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:
Apr. 12, 1977
Filed:
Jul. 18, 1975
Applicant:
Inventors:
William H Byler, Allison Park, PA (US);
Angelo A Montagna, Monroeville, PA (US);
Assignee:
Gulf Research & Development Company, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10G / ; C10G / ;
U.S. Cl.
CPC ...
208 89 ; 208 49 ; 208 58 ; 208108 ; 208147 ; 208212 ;
Abstract
A process comprising passing a first stream comprising residual oil and hydrogen downwardly through a zone containing hydrodesulfurization catalyst under hydrodesulfurization conditions until said catalyst is deactivated. Subsequently, passing a second stream of residual oil and hydrogen upwardly through the deactivated hydrodesulfurization catalyst under thermal cracking conditions, including a temperature above the hydrodesulfurization temperature.