A baghouse is the most common type of dust collector, since very often it is the most cost-effective and efficient method, with a typical rate of fine particle capture of more than 99%. Industry-specific state OSHA regulations require companies that run processes emitting heavy smoke, dust or other particles to maintain air quality standards by filtering facility air. As a result, baghouses are vital equipment for coal handling, cement fabrication, metal fabrication, pharmaceutical, chemical processing, woodworking, recycling, waste incineration and agricultural industries, among many others. Read More…
Typical baghouse dust collector applications include dust capturing, separating and filtering explosive media, metalworking chips, toxic media, wood dust, concrete dust, welding fumes and incinerator smoke. Facilities usually incorporate baghouses into large dust collecting systems, with overhead ductwork and capture arms (suction hoods), which hang over the workspaces where dust is formed. In large facility applications, the baghouse is often located outside, connected to the interior through ductwork.
Bag houses operate by drawing contaminated air in through ducts to a hopper-shaped structure containing fabric filters. The air is pulled through the fabric bags by a vacuum-creating fan, leaving behind dust, smoke and particles; clean air exits through the fan at the outlet at the top of the baghouse, while dust particles settle into an airlock at the bottom of the hopper, which is routinely emptied.
During the filtering process, the fabric filters accumulate a layer of dust called a dust cake, filter cake or filtering cake. The main function of the filter fabric is to provide the medium on which the dust cake will form; once enough dust has accumulated, it creates a barrier that is capable of capturing very fine particles.
The filter cake must be managed, however, because it can become too thick and prevent acceptable air flow. There are three main ways of managing the filter cakes. Mechanical shaker bag houses clean their filter bags through vibrations caused by a motor-driven shaft and cam. These vibrations cause waves in the bag that shakes the dust cake off the inside surface of the bag and into the hopper.
Reverse-air baghouses are compartmentalized and allow for continuous operation during their cleaning cycle. In order to begin cleaning, filtration is halted in the compartment about to be cleaned. Clean air is then injected into the dust collector in a reverse direction, which pressurizes the compartment and causes the filter bags to partially collapse.
This results in the filter cake cracking and falling into the hopper below. Reverse-jet baghouses also allow for continuous operation during their cleaning cycle, but are typically not compartmentalized. Instead, the filter bags are cleaned by short bursts of compressed air injected through a compressed air manifold. Common materials used to make baghouses include cotton, glass-fiber and synthetic materials.
With 20+ years in the industry, it is no wonder Quality Air Management manufactures and supplies the newest, most revolutionary technology available. This includes a wide variety of quality dust collectors in standard and custom configurations.$$$
Process Environments specializes in the design and installation of cartridge and baghouse dust collectors, as well as many other process systems. For over 25 years, our dust collection experts have provided successful solutions for a wide variety of applications, and have experience assisting with combustible dust and NFPA requirements.$$$
Scientific Dust Collectors (SDC) began in 1981 when our first patent for improving filter cleaning was issued. Since then, SDC has been issued a number of additional related patents for improvements in dust collector cleaning technologies including our patented nozzle-based cleaning system which is superior to other collectors. Combined with our High Side Inlets, Wide Filter Spacing, and Inlet Baffling, we are able to guarantee performance, efficiency, and filter life. If you want the best, please consider SDC.$$$
Hastings Air Energy Control provides many types of dust collectors depending on the needs of your workplace. We provide cartridge, baghouse, cyclone separators, portable, wet dust collectors, and more. Our dust collection booths are specifically designed to meet or exceed OSHA compliance for dust created from fiberglass, hexavalent chromium, stainless steel, lead, and other materials. Contact us today and we will help you find a solution.$$$
Our dust collecting systems are designed to eliminate respirable airborne contaminants from the work environment. Eliminating airborne contamination in the workspace can lead to better employee performance and a lower rate of absenteeism.$$$
With more than 60 years as a leader in air-blast equipment, Empire produces an extensive line of dust collectors including baghouses, cartridge dust collectors, room ventilation systems, media reclaimers, and vacuum recovery systems.$$$