Method for removing sulfur dioxide from waste gases

Details Method for removing sulfur dioxide from waste gases Method for removing sulfur dioxide from waste gases

1974-09-16

1976-09-28

Vertiz, Oscar R.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Sulfur or sulfur containing component

423545, C01B 1700

Patent

active

039832171

ABSTRACT:
A method for removing sulfur dioxide from waste gases by a wet oxidation-absorption method, which is characterized in that an aqueous solution of ammonium sulfate acidified with sulfuric acid at a pH range of 3 - 4 is used as the absorbent. The SO.sub.2 contained in the waste gases is absorbed with the aqueous solution of ammonium sulfate in an absorption tower and then oxidized with air or oxygen to be converted into sulfuric acid in an oxidation tower.

REFERENCES:
patent: 2676090 (1954-04-01), Johnstone
patent: 2862789 (1958-12-01), Burgess
patent: 3836630 (1974-09-01), Noguchi et al.

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