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

1982-11-04

1984-04-10

Heller, Gregory A.

Chemistry of inorganic compounds

Sulfur or compound thereof

Elemental sulfur

423573R, 423573G, 423574R, 423574L, 423242, C01B 1700, C01B 1702

Patent

active

044420838

ABSTRACT:
Sulfur dioxide (SO.sub.2) is absorbed from waste gases by absorbing SO.sub.2 in an aqueous absorbent comprising soluble sulfite in an absorber; stripping the SO.sub.2 from the absorbent; absorbing the stripped SO.sub.2 in a separate absorbent for the SO.sub.2 ; and reacting the thus absorbed SO.sub.2 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.

REFERENCES:
patent: 3653812 (1972-04-01), Schneider et al.
patent: 3911093 (1975-10-01), Sherif et al.
patent: 3969492 (1976-07-01), Witte et al.
patent: 4048293 (1977-09-01), Renault et al.
patent: 4181506 (1980-01-01), Bengtsson

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