Limestone/lime slurry shall be pumped into absorption tower.
SO2 in flue gas shall react with CaCO3 to generate CaSO4.
CaSO4 at a certain saturation level shall crystallize to form dehydrate gypsum.
Gypsum slurry shall be dehydrated in the tower with moisture control at 10%.
Produced gypsum shall be stored in the silo by conveyor.
After being demisted, desulfurized flue gas shall be discharged into atmosphere via chimney.
System Composition
Limestone slurry preparation system
Flue gas system
SO2 absorption system (including slurry circulation and oxidation)
Gypsum treatment system
Electric & automation system
Process Flow
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