Method of reducing sulfur oxide and nitrogen oxide content of fl

Details Method of reducing sulfur oxide and nitrogen oxide content of fl Method of reducing sulfur oxide and nitrogen oxide content of fl

1984-12-10

1986-01-21

Heller, Gregory A.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

423242, 423574R, C01B 2100, C01B 1700

Patent

active

045656789

ABSTRACT:
Flue gas is treated by a regenerable wet scrubbing process to reduce sulfur- and nitrogen oxides by reacting with a solution containing ammonium thiosulfate and hydroxide, and a ferrous chelating agent. A portion of the spent scrubber solution is regenerated by reaction with hydrogen sulfide, flashed to hydrolyze the polysulfide content, and then returned as regenerated solution to the principal scrubbing circuit.

REFERENCES:
patent: 4086324 (1978-04-01), Welty

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