dust Collection Systems At Sly, we offer a comprehensive range of top-quality dust collection equipment, both wet and dry, designed to safeguard mineral and mining processing operations from potentially combustible and hazardous dust. Our systems efficiently remove or recycle dust, promoting cleanliness and productivity. [**Contact Sly**](https://www.slyinc.com/contact/) today, and let us tailor a dust collection system to meet the unique needs of your bioprocessing operations. - **High-Efficiency Filtration:** Our systems employ advanced filtration technology to capture even the finest dust particles, promoting a cleaner work environment. - **Customized Design:** We understand the specific requirements of each plant and offer customized solutions to optimize dust collection efficiency. - **Energy-Efficient Operation:** Our systems are engineered for energy efficiency without compromising performance. ### Case Studies & White Papers ##### Mercury Capture: Sly Impinjet Scrubber is an Integral System Component for Mercury Reduction in Cement Kiln Dust As cement plants are faced with the need to drastically reduce mercury emissions, technological advances enable the lowering of such emissions from cement kiln exhaust stacks and other sources. [Download Case Study](https://www.slyinc.com/resources/case-studies/mercury-capture-sly-impinjet-scrubber-is-an-integral-system-component-for-mercury-reduction-in-cement-kiln-dust/) ###### Featured Resources ![](https://www.slyinc.com/wp-content/uploads/2024/08/pulsejet-2.png "pulsejet | Sly Air Pollution Control") #### The Role of Dust Collectors in Cement Production The production of Portland cement makes up approximately 90% of the total cement produced in the U.S. The main raw materials categories used to make Portland cement are lime, silica, alumina, and iron, but the process also consists of byproducts from other industries such as power plant fly ash, steel mill scale, and metal smelting slag. [Read More](https://www.slyinc.com/blog/the-role-of-dust-collectors-in-cement-production/) --- ### [Carbon Black](https://www.slyinc.com/industries/carbon-black/) **Published:** August 5, 2024 **Author:** p1ws **Content:** ![carbon black dust collection](https://www.slyinc.com/wp-content/uploads/2024/07/carbon-black-dust-collection.jpg "carbon-black-dust-collection | Sly Air Pollution Control") # Carbon Black **Ensure Your Environment is Safe When Processing Carbon Black With a Proven Solution.** ## Carbon Black Dust Collection --- Carbon black is a form of finely divided carbon particles produced through the pyrolysis of petroleum product residues or natural gas using controlled process conditions and high temperatures. Carbon black is primarily used as a reinforcing agent in rubber-compounding products such as tires, belts, and hoses. Overall, it improves a material’s physical and mechanical properties by reinforcing a product’s strength, durability, and resistance to abrasion. Another form of refined carbon is utilized in power plants to aid in absorbing toxic gases. The carbon black industry has experienced significant growth in recent years, with a projected CAGR of 5.0% through at least 2032. This is being driven by the expanding automotive sector, increasing demand for high-quality tires, and the rising consumption of industrial rubber products worldwide. Additionally, the surge in manufacturing plastics, printing inks, and paints has further propelled the demand for carbon black. ![](https://www.slyinc.com/wp-content/uploads/2024/07/carbon-black-dust-collection-white.png "carbon-black-dust-collection-white | Sly Air Pollution Control") Overcome the Most Challenging Industrial Dust Environments [Download White Paper](https://info.slyinc.com/dust-containment-wp?_gl=1%2A1kyrfvm%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzEyMzE1Ni4xNi4xLjE3MzcxMjY3MzQuMzEuMC4yMzU0NTQxNjE.) ### Carbon Black Dust Collectors [![](https://www.slyinc.com/wp-content/uploads/2025/01/square-series-baghouse.jpg) SBR Pulse Jet Collectors](https://www.slyinc.com/products/dust-collectors/tubejet-baghouse-dust-collectors/stj-sbr-square-series-pulse-jet-collectors/) [![](https://www.slyinc.com/wp-content/uploads/2025/01/Collectorr-CTR-sly.jpg) CBR Pulse Jet Collectors](https://www.slyinc.com/products/dust-collectors/tubejet-baghouse-dust-collectors/ctr-cbr-cylindrical-pulse-jet-collectors/) [![](https://www.slyinc.com/wp-content/uploads/2025/01/venturi-wet-scrubbers-external.jpg) Venturi Gas Scrubbers](https://www.slyinc.com/products/industrial-wet-scrubbers/venturi-wet-scrubber/) [![](https://www.slyinc.com/wp-content/uploads/2025/01/industrial-spouts-for-loading.jpg) Industrial Loading Spouts](https://www.slyinc.com/products/industrial-bulk-solids-loading-spouts/) ![](https://www.slyinc.com/wp-content/uploads/2024/07/Air-Pollution-Control-Gradient.png "Air-Pollution-Control-Gradient | Sly Air Pollution Control") --- We offer a complete line of dust collection equipment, including bag houses and media selection for the filters, wet scrubbers, cyclones, and loading spouts. Our technicians can draw upon industry knowledge gathered during our 150-year history of designing and building proprietary systems for companies of all types. Ensure your environment is safe when processing carbon black with a proven solution. [Contact Sly](/contact) ![Piles of processed coal next to a rail siding waiting to be put on a train for transporting to a coastal port](https://www.slyinc.com/wp-content/uploads/2024/08/carbon-industry-1.jpg "Coal Mining and processing in South Africa | Sly Air Pollution Control") ![](https://www.slyinc.com/wp-content/uploads/2024/09/Acto-Carbon-1-1.jpg "Acto-Carbon | Sly Air Pollution Control") The newest industry development involves reclaimed carbon removed from old tires. Reclaimed carbon black can substitute for virgin carbon black in some applications. However, it presents processing challenges due to its lightweight and less-than-fluid nature. Carbon black dust requires not one but multiple [dust collection](https://www.slyinc.com/dust-collectors/) or suppression systems because dust can be generated at any point during material handling, from the point of entry through processing, mixing, and [shipping](https://www.slyinc.com/industrial-bulk-solids-loading-spouts/). Carbon black is a product, not a nuisance dust, and therefore is recycled into the production stream. While not a nuisance, it poses several hazards that necessitate proper control. These include: - **Occupational health risks:** The workers involved in its production or handling are at risk of respiratory problems due to the fine nature of carbon black particles. Prolonged exposure or inhalation of its dust can lead to lung diseases. - **Fire and Explosion Hazards:** Carbon black dust is combustible and can create explosive atmospheres if accumulated in sufficient quantities. If it catches fire, it emits noxious gases. The fire hazard in manufacturing facilities and storage areas necessitates appropriate safety measures and dust control systems with explosion-proof venting and/or suppression systems that meet NFPA standards. - **Environmental Impact:** Carbon black dust can be released into the atmosphere during processing, transportation, or storage, contributing to air pollution. It can also contaminate soil and water bodies if not appropriately managed, adversely affecting ecosystems. #### Celebrating *150 Years* --- Sly offers customers decades of supplying dust collection systems within the carbon black industry. Due to this depth of knowledge, Sly has provided dust collection solutions for the emerging interests involved with reclaimed carbon black. Every dust collection system manufactured by Sly is a custom build considering the different design elements, such as media selection for the bag filters and the air-to-cloth ratio vs. interstitial velocity, to name a few. Essential features for consideration when designing a baghouse for carbon black dust would include: - Meeting emissions standards - Enhancing worker and plant safety - Improving air quality Carbon black is a versatile material widely used in various industries, mainly rubber and pigment applications. The proper dust collection system can help companies meet environmental and occupational safety regulations while meeting goals for a return on investment by recapturing a process medium. When facing challenges related to dust generation during processing, work with an industry expert for advanced dust control systems. ### Case Studies & White Papers ##### Using Wet Scrubbers for Combustible Dust Control Our new guide, Using Wet Scrubbers for Combustible Dust Control, can help you decide if a wet scrubber is the right solution. [Download Case Study](https://info.slyinc.com/guide-using-wet-scrubbers-for-combustible-dust-control-1?_gl=1%2A1htmsgq%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzEyMzE1Ni4xNi4xLjE3MzcxMjY3ODMuNDMuMC4yMzU0NTQxNjE.) ###### Featured Resources [![](https://www.slyinc.com/wp-content/uploads/2024/09/overcoming-dust-wp.webp "overcoming-dust-wp | Sly Air Pollution Control")](https://info.slyinc.com/dust-containment-wp?_gl=1%2A1l3qd0o%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzEyMzE1Ni4xNi4xLjE3MzcxMjY3OTcuMjkuMC4yMzU0NTQxNjE.) #### Emerging from the Haze: Overcoming the Most Challenging Industrial Dust Environments In this white paper, you’ll learn why being flexible is the great solution for dust collection: - The Importance of Dust Control - The Confluence of Kst and Pmax for Combustibility - Conducting a Dust Hazard Analysis - Case Study on a Customized Solution [Read More](https://info.slyinc.com/dust-containment-wp?_gl=1%2A1l3qd0o%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzEyMzE1Ni4xNi4xLjE3MzcxMjY3OTcuMjkuMC4yMzU0NTQxNjE.) --- ### [Biomass](https://www.slyinc.com/industries/biomass/) **Published:** July 1, 2024 **Author:** Mike Eaton **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/07/biomass-industry-dust.jpg "biomass-industry-dust | Sly Air Pollution Control") # BIOMASS **Effective Dust Collection Systems Capture Airborne Particles, Minimizing Potential Hazards.** ## It’s Organic: Biomass Processing Equipment --- Biomass processing converts organic matter into useful forms of energy or high-value end products. Energy generation can include biomass designated for biofuels, biogas, or electricity. Depending on the biomass source, moisture levels vary widely, ranging from less than 15% to more than 90%, which makes moisture removal a critical step in converting biomass to energy. The drying process within a biomass facility generates a considerable amount of highly combustible dust, increasing risks of fires and explosions posing a significant hazard to worker health and safety, and damaging capital equipment. Gas contaminants, (sulfer dioxide, hydrochloric acid, ammonia, and hydrogen sulfide) may exist in the exhaust stream as a result of processing. These gases can be captured and scrubbed with a wet scrubber such as Sly’s Packed Tower. Effective dust collection systems capture airborne particles, minimizing potential hazards. Beyond safeguarding worker health and safety, these systems protect equipment, reduce maintenance needs, and help operators prevent environmental pollution or costly regulatory fines. ![](https://www.slyinc.com/wp-content/uploads/2024/07/biomass-processing-dust-recapture.png "biomass-processing-dust-recapture | Sly Air Pollution Control") Discover How Dust Collection for Biomass Processing Can Reduce Hazards and Clear the Air [Download White Paper](https://info.slyinc.com/biomass-wp?_gl=1%2A7kdl7%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzEyMzE1Ni4xNi4xLjE3MzcxMjY1NzcuNTkuMC4yMzU0NTQxNjE.) ### Dust Collection Equipment for Biomass [![](https://www.slyinc.com/wp-content/uploads/2025/01/biomass-baghouse-dust-collection.jpg) STJ Dust Collectors](https://www.slyinc.com/products/dust-collectors/tubejet-baghouse-dust-collectors/stj-sbr-square-series-pulse-jet-collectors/) [![](https://www.slyinc.com/wp-content/uploads/2025/01/venturi-wet-scrubbers-external.jpg) Venturi Wet Scrubbers](https://www.slyinc.com/products/industrial-wet-scrubbers/venturi-wet-scrubber/) [![](https://www.slyinc.com/wp-content/uploads/2025/01/sly-spout-load-truck.jpg) Loading Spouts](https://www.slyinc.com/products/industrial-bulk-solids-loading-spouts/) ![](https://www.slyinc.com/wp-content/uploads/2024/07/Air-Pollution-Control-Gradient.png "Air-Pollution-Control-Gradient | Sly Air Pollution Control") --- Sly offers a complete line of dust collection equipment to keep biomass processing operations clean from potentially combustible, hazardous dust and remove or recycle it into production. Contact us to design, fabricate, and install a dust collection system tailored to your bioprocessing operations. [Contact Sly](/contact) While wood byproducts supply most biomass energy sources, operators continue to experiment with other forms of organic material, which generate different types of dust. One commonality is that the smaller and drier the dust particle, the more it lowers the ignition energy required for combustion. Types of [biomass that could require a dust collection system](https://info.slyinc.com/biomass-wp?_gl=1%2A37h9ja%2A_ga%2AMjU5ODIyODA1LjE2NzI5MjY0MzA.%2A_ga_0G2M9CMRL1%2AMTY4MzY1NTQ0NC4zNy4xLjE2ODM2NTU0NDguMC4wLjA.) can include: - Agricultural crops and waste materials such as corn cobs and straw - Palm fronds - Sawdust and other wood processing waste - Biogenic materials in municipal solid waste (i.e., paper, cotton, wool, yard waste) - Animal manure and human sewage - Algae ### Partner With Experience Biomass processing operations should work with a company like Sly LLC, which can offer decades of dust collection experience. We can and have designed dust collection systems for biomass processing operations, from specially constructed baghouses with modified inlets to cyclones and more. Typically, dust collection is installed directly after the dryer, but dust collection is also essential throughout the process of conveyance and transport. Processing operations that generate dust and require a baghouse or cyclone can include dryers (rotary, flash, superheated or fluid bed dryers), boilers, furnaces, kilns, separators, mills, pellet presses, conveyors, and transport. The benefits of a dust collection system in biomass processing operations extend beyond safety and environmental concerns. It can also improve the overall process efficiency by reducing the amount of dust that accumulates in the equipment and ducts, which can lead to clogging, extra maintenance, and downtime. A dust collection system can also help operators comply with regulatory requirements to maintain process emissions within acceptable limits. Further, the collected dust can be reused as a fuel source or feedstock for other processes. This creates a closed-loop system that reduces waste and lowers operating costs. ### Case Studies & White Papers ##### Control and Repurpose Deep Fryer Oil Emissions with Sly’s Venturi Wet Scrubber Biomass includes diverse types of materials that generate forms of waste requiring proper collection. A commercial potato frying operation needed a new wet scrubber to capture oil particulates and replace a system that was inefficient and required frequent, unplanned maintenance. Sly LLC recommended its Venturi Scrubber, enabling the company to meet environmental regulations and avoid plant shutdowns. Read the case study for more details. [Download Case Study](https://www.slyinc.com/resources/case-studies/control-and-repurpose-deep-fryer-oil-emissions-with-slys-venturi-wet-scrubber/) ##### Wave of the Future: Dried Palm Fronds a Prickly Bioenergy Source Dust collection system is a vital part of the processing stream A company drying and converting palm fronds into electrical power needed a dust collection system that could handle challenges such as the emerging particulate’s low bulk density and potential combustibility. Sly LLC provided a solution with special modifications to safely and efficiently manage the particulates. It also reinforced the structure to handle the location’s severe weather and high winds. Find out more in our case study about this biomass process. [Download Case Study](https://www.slyinc.com/resources/case-studies/3251/) ###### Featured Resources [![](https://www.slyinc.com/wp-content/uploads/2024/08/biomass-wp.jpg "biomass-wp | Sly Air Pollution Control")](https://info.slyinc.com/biomass-wp?_gl=1%2Aigamdk%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzEyMzE1Ni4xNi4xLjE3MzcxMjY2NTcuNDUuMC4yMzU0NTQxNjE.) #### Discover How Dust Collection for Biomass Processing Can Reduce Hazards and Clear the Air in our White Paper While biomass operations convert organic waste into clean energy or usable products, there are some instances during waste stream transport, drying and/or processing where nuisance dust or processing dust becomes an issue. [Read More](https://info.slyinc.com/biomass-wp?_gl=1%2Aigamdk%2A_gcl_au%2AMzA0MzYxMzQ5LjE3MzQwMzg0NzQ.%2A_ga%2AODYwNTk1NTYxLjE3MzQwMzg0NzQ.%2A_ga_0G2M9CMRL1%2AMTczNzEyMzE1Ni4xNi4xLjE3MzcxMjY2NTcuNDUuMC4yMzU0NTQxNjE.) ### Effective Methods for Biomass Dust Collection - [![biomass plant](https://www.slyinc.com/wp-content/uploads/2024/08/biomass-2-1.jpg "biomass-2 | Sly Air Pollution Control")](https://www.slyinc.com/blog/improving-air-quality-in-biomass-energy-facilities/) ## [Improving Air Quality in Biomass Energy Facilities](https://www.slyinc.com/blog/improving-air-quality-in-biomass-energy-facilities/) November 3, 2025 Biomass fuels vary in size, moisture, and consistency. Drying and handling create fine dust clouds, while combustion adds more particulates.