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. 29, 1991
Filed:
Oct. 10, 1990
Applicant:
Inventors:
Takashi Yamamoto, Chiba, JP;
Toshio Itoh, Chiba, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10G / ; C10G / ;
U.S. Cl.
CPC ...
208108 ; 208 97 ; 208111 ; 2081 / ; 208120 ; 2081 / ; 208143 ; 208 58 ; 208 68 ;
Abstract
An improved process for hydrogenation of heavy oil is provided by the use of a mixed catalyst. In the process of the present invention, a mixture of a direct desulfurization catalyst and a spent FCC catalyst which is free of molybdenum is used as the mixed catalyst. In accordance with the process of the present invention, a middle distillate fraction having a boiling point falling within the range of 171.degree. to 343.degree. C. can be obtained in high yield.