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:
Feb. 07, 1984
Filed:
May. 20, 1981
Applicant:
Inventors:
Vincent A Durante, East Brunswick, NJ (US);
Dennis J Olszanski, Erie, PA (US);
William J Reagan, Englishtown, NJ (US);
Stanley M Brown, Scotch Plains, NJ (US);
Assignee:
Engelhard Corporation, Edison, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10G / ; B01J / ;
U.S. Cl.
CPC ...
208114 ; 208 / ; 502 20 ;
Abstract
High gas and coke make due to contamination of a zeolitic fluid cracking catalyst by metal species such as nickel and vanadium during a cracking process is reduced by adding a phosphorus compound to the process. When the catalyst already contains a metals passivating agent or such agents are used in the cracking process further significant reduction in gas and coke make is realized without significant increase in regenerator temperature by adding additional phosphorus.