… [**Read More**](https://www.slyinc.com/blog/improving-air-quality-in-biomass-energy-facilities/) - [![](https://www.slyinc.com/wp-content/uploads/2024/08/biomass-4.jpg "biomass | Sly Air Pollution Control")](https://www.slyinc.com/blog/how-does-a-biomass-dust-collector-work/) ## [How Does a Biomass Dust Collector Work?](https://www.slyinc.com/blog/how-does-a-biomass-dust-collector-work/) June 8, 2023 Fertilizer for the garden. Dish detergent by the kitchen sink. Electricity to power lights over your workspace. These are a… [**Read More**](https://www.slyinc.com/blog/how-does-a-biomass-dust-collector-work/) - [![](https://www.slyinc.com/wp-content/uploads/2024/08/biomass-3-2.jpg "biomass-3 | Sly Air Pollution Control")](https://www.slyinc.com/blog/the-importance-of-dust-safety-in-the-biomass-industry/) ## [The Importance of Dust Safety in the Biomass Industry](https://www.slyinc.com/blog/the-importance-of-dust-safety-in-the-biomass-industry/) May 5, 2023 While biomass has existed since the earth was formed, the past few decades have witnessed an increased interest in using… [**Read More**](https://www.slyinc.com/blog/the-importance-of-dust-safety-in-the-biomass-industry/) - [![](https://www.slyinc.com/wp-content/uploads/2024/07/biomass-industry-dust.jpg "biomass-industry-dust | Sly Air Pollution Control")](https://www.slyinc.com/blog/top-reasons-why-biomass-dust-collection-demands-a-customized-approach/) ## [Top Reasons Why Biomass Dust Collection Demands a Customized Approach](https://www.slyinc.com/blog/top-reasons-why-biomass-dust-collection-demands-a-customized-approach/) April 13, 2023 Nations around the globe are looking for alternative fuels that are renewable, carbon neutral and/or can be used to break… [**Read More**](https://www.slyinc.com/blog/top-reasons-why-biomass-dust-collection-demands-a-customized-approach/) --- ### [TubeJet Baghouse Dust Collectors Application Examples](https://www.slyinc.com/products/dust-collectors/tubejet-baghouse-dust-collectors/tubejet-baghouse-dust-collectors-application-examples/) **Published:** September 3, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/09/application-silica-sand.jpg "application- silica sand | Sly Air Pollution Control") # TubeJet Baghouse Dust Collectors Application Examples ## Pulse-Jet Dust Collectors Handle Particulate from Silica Sand Operations --- ### Two TubeJet® dust collectors have been successfully employed by a major sand producer. Two 20,000 CFM TubeJet filters collect silica sand dust at this sand processor. The first vents the screening plant, while another (shown in photo) handles the dust from a bagging facility. TubeJet collectors have a top bag removal design, which allows easy changing from the clean air side, reducing silica exposure. ### Pulse-Jet Filters Collect Dust from Rubber Compounding A new TubeJet® dust collector has been successfully employed by this rubber compounder to collect dust from the manufacturing process. The collector ventilates Banbury mixers and their assorted feed systems, removing carbon black and various binders and fillers. System volume is 21,200 CFM at a 4.9:1 air-to-cloth ratio using 16 oz. singed polyester bags. TubeJet collectors offer “no tool” top removal of filter bags and a convenient walk-in clean air plenum for easy maintenance and bag changing. ![](https://www.slyinc.com/wp-content/uploads/2024/07/Air-Pollution-Control-Gradient.png "Air-Pollution-Control-Gradient | Sly Air Pollution Control") --- Sly offers a full range of baghouse designs and media choices to solve the toughest pollution control problems, including high temperatures pressures, and corrosives. Our technicians can draw upon 150 years of industry knowledge when designing and building proprietary systems for companies of all types. Sly offers a complete line of wet scrubber equipment to keep chemical manufacturing clean from potentially combustible, hazardous gases in the air. The Sly Venturi Scrubber efficiently collects fine particulate and mists. [Contact Sly](/contact) ## Pulse-Jet Dust Collector Eliminates Cyclone in Heavy Loading Application ### Takes Less Space; Has Less Pressure Drop, Less Maintenance A new Sly TubeJet® dust collector has been successfully used to collect limestone dust at this processor. The unit uses a special settling chamber designed to eliminate the need for a cyclone pre-filter, which is traditionally employed in similar heavy loading applications. Instead of a cyclone, dust enters the collector via a high side inlet which reduces the settling velocity, letting the dust drop out of the air stream. With less suspended dust, wear on the filter bags is reduced. The TubeJet vents a rotary limestone dryer. Air volume is 16,860 ACFM at 187fF; air-to-cloth ratio is 5:1. By eliminating the cyclone, the collector has also reduced the total system pressure drop, and eliminated cyclone maintenance and cyclone space considerations. TubeJet collectors offer “no tool” top removal of filter bags and a convenient walk-in clean air plenum for easy maintenance and bag changing. ## New Compact Dust Collector Vents Rubber Grinding Process ### High Side Inlet Design Accommodates Cyclone Without Adding to Footprint Size A Sly TubeJet® dust collector has been employed to collect rubber dust from the grinding process at this rubber roller manufacturer. The collector employs a high side inlet, which accommodates a cyclone pre-cleaner without extensive additional ductwork or the need to enlarge the system’s footprint. The cyclone reduces the chance of sparks from the grinding process entering the baghouse, a situation that created numerous fires for the previous dust collection system. Sly provided both the dust collector and cyclone collector. System volume is 5200 CFM at an air-to-cloth ratio is 7.2:1. TubeJet collectors offer “no tool” top removal of filter bags and a convenient walk-in clean air plenum for easy maintenance and bag changing. --- ## Products ### [K2016 Diaphragm Valve Repair Kit, Genuine Goyen “Millennium” version, 3/4”, single, Buna-N (Nitrile) diaphragm w/spring](https://www.slyinc.com/product/k2016-diaphragm-valve-repair-kit-genuine-goyen-millennium-version-3-4-single-buna-n-nitrile-diaphragm-w-spring/) **Published:** August 5, 2024 **Author:** p1ws **Content:** **Part number:** 3115229 **Manufacturer:** Goyen **Goyen part number:** K2016 **Replacement diaphragm for:** Genuine Goyen valve, discontinued “Millennium” version, 3/4” threaded, single Buna-N diaphragm with spring (Sly p/n: 3115227; Goyen p/n: RCAC20ST3000). Repair kits are available, but valves are not. **Diaphragm material:** Buna-N **Temperature rating:** 180 deg. F **Product categories:** Diaphragm Valves and Repair Kits, Goyen **Product tags:** diaphragm valve, goyen, K2016, repair kit --- ### [K2546 Diaphragm Valve Repair Kit, Genuine Goyen “Shockwave” version, 1”, single Buna-N (Nitrile) diaphragm](https://www.slyinc.com/product/k2546-diaphragm-valve-repair-kit-genuine-goyen-shockwave-version-1-single-buna-n-nitrile-diaphragm/) **Published:** August 5, 2024 **Author:** p1ws **Content:** **Part number:** 31151020 **Manufacturer:** Goyen **Goyen part number:** K2546 **Replacement diaphragm for:** [Genuine Goyen valve,  “Shockwave” version, 1” threaded, single, Buna-N diaphragm](https://www.slyinc.com/product/diaphragm-valve-goyen-shockwave-version-1-threaded-single-buna-n-diaphragm/) (Sly p/n: 31151019; Goyen p/n: RCAC25T4002) **Diaphragm material:** Buna-N **Temperature rating:** 180 deg. F. **Product categories:** Diaphragm Valves and Repair Kits, Goyen **Product tags:** diaphragm valve, goyen, K2546, repair kit --- ### [K2529 Diaphragm Valve Repair Kit, Genuine Goyen “Millennium” version, 1”, single, Buna-N (Nitrile) diaphragm w/spring](https://www.slyinc.com/product/k2529-diaphragm-valve-repair-kit-genuine-goyen-millennium-version-1-single-buna-n-nitrile-diaphragm-w-spring/) **Published:** August 5, 2024 **Author:** p1ws **Content:** **Part number:** 3115230 **Manufacturer:** Goyen **Goyen part number:** K2529 **Replacement diaphragm for:** Genuine Goyen valve, discontinued “Millennium” version, 1” threaded, single Buna-N diaphragm with spring (Sly p/n: 3115226; Goyen p/n: RCAC25T3000). Repair kits are available, but valves are not. **Diaphragm material:** Buna-N **Temperature rating:** 180 deg. F **Product categories:** Diaphragm Valves and Repair Kits, Goyen **Product tags:** diaphragm valve, goyen, K2529, repair kit --- ### [Solenoid Valve Replacement RCA3D0-331, Genuine Goyen, 2-way, 1/8” NPT](https://www.slyinc.com/product/solenoid-valve-replacement-rca3d0-331-genuine-goyen-2-way-1-8-npt/) **Published:** August 5, 2024 **Author:** p1ws **Content:** **Part number:** 3115232 **Manufacturer:** Goyen **Goyen part number:** RCA3D0-331 **Construction:** Aluminium **NPT:** 1/8” **Voltage:** 100/120 V 50/60 Hz **Power:** 15.2/19.7 VA **Temperature rating:** 180 deg. F **Weight:** 6.3 oz. **Related Materials:** - Goyen RCA3Do spec sheet **Product categories:** Goyen **Product tags:** goyen, RCA3D0-331, replacement, solenoid valve --- ### [K4502 Diaphragm Valve Repair Kit, Genuine Goyen 1-1/2”, double Buna-N (Nitrile) diaphragm w/spring](https://www.slyinc.com/product/k4502-diaphragm-valve-repair-kit-genuine-goyen-1-1-2-double-buna-n-nitrile-diaphragm-w-spring/) **Published:** August 5, 2024 **Author:** p1ws **Content:** **Part number:** 3115231 **Manufacturer:** Goyen **Goyen part number:** K4502 **Replacement diaphragm for:** [Genuine Goyen valve,  1-1/2” threaded, double Buna-N diaphragm](https://www.slyinc.com/product/diaphragm-valve-goyen-1-1-2-threaded-double-buna-n-diaphragm/) (Sly p/n: 3115225; Goyen p/n: RCA45T0000) **Diaphragm material:** Buna-N **Temperature rating:** 180 deg. F. **Product categories:** Diaphragm Valves and Repair Kits, Goyen **Product tags:** diaphragm valve, goyen, K4502, repair kit --- ### [K2034 Diaphragm Valve Repair Kit, Genuine Goyen "Shockwave" version, 3/4", single, Buna-N (Nitrile) diaphragm](https://www.slyinc.com/product/k2034-diaphragm-valve-repair-kit-genuine-goyen-shockwave-version-3-4-single-buna-n-nitrile-diaphragm/) **Published:** August 5, 2024 **Author:** p1ws **Content:** **Part number:** 31151016 **Manufacturer:** Genuine Goyen **Goyen part number:** K2034 **Replacement diaphragm for:** [Genuine Goyen valve, “Shockwave” version, 1” threaded, single Buna-N diaphragm](https://www.slyinc.com/product/diaphragm-valve-goyen-shockwave-version-3-4-threaded-single-buna-n-diaphragm%e2%80%a8/) (Sly p/n: 31151015; Goyen p/n: RCAC20ST4002) **Diaphragm material:** Buna-N **Temperature rating:** 180 deg. F. **Product categories:** Diaphragm Valves and Repair Kits, Goyen **Product tags:** diaphragm valve, goyen, K2034, repair kit --- ### [RCA45T0000 Diaphragm Valve, Genuine Goyen, 1-1/2” threaded, double, Buna-N (Nitrile) diaphragm](https://www.slyinc.com/product/rca45t0000-diaphragm-valve-genuine-goyen-1-1-2-threaded-double-buna-n-nitrile-diaphragm/) **Published:** August 5, 2024 **Author:** p1ws **Content:** **Part number:** 3115225c **Manufacturer:** Goyen **Goyen part number:** RCA45T0000 **Construction:** Aluminium **NPT:** 1/8” **Thread size:** 1-1/2” **Diaphragm material:** Buna-N” **Temperature rating:** 180 deg. F **Related Materials:** - Goyen Millennium ST Series spec sheet - Goyen T Series spec sheet **Product categories:** Diaphragm Valves and Repair Kits, Goyen **Product tags:** diaphragm valve, goyen, RCA45T0000 --- ### [RCAC25T4002 Diaphragm Valve, Genuine Goyen “Shockwave” version, 1” threaded, single Buna-N (Nitrile) diaphragm](https://www.slyinc.com/product/rcac25t4002-diaphragm-valve-genuine-goyen-shockwave-version-1-threaded-single-buna-n-nitrile-diaphragm/) **Published:** August 5, 2024 **Author:** p1ws **Content:** **Part number:** 31151019 **Manufacturer:** Goyen **Goyen part number:** RCAC25T4002 **Construction:** Aluminium **NPT:** 1/8” **Thread size:** 1” **Diaphragm material:** Buna-N” **Temperature rating:** 180 deg. F **Related Materials** - Goyen RCAC25T spec sheet - Goyen “T” Series spec sheet **Product categories:** Diaphragm Valves and Repair Kits, Goyen **Product tags:** diaphragm valve, goyen, RCAC25T4002 --- ### [RCAC20ST4002 Diaphragm Valve, Genuine Goyen "Shockwave" version, 3/4" threaded, single, Buna-N (Nitrile) diaphragm](https://www.slyinc.com/product/rcac20st4002-diaphragm-valve-genuine-goyen-shockwave-version-3-4-threaded-single-buna-n-nitrile-diaphragm/) **Published:** August 5, 2024 **Author:** p1ws **Content:** **Part number:** 31151015 **Manufacturer:** Goyen **Goyen part number:** RCAC20ST4002 **Construction:** Aluminium **NPT:** 1/8” **Thread size:** 3/4” **Diaphragm material:** Buna-N” **Temperature rating:** 180 deg. F **Related Materials:** - Goyen RCAC20ST spec sheet - Goyen “T” series spec sheet **Product categories:** Diaphragm Valves and Repair Kits, Goyen **Product tags:** diaphragm valve, goyen, RCAC20ST4002 --- ## Case Studies ### [Control and Repurpose Deep Fryer Oil Emissions with Sly’s Venturi Wet Scrubber](https://www.slyinc.com/resources/case-studies/control-and-repurpose-deep-fryer-oil-emissions-with-slys-venturi-wet-scrubber/) **Published:** August 19, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/09/case-studies-hero-1024x341.jpg "case studies hero | Sly Air Pollution Control") # Control and Repurpose Deep Fryer Oil Emissions with Sly’s Venturi Wet Scrubber ##### Industry: Food Processing --- ##### Application Commercial Frying Emissions Control ![Vertical industrial storage tank on a metal frame with a blue printed schematic overlay labeling gas inlet/outlet, water inlet, pressure tap, drain, and other components.](https://www.slyinc.com/wp-content/uploads/2026/03/Venturi-Wet-Scrubber-CS-260x300.jpg "Venturi-Wet-Scrubber-CS | Sly Air Pollution Control") ## Case Study Highlights ###### Replaced an underperforming existing wet scrubber ###### Achieved greater than 99% particulate removal efficiency ###### Reduced unscheduled maintenance requirements ###### Captured waste cooking oil for potential repurposing ###### Designed for 20,000 ACFM gas flow ###### Exceeded required environmental performance ![](https://www.slyinc.com/wp-content/uploads/2024/08/Sly-Yellow-Callout-Arrow.jpg "Sly-Yellow-Callout-Arrow | Sly Air Pollution Control") ## The Challenge: ### **Controlling Oil and Grease Emissions from Commercial Frying** A leading U.S.-based frozen food manufacturer operated a processing plant with a commercial potato fryer that used large quantities of cooking oil. The facility needed Best Available Control Technology equipment to reduce frying emissions and meet current environmental requirements. Its existing wet scrubber was underperforming and required extensive unscheduled maintenance. Problems included: - **Waste cooking oil coated areas around exhaust stacks** - **Existing scrubber struggled to meet emissions requirements** - **Unscheduled maintenance affected plant performance** - **Frying generated oil droplets and VOC emissions** Deep-fryer emissions included particulate matter in the form of oil droplets and volatile organic compounds created as heated oil vaporized. Emission characteristics can vary depending on the oil, operating temperature, fried product, and the fryer itself. ![Industrial processing plant with tall silver chimneys, large cylindrical tanks, and a network of pipes on a raised platform against a blue sky.](https://www.slyinc.com/wp-content/uploads/2026/09/food-manufacturing-emissions.jpg "food-manufacturing-emissions | Sly Air Pollution Control") ![](https://www.slyinc.com/wp-content/uploads/2024/08/Sly-Yellow-Callout-Arrow.jpg "Sly-Yellow-Callout-Arrow | Sly Air Pollution Control") ## The Solution: ### **Sly No. 7 Venturi Wet Scrubber System** After evaluating the emissions, performance requirements, and existing equipment, Sly designed a replacement system using a No. 7 Venturi Scrubber and auxiliary equipment. The system used controlled dilution air to cool the gas stream before the Venturi, helping grease and oil behave like solid particulates for improved removal. A continuous overflow purged fouled water containing grease, batter, and potato flakes to reduce buildup. This approach provided several advantages: - **Controlled inlet temperature supports effective particulate removal** - **Continuous overflow reduces grease and solids buildup** - **Adjustable throat helps optimize scrubber performance** - **Mist eliminator captures condensed water and grease aerosols** A final high-efficiency mist eliminator was installed before the stack to remove condensed water vapor and grease aerosols. ![Illustration of a Venturi scrubber showing gas-liquid contact: converging nozzle, droplet spray, and a spiraling flow in a separating chamber labeled Venturi Scrubber.](https://www.slyinc.com/wp-content/uploads/2026/09/food-manufacturing-venturi-scrubber.jpg "food-manufacturing-venturi-scrubber | Sly Air Pollution Control") ## System Specifications ##### [Gas Flow](Contaminant:) **20,000 ACFM** ##### Inlet Temperature **220°F** ##### Differential Pressure **20 inches water column** ##### Removal Efficiency **Greater than 99% particulate removal** ##### Liquid Recirculation **180 gallons per minute** ##### Construction **Type 304L stainless steel** ![](https://www.slyinc.com/wp-content/uploads/2024/08/Sly-Yellow-Callout-Arrow.jpg "Sly-Yellow-Callout-Arrow | Sly Air Pollution Control") ## The Results: ### **Improved Emissions Control with Reduced Maintenance** The installed Venturi Scrubber exceeded the facility’s environmental requirements, produced extremely low emission rates, and reduced maintenance needs to scheduled biannual shutdowns. Key Results: - **Exceeded required environmental performance** - **Achieved greater than 99% particulate removal efficiency** - **Reduced maintenance to biannual scheduled downtimes** - **Captured waste cooking oil for potential reuse** - **Reduced oil and particulate emissions from frying** Collected waste cooking oil can potentially be repurposed for products such as biofuels after appropriate processing, providing an alternative use for material that would otherwise remain in the waste stream. ![Industrial piping and metal ducts on an outdoor factory facade with stairs and platforms nearby, against a blue sky.](https://www.slyinc.com/wp-content/uploads/2026/09/food-manufacturing-scrubber-emissions.jpg "food-manufacturing-scrubber-emissions | Sly Air Pollution Control") ## **Why Sly Venturi Wet Scrubbers Work for Commercial Frying Emissions Control Applications** Sly Venturi Wet Scrubbers use the differential between high-velocity gases and free-flowing water to create droplets that capture contaminants and hold them in suspension. This design is suited to collecting fine particulates and mists, such as oil droplets generated during commercial frying. In this application, controlled gas-stream cooling, continuous overflow, an adjustable Venturi throat, and a high-efficiency mist eliminator addressed the characteristics of the fryer exhaust stream. ## FAQs ****What type of scrubber can control emissions from commercial fryers?