Dry Sorption Technology



According to the local emission regulation particles or gaseous pollutants have to be removed from the flue gas.

A dry flue gas cleaning system consists of the following main components:

  • Possibly a heat exchanger for heat recovery respectively for reheating the flue gas.
  • Conditioned fabric filter /electrostatic filter for separation of particles and gaseous pollutants.
  • Additive dosage system and residual material system.
  • Combination of different processes according to the particular demands on removal efficiency.

The following additives are used:

  • Hydrated lime
  • Sodium bicarbonate
  • Activated carbon

Operational experiences:

  • Achievable clean gas concentrations of less than German 17. BImSchV
  • Particle removal efficiency up to 99,9 %
  • SO2-removal efficiency up to 95 %
  • HCl removal efficiency up to 99 %
  • Removal of aerosols
  • Great operational experiences with this technology


  • Use of proved components
  • Comparatively low number of gas cleaning steps
  • Good removal efficiency of pollutants
  • No waste water
  • Absorbents and reaction products are available in solid form
  • No water plume at the chimney
  • Easy operability

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