Method of removing nitrogen oxides from plant exhaust

Details Method of removing nitrogen oxides from plant exhaust Method of removing nitrogen oxides from plant exhaust

1973-09-06

1976-01-13

Vertiz, Oscar R.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

423351, C01C 300

Patent

active

039325857

ABSTRACT:
A method of removing a nitrogen oxide from an exhaust containing the same which comprises preparing an absorbent solution by adding divalent copper ions alone or a mixture of the divalent copper ions and divalent manganese ions to an acid aqueous solution containing sulfites or acid sulfites of ammonium, alkaline metals, or alkaline earth metals or a mixture of two or more of these compounds; and introducing the plant exhaust into the absorbent solution to carry out reaction between the sulfite radical of the absorbent solution and the nitrogen oxides contained in the exhaust to reduce the nitrogen oxides to nitrogen gas.

REFERENCES:
patent: 1986889 (1935-01-01), Fulton
patent: 2021936 (1935-11-01), Johnstone
patent: 2095074 (1937-10-01), Muus
patent: 3761570 (1973-09-01), Lowicki et al.
patent: 3801696 (1974-04-01), Mark
patent: 3809744 (1974-05-01), Von Semel
patent: 3836630 (1974-09-01), Noguchi et al.
Industrial & Engineering Chemistry-- Vol. 63 -- June 1941 -- Rate of Oxidation of Sulfate Ions by Oxygen -- Fuller & Crist.

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