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:
May. 09, 1989
Filed:
Jul. 09, 1987
Applicant:
Inventors:
Chaya Venkat, Princeton, NJ (US);
Darrell D Whitehurst, Titusville, NJ (US);
Assignee:
Mobil Oil Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
C10G / ; C10G / ;
U.S. Cl.
CPC ...
208111 ; 208 / ; 208120 ; 208125 ;
Abstract
In the cataytic cracking of gas oils or heavier feeds, retarded catalyst aging is achieved by adding lighter saturated hydrocarbons such as paraffins and/or cycloparaffins to the feed together with employing a highly siliceous zeolite as the cracking catalyst. The unconverted light hydrocarbon may be recovered and recycled. The invention is applicable to fluid catalytic cracking for the manufacture of gasoline and light fuel oil, and also to the catalytic dewaxing process wherein normal paraffins are selectively cracked to reduce the pour point of a fuel oil or of a lubricant based stock.