**** Venturi wet scrubbers can be used to remove fine particulates and mists from industrial gas streams. In this application, a Sly Venturi Scrubber was used to control oil droplets generated by a commercial potato fryer. ******How does a Venturi scrubber remove oil mist?****** A Venturi scrubber uses high-velocity gas and water to create droplets that capture contaminants. The collected material remains suspended in the liquid stream for removal from the system. ******Why is temperature control important for fryer emissions?****** In this application, dilution air cooled the gas stream before it entered the Venturi. This helped the grease and oils behave more like solid particulates, supporting their removal within the scrubber. ******How can wet scrubbers reduce maintenance from grease buildup?****** The Sly system used a continuous overflow to purge fouled water containing grease, batter, and potato flakes. This helped prevent those materials from accumulating within the system. ******Can collected waste cooking oil be repurposed?****** Yes. The waste cooking oil can be further processed for uses including animal feed, supplements, biodiesel, and other biofuel applications. ##### Control and Repurpose Deep Fryer Oil Emissions with Sly’s Venturi Wet Scrubber [Download Case Study](https://www.slyinc.com/wp-content/uploads/2025/01/SLY_OilFryer-CaseStudy1.pdf) ## Why Sly? ![](https://www.slyinc.com/wp-content/uploads/2024/07/Air-Pollution-Control-Gradient.png "Air-Pollution-Control-Gradient | Sly Air Pollution Control") --- Sly provides engineered dust-collection solutions for demanding industrial applications. TubeJet® dust collectors are built to support long filter life, efficient dust recovery, reduced maintenance, and flexible installation requirements. Custom engineering options, including HEPA integration and specialized collector configurations, help facilities optimize filtration performance and operational efficiency. [Request a Consultation](/contact) --- ### [Wave of the Future: Dried Palm Fronds a Prickly Bioenergy Source](https://www.slyinc.com/resources/case-studies/wave-of-the-future-dried-palm-fronds-a-prickly-bioenergy-source/) **Published:** August 23, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/09/case-studies-hero-1024x341.jpg "case studies hero | Sly Air Pollution Control") # Wave of the Future: Dried Palm Fronds a Prickly Bioenergy Source ##### Industry: Bioenergy / Biomass --- ##### Application Palm Frond Drying and Dust Collection ![Blue baghouse filter assembly on a steel frame, with angled top housings and visible filter bags inside; overlaid technical blueprint lines indicate dimensions like inlet, filter bag area, and inside case.](https://www.slyinc.com/wp-content/uploads/2026/03/Rectangular-Baghouse-CS-260x300.jpg "Rectangular-Baghouse-CS | Sly Air Pollution Control") ## Case Study Highlights The system was designed for a bioenergy plant using palm fronds as biomass feedstock for electricity production. ###### Captures lightweight palm frond drying particulates ###### High rear inlet accommodates low-density dust ###### Five explosion relief vents provide protection ###### Baghouse rated for 140 MPH winds ###### Walk-in plenum simplifies filter bag access ###### Integrates with Carrier Vibrating fluidized bed dryer ![](https://www.slyinc.com/wp-content/uploads/2024/08/Sly-Yellow-Callout-Arrow.jpg "Sly-Yellow-Callout-Arrow | Sly Air Pollution Control") ## The Challenge: ### **Managing Lightweight, Potentially Combustible Palm Frond Dust** A bioenergy facility needed to capture particulates created while drying palm fronds for use as biomass fuel. The dried material had a low bulk density and potential combustibility, requiring a dust collection system adapted to those characteristics. The facility was also located in a region prone to severe weather. Challenges included: - **Low-density dust created material-handling concerns** - **Potentially combustible particulates required explosion relief venting** - **Conventional hopper inlet was unsuitable for lightweight material** - **Facility required equipment capable of severe-weather exposure** ![Industrial blue metal pipes and support framework under a clear blue sky at an industrial facility.](https://www.slyinc.com/wp-content/uploads/2026/09/baghouse-biomass-combustible-dust.jpg "baghouse-biomass-combustible-dust | Sly Air Pollution Control") ![](https://www.slyinc.com/wp-content/uploads/2024/08/Sly-Yellow-Callout-Arrow.jpg "Sly-Yellow-Callout-Arrow | Sly Air Pollution Control") ## The Solution: ### **Modified Sly Baghouse for Palm Frond Processing** Sly installed a baghouse dust collection system with modifications designed around the lightweight palm frond dust. The system incorporated a high rear inlet instead of a traditional hopper inlet, explosion relief venting, a walk-in plenum, and structural reinforcement for winds up to 140 MPH. It operated as part of a processing stream that also included a Carrier Vibrating fluidized bed dryer. This approach provided several advantages: - **High rear inlet accommodates low-density particulates** - **Explosion relief vents address combustible material hazards** - **Walk-in plenum provides easier filter bag access** - **Cross-braced construction supports 140 MPH wind rating** ![Close-up of blue steel structural framework with red warning lights and silver mechanical fittings on an industrial setup](https://www.slyinc.com/wp-content/uploads/2026/09/palm-frond-biofuel-dust-explosion-vents.jpg "palm-frond-biofuel-dust-explosion-vents | Sly Air Pollution Control") ## System Specifications ##### [Design Airflow](Contaminant:) **60,765 ACFM** ##### Design Temperature **188°F** ##### Filter Area **10,748 square feet** ##### Air-to-Cloth Ratio **5.65:1** ##### Explosion Venting **Five 36-inch square vents** ##### Discharge **70-degree hopper with 12-inch screw conveyor** The baghouse also contained 714 grounded, 16-ounce SIPE filter bags measuring 10 feet long. ![](https://www.slyinc.com/wp-content/uploads/2024/08/Sly-Yellow-Callout-Arrow.jpg "Sly-Yellow-Callout-Arrow | Sly Air Pollution Control") ## The Results: ### **Integrated Dust Collection for Biomass Drying** The completed system provided a dust collection solution specifically configured for the palm frond drying process, including provisions for lightweight dust, combustible material, equipment access, and severe weather. Key Results: - **Integrated with Carrier Vibrating fluidized bed drying system** - **High rear inlet addressed low-density material characteristics** - **Five explosion relief vents incorporated into baghouse** - **Baghouse rated for winds up to 140 MPH** ![Industrial blue processing equipment with three vertical blue pipes and metal ductwork on a concrete pad under a clear sky](https://www.slyinc.com/wp-content/uploads/2026/09/baghouse-fluid-bed-dryer.jpg "baghouse-fluid-bed-dryer | Sly Air Pollution Control") ## **Why Sly Dust Collectors Work for Biomass Drying Applications** Sly dust collection equipment can be configured for airborne particulates generated during biomass drying and processing. In this application, modifications including a high rear inlet, explosion relief venting, grounded filter bags, a walk-in plenum, and reinforced structural construction addressed the specific characteristics of dried palm frond dust and the facility environment. ## FAQs ****What type of dust collector can be used for biomass drying?**** Baghouse dust collectors can be configured to capture airborne particulates generated during biomass drying and processing. Sly notes that its equipment can address both nuisance and process dust in wet or dry collection applications. ******Why can lightweight biomass dust require a special baghouse inlet?****** Low-bulk-density materials may require a different inlet configuration. For the palm frond application, Sly used a high rear inlet rather than a traditional hopper inlet to address the lightweight material and interstitial velocity concerns. ******How can dust collectors address combustible biomass particulates?****** The palm frond baghouse incorporated explosion relief venting because biomass feedstock processed for fuel can require explosion protection based on the baghouse size and material characteristics. ******Can baghouses be designed for severe weather conditions?****** Yes. The baghouse in this application was constructed with larger, cross-braced beams and rated for winds up to 140 MPH because the facility was located in a hurricane-prone region. ******What biomass materials can require specialized dust collection?****** The case study specifically addresses palm fronds and notes that similar high-rear-inlet modifications may be considered for other lightweight biomass feedstocks, including paper or cardboard from commercial waste. ##### Wave of the Future: Dried Palm Fronds a Prickly Bioenergy Source Dust collection system is a vital part of the processing stream [Download Case Study](https://www.slyinc.com/wp-content/uploads/2025/01/SLY_PalmFrond-CaseStudy-v2-1.pdf) ## Why Sly? ![](https://www.slyinc.com/wp-content/uploads/2024/07/Air-Pollution-Control-Gradient.png "Air-Pollution-Control-Gradient | Sly Air Pollution Control") --- Sly configured the dust collection equipment around the specific characteristics of the biomass process rather than using a standard arrangement. The company also worked within a processing stream incorporating a Carrier Vibrating fluidized bed dryer, providing coordinated equipment for biomass drying and particulate collection. [Request a Consultation](/contact) --- ### [Custom Dust Collector Replaces Worn, Non-Compliant Unit](https://www.slyinc.com/resources/case-studies/custom-dust-collector-replaces-worn-non-compliant-unit/) **Published:** August 23, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/09/case-studies-hero-1024x341.jpg "case studies hero | Sly Air Pollution Control") # Custom Dust Collector Replaces Worn, Non-Compliant Unit ##### Industry: Mining & Minerals --- ##### Application Gilsonite Vacuum Conveying and Dust Collection ![3D rendering of a blue industrial hopper on a metal stand with a conical bottom and discharge outlet; blueprint labels alongside show inlet, body, outlet and discharge flange.](https://www.slyinc.com/wp-content/uploads/2026/03/Cylindrical-Baghouse-CS-260x300.jpg "Cylindrical-Baghouse-CS | Sly Air Pollution Control") ## Case Study Highlights ###### Replaced 35-year-old, non-compliant dust collector ###### Custom-designed as a direct drop-in replacement ###### Handles 20 tons of Gilsonite per hour ###### Abrasion-resistant cyclonic inlet reduces component wear ###### Installation completed in three days ###### Expected filter life increased to at least two years ![](https://www.slyinc.com/wp-content/uploads/2024/08/Sly-Yellow-Callout-Arrow.jpg "Sly-Yellow-Callout-Arrow | Sly Air Pollution Control") ## The Challenge: ### **Replacing a Worn Dust Collector in a Restricted Space** American Gilsonite Company (AGC) used a dust collector as a filter receiver in a vacuum conveying system moving 20 tons of Gilsonite per hour from a 1,800-ton silo to a 60-ton surge bin 250 feet away. After years of operation, the 35-year-old collector had experienced significant abrasion and no longer met current combustible dust design standards. Challenges included: - **Tangential inlet caused repeated abrasion to housing walls** - **Poor inlet placement contributed to premature filter bag failure** - **Existing collector could not be reworked for compliance** - **Restricted installation area required a drop-in replacement** AGC also needed to complete the replacement quickly to limit plant downtime. ![](https://www.slyinc.com/wp-content/uploads/2024/08/custom-dust-collector_425x300.png "custom-dust-collector_425x300 | Sly Air Pollution Control") ![](https://www.slyinc.com/wp-content/uploads/2024/08/Sly-Yellow-Callout-Arrow.jpg "Sly-Yellow-Callout-Arrow | Sly Air Pollution Control") ## The Solution: ### **Custom CBR TubeJet® Baghouse Dust Collector** Sly recommended a CBR TubeJet® baghouse dust collector customized with support legs to match the physical dimensions of the existing unit. The system maintained the required filter area while incorporating abrasion-resistant construction and updated combustible dust explosion protection. This approach provided several advantages: - **Cyclonic inlet reduces direct abrasion inside the collector** - **Internal cyclone ring protects housing walls and filter bags** - **Bolt-on abrasion-resistant inlet and hopper increase service life** - **Custom dimensions allow installation within the existing footprint** The collector also uses a pulse-jet cleaning system with an adjustable solid-state timer to remove material collected on the filters. ![Sly Tubejet Collector](https://www.slyinc.com/wp-content/uploads/2024/12/1990-sly-tubejet-collector.png "1990-sly-tubejet-collector | Sly Air Pollution Control") ## System Specifications ##### [Product](Contaminant:) **CBR TubeJet® baghouse dust collector** ##### Conveying Distance **250 feet** ##### Cleaning System **Adjustable pulse-jet filter cleaning** ##### Material Flow **20 tons of Gilsonite per hour** ##### Construction **1/4-inch abrasion-resistant steel inlet and hopper** ##### Explosion Protection **MSHA/OSHA compliant per NFPA 654, 68, 69** ![](https://www.slyinc.com/wp-content/uploads/2024/08/Sly-Yellow-Callout-Arrow.jpg "Sly-Yellow-Callout-Arrow | Sly Air Pollution Control") ## The Results: ### **Faster Installation and Improved Wear Protection** AGC completed the dust collector replacement ahead of its planned shutdown schedule while improving abrasion resistance and combustible dust protection. Key Results: - **Installation completed in three days instead of four** - **One full day of plant shutdown avoided** - **Abrasion-resistant cyclone ring protects housing and filters** - **Expected filter replacement interval increased from one to two years** - **New collector meets applicable combustible dust design requirements** ![TubeJet Air Pollution Control System](https://www.slyinc.com/wp-content/uploads/2024/08/HEPA-pleated-bag-tubejet.jpg "HEPA-pleated-bag-tubejet | Sly Air Pollution Control") ## **Why CBR TubeJet® Baghouse Dust Collectors Work for Gilsonite Dust Collection Applications** Gilsonite produces significant amounts of explosive dust during processing and can be sticky, requiring sufficient filter surface area to maintain airflow through the baghouse. In this application, the CBR TubeJet® baghouse combined the required filter area with a cyclonic inlet, internal cyclone ring, abrasion-resistant construction, pulse-jet cleaning, and combustible dust explosion protection. ## FAQs ****What type of dust collector can be used for Gilsonite processing?**** In this application, AGC selected a CBR TubeJet® baghouse dust collector for a vacuum conveying process handling Gilsonite. The system provided the required filter area, abrasion protection, and combustible dust explosion protection. ******How can a baghouse reduce abrasion from conveyed materials?****** The system used a cyclonic inlet and internal cyclone ring to reduce wear on the collector housing and adjacent filter bags. The inlet and hopper were also constructed from 1/4-inch-thick abrasion-resistant steel. ******Why is filter area important when collecting sticky dust?****** According to AGC, Gilsonite is somewhat sticky and requires additional filter surface area to maintain high airflow through the baghouse. ******Can a dust collector be customized to replace existing equipment?****** Yes. In this case, Sly customized the collector and support legs to match the dimensions of the existing unit, allowing it to fit within a restricted installation area. ******What explosion protection considerations apply to combustible dust collectors?