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:
Jun. 17, 1980
Filed:
Dec. 05, 1978
Everett Gorin, San Rafael, CA (US);
Continental Oil Company, Stamford, CT (US);
Abstract
An improvement is provided in the regeneration system of aqueous regenerative processes for the removal of SO.sub.2 from SO.sub.2 -containing gas streams which have a scrubbing system containing (1) a scrubbing zone through which a recirculating stream of sodium or potassium thiosulfate solution continuously passes as a vehicle for the SO.sub.2 absorbent, sodium or potassium carbonate, under conditions favorable to the formation of sulfite by the reaction of carbonate and SO.sub.2 and (2) a thiosulfate generation zone in which the sulfite is converted by reaction with a sulfide to thiosulfate. The improvement comprises converting, in a regeneration system, the net make of thiosulfate to a mixture of sulfide and carbonate by first converting the thiosulfate to sulfate, then reducing the sulfate to sulfide; and thereafter partially carbonating the sulfide to form a mixture of sulfide and carbonate for return to the scrubbing system.