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:
Apr. 18, 1989
Filed:
Sep. 07, 1984
Applicant:
Inventors:
Robert L Reed, Houston, TX (US);
John W Palm, Tulsa, OK (US);
Assignee:
Amoco Corporation, Chicago, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B / ;
U.S. Cl.
CPC ...
4235 / ;
Abstract
Sulfur is recovered from an acid gas stream comprising hydrogen sulfide by successively reducing the hydrogen sulfide in a thermal reaction zone, a first position Claus catalytic conversion zone operated above the sulfur deposition point, and a second position Claus catalytic conversion zone operated under conditions effective for producing and depositing elemental sulfur on the catalyst. Periodically, the reactor in the second position is switched to the first position, the reactor in the first position having previously been preconditioned thereby avoiding a temporary increase in emissions after switching.