****** The replacement collector in this application was designed for combustible dust explosion protection and was described as MSHA/OSHA compliant according to NFPA 654, 68, and 69. ##### Custom Dust Collector Replaces Worn, Non-Compliant Unit [Download Case Study](https://www.slyinc.com/wp-content/uploads/2025/01/Case_History_Hydrocarbon_Resin1.pdf) ## Why Sly? ![](https://www.slyinc.com/wp-content/uploads/2024/07/Air-Pollution-Control-Gradient.png "Air-Pollution-Control-Gradient | Sly Air Pollution Control") --- Sly worked with AGC to develop a customized dust collection system that matched the dimensions of the existing equipment while addressing abrasion, filter wear, installation constraints, and combustible dust protection requirements. The custom fabrication allowed the new baghouse to serve as a direct replacement within the plant’s restricted installation space. [Request a Consultation](/contact) **Case Study Categories:** Mining & Minerals --- ### [Durable Loading Spouts Stand Up To Salt Air in Cayman Islands](https://www.slyinc.com/resources/case-studies/durable-loading-spouts-stands-up-to-salt-air-in-cayman-islands/) **Published:** March 25, 2026 **Author:** Mike Eaton **Excerpt:** National Cement's dockside import terminal in the Cayman Islands needed loading equipment that could withstand constant salt air, moisture, and abrasive cement particulate. Sly supplied four heavy-duty loading spouts with a 3-cable suspension design and paired them with epoxy-coated pulse-jet dust collectors engineered to handle hurricane-force winds — delivering a single-source solution that reduced downtime and outlasted the previous equipment. The client has returned for multiple repeat purchases. **Content:** ![Yellow industrial hoist with a spool of cable attached to a steel framework against a blue sky, likely part of an overhead crane system.](https://www.slyinc.com/wp-content/uploads/2026/03/Durable-Loading-Spouts-Hero.jpg "Durable-Loading-Spouts-Hero | Sly Air Pollution Control") # Durable Loading Spouts Stand Up To Salt Air in Cayman Islands ##### Industry: *Cement / Bulk Material Handling* --- ##### Application Bulk cement loading at the dockside import terminal ![Engineering diagram and 3D model of a vertical cable hoist drive system with an extendable frame and central motor components.](https://www.slyinc.com/wp-content/uploads/2026/03/Loading-Spout-CS-260x300.jpg "Loading-Spout-CS | Sly Air Pollution Control") ## Case Study Highlights ###### Four spouts handle most of the island’s cement ###### Designed for harsh salt air conditions ###### 3-cable system improves stability ###### Engineered for durability and heavy-duty use ###### Integrated dust collection solution ![](https://www.slyinc.com/wp-content/uploads/2024/07/Air-Pollution-Control-Gradient.png "Air-Pollution-Control-Gradient | Sly Air Pollution Control") ![](https://www.slyinc.com/wp-content/uploads/2024/08/Sly-Yellow-Callout-Arrow.jpg "Sly-Yellow-Callout-Arrow | Sly Air Pollution Control") ## The Challenge: ### Harsh Marine Environment Causing Equipment Failure National Cement Ltd. operates a dockside import terminal in Georgetown, Cayman Islands, where bulk cement is transferred from ships to transport trailers. The environment exposed equipment to constant salt air, moisture, and cement particulates, leading to frequent failures of existing loading spouts and risk of operational downtime. Challenges included: - **Constant exposure to salt air and moisture** - **Cement dust and airborne particulate accumulation** - **Frequent maintenance and equipment reliability issues** - **Need to avoid downtime during ship unloading** ![](https://www.slyinc.com/wp-content/uploads/2026/03/Vortex-Loading-Spout-4-cutout.png "Vortex Loading Spout-4-cutout | Sly Air Pollution Control") ![](https://www.slyinc.com/wp-content/uploads/2024/08/Sly-Yellow-Callout-Arrow.jpg "Sly-Yellow-Callout-Arrow | Sly Air Pollution Control") ## The Solution: ### Implementation of Durable Sly Loading Spouts and Dust Collection National Cement replaced its existing loading spouts with Sly loading spouts designed for durability in harsh environments. The system included a 3-cable suspension design for improved stability and heavy-duty construction. Sly also supplied pulse-jet dust collectors engineered with an epoxy coating and designed to withstand hurricane-force winds, providing a complete material-handling and dust-control solution. This approach provided several advantages: - **Improved durability in corrosive marine conditions** - **Enhanced stability with 3-cable suspension system** - **Single-source supplier for spouts and dust collectors** - **Custom engineering for environmental requirements** ![](https://www.slyinc.com/wp-content/uploads/2026/03/cayman-island-spout.jpg "cayman-island-spout | Sly Air Pollution Control")![](https://www.slyinc.com/wp-content/uploads/2026/03/cayman-island-salt-spout.jpg "cayman-island-salt-spout | Sly Air Pollution Control") ## System Specifications ##### [Spout Quantity](Contaminant:) **Four Sly loading spouts installed** ##### Spout Model **Model XP-8 spout for truck loading** ##### Dust Collectors **Two STJ-98-10 dust collectors** ##### Airflow Capacity **6200 CFM per dust collector** ##### Corrosion Protection **Epoxy-coated equipment for corrosion resistance** ##### Structural Design **Engineered for hurricane-force wind conditions** ![](https://www.slyinc.com/wp-content/uploads/2024/08/Sly-Yellow-Callout-Arrow.jpg "Sly-Yellow-Callout-Arrow | Sly Air Pollution Control") ## The Results: ### Reliable Operation in Demanding Coastal Conditions Sly equipment provided improved durability and reliability, enabling continuous operation during critical ship unloading periods while withstanding the harsh coastal environment. Key Results: - **Reduced downtime during ship unloading** - **Improved equipment longevity in salt air conditions** - **Increased operational reliability** - **Successful handling of the majority of the island cement** - **Confirmed satisfaction with multiple repeat purchases** ![](https://www.slyinc.com/wp-content/uploads/2024/08/loading-spout_425x300.png "loading-spout_425x300 | Sly Air Pollution Control") ## Why Sly Loading Spouts Work for Bulk Cement Loading Applications: Sly loading spouts are designed to handle fine, dusty materials such as cement while minimizing emissions and maintaining efficient material flow. Features such as telescoping internal stacking cones and compatibility with negative-pressure dust-collection systems support clean, controlled loading operations. Their heavy-duty construction and customizable design make them suitable for challenging environments such as marine terminals. ## FAQs – Loading Spout Applications **What are loading spouts used for in cement applications?** Loading spouts are used to transfer bulk cement into trucks, trailers, or storage vessels while minimizing dust emissions. ****How do loading spouts help control dust?**** They can be integrated into dust-collection systems that use negative pressure to capture airborne particles during loading. ****What makes loading spouts suitable for harsh environments?**** Durable materials, protective coatings, and robust mechanical designs help withstand corrosion, moisture, and abrasive materials. ****What is a telescoping loading spout?**** A telescoping spout adjusts its length during loading to maintain proper positioning and reduce dust escape. ****Can loading spouts be customized for specific applications?**** Yes, designs can be modified to meet environmental, operational, and material handling requirements. ##### Case Study: Durable Loading Spouts Stands Up To Salt Air in Cayman Islands [Download Case Study](https://www.slyinc.com/wp-content/uploads/2025/01/Sly_Mini_Case_History_Cement1.pdf) ## Why Sly? ![](https://www.slyinc.com/wp-content/uploads/2024/07/Air-Pollution-Control-Gradient.png "Air-Pollution-Control-Gradient | Sly Air Pollution Control") --- Sly provides engineered air-pollution control and bulk-material-handling solutions designed for durability and performance. With in-house manufacturing capabilities, Sly can accommodate custom specifications and deliver integrated systems, including loading spouts and dust collectors, to meet the demands of complex industrial applications. [Request a consultation](/contact) **Case Study Categories:** Cement / Bulk Material Handling --- ### [Efficient Dryer Ventilation with Sly’s Custom Collector](https://www.slyinc.com/resources/case-studies/efficient-dryer-ventilation-with-slys-custom-collector/) **Published:** August 26, 2024 **Author:** Mike Eaton **Excerpt:** A limestone supplier needed a dust collector that could handle the high airflow demands of a fluid bed dryer while capturing and recycling fines back into the production process. Sly designed a customized TubeJet® collector at 62,000 ACFM with an oversized clean air plenum, abrasion-resistant inlet components, and a trough hopper with screw conveyor for single-point product discharge. Filter bags ran 22 months of continuous operation before the first change was needed. **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/09/case-studies-hero-1024x341.jpg "case studies hero | Sly Air Pollution Control") # Efficient Dryer Ventilation with Sly’s Custom Collector ##### Industry: Limestone Processing --- ##### Application Fluid Bed Dryer Ventilation and Dust Collection ![Blue baghouse filter assembly on a steel frame, with angled top housings and visible filter bags inside; overlaid technical blueprint lines indicate dimensions like inlet, filter bag area, and inside case.](https://www.slyinc.com/wp-content/uploads/2026/03/Rectangular-Baghouse-CS-260x300.jpg "Rectangular-Baghouse-CS | Sly Air Pollution Control") ## Case Study Highlights ###### Customized STJ-4717-10 TubeJet® collector ###### Managed 62,000 ACFM airflow ###### Reduced inlet abrasion effectively ###### Recycled fines into processing cycle ###### Filter bags lasted 22 months ###### Met air pollution standards ![](https://www.slyinc.com/wp-content/uploads/2024/08/Sly-Yellow-Callout-Arrow.jpg "Sly-Yellow-Callout-Arrow | Sly Air Pollution Control") ## The Challenge: ### ****Managing Dryer Emissions and Material Recovery**** A limestone supplier needed to meet air pollution emission limits while improving production efficiency. The facility required a dust collection solution capable of collecting and recycling fines generated during the drying and cooling process of a fluid bed dryer. Problems included: - **Excess fines released during drying and cooling** - **Need to meet emission regulations** - **High airflow ventilation requirements** - **Abrasive inlet loading conditions** Previous collectors required annual filter replacements, creating maintenance difficulties. Some systems are also exhausted through roof stacks, increasing permitting requirements and operational complexity. The customer also required a system capable of handling varying inlet loading conditions while maintaining long-term reliability and efficient operation. ![dryer ventilation](https://www.slyinc.com/wp-content/uploads/2024/08/STJ-Limestone-Dryer2.jpg "STJ-Limestone-Dryer2 | Sly Air Pollution Control") ![](https://www.slyinc.com/wp-content/uploads/2024/08/Sly-Yellow-Callout-Arrow.jpg "Sly-Yellow-Callout-Arrow | Sly Air Pollution Control") ## The Solution: ### ****Customized TubeJet**® **Collector for Dryer Ventilation**** Sly worked directly with the customer through multiple technical meetings to develop a customized dust collection system tailored to the dryer application. An STJ-4717-10 TubeJet® collector was selected and modified to fit the facility’s airflow and space requirements. This approach provided several advantages: - **Customized clean air plenum design** - **Large outlet accommodated 62,000 ACFM airflow** - **Abrasion-resistant inlet diffuser construction** - **Demand-based cleaning reduced compressed air usage** Because of the collector’s large size, Sly also furnished a trough hopper, screw conveyor, and rotary valve to provide single-point discharge of collected material back into the limestone processing cycle. ![TubeJet Air Pollution Control System](https://www.slyinc.com/wp-content/uploads/2024/08/STJ-Limestone-Dryer1.jpg "STJ-Limestone-Dryer1 | Sly Air Pollution Control") ## System Specifications ##### [Collector Model](Contaminant:) **STJ-4717-10 TubeJet® collector** ##### Air-to-Cloth Ratio **5.2:1 operating ratio** ##### Airflow Capacity **62,000 ACFM handling capability** ##### Inlet Velocity **Below 3,000 FPM design** ##### Abrasion Protection **Abrasion-resistant steel diffuser** ##### Monitoring Equipment **Differential pressure and broken bag detection** ![](https://www.slyinc.com/wp-content/uploads/2024/08/Sly-Yellow-Callout-Arrow.jpg "Sly-Yellow-Callout-Arrow | Sly Air Pollution Control") ## The Results: ### ****Reliable Long-Term Performance and Efficient Dust Collection**** The customized dust collection system efficiently processed material while meeting air pollution control standards and supporting long-term operational reliability. Key Results: - **Met air pollution emission limits** - **Recycled collected fines into production** - **Reduced compressed air consumption** - **Extended filter bag service life** - **Achieved 22 months continuous bag operation** The collector has operated successfully since the summer of 2013 with excellent reported performance. ![Efficient Fluid Bed Dryer Ventilation](https://www.slyinc.com/wp-content/uploads/2024/08/STJ-Limestone-Dryer.jpg "STJ-Limestone-Dryer | Sly Air Pollution Control") ## ****Why STJ-4717-10 TubeJet**® **Collectors Work for Fluid Bed Dryer Applications**** The STJ-4717-10 TubeJet® collector was well-suited for this fluid bed dryer application because it could accommodate high airflow rates while maintaining efficient dust collection. The customized plenum, abrasion-resistant components, and flexible cleaning controls allowed the system to manage demanding inlet conditions and varying loading rates while supporting long-term filter life and operational efficiency. ## FAQs ******What is a TubeJet**® **dust collector used for?****** TubeJet® dust collectors capture airborne particulate from industrial processes while maintaining airflow and supporting emissions compliance ********Why is abrasion resistance important in dryer dust collection systems?******** Abrasion resistance helps protect collector components from wear caused by high-volume particulate loading and abrasive materials. ********How does demand-based filter cleaning improve performance?******** Demand-based cleaning reduces compressed air usage and can extend filter bag life by cleaning only when pressure drop conditions require it. ********Can collected fines be returned to the production process?******** manufacturing process. ********What industries use customized dust collectors?******** Customized dust collectors are commonly used in industries including minerals processing, cement, aggregates, chemicals, food processing, and manufacturing. ##### Custom Collector Design for Efficient Dryer Ventilation [Download Case Study](https://www.slyinc.com/wp-content/uploads/2025/01/Sly_Mini_Case_History_Limestone1.pdf) ## Why Sly? ![](https://www.slyinc.com/wp-content/uploads/2024/07/Air-Pollution-Control-Gradient.png "Air-Pollution-Control-Gradient | Sly Air Pollution Control") --- Sly designs and manufactures industrial dust collection systems engineered for customized application requirements. With experience across a wide range of industrial processes, Sly provides fabric filter dust collectors, baghouses, cartridge collectors, wet scrubbers, bulk loading spouts, and aftermarket parts tailored to specific operational needs. All products are engineered and fabricated to order in Sly’s manufacturing facility in Mathiston, Mississippi. [Request a Consultation](/contact) --- ### [Pleated Bags Improve Dust Collection Performance at Novamet Specialty Products](https://www.slyinc.com/resources/case-studies/pleated-bags-are-not-the-same-as-cartridges-its-all-in-the-design/) **Published:** August 26, 2024 **Author:** Mike Eaton **Excerpt:** Novamet was losing valuable nickel powder to inefficient filtration and dealing with frequent, messy filter changes under their existing dust collectors. Sly installed six TubeJet® collectors with pleated filter bags and custom HEPA housing transitions for indoor air recirculation. The original filters have been in continuous service since 2006 and require cleaning only once a month, delivering significant savings in maintenance labor and recovered product. **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/09/case-studies-hero-1024x341.jpg "case studies hero | Sly Air Pollution Control") # Pleated Bags Improve Dust Collection Performance at Novamet Specialty Products ##### Industry: Metal Powders & Specialty Materials Manufacturing --- ##### Application Nickel Powder and Metallic Material Dust Collection ![Blue baghouse filter assembly on a steel frame, with angled top housings and visible filter bags inside; overlaid technical blueprint lines indicate dimensions like inlet, filter bag area, and inside case.](https://www.slyinc.com/wp-content/uploads/2026/03/Rectangular-Baghouse-CS-260x300.jpg "Rectangular-Baghouse-CS | Sly Air Pollution Control") ## Case Study Highlights ###### TubeJet® collectors installed ###### Operating since 2006 ###### Monthly pulse cleaning only ###### Improved product recovery efficiency ###### Utility savings through air recirculation ![](https://www.slyinc.com/wp-content/uploads/2024/07/Air-Pollution-Control-Gradient.png "Air-Pollution-Control-Gradient | Sly Air Pollution Control") ![](https://www.slyinc.com/wp-content/uploads/2024/08/Sly-Yellow-Callout-Arrow.jpg "Sly-Yellow-Callout-Arrow | Sly Air Pollution Control") ## The Challenge: ### **Frequent Maintenance and Product Loss from Existing Dust Collectors** Novamet Specialty Products manufactures precision-engineered nickel powder, metallic flake, coated materials, and nickel oxides. Efficient dust collection and recovery of valuable materials were critical requirements for the process. Existing cartridge and baghouse collectors created operational and maintenance challenges. Problems included: - **Frequent filter replacements required** - **Valuable product trapped in filters** - **Messy collector maintenance procedures** - **Ongoing air quality permit requirement** Previous collectors required annual filter replacements, creating maintenance difficulties. Some systems are also exhausted through roof stacks, increasing permitting requirements and operational complexity. ![pleated bags](https://www.slyinc.com/wp-content/uploads/2024/08/Sly-pleated-bags-collector.jpg "Sly-pleated-bags-collector | Sly Air Pollution Control") ![](https://www.slyinc.com/wp-content/uploads/2024/08/Sly-Yellow-Callout-Arrow.jpg "Sly-Yellow-Callout-Arrow | Sly Air Pollution Control") ## The Solution: ### **TubeJet® Dust Collectors with Pleated Filter Bags** Sly representative Joe Caccamese of Cino Equipment recommended Sly’s TubeJet dust collectors equipped with pleated filter bags. Although Novamet initially associated pleated bags with previous cartridge collector issues, the pleated bag configuration became the preferred solution due to limited headroom within the facility. This approach provided several advantages: - **Reduced maintenance requirements** - **Improved product recovery capability** - **Vertical filter removal configuration** - **Safe filtered air recirculation** Sly also supplied custom HEPA housing transitions, allowing Novamet to mount HEPA filters directly on the fan discharge and safely recirculate filtered plant air for additional utility savings. ![Sly Tubejet Collector](https://www.slyinc.com/wp-content/uploads/2024/12/1990-sly-tubejet-collector.png "1990-sly-tubejet-collector | Sly Air Pollution Control") ## System Specifications ##### [Collector Type](Contaminant:) **TubeJet® dust collectors** ##### Filter Design **Pleated filter bags** ##### Quantity Installed **Six collectors** ##### HEPA Integration **Custom housing transitions** ##### Cleaning Method **Pulse jet cleaning** ##### Pulse Frequency **Once monthly operation** ![](https://www.slyinc.com/wp-content/uploads/2024/08/Sly-Yellow-Callout-Arrow.jpg "Sly-Yellow-Callout-Arrow | Sly Air Pollution Control") ## The Results: ### **Long-Term Filter Performance and Reduced Operating Costs** The Sly TubeJet® collectors significantly improved operational efficiency, reduced maintenance, and extended filter life at the Novamet facility. Key Results: - **Original filters still operating since 2006** - **Pulse cleaning required only monthly** - **Reduced maintenance labor requirements** - **Improved recovery of valuable metals** - **Lower utility costs from heat recovery** Novamet reported significant savings due to filter longevity, reduced maintenance requirements, and the ability to safely recirculate filtered plant air. ![TubeJet Air Pollution Control System](https://www.slyinc.com/wp-content/uploads/2024/08/HEPA-pleated-bag-tubejet.jpg "HEPA-pleated-bag-tubejet | Sly Air Pollution Control") ## **Why TubeJet® Dust Collectors Work for Metal Powder Dust Collection Applications** TubeJet® dust collectors with pleated filter bags provide efficient filtration and recovery for valuable metal powders and specialty materials. The pleated bag configuration supports high filtration efficiency while accommodating facilities with limited headroom. Reduced cleaning frequency and long filter life also help minimize maintenance requirements and operational costs. ## FAQs ****What are pleated filter bags used for in dust collection systems?**** Pleated filter bags are used to improve filtration efficiency and increase filter surface area in compact dust collection systems. ******How do pleated filter bags differ from cartridge filters?****** Pleated filter bags use a different structural design that can improve maintenance access, filter life, and cleaning performance depending on the application. ******Why is dust recovery important in metal powder manufacturing?****** Recovering valuable metal powders helps reduce material waste and improve process efficiency. ******What are the benefits of recirculating filtered plant air?****** Recirculating filtered air can reduce energy costs by recovering conditioned plant air while maintaining filtration performance. ******How often do pulse jet dust collectors require cleaning?****** Cleaning frequency depends on the application, dust loading, and collector design. In this case, pulse cleaning occurred only once per month. ##### Pleated Bags Improve Dust Collection Performance at Novamet Specialty Products [Download Case Study](https://www.slyinc.com/wp-content/uploads/2025/01/Sly_Mini_Case_History_Pleated_Bags1.pdf) ## Why Sly? ![](https://www.slyinc.com/wp-content/uploads/2024/07/Air-Pollution-Control-Gradient.png "Air-Pollution-Control-Gradient | Sly Air Pollution Control") --- Sly provides engineered dust-collection solutions for demanding industrial applications. TubeJet® dust collectors are built to support long filter life, efficient dust recovery, reduced maintenance, and flexible installation requirements. Custom engineering options, including HEPA integration and specialized collector configurations, help facilities optimize filtration performance and operational efficiency. [Request a Consultation](/contact) --- ### [Custom Venturi Scrubber for Spray Dryer Emissions](https://www.slyinc.com/resources/case-studies/venturi-scrubber-spray-dryer-emissions/) **Published:** March 25, 2026 **Author:** Mike Eaton **Excerpt:** A food flavoring manufacturer's spray dryer generated fine, sticky, hygroscopic particles that repeatedly blinded baghouse filters and degraded system performance. Sly replaced the dry collection approach with a custom stainless steel venturi wet scrubber, which achieved approximately 99% particulate removal efficiency and eliminated the filter-fouling problems entirely — providing stable, reliable emissions control suited to the material's challenging properties. **Content:** ![custom venturi scrubber](https://www.slyinc.com/wp-content/uploads/2024/08/custom-venturi-scrubber-case-study-photo-1-1024x768.jpg "custom-venturi-scrubber-case-study-photo-1 | Sly Air Pollution Control") # Custom Venturi Scrubber for Spray Dryer Emissions in Food Flavoring Production ##### Industry: *Food Processing* --- ##### Application Spray dryer exhaust particulate control for food flavorings ![Vertical industrial storage tank on a metal frame with a blue printed schematic overlay labeling gas inlet/outlet, water inlet, pressure tap, drain, and other components.](https://www.slyinc.com/wp-content/uploads/2026/03/Venturi-Wet-Scrubber-CS-260x300.jpg "Venturi-Wet-Scrubber-CS | Sly Air Pollution Control") ## Case Study Highlights ###### Captured fine, water-soluble flavoring particles (~5 microns) from spray dryer exhaust ###### Achieved approximately 99% particulate removal efficiency ###### Solved reliability issues caused by sticky, hygroscopic dust in dry collectors ###### Replaced ineffective cyclone and baghouse performance with a custom venturi scrubber solution ###### Provided stable airflow with a 10 in. water gauge pressure drop ![](https://www.slyinc.com/wp-content/uploads/2024/07/Air-Pollution-Control-Gradient.png "Air-Pollution-Control-Gradient | Sly Air Pollution Control") ![](https://www.slyinc.com/wp-content/uploads/2024/08/Sly-Yellow-Callout-Arrow.jpg "Sly-Yellow-Callout-Arrow | Sly Air Pollution Control") ## The Challenge: ### Capturing Fine, Sticky Flavoring Particles A food manufacturing facility producing powdered flavorings relied on a spray drying process that generated extremely fine particulate emissions. These particles were **water-soluble, hygroscopic, and sticky**, making them difficult to capture with traditional dry dust collection equipment. The plant initially attempted to control emissions using a cyclone and baghouse system. However, the fine particles often bypassed the cyclone, causing operational issues in the baghouse. Common problems included: - **Filter blinding from sticky particulate** - **Increased maintenance and downtime** - **Reduced collection efficiency** - **Overloading of the dry dust collection system** The facility needed a solution capable of reliably capturing fine flavoring particles while maintaining stable operation with the spray dryer. ![](https://www.slyinc.com/wp-content/uploads/2024/08/Venturi-Particulate-Schematic.jpg "Venturi-Particulate-Schematic | Sly Air Pollution Control") ![](https://www.slyinc.com/wp-content/uploads/2024/08/Sly-Yellow-Callout-Arrow.jpg "Sly-Yellow-Callout-Arrow | Sly Air Pollution Control") ## The Solution: ### A Custom Venturi Scrubber System Sly engineered and fabricated a custom venturi wet scrubber system designed specifically for the spray dryer exhaust conditions. Venturi scrubbers are particularly effective in applications involving fine particulate and challenging material properties, including sticky, volatile, or hygroscopic materials. The system works by accelerating exhaust gas through a venturi throat, where it contacts scrubbing liquid at high velocity. This creates intense mixing between the droplets and airborne particles, allowing even very fine particulate to be captured and removed from the gas stream. The wet collection approach provided several advantages: - **Effective removal of low-density particles around 5 microns** - **Elimination of filter blinding associated with dry collectors** - **Ability to tolerate elevated temperatures from the spray dryer** - **Simultaneous particulate removal and gas absorption** Sly designed the scrubber to integrate seamlessly into the facility’s existing process while maintaining stable airflow and predictable operating conditions. ![](https://www.slyinc.com/wp-content/uploads/2024/08/venturi-scrubber-tank.jpg "venturi-scrubber-tank | Sly Air Pollution Control")![](https://www.slyinc.com/wp-content/uploads/2024/08/venturi-scrubber-component.jpg "venturi-scrubber-component | Sly Air Pollution Control")![](https://www.slyinc.com/wp-content/uploads/2024/08/venturi-scrubber-tanks.jpg "venturi-scrubber-tanks | Sly Air Pollution Control") ## System Specifications ##### [Contaminant](Contaminant:) **Water-soluble food flavoring particulate** ##### Upstream Process **Spray drying** ##### Collection Method **Venturi scrubber** ##### Removal Efficiency **~99% for particles >5 microns** ##### Material of Construction **10-gauge 304L stainless steel** ##### Operating Pressure Drop **10 inches water gauge** ![](https://www.slyinc.com/wp-content/uploads/2024/08/Sly-Yellow-Callout-Arrow.jpg "Sly-Yellow-Callout-Arrow | Sly Air Pollution Control") ## The Results: ### Reliable Emissions Control for Spray Dryer Exhaust The custom venturi scrubber delivered immediate performance improvements and long-term operational reliability. Key results included: - **Approximately 99% particulate capture efficiency** - **Reliable removal of fine flavoring particulates** - **Elimination of filtration issues associated with dry collection systems** - **Stable airflow conditions across the spray dryer exhaust** - **Reduced particulate emissions from the manufacturing process** By switching to a wet scrubbing solution, the facility was able to control emissions while improving overall system reliability. ![](https://www.slyinc.com/wp-content/uploads/2024/06/wet-scrubber.jpg "wet-scrubber | Sly Air Pollution Control") ## Why Venturi Scrubbers Work for Spray Dryer Applications Spray dryer exhaust streams often contain fine, sticky, or hygroscopic particles that can quickly foul traditional filtration systems. Venturi scrubbers provide an effective alternative because they: - **Capture very fine particulate** - **Handle sticky or condensable materials** - **Operate reliably at elevated temperatures** - **Combine particulate and gas-phase pollutant removal** These characteristics make venturi scrubbers well-suited for food processing applications involving flavorings, powders, and specialty ingredients. ## FAQs – Venturi Scrubber for Spray Dryer Applications **Why are venturi scrubbers effective for spray dryer exhaust streams?** Venturi scrubbers are highly effective for spray dryer emissions because they capture extremely fine particulate through high-velocity gas and liquid interaction. The intense mixing inside the venturi throat allows droplets to collide with and capture particles that may bypass cyclones or overload baghouses. ****When should a wet scrubber be used instead of a baghouse or cyclone?**** Wet scrubbers are often preferred when the particulate is fine, sticky, hygroscopic, or water-soluble, which can cause blinding and reliability issues in dry filtration systems. They are also useful when a process involves high temperatures or requires simultaneous gas absorption. ****What particle size can a venturi scrubber effectively capture?**** Venturi scrubbers can capture very fine particulate, often 5 microns or smaller, depending on system design, liquid injection rate, and pressure drop. ****Can a venturi scrubber handle sticky or hygroscopic materials like food flavorings?**** Yes. Wet scrubbers are particularly well-suited for materials that are sticky, condensable, or hygroscopic, since the liquid-collection method prevents the buildup and filter blinding that often occur in dry dust-collection systems. ****What factors determine the performance of a venturi scrubber?**** Key design factors include gas velocity, pressure drop, liquid-to-gas ratio, droplet size, and venturi throat geometry. Proper engineering ensures the scrubber achieves high particulate removal efficiency while maintaining stable airflow conditions. ##### Case Study: Custom Venturi Scrubber for Spray Dryer Emissions [Download Case Study](https://www.slyinc.com/wp-content/uploads/2026/03/SLY-Venturi-Food-Flavorings.pdf) ## Why Sly? ![](https://www.slyinc.com/wp-content/uploads/2024/07/Air-Pollution-Control-Gradient.png "Air-Pollution-Control-Gradient | Sly Air Pollution Control") --- For nearly 150 years, Sly has engineered air pollution control solutions for demanding industrial applications. From dust collectors to wet scrubbers, our team designs systems that match the realities of each process rather than forcing standard equipment into complex environments. If your process involves **fine particulate, sticky materials, or spray drying**, our engineers can help identify the right air pollution control solution. [Request a consultation](/contact) --- ### [Custom Dust Collection System for a Major Tire Manufacturer](https://www.slyinc.com/resources/case-studies/custom-dust-collection-system-for-a-major-tire-manufacturer/) **Published:** March 25, 2026 **Author:** Mike Eaton **Excerpt:** A major tire plant needed to control combustible carbon black dust generated indoors, with no option to vent externally and severe headroom constraints. Sly engineered a compact, bottom-loaded fabric filter baghouse with flameless explosion venting, HEPA after-filtration for safe indoor air recirculation, and a footprint sized to fit within the existing facility — delivering a compliant, space-efficient system without structural modifications. **Content:** ![](https://www.slyinc.com/wp-content/uploads/2026/03/carbon-1-1-768x1024.jpg "carbon 1 | Sly Air Pollution Control") # Custom Dust Collection System for a Major Tire Manufacturer ##### Industry: Tire Manufacturing --- ##### Application Indoor Carbon Black Dust Collection ![3D rendering of a blue industrial hopper on a metal stand with a conical bottom and discharge outlet; blueprint labels alongside show inlet, body, outlet and discharge flange.](https://www.slyinc.com/wp-content/uploads/2026/03/Cylindrical-Baghouse-CS-260x300.jpg "Cylindrical-Baghouse-CS | Sly Air Pollution Control") ## Case Study Highlights ###### Controlled combustible carbon black dust indoors ###### Fit system within severe headroom constraints ###### Enabled safe indoor air recirculation ###### Integrated flameless explosion protection ###### Delivered compact, compliant system design ![](https://www.slyinc.com/wp-content/uploads/2024/07/Air-Pollution-Control-Gradient.png "Air-Pollution-Control-Gradient | Sly Air Pollution Control") ![](https://www.slyinc.com/wp-content/uploads/2024/08/Sly-Yellow-Callout-Arrow.jpg "Sly-Yellow-Callout-Arrow | Sly Air Pollution Control") ## The Challenge: ### Capturing Combustible Carbon Black Indoors A major tire manufacturer needed to control airborne carbon black particulate generated from indoor equipment. Dust released from vented hoods created air quality concerns, increased housekeeping demands, and introduced combustible dust risks. The system also needed to operate within tight spatial constraints while safely returning filtered air indoors. Challenges included: - **Combustible dust requiring explosion protection** - **Limited headroom for equipment installation** - **No option for outdoor venting** - **Indoor air return required high