Dry Sorption Technology

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

Advantages:

• 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