Fabric Filter

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Hamon Research-Cottrell fabric filter systems are a major component of a long tradition of excellence.  We combine more than 40 years of experience in fabric filtration including the latest approaches in low pressure high volume pulse jet filters as well as older technologies such as reverse gas filtration.

Our engineers have designed and constructed fabric filters for a variety of applications, including coal fired steam generators, stoker fired boilers, fluidized bed combustion boilers, municipal waste incinerators, cogeneration facilities, and industrial processes such as steel, rock products, aluminum, and cement.

The decision to use fabric filtration over other particulate control devices such as electrostatic precipitators (ESP's), as well as the type of filtration fabric to use depends upon numerous application factors, including:

  • Operating temperature
  • Acidity of flue gas stream
  • Particulate material being collected
  • Ash Resistivity
  • Emissions level or collection efficiency required
  • Requirements to collect heavy metals and toxins such as Lead, Cadmium, Zinc, Dioxins, HCl, HF and Mercury
  • Fine Particulate emissions requirements (PM10, PM2.5)
  • Integration with a wet or dry flue gas desulfurization system

With inherent high collection efficiency, a fabric filter system is very effective at the collection of fine particulates and metals.

With additional dry sorbents, air toxics such as mercury can be collected with substantially reduced injection rates of sorbents compared to ESP's.

Additionally when installed as the particulate collection device following spray dryer or circulating fluid bed dry FGD systems, additional SO2 capture takes place across the filter cake deposited on the fabric which enhances the total SO2 reduction across the system and at lower reagent consumption rates over a DFGD and ESP system.

Hamon Research-Cottrell offers a wide variety of filter bag cleaning technologies and associated fabric filter media to suit virtually all operating conditions and dust characteristics.

Fabric filter technologies offered by Hamon Research-Cottrell include pulse jet, reverse gas , and COHPACTM (Compact Hybrid Particulate Collector) cleaning designs.