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. 09, 1990
Filed:
Sep. 12, 1988
Applicant:
Inventors:
Dennis D Delaney, Yorba Linda, CA (US);
Hugh W Gowdy, Irvine, CA (US);
Assignee:
Union Oil Company of California, Brea, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C01B / ;
U.S. Cl.
CPC ...
4235731 ; 4232451 ; 4235 / ; 4235764 ; 4235766 ; 4235767 ;
Abstract
The long term stability of process solutions used in H.sub.2 S-to-sulfur absorption/oxidation process, wherein the incoming hydrogen sulfide-containing gas stream is contaminated with hydrocarbons and/or organic oxygenated compounds and the process is generating an excessive amount of thiosulfate in the process solution, is improved by a method comprising contacting the gas stream and/or the process solution with charcoal to remove both the contamination and at least a portion of the thiosulfate therefrom.