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:
Jan. 26, 1982
Filed:
Feb. 05, 1980
Shirley C Tsai, Pittsburgh, PA (US);
Howard G McIlvried, III, Pittsburgh, PA (US);
Gulf Research & Development Company, Pittsburgh, PA (US);
Abstract
The OHP content of an OHP- and THP-containing solvent is enriched by contacting the solvent with hydrogen in the presence of a supported catalyst comprising Group VIB and Group VIII metals under conditions to increase the OHP/THP ratio in the solvent to a level greater than 0.4 and preferably greater than 1. The preferred catalyst contains tungsten where it is desired to provide an OHP/THP ratio greater than 1 in the OHP-enriched solvent, and also contains titanium to improve the hydrogen selectivity of the catalyst so as to enhance the preservation of aromatics in the hydrogenated solvent. The OHP-enriched solvent provides increased solvation of coal and improved yields of liquid fuel product in a coal liquefaction process which utilizes the solvent.