Process for removal of sulfur oxides from waste gases

Details Process for removal of sulfur oxides from waste gases Process for removal of sulfur oxides from waste gases

1981-11-23

1983-03-22

Vertiz, O. R.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Sulfur or sulfur containing component

423166, 423512A, C01B 1700

Patent

active

043775578

ABSTRACT:
A process for removing sulfur dioxide from waste gas is provided. The gas is first contacted with an alkaline scrubbing liquor consisting essentially of a sorbent salt in which the cation is sodium or potassium, and one of the anions is borate. The clean gas is vented and the sorbent liquor regenerated for recycle by treatment with lime to precipitate insoluble calcium-sulfur compounds for disposal and regenerate the alkalinity of the scrubbing liquor.

REFERENCES:
patent: 2196004 (1940-04-01), Bacon et al.
patent: 3873532 (1975-03-01), Dahlstrom et al.
patent: 4146569 (1979-03-01), Giammarco
Proceedings: Symposium on Flue Gas Desulfurization, Nov. 1974, pp. 453, 455.

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