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Dust Collection & Air Pollution Control Focus

July 24, 2008

V-Style Air Filter
The Durafil ES filter is an easy drop-in replacement for any standard V-shaped filter. This filter technology enables the HVAC system to consume 20 to 35% less total energy than competitive (V-style) products. This savings is produced by a patented radial inlet and outlet, which generates a much lower pressure drop profile. There is 30% more open area on the filter inlet and 60% more on the outlet than on conventional V-style filters. The greater open area is key to the lower pressure drop condition. A new height-to-pleat spacing configuration uses the same amount of media as in V-style filters, with more pleats per inch, resulting in a greater active filter area.
Camfil Farr, Amherst, NY 513-324-8346 www.green-air-filters.com

Spark Detection Systems
Sparks and embers are created very quickly in facilities in which combustible materials are being worked, exhausted, transported, filtered, or dried. Filters, dust collection bins, silos, and even complete production lines are areas of greatest risk. Foreign objects in the conveyed material, defective parts of production machinery, friction processes, and electric sparks are all fire-generating and ignition sources for dust explosions. As a preventative measure, spark detection systems can reduce the risk of fires and dust explosions in production equipment, dust collectors, and conveying systems. Sensors detect sparks and embers and then extinguish them before they reach the filter, without interrupting production. The systems are Factory Mutual approved.
GreCon Inc., Tigard, OR 503-641-7731 www.grecon-us.com

Central Vacuum System
The Central Vac dust control system was designed for various applications, from product transfer in the food/feed/seed industry to residue cleanup in manufacturing facilities or dust control and cleanup in feed mills. The unit can be set up as a simple two- or three-point pickup or as a multi-point-type pickup system. The operator can use the system to clean up many types of products in almost any location in the facility. Features include a cast iron drop-through airlock, a secondary precleaner that is located upstream of the blower, a Super Chrome blower, and a primary collector and separator. The computer-designed cyclone is fitted to specific applications and designed to provide optimum performance, keeping discharge dust to a minimum.
Walinga Inc., Guelph, ON, Canada 519-824-8520 www.walinga.com

Baghouse Dust Collector
The Imperial big round filter (BRF) performs dust collecting with little maintenance. Its rugged construction handles tough applications, providing high efficiency and long media life with a seven-year warranty on the cleaning mechanisms. These baghouses are used to contain a variety of dusts, including straw, plastics, grain, powders, rock products, pet food, and wood dust.
Imperial Systems Inc., Jackson Center, PA 800-918-3013 www.isystemsweb.com

Dust Removal System
After plastic regrind has been cleaned in the patented Compact Cyclonic Deduster (CCD) dust removal system, the cleaned material is as good as resins and can be mixed with virgin material for further processing. The core element of the system, the deduster, removes resin dust, streamers, metal dust, dirt, paper, and other contaminants. The contaminants are separated from the cleaning air in a high-efficiency cyclone and collected in a dust drum under the cyclone. The full dust drum can be changed without interrupting operations. The cleaning air is returned to the deduster after it passes through an in-line filter. The system is ideal for cleaning all granular dry bulk materials with high dust loads.
Pelletron Corp., Lancaster, PA 717-293-4008 www.pelletroncorp.com

Automatic Blast Gates
Blast gates open and close automatically, promoting total dust-collection control and increased efficiency in undersized dust-collection systems. The automatic gates enable facilities to employ smaller dust-collection systems where intermittent use is required, effectively lowering up-front and operating costs. Automatic gates can also be used to lower the operating costs of large dust-collection systems. Industrial-grade blast gates can be utilized as blast gates only, as controllers for dust-collection system motors, or for variable-frequency drive control.
K&B Duct, Greensboro, NC 866-562-3828 www.kbduct.com

Baghouse Compliance Systems
EPA MACT compliance systems for baghouses and cartridge-type dust collectors integrate B-PAC baghouse control and sensing hardware with FilterWare software. The control system optimizes processes while monitoring regulatory parameters. The software logs data and automatically generates comprehensive reports on particulate emissions, filter leaks, pressure, airflow, etc. It also reports on the alarm logs and corrective actions required by EPA MACT.
FilterSense, Beverly, MA 978-927-4304 www.filtersense.com

Broken Bag Detector
The DustAlarm broken-bag detector monitors exhaust from baghouses and other types of dust-collection systems, identifing problems with filter media and other sources of dust emissions. The instrument uses time-proven tribo electric technology to continuously monitor the level of dust emission in dust-collection system exhaust. When an increase in emissions level exceeds the user adjusted setting, an alarm is triggered, as indicated by the unit’s output relay changing state.
Monitor Technologies LLC, Elburn, IL 800-766-6486 www.monitortech.com

