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:
Oct. 03, 1989
Filed:
Jul. 06, 1988
Applicant:
Inventor:
Paul T Pendergraft, Tulsa, OK (US);
Assignee:
Amoco Corporation, Chicago, IL (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B / ; C01B / ; C01B / ;
U.S. Cl.
CPC ...
423230 ; 423244 ; 4235 / ;
Abstract
Sulfur species are removed from a Claus plant tail gas stream by contacting with ZnO producing ZnS which is regenerated to ZnO by dilute O.sub.2. Following regeneration, fresh regenerated ZnO in one ZnO absorber is purged with an effective reducting gas stream producing SO.sub.2 emissions while another ZnO absorber is downstream operating under effective absorption conditions for removing thus produced SO.sub.2 from the first ZnO absorber effluent.