Removal of noxious contaminants from gas

Details Removal of noxious contaminants from gas Removal of noxious contaminants from gas

1977-11-28

1980-09-16

Vertiz, O. R.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Sulfur or sulfur containing component

423242, 423166, C01B 1700

Patent

active

042229936

ABSTRACT:
Gas contaminated with at least one noxious component, such as SO.sub.2, HF or NO.sub.x, is scrubbed with a clear, calcium-containing, initially-basic washing liquid which also comprises the anion of a strong inorganic acid, that of a polybasic carboxylic acid and, optionally, that of a monobasic carboxylic acid. Apparatus is provided for scrubbing the gas, oxidizing produced calcium bisulfite to calcium sulfate, separating out and removing solids, and recirculating clarified liquid for scrubbing contaminated gas.

REFERENCES:
patent: 2632306 (1953-03-01), Villiers-Fisher et al.
patent: 2729543 (1956-01-01), Keller
patent: 3757488 (1973-09-01), Austin et al.
patent: 3928537 (1975-12-01), Smith et al.
patent: 3959441 (1976-05-01), Furuta et al.

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