Experts in air filtration

Gas Suspension Absorbers

Filter Designs have designed and developed cleanREACT; our own range of Gas Suspension Absorbers (GSA).

The GSA process is a dry desulphurisation technology, with lime as a sorbent.

The process removes sulphur dioxide (SO2) by contact between the dry lime powder and the acid constituents in the flue gas.

The GSA process is known for its high efficiency, in that the reactor has been based on gas suspension technology. This means that a large concentration of fly ash, dust particles, and lime interacts inside the reactor.

Advantages of the GSA process:

  • High-efficiency and stable operation
  • Low investment cost
  • Low operation cost (sorbent can be re-used)
  • Less pressure loss and reduced load of ID fan
  • Less space requirement, resulting in low-cost civil work
  • No anti-corrosive treatment is required for the stack
  • Simple to operate and easy to maintain

To find out more about our work with Gas Suspension Absorbers, see our case study -

If you would like more information about our cleanREACT range, or indeed any of our other products, please don’t hesitate to give us a call on 01858 419104 or complete our enquiry form.

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Our recent Projects

We were contracted to provide 2 small Ceramic filters suitable for a small volume but with a design maximum temperature of 600°C. In addition the filters will be handling a syngas which cannot be mixed with oxygen so an alternative to compressed air would need to be used for the ‘Cleanpulse’ cleaning of the 25 Ceramic element in each of these CPC78 filters. In addition dosing of small amounts of a re-agent is required so the client also opted for a ‘Cleandose’ 25kg bag skid. Find out more about Project CAD below.

Project SRCL HH - GSA (Gas Suspension Absorber) Reactor Tower

Project HR - Dual Flue Gas Treatment Plants with HMI Control System, DeNOX, DeSOx, CEMS

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