filtration integrity** ![](https://www.slyinc.com/wp-content/uploads/2024/06/carbon-black-dust-collection.png "carbon-black-dust-collection") ![](https://www.slyinc.com/wp-content/uploads/2024/08/Sly-Yellow-Callout-Arrow.jpg "Sly-Yellow-Callout-Arrow | Sly Air Pollution Control") ## The Solution: ### Custom-Engineered Low-Profile Baghouse System SLY engineered a fabric filter baghouse (CBR) tailored to the facility’s spatial and safety constraints. The system design incorporated explosion protection, compact configuration, and high-efficiency filtration to enable safe indoor operation without requiring structural modifications. This approach provided several advantages: - **Bottom-loaded design minimized vertical space requirements** - **Flameless vents enabled safe indoor pressure relief** - **Optimized Pred reduced vent quantity and footprint** - **HEPA filtration ensured safe air recirculation** ![](https://www.slyinc.com/wp-content/uploads/2026/03/carbon-black.jpg "carbon-black | Sly Air Pollution Control")![](https://www.slyinc.com/wp-content/uploads/2026/03/carbon-1.jpg "carbon-1 | Sly Air Pollution Control") ## System Specifications ##### [Material Type](Contaminant:) **Carbon black particulate** ##### Filter Media **Treated polyester with grounded wire** ##### Collection Method **Fabric filter baghouse (CBR)** ##### Airflow Capacity **4,600 CFM** ##### Dust Discharge **Double dump valve with screw conveyor** ##### Installation **Indoor, limited headroom environment** ![](https://www.slyinc.com/wp-content/uploads/2024/08/Sly-Yellow-Callout-Arrow.jpg "Sly-Yellow-Callout-Arrow | Sly Air Pollution Control") ## The Results: ### Safer Air and Space-Efficient Dust Collection The system met operational, safety, and spatial requirements while maintaining reliable performance in a constrained indoor environment. Key Results: - **Improved indoor air quality for personnel** - **Reduced equipment dust accumulation** - **Achieved compliant explosion protection indoors** - **Compact system fit existing facility constraints** - **Delivered integrated, ready-to-operate system** ![Sly-CBR-rendering](https://www.slyinc.com/wp-content/uploads/2024/11/Sly-CBR-rendering.jpg "Sly-CBR-rendering | Sly Air Pollution Control") ## Why Fabric Filter Baghouse (CBR) Works for Indoor Carbon Black Dust Collection Applications Fabric filter baghouses are well-suited for capturing fine particulate such as carbon black while maintaining high filtration efficiency. In indoor applications, they can be configured with additional safety and filtration components, such as flameless venting and HEPA after-filters, to support safe air recirculation and compliance with combustible dust standards. ## FAQs **What is carbon black and why is it hazardous?** Carbon black is a fine particulate used in manufacturing that can become combustible when dispersed in air, requiring proper dust collection and explosion protection. ****Why is flameless explosion venting used indoors?**** Flameless vents allow pressure relief during a deflagration while containing flame and heat, making them suitable for indoor installations. ****What is a baghouse dust collector?**** A baghouse uses fabric filters to capture dust particles from an airstream, providing high-efficiency particulate removal. ****Why is HEPA filtration added after a baghouse?**** HEPA filters provide an additional level of filtration to ensure very fine particles are removed before air is recirculated indoors. ****What factors affect dust collection system design?**** Key factors include dust type, explosibility, airflow requirements, space constraints, and whether air is recirculated. ##### Case Study: Low-Headroom Baghouse for Carbon Black Handling [Download Case Study](https://www.slyinc.com/wp-content/uploads/2026/03/sly-carbon-black-case-study.pdf) ## Why Sly? ![](https://www.slyinc.com/wp-content/uploads/2024/07/Air-Pollution-Control-Gradient.png "Air-Pollution-Control-Gradient | Sly Air Pollution Control") --- Carbon black is one of the most challenging dusts to manage safely. With more than 150 years of experience in air pollution control, Sly applies **practical engineering** and **application-specific design** to **complex dust collection challenges**. Each system is engineered around real-world constraints, including combustible dust hazards, limited installation space, and indoor air return requirements. [Request a consultation](/contact) **Case Study Categories:** Air Quality --- ## Videos ### [Why Choose Sly?](https://www.slyinc.com/resources/videos/why-choose-sly/) **Published:** August 26, 2024 **Author:** sitemanager@wpmanager.io **Excerpt:** Learn more about the products, services and benefits offered by Sly. **Content:** # **Why Choose Sly?** Learn more about the products, services and benefits offered by Sly. --- ### [Total Dust Management](https://www.slyinc.com/resources/videos/total-dust-management/) **Published:** January 24, 2022 **Author:** sitemanager@wpmanager.io **Excerpt:** Total dust management is about taking a full-service, systematic approach to dust control where air quality experts help you specify the right collector for the job. Watch this quick video for highlights, then go to our blog for more information. **Content:** # **Total Dust Management** Total dust management is about taking a full-service, systematic approach to dust control where air quality experts help you specify the right collector for the job. Watch this quick video for highlights, then go to our blog for more information. --- ### [The Importance of Maintenance](https://www.slyinc.com/resources/videos/the-importance-of-maintenance/) **Published:** April 1, 2022 **Author:** sitemanager@wpmanager.io **Excerpt:** The importance of having an inspection/maintenance program for your dust collector cannot be understated. **Content:** # The Importance of Maintenance The importance of having an inspection/maintenance program for your dust collector cannot be understated. Depending on the issue, dust collector down time caused by maintenance issues can be catastrophic, costing a company days– or even weeks– of missed production while making repairs and/or waiting on critical components like filters to arrive. Because of this, it’s crucial to keep spare parts on hand, conduct daily monitoring, and perform scheduled maintenance on your dust collectors. --- ### [The Anatomy of an Impinjet Wet Scrubber](https://www.slyinc.com/resources/videos/the-anatomy-of-an-impinjet-wet-scrubber/) **Published:** November 5, 2020 **Author:** sitemanager@wpmanager.io **Excerpt:** Look inside Sly's Impinjet Wet Scrubber to see how it works. **Content:** # **The Anatomy of an Impinjet Wet Scrubber** Look inside Sly’s Impinjet Wet Scrubber to see how it works. --- ### [The Anatomy of a Baghouse](https://www.slyinc.com/resources/videos/the-anatomy-of-a-baghouse/) **Published:** September 5, 2019 **Author:** sitemanager@wpmanager.io **Excerpt:** What’s actually IN a baghouse-style dust collector and how does it work? In this walkthrough, we give an overview of the anatomy of a baghouse system. **Content:** # The Anatomy of a Baghouse What’s actually IN a baghouse-style dust collector and how does it work? In this walkthrough, we give an overview of the anatomy of a baghouse system. --- ### [Start-up Procedure for a Dust Collector or Bag House](https://www.slyinc.com/resources/videos/start-up-procedure-for-a-dust-collector-or-bag-house/) **Published:** October 5, 2011 **Author:** sitemanager@wpmanager.io **Excerpt:** Proper start-up procedure for a Sly dust collector or baghouse. Three versions: 1. Start-up using a pre-coating material, 2. Start-up for a Dryer or Dryer/Cooler application, and 3. Start-up using no pre-coating material. **Content:** # Start-up Procedure for a Dust Collector or Bag House Proper start-up procedure for a Sly dust collector or baghouse. Three versions: 1. Start-up using a pre-coating material, 2. Start-up for a Dryer or Dryer/Cooler application, and 3. Start-up using no pre-coating material. --- ### [Sly Incorporated Dry Filters & Dust Collectors](https://www.slyinc.com/resources/videos/sly-incorporated-dry-filters-dust-collectors/) **Published:** August 19, 2024 **Author:** sitemanager@wpmanager.io **Content:** # Sly Incorporated Dry Filters & Dust Collectors --- ### [Sly Envelope Bag Change-out Instructions](https://www.slyinc.com/resources/videos/sly-envelope-bag-change-out-instructions/) **Published:** September 26, 2012 **Author:** sitemanager@wpmanager.io **Excerpt:** How to change-out a Sly envelope bag type dust collector. Shaker (TDS bag)/ Dynaclone (ABC bag) / Pactecon (MP bag). **Content:** # Sly Envelope Bag Change-out Instructions How to change-out a Sly envelope bag type dust collector. Shaker (TDS bag)/ Dynaclone (ABC bag) / Pactecon (MP bag). --- ### [Pulse Pipe & Gripper Morris Clamp Installation Instructions](https://www.slyinc.com/resources/videos/pulse-pipe-gripper-morris-clamp-installation-instructions/) **Published:** March 27, 2018 **Author:** sitemanager@wpmanager.io **Excerpt:** How to correctly install the cleaning system pulse pipes and Gripper style Morris clamps on a Sly STJ dust collector after a filter bag change or maintenance event. **Content:** # Pulse Pipe & Gripper Morris Clamp Installation Instructions How to correctly install the cleaning system pulse pipes and Gripper style Morris clamps on a Sly STJ dust collector after a filter bag change or maintenance event. --- ### [Installation of a Top Load Industrial Cloth Filter Bag](https://www.slyinc.com/resources/videos/installation-of-a-top-load-industrial-cloth-filter-bag/) **Published:** December 28, 2009 **Author:** sitemanager@wpmanager.io **Excerpt:** Proper installation of a top loading or snap band style industrial tubular filter bag. Updated 2/21/13. **Content:** # Installation of a Top Load Industrial Cloth Filter Bag Proper installation of a top loading or snap band style industrial tubular filter bag. Updated 2/21/13. --- ### [NFPA Recommended Filter Bag Grounding Strap Design](https://www.slyinc.com/resources/videos/nfpa-recommended-filter-bag-grounding-strap-design/) **Published:** August 13, 2018 **Author:** sitemanager@wpmanager.io **Excerpt:** SLY, LLC recommends grounding industrial filter bags per the NFPA's recommended dual grounding mesh strap system. **Content:** # NFPA Recommended Filter Bag Grounding Strap Design SLY, LLC recommends grounding industrial filter bags per the NFPA’s recommended dual grounding mesh strap system. --- ### [Programing Sly’s MP-404 Control Timer ~ Basic Set-up](https://www.slyinc.com/resources/videos/programing-slys-mp-404-control-timer-basic-set-up/) **Published:** December 22, 2009 **Author:** sitemanager@wpmanager.io **Excerpt:** Basic set-up of SLY, LLC.’s MP-404 Control Timer. **Content:** # Programing Sly’s MP-404 Control Timer ~ Basic Set-up Basic set-up of SLY, LLC.’s MP-404 Control Timer. --- ### [Installation of a Bottom Load / Side Bag Removal Industrial Cloth Filter Bag](https://www.slyinc.com/resources/videos/installation-of-a-bottom-load-side-bag-removal-industrial-cloth-filter-bag/) **Published:** December 3, 2009 **Author:** sitemanager@wpmanager.io **Excerpt:** Proper installation of a bottom load or side bag removal style tubular filter bag for an industrial dust collector. Updated 2/21/13. **Content:** # Installation of a Bottom Load / Side Bag Removal Industrial Cloth Filter Bag Proper installation of a bottom load or side bag removal style tubular filter bag for an industrial dust collector. Updated 2/21/13. --- ### [Installation and Operation of Sly’s MP-404 Timer Pressure Module](https://www.slyinc.com/resources/videos/installation-and-operation-of-slys-mp-404-timer-pressure-module/) **Published:** July 11, 2011 **Author:** sitemanager@wpmanager.io **Excerpt:** Instruction on the operation and installation of SLY, LLC.’s differential pressure module for MP-404 on demand cleaning sequential dust collector timers baghouse timer delta P poper timer **Content:** # Installation and Operation of Sly’s MP-404 Timer Pressure Module Instruction on the operation and installation of SLY, LLC.’s differential pressure module for MP-404 on demand cleaning sequential dust collector timers baghouse timer delta P poper timer --- ### [How to Measure a Top Load Filter Bag](https://www.slyinc.com/resources/videos/how-to-measure-a-top-load-filter-bag/) **Published:** June 15, 2010 **Author:** sitemanager@wpmanager.io **Excerpt:** Measure a top load filter bag “tubular” for a quote from SLY, LLC. OEM manufacturer of Filter bags and cages. **Content:** # How to Measure a Top Load Filter Bag Measure a top load filter bag “tubular” for a quote from SLY, LLC. OEM manufacturer of Filter bags and cages. --- ### [How to Measure a Bottom Load Filter Bag](https://www.slyinc.com/resources/videos/how-to-measure-a-bottom-load-filter-bag/) **Published:** June 16, 2010 **Author:** sitemanager@wpmanager.io **Excerpt:** How to measure a bottom load filter bag. Correct method for measuring a bottom load tubular style filter bag for a quote. **Content:** # How to Measure a Bottom Load Filter Bag How to measure a bottom load filter bag. Correct method for measuring a bottom load tubular style filter bag for a quote. --- ### [How to Install and Remove a Split Cage for Tubular Filter Bags](https://www.slyinc.com/resources/videos/how-to-install-and-remove-a-split-cage-for-tubular-filter-bags/) **Published:** October 14, 2013 **Author:** sitemanager@wpmanager.io **Excerpt:** Proper way to install and remove a finger lock type split cage for a tubular filtration bag. **Content:** # How to Install and Remove a Split Cage for Tubular Filter Bags Proper way to install and remove a finger lock type split cage for a tubular filtration bag. --- ### [Corrosive Emissions: FRP Wet Scrubbers](https://www.slyinc.com/resources/videos/corrosive-emissions-frp-wet-scrubbers/) **Published:** February 23, 2024 **Author:** sitemanager@wpmanager.io **Excerpt:** Sly offers fiberglass reinforced plastic (FRP) wet scrubbers, which are indispensable to control industrial exhaust gases for environmental compliance. **Content:** # Corrosive Emissions: FRP Wet Scrubbers --- ### [Armour Guard Installation for SLY, LLC. Dynaclone Dust Collector](https://www.slyinc.com/resources/videos/armour-guard-installation-for-sly-llc-dynaclone-dust-collector/) **Published:** August 6, 2012 **Author:** sitemanager@wpmanager.io **Excerpt:** How to install the new amour guard loose channel for SLY, LLC Multi-Seal Dynaclone Envelope Bag. ABC-500 bag with the amour guard attached to it is no longer available. This video shows haw to install the replacmenet amour guard channel in place of the afixed amour guard on a standard ABC-999 bag. **Content:** # Armour Guard Installation for SLY, LLC. Dynaclone Dust Collector How to install the new amour guard loose channel for SLY, LLC Multi-Seal Dynaclone Envelope Bag. ABC-500 bag with the amour guard attached to it is no longer available. This video shows haw to install the replacmenet amour guard channel in place of the afixed amour guard on a standard ABC-999 bag. --- ### [Change a Diaphragm Valve Repair Kit](https://www.slyinc.com/resources/videos/change-a-diaphragm-valve-repair-kit/) **Published:** February 17, 2010 **Author:** sitemanager@wpmanager.io **Excerpt:** How to change a diaphragm valve repair kit. Short video showing correct procedure for changing air pulse diaphragm valve single or double diaphragm. **Content:** # Change a Diaphragm Valve Repair Kit How to change a diaphragm valve repair kit. Short video showing correct procedure for changing air pulse diaphragm valve single or double diaphragm. --- ### [150th Anniversary](https://www.slyinc.com/resources/videos/150th-anniversary/) **Published:** April 2, 2024 **Author:** sitemanager@wpmanager.io **Excerpt:** This year marks Sly's 150th anniversary of operations. Few companies in America can claim the distinction of surviving and thriving through 150 years of history. **Content:** # 150th Anniversary This year marks Sly’s 150th anniversary of operations. Few companies in America can claim the distinction of surviving and thriving through 150 years of history. Sly is among these rarities, with one researcher calculating that just 0.5% of all businesses reach the 100-year mark, much less an additional 50 years of continuous operations. This milestone caps a journey that began in an era of transformative change and has continued through economic upheavals, technological advancements and an evolving manufacturing landscape. --- ## News & Events ### [Battery Show 2026](https://www.slyinc.com/blog/news-events/battery-show-2026/) **Published:** August 31, 2026 **Author:** Mike Eaton **Excerpt:** Meet with a CPEG representative to discuss your air pollution control requirements at the Battery Show, October 12-15, 2026 at Huntington Place in Detroit, Michigan. **Content:** # The Battery Show Visit CPEG in Booth 4719 to speak with a representative about Sly air pollution control and emissions technology at the upcoming [Battery Show](https://www.thebatteryshow.com/). The show will be held October 12 – 15 at at Huntington Place in Detroit, Michigan. **From the Battery Show:** Join 16,000+ engineers, executives, and innovators October 12–15 at Huntington Place for four days of hands-on learning, strategic networking, and direct access to the technologies shaping the future of batteries and EVs. With 1,300+ exhibitors, 250+ expert speakers, and 140+ hours of education, every moment is designed to