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:
Jan. 03, 1989
Filed:
Apr. 27, 1987
Applicant:
Inventors:
Hennie Schaper, Amsterdam, NL;
Herman W Kouwenhoven, Amsterdam, NL;
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ; B01J / ;
U.S. Cl.
CPC ...
502 26 ; 208217 ; 2082 / ; 423 68 ; 423150 ; 502 55 ; 502516 ; 502517 ;
Abstract
Method for the regeneration of spent alumina-based catalysts wherein the catalyst firstly is treated with steam at elevated temperature in order to remove at least part of the sulphur; subsequently with an oxygen-containing gas at elevated temperature, in order to burn off carbonaceous matter and finally with a basic medium.