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Particulate Matter (PM) is the Target of Most Filtration Technologies

Particulate Matter (PM) is also called particle pollution. PM is a term for a mixture of solid particles and liquid droplets that come in many sizes and shapes and can be made up of many different chemicals. This particulate can foul up downstream equipment or get released into the atmosphere where it can be inhaled by humans and other breathing organisms. Regulations typically focus around PM 10 and PM 2.5 limits. PM 10 is an inhalable particle with diameters that are 10 micrometers or less. PM 2.5 is much smaller with diameters that are 2.5 micrometers or smaller and cause the greatest risk to health.

Types of Filtration:

Baghouses

Ceramic Filter Diagram

Ceramic Filters

Capture and Collection

A dust collector is a type of pollution control equipment designed to collect and store dust, particulate, and particles from industrial exhaust streams. This equipment is widely used to recover valuable granular pollutants from gaseous exhaust streams in many different industries including woodworking, steel, and packaging. A pulse-jet bag filter dust collector is designed to achieve maximum operating efficiency while reducing maintenance cost and time. Bag filters are generally used in applications requiring high yield recoveries from pneumatic transport systems or for the removal of hazardous materials from the working environment.

Advantages:

  • Automated self-cleaning of filter bags
  • Designed to handle streams with granular particulates
  • Hoppers collect granules which can be valuable in some applications
  • Continuous operation possible
  • High filter rates
  • No internal moving part
  • High ROI due to collected product
  • Low maintenance requirements
  • Fast top removal of bags – working at the clean air side
  • Dependable solid-state timer controls
  • Weatherproof – all welded construction

Ceramic Filters

There are many different types of ceramic products used for filtration.  Ceramic filters use a dense honeycomb structure made with ceramic and mineral fibers formed into tubes or candles.  Conceptually the ceramic filter process systems mirror the dust collector concept, but are placed into more severe applications where the pressure and temperatures required for operation can be much higher.

FeaturesBenefits
Ceramic CompositionMostly Chemically Inert (except HF)
Can Operate at temperatures up to 1,650F or 900C
RigidNo support cage required
Initial semi-permanent dust cake layer ensures minimal PM penetration to give high removal efficiency and stable pressure drop performance
Highly PorousGives optimum efficiency versus pressure drop performance
Single Piece ConstructionNo weak points or seams
Self-Supporting Tubular / Candle ShapeCompatible with standard dust collector or baghouse designs
With Catalyst ImpregnationAllows for NOx, HCl, SO2, Dioxin and / or Organic Compound conversion
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