move your business forward. #### Stop by and see us! **CPEG Booth #4719** ![](https://www.slyinc.com/wp-content/uploads/2026/08/Battery-Show-2026-Logo.png "Battery-Show-2026-Logo") --- ### [Lithium Supply & Battery Raw Materials 2026](https://www.slyinc.com/blog/news-events/lithium-supply-conf/) **Published:** March 13, 2026 **Author:** p1ws **Excerpt:** June 22-25, 2026 • Red Rock Casino Resort & Spa, Las Vegas, NV **Content:** # Lithium Supply & Battery Raw Materials Conference Sly will be exhibiting at The Lithium Supply & Battery Raw Materials Show with CPEG. The show will be held June 22-25 at Red Rock Casino Resort & Spa in Las Vegas, Nevada. The 18th Lithium Supply & Battery Raw Materials Conference is the industry’s largest and longest-running event, bringing together 1000+ delegates from 550 companies across 40 countries. It’s where the leaders forge partnerships, close deals, and tackle the critical issues and innovations shaping the sector’s future. With insights on supply-demand dynamics, pricing trends, refining tech, battery innovation, recycling and sustainability, this is the must-attend event for growth and data-driven decisions. #### Stop by and see us! We will be exhibiting with other CPEG companies. Come by and see how we can engineer complete systems. ![](https://www.slyinc.com/wp-content/uploads/2026/03/Lithium-Supply-Battery-Raw-Materials_web.jpg "Lithium-Supply--Battery-Raw-Materials_web") --- ### [World of Coal Ash 2026](https://www.slyinc.com/blog/news-events/sme-minexchange-2/) **Published:** December 12, 2025 **Author:** p1ws **Excerpt:** May 4-7, 2026 • Central Bank Center, Lexington, KY **Content:** # World of Coal Ash 2026 Sly will be exhibiting at the 2026 World of Coal Ash in Lexington, Ky at Central Bank Center from May 4-7, 2026. #### Stop by and see us at Booth 125. We will be exhibiting with another CPEG company, Heyl Patterson Thermal Processing Equipment. For more information about this show, visit [World of Coal Ash website.](https://worldofcoalash.org/register/) ![](https://www.slyinc.com/wp-content/uploads/2025/12/WOCA-black-backgroundd-300x172.jpg "WOCA black backgroundd") --- ### [SME MinexChange](https://www.slyinc.com/blog/news-events/sme-minexchange/) **Published:** December 12, 2025 **Author:** p1ws **Excerpt:** February 22-25, 2026 • Salt Palace Convention Center, Salt Lake City, UT **Content:** # SME MinexChange Sly will be exhibiting at the 2026 SME MineXChange Annual Conference and Expo. The show will be held February 22-25, 2026 in Salt Lake City, Utah at the Salt Palace Convention Center. #### Stop by and see us at Booth 1629. We will be exhibiting as CPEG as well as other subsidiaries. For more information about this show, visit [SME MINEXCHANGE](https://www.iftevent.org/). ![](https://www.slyinc.com/wp-content/uploads/2025/12/SME_web-300x200.jpg "SME_web") --- ### [A 150-Year Legacy Forged Through Persistence, Innovation and Collaboration](https://www.slyinc.com/blog/news-events/a-150-year-legacy-forged-through-persistence-innovation-and-collaboration/) **Published:** August 20, 2024 **Author:** p1ws **Content:** ![](https://www.slyinc.com/wp-content/uploads/2024/08/sly-celebrating-150years.png "sly-celebrating-150years | Sly Air Pollution Control") # A 150-Year Legacy Forged Through Persistence, Innovation and Collaboration The world would be a dustier and more dangerous place without the knowledge base, skills, experience and innovative solutions that Sly, LLC has contributed to the industry. Sly has invented, designed and fabricated air pollution control equipment and systems for dust mitigation and gaseous emissions, partnering with thousands of companies in dozens of countries across the globe. This year marks Sly’s 150th anniversary of operations. Few companies in America can claim the distinction of not simply surviving, but thriving through 150 years of history. Sly is among these rarities, with one researcher calculating that just 0.5% of all businesses reach the 100-year mark, much less an additional 50 years of continuous operations. This milestone caps a journey that began in an era of transformative change and has continued through economic upheavals, technological advancements and an evolving manufacturing landscape. ## From pragmatism to precision: Sly’s founding years When William Wilfred Sly founded Sly in 1874, the United States emerged from the Civil War and stepped into rapid industrialization and expansion. This era, known as the Second Industrial Revolution, was markedly different from the First Industrial Revolution, which scholars say was characterized by a lack of scientific understanding. The Second Industrial Revolution, from 1870 to 1914, was grounded in the deliberate application of scientific principles. It saw the genesis of a more profound understanding of natural processes, leading to rapid improvements in quality and efficiency and the birth of entirely new industries. ## The formation of a dedicated business model Sly’s foundation during this pivotal time placed it at the heart of industrial transformation. Initially focused on manufacturing foundry equipment, Sly’s firsthand experience with dusty environments within manufacturing facilities led to a pioneering shift towards industrial dust collection and air pollution control solutions. In fact, in 1902, Sly was awarded the first U.S. patent for a cloth-style dust collector, marking the start of the company’s unique focus on emissions control technology. It was the first of many patents and technological innovations through the years. ## Overcoming adversity Sly’s journey has not been without its share of challenges. In 1920, tragedy struck when Wilfred C. Sly and George K. Fanner were gunned down during a robbery by members of the “Mayfield Rd. Mob” in a payroll holdup. This event entered Sly into the annals of Cleveland’s history. Additionally, in 1974, the company faced a significant setback when the plant on Train Ave in Cleveland caught fire, which was attributed to a union dispute. Despite these adversities, Sly demonstrated remarkable resilience, weathering economic downturns, market fluctuations, and personal hardships, emerging stronger after each trial and maintaining its position as a leader in emissions control technology. ## A beacon of innovation Throughout its illustrious history, Sly has been at the forefront of environmental technology, pioneering cutting-edge solutions to combat emissions and improve air quality. From the early days of industrial dust collection to developing advanced containment systems, Sly has remained committed to engineering excellence and sustainability, driving positive change in industries worldwide. [![](https://www.slyinc.com/wp-content/uploads/2024/08/sly-150-history-timeline.png "sly-150-history-timeline | Sly Air Pollution Control")](https://www.slyinc.com/about/history/?_gl=1%2A1u9foc0%2A_gcl_au%2AMTEwODkwNjA2LjE3MjM4MzAwMzQ.%2A_ga%2AMTkwNjQxMzUwNy4xNzIzODMwMDM1%2A_ga_0G2M9CMRL1%2AMTcyNDE4MDM1NS4xMS4xLjE3MjQxODM5MDAuNTAuMC4xNjU0ODI1Njg4#timeline) Engineers at Sly have developed several industry innovations. In 1956, they introduced the Roll Clean Dynaclone, which set new standards for dust collection efficiency. And the Venturi scrubber, introduced in 1976, was a true game-changer for pollution control. This scrubber utilizes the principle of fluid dynamics to achieve high collection efficiencies for removing particulate matter and gases from industrial emissions. Sly’s pulse jet baghouse dust collectors represent the pinnacle of industrial air filtration technology. These collectors have a broad range of capabilities and excel in environments up to 500°F. Incorporating a solid-state timer allows for precise pulse cleaning, optimizing filtration efficiency while minimizing compressed air consumption. Sly adds an extra touch to the technology for easier bag changes with a “no tools required” design. The design process for every project considers factors such as air volume, type of dust, dust loading and bulk density. At Sly, our engineering team meticulously evaluates each project, to fabricate a tailored solution that meets specifications and matches the environment where the collector will be installed for a durable, reliable solution. ## A deliberate focus on relationships What truly sets Sly apart is its technical expertise and commitment to building lasting relationships within the company and with its customers. With personalized customer service and tailored solutions to meet specific challenges, Sly has become a trusted partner for companies worldwide. This dedication to service and quality has earned Sly a reputation for reliability and excellence, with customer relationships that span decades. At Sly, internal relationships are equally as important as relationships with customers. Many employees count their tenure in decades rather than years. There is a purposeful effort to foster camaraderie and a shared sense of purpose and support for each other. Although it is no longer a family-owned company, the atmosphere at Sly is one of family. The company’s inclusive culture, rooted in diversity and collaboration, has helped cultivate a supportive environment where innovation thrives and employees are empowered to reach their full potential. ## Our message to you, our loyal customers As we commemorate our 150th anniversary, we look forward with optimism and determination, guided by a steadfast commitment to excellence and a vision for a brighter, cleaner future. With state-of-the-art facilities and a team of passionate professionals, we are poised to continue leading the way in environmental technology for the next 150 years and beyond. As we embark on the next chapter of our journey, we want to thank our customers, employees, and partners for their valuable contributions to our success and continued support. We recommit ourselves to shaping a safer, cleaner, more sustainable future for upcoming generations. Here’s to our next 150 years of serving our customers with environmental excellence! --- ## Site Builder ### [Blog Post Template](https://www.slyinc.com/blog/astra-advanced-hook/blog-post-template-2/) **Published:** December 11, 2025 **Author:** p1ws **Content:** # Blog Post Template # Blog Post Template Search by KeywordSearch #### Recent Posts - [The Complete Guide to Safest Dust Collection for Sticky Chemical Dust](https://www.slyinc.com/blog/the-complete-guide-to-safest-dust-collection-for-sticky-chemical-dust/) - [Impacts of Poor Industrial Dust Control](https://www.slyinc.com/blog/top-7-causes-of-poor-industrial-dust-control/) - [How Wet Scrubber Systems Remove Corrosive Fumes](https://www.slyinc.com/blog/how-wet-scrubber-systems-remove-corrosive-fumes/) - [Mining for Solutions: Effective Dust Control in Critical Mineral Operations](https://www.slyinc.com/blog/keep-it-clean-essential-strategies-for-rare-earth-and-critical-mineral-dust-control/) - [Don’t Get Dusted: How to Master Lithium Dust Collection for Safety and Efficiency](https://www.slyinc.com/blog/dont-get-dusted-how-to-master-lithium-dust-collection-for-safety-and-efficiency/) #### Categories - [Air Filter](https://www.slyinc.com/blog/category/air-filter/) - [Bag Filter Cleaning](https://www.slyinc.com/blog/category/bag-filter-cleaning/) - [Baghouse](https://www.slyinc.com/blog/category/baghouse/) - [Baghouse Screw Conveyors](https://www.slyinc.com/blog/category/baghouse-screw-conveyors/) - [Baghouse System](https://www.slyinc.com/blog/category/baghouse-system/) - [Biomass](https://www.slyinc.com/blog/category/biomass/) - [Blog](https://www.slyinc.com/blog/category/blog/) - [Cartridge Filters](https://www.slyinc.com/blog/category/cartridge-filters/) - [Cement Dust](https://www.slyinc.com/blog/category/cement-dust/) - [Dry Dust Collector](https://www.slyinc.com/blog/category/dry-dust-collector/) - [Dry Filter Systems](https://www.slyinc.com/blog/category/dry-filter-systems/) - [Dust Collection Equipment](https://www.slyinc.com/blog/category/dust-collection-equipment/) - [Dust Collection Replacement Parts](https://www.slyinc.com/blog/category/dust-collection-replacement-parts/) - [Dust Collection System](https://www.slyinc.com/blog/category/dust-collection-system/) - [Dust Collector](https://www.slyinc.com/blog/category/dust-collector/) - [Dust Collector Fire](https://www.slyinc.com/blog/category/dust-collector-fire/) - [Dust Collector Inspection](https://www.slyinc.com/blog/category/dust-collector-inspection/) - [Dust Collector Maintenance](https://www.slyinc.com/blog/category/dust-collector-maintenance/) - [Dust Collector Repair](https://www.slyinc.com/blog/category/dust-collector-repair/) - [Dust Collector Replacement Bags](https://www.slyinc.com/blog/category/dust-collector-replacement-bags/) - [Dust Collector System](https://www.slyinc.com/blog/category/dust-collector-system/) - [Dust Collectors](https://www.slyinc.com/blog/category/dust-collectors/) - [Dust Filters](https://www.slyinc.com/blog/category/dust-filters/) - [Explosive Dust](https://www.slyinc.com/blog/category/explosive-dust/) - [fabric filters](https://www.slyinc.com/blog/category/fabric-filters/) - [Filter cleaning](https://www.slyinc.com/blog/category/filter-cleaning/) - [Fly Ash](https://www.slyinc.com/blog/category/fly-ash/) - [Fly Ash Dust Control](https://www.slyinc.com/blog/category/fly-ash-dust-control/) - [FRP Scrubbers](https://www.slyinc.com/blog/category/frp-scrubbers/) - [impingement](https://www.slyinc.com/blog/category/impingement/) - [industrial applications](https://www.slyinc.com/blog/category/industrial-applications/) - [Industrial Dust Collector](https://www.slyinc.com/blog/category/industrial-dust-collector/) - [interstitial velocity](https://www.slyinc.com/blog/category/interstitial-velocity/) - [Lithium](https://www.slyinc.com/blog/category/lithium/) - [OSHA Compliance](https://www.slyinc.com/blog/category/osha-compliance/) - [Polyester Felt](https://www.slyinc.com/blog/category/polyester-felt/) - [Polyester Felt Filter](https://www.slyinc.com/blog/category/polyester-felt-filter/) - [Venturi](https://www.slyinc.com/blog/category/venturi/) - [Wet Scrubber](https://www.slyinc.com/blog/category/wet-scrubber/) Search by KeywordSearch #### Recent Posts - [The Complete Guide to Safest Dust Collection for Sticky Chemical Dust](https://www.slyinc.com/blog/the-complete-guide-to-safest-dust-collection-for-sticky-chemical-dust/) - [Impacts of Poor Industrial Dust Control](https://www.slyinc.com/blog/top-7-causes-of-poor-industrial-dust-control/) - [How Wet Scrubber Systems Remove Corrosive Fumes](https://www.slyinc.com/blog/how-wet-scrubber-systems-remove-corrosive-fumes/) - [Mining for Solutions: Effective Dust Control in Critical Mineral Operations](https://www.slyinc.com/blog/keep-it-clean-essential-strategies-for-rare-earth-and-critical-mineral-dust-control/) - [Don’t Get Dusted: How to Master Lithium Dust Collection for Safety and Efficiency](https://www.slyinc.com/blog/dont-get-dusted-how-to-master-lithium-dust-collection-for-safety-and-efficiency/) #### Categories - [Air Filter](https://www.slyinc.com/blog/category/air-filter/) - [Bag Filter Cleaning](https://www.slyinc.com/blog/category/bag-filter-cleaning/) - [Baghouse](https://www.slyinc.com/blog/category/baghouse/) - [Baghouse Screw Conveyors](https://www.slyinc.com/blog/category/baghouse-screw-conveyors/) - [Baghouse System](https://www.slyinc.com/blog/category/baghouse-system/) - [Biomass](https://www.slyinc.com/blog/category/biomass/) - [Blog](https://www.slyinc.com/blog/category/blog/) - [Cartridge Filters](https://www.slyinc.com/blog/category/cartridge-filters/) - [Cement Dust](https://www.slyinc.com/blog/category/cement-dust/) - [Dry Dust Collector](https://www.slyinc.com/blog/category/dry-dust-collector/) - [Dry Filter Systems](https://www.slyinc.com/blog/category/dry-filter-systems/) - [Dust Collection Equipment](https://www.slyinc.com/blog/category/dust-collection-equipment/) - [Dust Collection Replacement Parts](https://www.slyinc.com/blog/category/dust-collection-replacement-parts/) - [Dust Collection System](https://www.slyinc.com/blog/category/dust-collection-system/) - [Dust Collector](https://www.slyinc.com/blog/category/dust-collector/) - [Dust Collector Fire](https://www.slyinc.com/blog/category/dust-collector-fire/) - [Dust Collector Inspection](https://www.slyinc.com/blog/category/dust-collector-inspection/) - [Dust Collector Maintenance](https://www.slyinc.com/blog/category/dust-collector-maintenance/) - [Dust Collector Repair](https://www.slyinc.com/blog/category/dust-collector-repair/) - [Dust Collector Replacement Bags](https://www.slyinc.com/blog/category/dust-collector-replacement-bags/) - [Dust Collector System](https://www.slyinc.com/blog/category/dust-collector-system/) - [Dust Collectors](https://www.slyinc.com/blog/category/dust-collectors/) - [Dust Filters](https://www.slyinc.com/blog/category/dust-filters/) - [Explosive Dust](https://www.slyinc.com/blog/category/explosive-dust/) - [fabric filters](https://www.slyinc.com/blog/category/fabric-filters/) - [Filter cleaning](https://www.slyinc.com/blog/category/filter-cleaning/) - [Fly Ash](https://www.slyinc.com/blog/category/fly-ash/) - [Fly Ash Dust Control](https://www.slyinc.com/blog/category/fly-ash-dust-control/) - [FRP Scrubbers](https://www.slyinc.com/blog/category/frp-scrubbers/) - [impingement](https://www.slyinc.com/blog/category/impingement/) - [industrial applications](https://www.slyinc.com/blog/category/industrial-applications/) - [Industrial Dust