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. 13, 1992
Filed:
Apr. 24, 1991
Applicant:
Inventor:
Frank J Elvin, Houston, T;
Assignee:
Coastal Catalyst Technology, Inc., Houston, TX (US);
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ; B01J / ; C10G / ;
U.S. Cl.
CPC ...
502 31 ; 208 / ; 208113 ; 208124 ; 502 30 ; 502 32 ; 502 35 ; 502 50 ; 502516 ;
Abstract
A demetallization process for catalysts used for chemical conversion of hydrocarbons, the catalysts containing at least vanadium as a metal poison, wherein the poisoned catalyst is contacted in a sulfiding zone with a sulfiding agent and a hydrocarbon having a minimum boiling point of about 300.degree. F., the hydrocarbon being at least partially vaporizable at the temperature in the sulfiding zone.