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. 06, 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
A coal solvation/liquefaction process wherein the coal is contacted with hydrogen and an octahydrophenanthrene-enriched solvent containing OHP and THP in a ratio of OHP/THP greater than 0.4, wherein the OHP is present in an amount of at least 5 percent by weight based upon the total weight of said solvent. The OHP-enriched solvent provides improved coal solvation and increases the production of distillate liquid (62) in a coal solvation/liquefaction (20, 24) process. The desired ratio of OHP/THP is provided by catalytic hydrogenation (68) of a coal liquid distillate stream (64). By increasing the OHP/THP ratio to a value greater than 1, the amount of hydrogen consumed in the process can be significantly reduced.