Cartridge Dust Collector
The Gold Series dust collector is available with the X-vent explosion vent for applications involving the capture of combustible dusts. The X-vent is manufactured in accordance with NFPA standards and carries CE and ATEX certifications. The multiribbed vent delivers a high negative static operating pressure rating of –80 in. WC and opens up at +1 psi (30 in. WC). Rated for an operating temperature of 350°F, the vent is made of sanitary food-grade stainless steel and is used in the food processing, chemical, pharmaceutical, and grain-processing industries.
Farr APC, Jonesboro, AR 866-752-0702 www.farrapc.com

Hybrid Vision Isolator
The hybrid vision isolator offers a high-visibility, short-lead-time, midrange option for the containment of pharmaceutical products and processes with containment levels below 1 µg/m3. It incorporates flexible containment isolator functionality and is used for applications that require the containment of larger pieces of equipment and processes that need a bigger working area. It has an acrylic canopy that allows full visibility of the inside of the isolator, which is lit by ambient light or room lighting.
Hosokawa Micron Powder Systems, Summit, NJ 908-277-9347 www.hmicronpowder.com

Baghouse Pressure Transmitters
Model DP 20T (differential) and SP 20T (static) pressure transmitters feature a nonclogging design for mounting on the dirty side of a fabric filter baghouse or cartridge-style dust collector. The 4–20-mA transmitters are more reliable than typical tube-style electronic and mechanical gauges, which clog easily. The transmitters feature a large, flush abrasion-resistant ceramic diaphragm that resists clogging. Both the differential and static configuration are available in various ranges, including 0–10 in. WC, 0–20 in. WC, and bidirectional –5 to +5 in. WC. The units are constructed of heavy-duty stainless steel.
FilterSense, Beverly, MA 978-927-4304 www.filtersense.com

Heavy-Duty Dust-Collection Systems
With heavy-duty, high-stiffness construction to prevent housing failures and deliver long operating life, large-volume dust-collection systems can be engineered to accommodate a range of pressures. Automated pulse-jet filter self-cleaning maintains system pressure. Compressed air in 90–100-psi pulses performs pulse-jet cleaning of bag filters. Without internal moving parts, the collectors are used in foundries, metal and mineral processors, gypsum and cement plants, coal handlers, and grain processors.
CECOaire, Louisville, KY 502-635-2655 www.cecoenviro.com

Dust Collection Hoses
This company offers four different dust collection hoses. The economical CVD line is extremely flexible. The RFH is a general-purpose hose that offers superior chemical resistance and good abrasion resistance. The UFD offers superior abrasion resistance and handles higher pressure and vacuums. The SVUF is ideal for industrial settings and is available with screw-on end fittings.
Hi-Tech Duravent, Plymouth, IN 800-348-6500 www.hitechduravent.com

High-Filtration and Containment Dust Collector
Equipped with a self-cleaning HEPA filter, the Absolut Cephir high-filtration and containment system removes and contains high volumes of even extremely fine dust particulates from the exhaust air of production machines in a variety of industries, including in the pharmaceutical, industrial, chemical, nutrition, and food sectors. The unit features a modular design for easy upgrades, parallel swing doors and a pull-out control cabinet for easy access, and a bag-in bag-out filter exchange system. The compact 40 × 30 × 90-in. unit can fit almost anywhere. It can also be customized with a continuous bag-in bag-out system, a rapid transfer port, a split valve, an isolator, and a wash-in-place unit to perform a variety of dust-handling operations.
Fette America, Rockaway, NJ 973-586-8722 www.fetteamerica.com

VOC Emissions Control System
The MultiPhase BioSystem is an alternative to thermal oxidizers, in-bed biofiltration, and aerobic digestion for the control of volatile organic carbon (VOC) emissions. The system treats high inlet emissions concentrations effectively for high-vapor-pressure VOCs, such as alcohols and methanol, and it simultaneously treats difficult VOC compounds such as turpenes, pinenes, and methanol. It also removes formaldehyde emissions.
Tri-Mer Corp., Owosso, MI 801-294-5422 www.tri-mer.com

Dust-, Mist-, and Fume-Collection Systems
This company manufactures state-of-the-art dust-, mist-, and fume-collection systems that provide low-energy consumption and compliance with all mandatory requirements. A complete line of dust-collection systems and services is available for collectors from 1000 to over 100,000 cfm.
Dantherm Filtration, Thomasville, NC 800-533-5286 www.danthermfiltration.us

Downdraft-Series Dust Collector
The Modu-Kleen downdraft dust collector contains fugitive dust. The air enters at the top of the dust collector housing and flows downward to the cartridge filters, improving the filtering process and the material-to-air ratio. Air velocities are lower than those with a conventional dust collector, reducing the load on each filter cartridge and extending filter life. Cartridge filters are positioned horizontally, requiring less floor space and making filter removal easier. A large, quick-opening door allows maintenance personnel to closely inspect each cartridge when required without entering the filter housing. In addition, any single cartridge can be removed without disturbing adjacent cartridges.
Dynamic Air Inc., St. Paul, MN 651-484-2900 www.dynamicair.com

