Types of Dust Collecting Systems

The following are the primary categories of dust collection systems used in industries:

Electrostatic Precipitators

Electrostatic precipitators employ electricity and the movement of charges to collect dust, soot, and other particulates from exhaust gases. The electrostatic precipitators' operating principle depends on producing a significant potential difference between two electrodes or plates, which subsequently generates an ionization field between them.

As the gas passes through, the particles ionize and are drawn to the electrode with the opposite charge, where they can be collected. After losing their charge, the accumulated particles can be mechanically removed from their plates by rapping, washing into a hopper below, or vibration. Power generating, cement, chemical, metal, and paper sectors use electrostatic precipitators. They come in a tube, plate, moist, or dry form.

Advantages

• Able to handle big gas volumes with little pressure decrease
• Ability to efficiently capture particles as small as one-tenth of a micron

Disadvantages

• Only able to regulate the emission of particulate matter; unable to control the emission of gases
• Not adaptable to modifications in operating circumstances after installation

Wet Scrubbers

Wet scrubbers remove and collect particles from gas flows by combining the dust particles with water and separating them from the air. Due to its chemical makeup, the liquid is bonded to heavier gas particles. The top of the scrubber then lets out clean air. However, due to the potentially dangerous compounds it may retain after the process, the cleaning liquid is collected for special disposal to prevent land and water pollution. The venture, cyclone, packed bed, spray, and mechanical scrubbers are among the various varieties of wet scrubbers.

Advantages

• Comparatively stable and tolerant to a large temperature range
• Can cut down on the release of chemicals like surfactants that could lead to acid rain

Disadvantages

• Need routine upkeep since they are prone to rust

Fabric Filters

These come in a variety, but they all work on the same general premise of catching particles larger than the mesh size. The type of material and filter mechanism affect how well fabric filters perform in a given application. Baghouses and fabric collectors are types of fabric filters, with baghouses typically being utilized in industrial setups.

Depending on the type of baghouse, a filter's operating principle will vary. The pulse jet filter collects the dust particles that are outside of the filter. This permits the uninterrupted flow of air and the online cleaning of filters with high-pressure compressed air. Low-pressure deflation is used in reverse air baghouses to clean the filters, which is most useful in automated systems with high temperatures.

It is possible to maintain the filter's cleanliness. The kind of fabric filter collector to use, the cost of the media, the operating temperature, and the chemical and physical properties of the particulate matter to be collected all affect the type of baghouse used.

Advantages

• Extremely effective
• A wide range of gas volumetric flow rates are applicable.
• Drops in low pressure

Disadvantages

• Need a lot of floor space
• Fabrics can rust easily.
• Material damage can occur as a result of extreme temperatures.
• Not suitable for use with wet gasses

Centrifugal Collectors

These include devices like the cyclone collector, which uses centrifugal force to propel dirty gas into a spiral or vortex. After being placed on the conical section's walls, the heavy particles are permitted to fall from the top. The gas enters from one end and exits through another in an axial orientation.

Advantages

• Can tolerate high temperatures and saves space
• Able to handle moist gasses
• Lowers expenses

Disadvantages

• Only applicable to the separation of large particles; ineffective for the separation of small particles
• Associated with a reduction in high pressure
• Incompatible with sticky materials

Applications of Dust Collectors

Every business that generates particulate matter, from thermal power generation to instant coffee facilities, uses dust collectors. Here are some examples of applications for dust collectors:

• Production of phosphoric acid
• Production of sulfuric acid
• Iron and steel mills, steel-making furnaces, and blast furnaces
• Glass & glass fiber industry
• Asphalt batching plants
• Air-blown asphalt stills, catalyst regenerators, petroleum refineries, and sludge burners
• Instant coffee plants
• Portland cement industry
• Soap and synthetic detergent manufacturing

Choosing the Correct Dust Collecting System Company

To ensure you have the most productive outcome when purchasing a dust collecting system from a dust collecting system manufacturer, it is important to compare several companies using our directory of dust collecting system manufacturers. Each dust collecting system company has a business profile page highlighting their areas of experience and capabilities, along with a contact form to directly communicate with the manufacturer for more information or request a quote. Review each dust collecting system business website using our proprietary website previewer for a better idea of what each dust collecting system company specializes in. Then, use our simple RFQ form to contact multiple dust collecting system businesses with the same form.