The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 04, 1983
Filed:
Aug. 10, 1981
Applicant:
Inventors:
Assignee:
Kureha Kagaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B / ;
U.S. Cl.
CPC ...
423243 ;
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.