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:
Aug. 18, 1992
Filed:
May. 24, 1991
Applicant:
Inventor:
Andrew G Szekely, Yorktown, NY (US);
Assignee:
Union Carbide Industrial Gases Technology Corporation, Danbury, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B / ; F23C / ; F23D / ;
U.S. Cl.
CPC ...
4235 / ; 422160 ; 431-9 ;
Abstract
A sulfur recovery process wherein a minor fraction of a hydrogen sulfide-containing gas is precombusted with oxygen in an externally cooled combustion zone while extracting the major fraction of the heat released in the substantially complete combustion of hydrogen sulfide to sulfur dioxide in that zone, the gas is further cooled and is then passed to a Claus reaction furnace together with the major fraction of the gas, enabling using oxygen for a substantial productivity increase within the temperature and flow rate limitations of a Claus plant without need for a temperature moderator introduced into the precombustor.