Removal of noxious contaminants from gas

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

B - Operations, Transporting

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B01D 53/34 (2006.01) B01D 53/14 (2006.01) B01D 53/50 (2006.01) B01D 53/56 (2006.01) B01D 53/68 (2006.01) C01F 11/46 (2006.01)

Patent

CA 1100122

Abstract of the Disclosure Gas contaminated with at least one noxious component, such as SO2, HF or NOx, 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.

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