Process for removing sulfur dioxide from combustion exhaust gas

Details Process for removing sulfur dioxide from combustion exhaust gas Process for removing sulfur dioxide from combustion exhaust gas

1981-08-10

1983-01-04

Thomas, Earl C.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Sulfur or sulfur containing component

C01B 1700

Patent

active

043672051

ABSTRACT:
The present invention concerns a process for removing sulfur dioxide from a combustion exhaust gas, wherein sulfur dioxide contained in the combustion exhaust gas is absorbed into an aqueous absorbent containing carboxylate salts and after oxidizing the thus formed sulfite and hydrogen sulfite into sulfate, the sulfate is converted into gypsum and separated, the invention particularly concerning a method for suppressing the decomposition of the carboxylate salts at the same time oxidizing the sulfite and hydrogen sulfite.

REFERENCES:
patent: 3928537 (1975-12-01), Saitoh et al.
patent: 3985860 (1976-10-01), Mandelik et al.
patent: 3987149 (1976-10-01), Saitoh et al.
patent: 4029402 (1978-05-01), Kobayashi et al.
patent: 4046856 (1977-09-01), Itoo et al.
patent: 4080428 (1978-03-01), Holter et al.
patent: 4213946 (1980-07-01), Furuta et al.

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