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Spray dryer absorber (SDA)

Lime slurry and two-loop controls for flue gas treatment.

Advanced SDA Technology for Improved Flue Gas Treatment

In the SDA process lime slurry spray is injected in the raw hot gas which results in an efficient mass and heat transfer process. The lime slurry forms fine droplets enabling a controlled flue gas cooling by the evaporating water and chemical reactions between the agents in the flue gas.

SDA performance

<95%

Sulfur dioxide

>97%

Hydrogen chloride

>98%

Sulfur trioxide and hydrogen fluoride

MET system design advantages

MET offers a patented two-loop control concept:

SDA technology scheme

The concept offers the following advantages over traditional SDA

  • Approach to Saturation Temperature is controlled independently from SO₂ removal.
  • SO₂ removal control can be controlled via feedback from actual outlet conditions as well as a feed forward control from boiler operations.
  • Fabric filter size is significantly smaller and mounted at grade compared to a typical CDS system

Need more information? Contact us.

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Related pages

Dry FGD

Explore MET dry flue gas desulfurization systems. Compare circulating dry scrubbers (CDS) and spray dryer absorbers (SDA) for SO₂ and acid gas control.

Dry FGD

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