Method of desulfurizing waste gases containing sulfur dioxide

Details Method of desulfurizing waste gases containing sulfur dioxide Method of desulfurizing waste gases containing sulfur dioxide

C - Chemistry, Metallurgy

01

B

23/332, 23/349

C01B 17/05 (2006.01) B01D 53/50 (2006.01)

Patent

CA 1213124

METHOD OF DESULFURIZING WASTE GASES CONTAINING SULFUR DIOXIDE Abstract of the Disclosure Sulfur dioxide (SO2) is absorbed from waste gases by absorbing SO2 in an aqueous absorbent comprising sol- uble sulfite in an absorber; stripping the SO2 from the absorbent; absorbing the stripped SO2 in a separate absorbent for the SO2; and reacting the thus absorbed SO2 in a liquid Claus reactor forming sulfur. In a preferred embodiment, the gas from the stripping step is subjected to a condensation step in a heat exchanger boiler where steam ingoing to the stripper is generated.

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