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:
Jul. 18, 1995
Filed:
Jun. 25, 1993
Applicant:
Inventor:
James S Lehr, Wilmington, DE (US);
Assignee:
Star Enterprise, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; C01B / ;
U.S. Cl.
CPC ...
585803 ; 585836 ; 585854 ; 423224 ; 423233 ; 423234 ; 42324311 ; 42324308 ;
Abstract
A hydrocarbon stream is washed with caustic solution to reactively remove hydrogen sulfide and produce a spent caustic solution containing sulfide reaction products. The spent caustic solution is stripped with concentrated carbon dioxide to reactively remove the sulfides and produce an overhead hydrogen sulfide stream and a bicarbonate-containing bottoms stream. The hydrogen sulfide stream can be converted to elemental sulfur in a Claus unit or to sulfuric acid in a sulfuric acid plant. The bicarbonate solution can be washed with liquid hydrocarbon to remove mercaptans and phenols in further preparation for disposal.