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:
Aug. 07, 1979
Filed:
Feb. 13, 1978
Applicant:
Inventors:
Emmett H Burk, Glenwood, IL (US);
Jin S Yoo, South Holland, IL (US);
John A Karch, Chicago, IL (US);
Jui-Yuan Sun, South Holland, IL (US);
Assignee:
Atlantic Richfield Company, Philadelphia, PA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ; B01J / ; C10G / ;
U.S. Cl.
CPC ...
208120 ; 208113 ; 2082 / ; 208252 ; 2524 / ; 252413 ;
Abstract
An improved catalytic cracking process wherein partial demetallization of a cracking catalyst is employed. The demetallization process involves contacting the catalyst with alternate reductive and oxidative aqueous washes. A preferred oxidative wash medium comprises an aqueous solution of hydrogen peroxide. The vanadium and nickel metals may be recovered from used wash solutions for metallurgical use.