Air Filtration Media
TurboWEB (HD) is a synthetic material that provides high dust-loading capacity and extended durability. It achieves high performance through a nanomechanical separation process during the initial media development stages. Nanomechanical separation takes advantage of the small pore structure provided by nanofibers and does not rely on electrokinetic charges. There are no efficiency losses throughout the life of a filter.
Midwesco/TDC Filter, Bolingbrook, IL 800-424-1910 www.tdcfilter.com

Pulse-Jet Cartridge Collector
The MikroFlo pulse-jet cartridge collector’s high-filtration efficiency provides lower pressure drop than comparable units, resulting in reduced operating costs, longer filter life, and less maintenance. Its modular design makes the unit suitable for low-overhead applications and processes with limited space. The collector is available with Matrex filter cartridges, which incorporate the company’s proprietary premium filter media, providing higher initial efficiencies.
MikroPul, Charlotte, NC 704-998-2600 www.mikropul.com

Nozzle-Based Cleaning System
This complete line of baghouse and cartridge collectors has special design features with a nozzle-based cleaning system that induces more cleaning air into the media. By improving the amount of cleaning air induced, the filter lasts longer and allows more process air to pass through or recover better. The recently introduced next generation of nozzle technology helps induce even more cleaning air into the filter. In addition, certain nozzle types also allow the reverse pulse-jet system to operate at lower compressed air levels.
Scientific Dust Collectors, Alsip, IL 708-597-7090 www.scientificdustcollectors.com

Modular Cartridge Bin Vent
A bin vent has a large cartridge filter that traps fine airborne particles while material is pneumatically conveyed into a storage tank. Timed bursts of air pulse the filter, dislodging fines and returning them to the storage tank. The bin vent’s design features a built-in weather hood and diffuser. The quick-release clamp allows easy access to the cartridge filter. Since the height of the unit is less than 4 ft, maintenance is accomplished from the tank deck without tools. In addition, the single-cartridge filter design eliminates the need to install and service multiple filter bags.
Premier Pneumatics Inc., Salina, KS 785-825-1611 www.premierpneumatics.com

Portable Cyclonic Shop Vacuum
The Gorilla Vac is a powerful portable cyclonic shop vacuum that eliminates clogging. It combines a high-efficiency cyclone with a high-power dual 110-V-motor industrial vacuum. It uses the cyclone to separate 98% of the material before the prefilter and the HEPA filter. The air coming out is cleaner than the air people breathe. The cyclone separates the dust into a plastic bag–lined 35- or 55-gal drum. Small amounts of ultrafine dust are trapped in a disposable paper prefilter. The air is finally exhausted through a final filter made of HEPA-rated media. HEPA-rated filter media remove 99.97% of particles that are 0.3 µm in diameter.
Oneida Air Systems, Syracuse, NY 800-732-4065 www.oneida-air.com

Bag Dump Station
A self-contained bag dump system has a filter access door behind which are high-capacity cartridge filters that can be changed out easily. The filters retain product within the process down to 0.5 µm, in contrast to external filtration systems that remove product from the process. The bag dump station features an efficient regenerative blower for continuous dust-free operation. An adjustable pulse-jet filter cleaning system keeps the filter clear, allowing efficient operation and reduced maintenance intervals. Sanitary and pharmaceutical models are available.
Hapman, Kalamazoo, MI 800-427-6260 www.hapman.com

Filter Receivers
Supporting most conveying systems, customizable filter receivers provide automatic air filtration and dust control for dry bulk materials that are conveyed pneumatically. Unwanted airborne material is trapped by the filter media, which are located within the receiver. Preset timers clean the filter media automatically with pulse-jet reverse airflow, dropping retained airborne material into the unit’s circular hopper. The easy-to-use and easy-to-install receivers achieve efficient performance when the proper filter media are selected and matched to the system’s airflow. The receivers are made of heavy-duty carbon steel for abrasive materials and come with an epoxy coating or in stainless steel for corrosive and food-grade applications.
Cyclonaire Corp., York, NE 888-593-6241 www.cyclonaire.com

Hazardous-Location Industrial Vacuums
This line of explosionproof vacuums is composed of two electric models—the CFM 118 EXP and 118 EXPW—and two intrinsically safe pneumatic models—the A15 EXP and A15 EXPW. The CFM 118 EXP–series is available in two electric models. The 118 EXP is used to pick up dry materials, while the 118 EXPW picks up liquids and other wet hazardous materials. They are made of Type 304 stainless steel and have conductive accessories to eliminate percussion arcing and static charge. In addition, the 118 EXP–series is CSA approved for use in Class I, Group D and Class II, Groups E, F, and G environments. For use without electricity, the pneumatic A15 EXP–series consists of two separate models for dry or wet pickup.
Nilfisk CFM, Malvern, PA 800-645-3475 www.stop-the-dust.com