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:
Sep. 21, 1976
Filed:
Apr. 19, 1974
Applicant:
Inventor:
George J Czajkowski, Chicago, IL (US);
Assignee:
Universal Oil Products Company, Des Plaines, IL (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C23F / ; C23F / ; C23F / ;
U.S. Cl.
CPC ...
134-2 ; 21 / ; 21 / ; 134 31 ; 148 16 ; 148 206 ; 208 47 ; 252 87 ;
Abstract
A method for the inhibition of metal scale formation in a hydrocarbon processing unit prior to catalyst loading and start-up comprising the steps: circulating a gas comprising a sulfiding component; heating the hydrocarbon conversion zone to at least hydrocarbon conversion temperature; and, collecting loosely bound metal scale until scale production abates. The recurring problem of catalyst bed inlet plugging is solved by removing indigenous metal scale, dust and debris and by passivating the virgin metallic surfaces before the initial start-up of a hydrocarbon processing unit.