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. 20, 1977
Filed:
May. 17, 1976
Karl W Plumlee, Baytown, TX (US);
Lonnie W Vernon, Baytown, TX (US);
Exxon Research & Engineering Co., Linden, NJ (US);
Abstract
A process for liquefying a particulate coal feed to produce useful petroleum-like liquid products by steps which include: (a) admixing said coal feed, a solvent, particularly a non-donor solvent, and an ortho-quinone compound, to form a coal liquid slurry, and then (b) contacting said coal liquid slurry with molecular hydrogen in a liquefaction zone at temperature and pressure sufficient to hydroconvert and liquefy the coal. In accordance with a preferred embodiment, the product from the liquefaction zone is separated by distillation into fractions inclusive of fractions boiling within about the 350.degree.-850.degree. F. range, and preferably within about the 400.degree.-700.degree. F. range, which can be recycled to the coal liquefaction zone for use in slurrying the coal. The ortho-quinone compound acts as a hydrogenation catalyst, causing adequate hydrogenation of the coal within the coal liquefaction zone in the presence of the molecular hydrogen without any necessity of employing a hydrogen donor solvent, and hence there is no necessity for hydrogenation of the solvent in a separate hydrogenation zone.