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:
Sep. 29, 1992
Filed:
Dec. 21, 1989
Applicant:
Inventors:
Stephen N Vaughn, Baton Rouge, LA (US);
Michael Siskin, Livingston, NJ (US);
Alan Katritzky, Gainesville, FL (US);
Glen Brons, Phillipsburg, NJ (US);
Steve N Reynolds, Baton Rouge, LA (US);
Claude C Culross, Baton Rouge, LA (US);
Dan R Neskora, Baton Rouge, LA (US);
Assignee:
Exxon Research and Engineering Company, Florham Park, NJ (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C10G / ;
U.S. Cl.
CPC ...
208430 ; 208414 ; 208419 ; 208420 ; 208428 ; 208435 ;
Abstract
This invention is directed to a process for pretreating coal preliminary to a primary liquefaction or hydroconversion block. In the process, a coal feed, slurried in a solvent, is reacted with carbon monoxide in the presence of a chemical promoter at an elevated temperature and pressure. The promoter enhances the depolymerization and hydrogenation of the coal during pretreatment.