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. 04, 1988
Filed:
Dec. 24, 1987
Applicant:
Inventor:
Mark E Reno, Villa Park, IL (US);
Assignee:
UOP, Inc., Des Plaines, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C10G / ;
U.S. Cl.
CPC ...
208 91 ; 208 46 ; 208 49 ; 208108 ; 208112 ; 585320 ;
Abstract
Problems associated with the formation of polycyclic aromatic compounds within hydrocracking reaction zones are reduced by a feed pretreating sequence which comprises first contacting the feed with a metal-free alumina to produce polycyclic compounds or their precursors followed by their removal by contacting the feed with a bed of adsorbent such as charcoal. The feed pretreatment steps are operated at an elevated temperature but at a very reduced pressure and preferably substantially free of hydrogen.