GEA Emission Control Technology GEA Baghousefilter

GEA bagfilter technology and design features for the process industry.

Bagfilters are the technology of choice in many cases when low dust content is needed for gas cleaning. Their ability to remove large Ioads on a non-selective basis has made them important for many applications.

GEA Low Pressure Bagfilter Technology Design

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Collection principle

When dust-laden gases flow through a porous layer of fabric or felt, the dust is separated from the carrier gas and is deposited on the filter medium. It is re-moved periodically and falls into the dust hopper.

The filter materials used are woven or non-woven fabrics made from natural or man-made fibres as well as inorganic fibres (glass, mineral or metal fibers).

GEA Gas Cleaning Technology

We make sure that every client receives the solution tailored to their need in a cost-effective manner and on time.

Baghouse – kilns & clinker coolers

  • LPHV technology (Low-Pressure High-Volume cleaning pulse) – lowest cost of ownership (O&M)

Converting ESPs and reverse-air filters to low-pulse-pressure baghouses

  • Re-use, where possible, support steel, casing, dust transport system

NOX control system

  • SCR selective catalytic reduction

Mercury control

  • Activate carbon with integrated particulate control

Air-to-gas coolers – for cement clinker coolers

  • Cooler + fabric filter systems for clinker cooler off gas

SO2 and acid gas scrubber systems

  • Wetscrubbers
  • Reagent injection

Cooling towers

  • Single-fluid (water) spill-back atomizing design
  • Two-fluid (air-water) atomizing design

Electrostatic precipitators

Energy recovery systems

 

GEA´s unique low pressure high volume technology (LPHV Technology) is especially applicable for treatment of large gas flows.

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This technology has been optimized for large, multiple-compartment designs, containing up to 1,150 bags at 8 meter length each which equals around 3,700 square meter filtration area per cell. Pulse air equipment required is minimal.

Walk-in clean gas compartment:

  • Easy bag access. Fully accessible bags; no need to remove blow pipes and venturis. Bags can be changed without tools.

Low pressure air cleaning technology resulting in:

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  • Lowest maintenance cost. One pulse air diaphragm valve per compartment (typically 4 in total for a kiln versus >100 required by conventional designs).
  • No plant air compressors. Reliable roots-type blowers provide the air required for bag cleaning for lower-cost operation.

Additional Features

  • Few-compartments design (typically only 4 are required (for a cement kiln)
  • Online or offline maintenance designs
  • Competitive initial cost
  • Low cost of ownership (operating & maintenance cost)
  • Worldwide installations
  • Turn-key supply or equipment-only accelerated delivery available

 Those features are results in low maintenance costs and minimum initial investment. Low pressure bagfilters are operating in the cement-, the iron and steel as well as in the non-ferrous metallurgical industry.

 In case of changes in the upstream process or if lower clean gas dust loads are required it can become necessary to change from a dry precipitator to a bagfilter. GEA is expert for such retrofits bagfilter components are installed in the existing electrostatic precipitator (ESP) casing.