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:
Mar. 15, 1994
Filed:
Aug. 04, 1992
Applicant:
Inventors:
George M Kramer, Berkeley Heights, NJ (US);
Edwin R Ernst, Belle Meade, NJ (US);
Chang S Hsu, Bridgewater, NJ (US);
Gopal H Singhal, Baton Rouge, LA (US);
Peter S Maa, Baton Rouge, LA (US);
Assignee:
Exxon Research and Enginnering Company, Florham Park, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10G / ; C10G / ; C10G / ;
U.S. Cl.
CPC ...
208400 ; 208420 ; 208421 ; 208422 ; 208424 ; 208428 ; 208435 ;
Abstract
A process for hydroprocessing coal to hydrocarbon oils wherein coal is depolymerized at low temperatures by contacting finely divided coal with a hard acid and soft base. The depolymerized coal is then hydroprocessed to hydrocarbon oils by forming a mixture with a coal conversion catalyst or precursor thereof, and hydroprocessing the mixture at temperatures of from 250.degree. to 550.degree. C. and hydrogen partial pressures of from 2100 to 35000 kPa.