Hamon Group

Integrated solutions for a clean environnement


Fabric Filters

 

Hamon 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 more conventional technologies such as medium pressure pulse jet filtration.

Our engineers have designed and constructed fabric filters for a variety of applications, including cement, 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, etc.

A fabric filter system is very effective at the collection of fine particulates and metals.
By using the appropriate fabric filter design (reactor type) and with additional sorbents injection upstream the fabric filter, air toxics such as SOx, mercury, dioxine, ... can be collected with substantially high efficiency. This principle is used by the Dry FGD (Flue Gas Desulfurization) and Semi-Dry FGD systems. In fact, the SOx, and other pollutants, capture takes place across the filter cake of the fabric.
This type of fabric filter will be used for dedusting and capture many other pollutant.

 

Fact and figures:

  • Gas flow from 50 to over 2 000 000 Nm3/h
  • On-line or Off-line cleaning
  • Bag length up to 8 meters
  • High reliability, low maintenance
  • No compressors or dryers for LPHV fabric filter type 

 

Hamon offers a wide variety of filter bag cleaning technologies and associated fabric filter media to suit virtually all operating conditions and dust characteristics.
Hamon supplied Fabric Filter for many industrial processes such as:

 

Hamon Air Quality System Business Unit can supply several Fabric Filter technologies:

  • Low pressure high volume Fabric Filter (LPHV) that is working without compressor and optimized for large utilities
  • Medium or high pressure Pulse Jet Fabric Filter
  • Reactor Fabric Filter
  • COHPAC™(Compact Hybrid Particulate Collector - ESP conversion)
     

For dedusting application, the decision to use baghouses over other particulate control devices such as Electrostatic Precipitator depends upon several factors. The system is optimized by employing the best pulse jet technology depending on the application and customers requirements.These include:

  1. Application
  2. Efficiency of collection required
  3. Fine particulates (PM 10, PM 2,5)
  4. Operating temperatures
  5. Particulate/ash resistivity
  6. Requirement to collect metals and toxic elements such as lead, cadmium, zinc, dioxins, HCl and mercury
  7. Acidity of flue gas stream and materials being collected (ie. high sulfur coals)
With additional dry sorbents, air toxics such as mercury, dioxins and furans 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 Flue Gas Desulfurization - FGD systems, additional SO2 capture takes place across the filter.

 

Hamon Fabric Filters strengths:

 

 

 

Low Pressure Filter on a 680 MW Caol Fired Boiler

Low Pressure Fabric Filter internals

Heat Exchanger and Fabric Filter for a
Clinker Cooler - Cement Industry

Pulse Jet filter for  a Coal mill - Cement Industry

Fabric Filter erection per module

Fabric Filter pre-assembled and forwarded to site by boat