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:
Mar. 06, 1979
Filed:
Oct. 26, 1976
Applicant:
Inventor:
Godfrey C Chinchen, Stockton-on-Tees, GB;
Assignee:
Imperial Chemical Industries Limited, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C01B / ;
U.S. Cl.
CPC ...
252373 ; 423656 ;
Abstract
A carbon monoxide shift process at a pressure of at least 15 atm. abs. is carried out over an oxidic and/or sulphidic catalyst of a specified level of activity in a 2-zone bed. The upstream zone has an outlet temperature in the range 350.degree.-400.degree. C. and the downstream zone has a higher outlet temperature, for example up to 550.degree. C. The catalyst in the upstream zone differs from the catalyst in the downstream zone by containing more catalytic material per unit volume and/or by having a lower area/volume ratio and/or by having a lower porosity.