Collector](https://www.slyinc.com/blog/category/industrial-dust-collector/) - [interstitial velocity](https://www.slyinc.com/blog/category/interstitial-velocity/) - [Lithium](https://www.slyinc.com/blog/category/lithium/) - [OSHA Compliance](https://www.slyinc.com/blog/category/osha-compliance/) - [Polyester Felt](https://www.slyinc.com/blog/category/polyester-felt/) - [Polyester Felt Filter](https://www.slyinc.com/blog/category/polyester-felt-filter/) - [Venturi](https://www.slyinc.com/blog/category/venturi/) - [Wet Scrubber](https://www.slyinc.com/blog/category/wet-scrubber/) --- ### [Blog Post Template](https://www.slyinc.com/blog/astra-advanced-hook/blog-post-template/) **Published:** November 9, 2024 **Author:** p1ws **Content:** # Blog Post Template # Blog Post Template SearchSearch ##### Recent Posts - [The Complete Guide to Safest Dust Collection for Sticky Chemical Dust](https://www.slyinc.com/blog/the-complete-guide-to-safest-dust-collection-for-sticky-chemical-dust/) - [Impacts of Poor Industrial Dust Control](https://www.slyinc.com/blog/top-7-causes-of-poor-industrial-dust-control/) - [How Wet Scrubber Systems Remove Corrosive Fumes](https://www.slyinc.com/blog/how-wet-scrubber-systems-remove-corrosive-fumes/) - [Mining for Solutions: Effective Dust Control in Critical Mineral Operations](https://www.slyinc.com/blog/keep-it-clean-essential-strategies-for-rare-earth-and-critical-mineral-dust-control/) - [Don’t Get Dusted: How to Master Lithium Dust Collection for Safety and Efficiency](https://www.slyinc.com/blog/dont-get-dusted-how-to-master-lithium-dust-collection-for-safety-and-efficiency/) ##### Categories - [Air Filter](https://www.slyinc.com/blog/category/air-filter/) - [Bag Filter Cleaning](https://www.slyinc.com/blog/category/bag-filter-cleaning/) - [Baghouse](https://www.slyinc.com/blog/category/baghouse/) - [Baghouse Screw Conveyors](https://www.slyinc.com/blog/category/baghouse-screw-conveyors/) - [Baghouse System](https://www.slyinc.com/blog/category/baghouse-system/) - [Biomass](https://www.slyinc.com/blog/category/biomass/) - [Blog](https://www.slyinc.com/blog/category/blog/) - [Cartridge Filters](https://www.slyinc.com/blog/category/cartridge-filters/) - [Cement Dust](https://www.slyinc.com/blog/category/cement-dust/) - [Dry Dust Collector](https://www.slyinc.com/blog/category/dry-dust-collector/) - [Dry Filter Systems](https://www.slyinc.com/blog/category/dry-filter-systems/) - [Dust Collection Equipment](https://www.slyinc.com/blog/category/dust-collection-equipment/) - [Dust Collection Replacement Parts](https://www.slyinc.com/blog/category/dust-collection-replacement-parts/) - [Dust Collection System](https://www.slyinc.com/blog/category/dust-collection-system/) - [Dust Collector](https://www.slyinc.com/blog/category/dust-collector/) - [Dust Collector Fire](https://www.slyinc.com/blog/category/dust-collector-fire/) - [Dust Collector Inspection](https://www.slyinc.com/blog/category/dust-collector-inspection/) - [Dust Collector Maintenance](https://www.slyinc.com/blog/category/dust-collector-maintenance/) - [Dust Collector Repair](https://www.slyinc.com/blog/category/dust-collector-repair/) - [Dust Collector Replacement Bags](https://www.slyinc.com/blog/category/dust-collector-replacement-bags/) - [Dust Collector System](https://www.slyinc.com/blog/category/dust-collector-system/) - [Dust Collectors](https://www.slyinc.com/blog/category/dust-collectors/) - [Dust Filters](https://www.slyinc.com/blog/category/dust-filters/) - [Explosive Dust](https://www.slyinc.com/blog/category/explosive-dust/) - [fabric filters](https://www.slyinc.com/blog/category/fabric-filters/) - [Filter cleaning](https://www.slyinc.com/blog/category/filter-cleaning/) - [Fly Ash](https://www.slyinc.com/blog/category/fly-ash/) - [Fly Ash Dust Control](https://www.slyinc.com/blog/category/fly-ash-dust-control/) - [FRP Scrubbers](https://www.slyinc.com/blog/category/frp-scrubbers/) - [impingement](https://www.slyinc.com/blog/category/impingement/) - [industrial applications](https://www.slyinc.com/blog/category/industrial-applications/) - [Industrial Dust Collector](https://www.slyinc.com/blog/category/industrial-dust-collector/) - [interstitial velocity](https://www.slyinc.com/blog/category/interstitial-velocity/) - [Lithium](https://www.slyinc.com/blog/category/lithium/) - [OSHA Compliance](https://www.slyinc.com/blog/category/osha-compliance/) - [Polyester Felt](https://www.slyinc.com/blog/category/polyester-felt/) - [Polyester Felt Filter](https://www.slyinc.com/blog/category/polyester-felt-filter/) - [Venturi](https://www.slyinc.com/blog/category/venturi/) - [Wet Scrubber](https://www.slyinc.com/blog/category/wet-scrubber/) SearchSearch ##### Recent Posts - [The Complete Guide to Safest Dust Collection for Sticky Chemical Dust](https://www.slyinc.com/blog/the-complete-guide-to-safest-dust-collection-for-sticky-chemical-dust/) - [Impacts of Poor Industrial Dust Control](https://www.slyinc.com/blog/top-7-causes-of-poor-industrial-dust-control/) - [How Wet Scrubber Systems Remove Corrosive Fumes](https://www.slyinc.com/blog/how-wet-scrubber-systems-remove-corrosive-fumes/) - [Mining for Solutions: Effective Dust Control in Critical Mineral Operations](https://www.slyinc.com/blog/keep-it-clean-essential-strategies-for-rare-earth-and-critical-mineral-dust-control/) - [Don’t Get Dusted: How to Master Lithium Dust Collection for Safety and Efficiency](https://www.slyinc.com/blog/dont-get-dusted-how-to-master-lithium-dust-collection-for-safety-and-efficiency/) ##### Categories - [Air Filter](https://www.slyinc.com/blog/category/air-filter/) - [Bag Filter Cleaning](https://www.slyinc.com/blog/category/bag-filter-cleaning/) - [Baghouse](https://www.slyinc.com/blog/category/baghouse/) - [Baghouse Screw Conveyors](https://www.slyinc.com/blog/category/baghouse-screw-conveyors/) - [Baghouse System](https://www.slyinc.com/blog/category/baghouse-system/) - [Biomass](https://www.slyinc.com/blog/category/biomass/) - [Blog](https://www.slyinc.com/blog/category/blog/) - [Cartridge Filters](https://www.slyinc.com/blog/category/cartridge-filters/) - [Cement Dust](https://www.slyinc.com/blog/category/cement-dust/) - [Dry Dust Collector](https://www.slyinc.com/blog/category/dry-dust-collector/) - [Dry Filter Systems](https://www.slyinc.com/blog/category/dry-filter-systems/) - [Dust Collection Equipment](https://www.slyinc.com/blog/category/dust-collection-equipment/) - [Dust Collection Replacement Parts](https://www.slyinc.com/blog/category/dust-collection-replacement-parts/) - [Dust Collection System](https://www.slyinc.com/blog/category/dust-collection-system/) - [Dust Collector](https://www.slyinc.com/blog/category/dust-collector/) - [Dust Collector Fire](https://www.slyinc.com/blog/category/dust-collector-fire/) - [Dust Collector Inspection](https://www.slyinc.com/blog/category/dust-collector-inspection/) - [Dust Collector Maintenance](https://www.slyinc.com/blog/category/dust-collector-maintenance/) - [Dust Collector Repair](https://www.slyinc.com/blog/category/dust-collector-repair/) - [Dust Collector Replacement Bags](https://www.slyinc.com/blog/category/dust-collector-replacement-bags/) - [Dust Collector System](https://www.slyinc.com/blog/category/dust-collector-system/) - [Dust Collectors](https://www.slyinc.com/blog/category/dust-collectors/) - [Dust Filters](https://www.slyinc.com/blog/category/dust-filters/) - [Explosive Dust](https://www.slyinc.com/blog/category/explosive-dust/) - [fabric filters](https://www.slyinc.com/blog/category/fabric-filters/) - [Filter cleaning](https://www.slyinc.com/blog/category/filter-cleaning/) - [Fly Ash](https://www.slyinc.com/blog/category/fly-ash/) - [Fly Ash Dust Control](https://www.slyinc.com/blog/category/fly-ash-dust-control/) - [FRP Scrubbers](https://www.slyinc.com/blog/category/frp-scrubbers/) - [impingement](https://www.slyinc.com/blog/category/impingement/) - [industrial applications](https://www.slyinc.com/blog/category/industrial-applications/) - [Industrial Dust Collector](https://www.slyinc.com/blog/category/industrial-dust-collector/) - [interstitial velocity](https://www.slyinc.com/blog/category/interstitial-velocity/) - [Lithium](https://www.slyinc.com/blog/category/lithium/) - [OSHA Compliance](https://www.slyinc.com/blog/category/osha-compliance/) - [Polyester Felt](https://www.slyinc.com/blog/category/polyester-felt/) - [Polyester Felt Filter](https://www.slyinc.com/blog/category/polyester-felt-filter/) - [Venturi](https://www.slyinc.com/blog/category/venturi/) - [Wet Scrubber](https://www.slyinc.com/blog/category/wet-scrubber/) --- ### [Single Post Template](https://www.slyinc.com/blog/astra-advanced-hook/6936/) **Published:** December 11, 2025 **Author:** p1ws **Content:** # Single Post Template # Single Post Template --- ### [](https://www.slyinc.com/blog/astra-advanced-hook/6913/) **Published:** November 3, 2025 **Author:** p1ws **Content:** # Blog Site Builder Layout: [![chemical processing](https://www.slyinc.com/wp-content/uploads/2024/09/wet-scrubbers-chemical-processing-1024x427.jpg "wet-scrubbers-chemical-processing | Sly Air Pollution Control") ](https://www.slyinc.com/blog/the-complete-guide-to-safest-dust-collection-for-sticky-chemical-dust/) ## [The Complete Guide to Safest Dust Collection for Sticky Chemical Dust](https://www.slyinc.com/blog/the-complete-guide-to-safest-dust-collection-for-sticky-chemical-dust/) September 14, 2026 Discover what is the safest dust collection for sticky chemical dust with wet scrubbers and… [Read More](https://www.slyinc.com/blog/the-complete-guide-to-safest-dust-collection-for-sticky-chemical-dust/) [![dust control](https://www.slyinc.com/wp-content/uploads/2024/06/industries-dust-control-1024x400.jpg "industries-dust-control | Sly Air Pollution Control") ](https://www.slyinc.com/blog/top-7-causes-of-poor-industrial-dust-control/) ## [Impacts of Poor Industrial Dust Control](https://www.slyinc.com/blog/top-7-causes-of-poor-industrial-dust-control/) September 7, 2026 Discover the Top 7 Causes of Poor Industrial Dust Control and how to fix them… [Read More](https://www.slyinc.com/blog/top-7-causes-of-poor-industrial-dust-control/) [![wet scrubber food processing](https://www.slyinc.com/wp-content/uploads/2025/01/wet-scrubber-food-processing-dust.jpg "wet-scrubber-food-processing-dust | Sly Air Pollution Control") ](https://www.slyinc.com/blog/how-wet-scrubber-systems-remove-corrosive-fumes/) ## [How Wet Scrubber Systems Remove Corrosive Fumes](https://www.slyinc.com/blog/how-wet-scrubber-systems-remove-corrosive-fumes/) August 31, 2026 Learn how wet scrubber systems remove corrosive fumes by absorbing and neutralizing HCl, HF, and… [Read More](https://www.slyinc.com/blog/how-wet-scrubber-systems-remove-corrosive-fumes/) [![Rare Earth & Critical Mineral Dust Control](https://www.slyinc.com/wp-content/uploads/2026/07/27839ba7354b77384fb55174ae7158b5c259e7b6-1024x683.jpg "Mining for Solutions Effective Dust Control in Critical Mineral Operations | Sly Air Pollution Control") ](https://www.slyinc.com/blog/keep-it-clean-essential-strategies-for-rare-earth-and-critical-mineral-dust-control/) ## [Mining for Solutions: Effective Dust Control in Critical Mineral Operations](https://www.slyinc.com/blog/keep-it-clean-essential-strategies-for-rare-earth-and-critical-mineral-dust-control/) July 27, 2026 Master Rare Earth & Critical Mineral Dust Control for safety & efficiency. Learn expert strategies,… [Read More](https://www.slyinc.com/blog/keep-it-clean-essential-strategies-for-rare-earth-and-critical-mineral-dust-control/) [![lithium dust collection](https://www.slyinc.com/wp-content/uploads/2026/07/cropentropycstinysrgbfitmaxfmjpgixidM3w2MTMxNjF8MHwxfHNlYXJjaHwxMHx8bGl0aGl1bSUyMGJhdHRlcnklMjBtYW51ZmFjdHVyaW5nJTIwZmFjaWxpdHl8ZW58MHwwfHx8MTc2NDc5MTIzMnwwixlibrb-410q80w1080-1024x640.jpg "Dont Get Dusted How to Master Lithium Dust Collection for Safety and Efficiency | Sly Air Pollution Control") ](https://www.slyinc.com/blog/dont-get-dusted-how-to-master-lithium-dust-collection-for-safety-and-efficiency/) ## [Don’t Get Dusted: How to Master Lithium Dust Collection for Safety and Efficiency](https://www.slyinc.com/blog/dont-get-dusted-how-to-master-lithium-dust-collection-for-safety-and-efficiency/) July 20, 2026 Protect your plant from hazardous lithium dust. Master lithium dust collection for safety, efficiency, and… [Read More](https://www.slyinc.com/blog/dont-get-dusted-how-to-master-lithium-dust-collection-for-safety-and-efficiency/) [![baghouse filter replacement](https://www.slyinc.com/wp-content/uploads/2026/07/0794141374d143f79af340b88139e149-1024x765.jpg "How to Replace Your Baghouse Filters for Optimal Performance | Sly Air Pollution Control") ](https://www.slyinc.com/blog/how-to-replace-your-baghouse-filters-for-optimal-performance/) ## [How to Replace Your Baghouse Filters for Optimal Performance](https://www.slyinc.com/blog/how-to-replace-your-baghouse-filters-for-optimal-performance/) July 10, 2026 Learn baghouse filter replacement: signs, media selection, step-by-step guide, safety & maintenance for optimal performance. [Read More](https://www.slyinc.com/blog/how-to-replace-your-baghouse-filters-for-optimal-performance/) --- ### [404](https://www.slyinc.com/blog/astra-advanced-hook/404/) **Published:** August 8, 2024 **Author:** p1ws **Content:** ## Sorry , we couldn’t find what you were looking for. Try again by using the search bar, by visiting the [sitemap](/sitemap), or by going to our [homepage](/). If you are still having trouble, contact the experts at SLY by calling [](tel:1-800-334-2957)[1-800-334-2957](tel:1-800-334-2957) or by filling out our [contact form](/contact/) for further assistance. --- ## Categories ### [Wet Scrubber](https://www.slyinc.com/blog/category/wet-scrubber/) --- ### [Dust Collection System](https://www.slyinc.com/blog/category/dust-collection-system/) --- ### [Blog](https://www.slyinc.com/blog/category/blog/) --- ### [Dust Collector](https://www.slyinc.com/blog/category/dust-collector/) --- ### [Baghouse](https://www.slyinc.com/blog/category/baghouse/) --- ### [Dust Collector System](https://www.slyinc.com/blog/category/dust-collector-system/) --- ### [Dust Collector Maintenance](https://www.slyinc.com/blog/category/dust-collector-maintenance/) --- ### [Dust Collectors](https://www.slyinc.com/blog/category/dust-collectors/) --- ### [Industrial Dust Collector](https://www.slyinc.com/blog/category/industrial-dust-collector/) --- ### [Bag Filter Cleaning](https://www.slyinc.com/blog/category/bag-filter-cleaning/) --- ### [Dry Dust Collector](https://www.slyinc.com/blog/category/dry-dust-collector/) --- ### [Dust Collection Equipment](https://www.slyinc.com/blog/category/dust-collection-equipment/) --- ### [FRP Scrubbers](https://www.slyinc.com/blog/category/frp-scrubbers/) --- ### [Venturi](https://www.slyinc.com/blog/category/venturi/) --- ### [Dust Collector Inspection](https://www.slyinc.com/blog/category/dust-collector-inspection/) --- ### [Dust Collector Replacement Bags](https://www.slyinc.com/blog/category/dust-collector-replacement-bags/) --- ### [Dust Filters](https://www.slyinc.com/blog/category/dust-filters/) --- ### [Dust Collector Repair](https://www.slyinc.com/blog/category/dust-collector-repair/) --- ### [Baghouse System](https://www.slyinc.com/blog/category/baghouse-system/) --- ### [Dust Collection Replacement Parts](https://www.slyinc.com/blog/category/dust-collection-replacement-parts/) --- ### [Lithium](https://www.slyinc.com/blog/category/lithium/) --- ### [Dry Filter Systems](https://www.slyinc.com/blog/category/dry-filter-systems/) --- ### [Cement Dust](https://www.slyinc.com/blog/category/cement-dust/) --- ### [Filter cleaning](https://www.slyinc.com/blog/category/filter-cleaning/) --- ### [fabric filters](https://www.slyinc.com/blog/category/fabric-filters/) --- ### [impingement](https://www.slyinc.com/blog/category/impingement/) --- ### [Air Filter](https://www.slyinc.com/blog/category/air-filter/) --- ### [Polyester Felt](https://www.slyinc.com/blog/category/polyester-felt/) --- ### [Polyester Felt Filter](https://www.slyinc.com/blog/category/polyester-felt-filter/) --- ### [OSHA Compliance](https://www.slyinc.com/blog/category/osha-compliance/) --- ### [Baghouse Screw Conveyors](https://www.slyinc.com/blog/category/baghouse-screw-conveyors/) --- ### [Explosive Dust](https://www.slyinc.com/blog/category/explosive-dust/) --- ### [Biomass](https://www.slyinc.com/blog/category/biomass/) --- ### [Cartridge Filters](https://www.slyinc.com/blog/category/cartridge-filters/) --- ### [interstitial velocity](https://www.slyinc.com/blog/category/interstitial-velocity/) --- ### [Dust Collector Fire](https://www.slyinc.com/blog/category/dust-collector-fire/) --- ### [industrial applications](https://www.slyinc.com/blog/category/industrial-applications/) --- ### [Fly Ash](https://www.slyinc.com/blog/category/fly-ash/) --- ### [Fly Ash Dust Control](https://www.slyinc.com/blog/category/fly-ash-dust-control/) --- ## Product categories ### [Diaphragm Valves and Repair Kits](https://www.slyinc.com/product-category/diaphragm-valves-and-repair-kits/) --- ### [Goyen](https://www.slyinc.com/product-category/diaphragm-valves-and-repair-kits/goyen/) --- ## Case Study Categories ### [Cement / Bulk Material Handling](https://www.slyinc.com/blog/case-study-category/cement-bulk-material-handling/) --- ### [Air Quality](https://www.slyinc.com/blog/case-study-category/air-quality/) --- ### [Mining & Minerals](https://www.slyinc.com/blog/case-study-category/mining-minerals/) ---