Air pollution control system and method

Details Air pollution control system and method Air pollution control system and method

1970-08-24

1977-03-29

Peters, G. O.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Sulfur or sulfur containing component

B01D 5334

Patent

active

040149781

ABSTRACT:
A system and method are described in which sulfur-containing flue gases are contacted with a solution containing excess calcium or magnesium bicarbonate. The sulfur oxides are reacted with the bicarbonate producing soluble bisulfites. This solution is then oxidized for pH control to produce calcium or magnesium sulfate and sulfuric acid. Dolomite or limestone or similar additives are then introduced to precipitate sulfates and to regenerate the bicarbonate solution for recycle to the scrubber.

REFERENCES:
patent: 2042477 (1936-06-01), Miller et al.
patent: 2080779 (1937-05-01), Lessing
patent: 2090143 (1937-08-01), Nonhebel et al.
patent: 2113198 (1938-04-01), Nonhebel et al.
Pearson, J. L., et al.; "A Dissertation on the Howden - I.C.I. Flue Gas Washing System," The Institute of Fuel; London; 1934; pp. 1, 12-16, 19-23.
Pascal, et al.; Nouveau Traite de Chimie Minerale, Vol. IV, pp. 416-417; Masson et Cie., Paris, 1958.

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