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. 17, 1985
Filed:
Apr. 12, 1983
Nobuyoshi Hirokoh, Tokyo, JP;
Yoichi Kageyama, Isehara, JP;
Yukio Nakako, Takarazuka, JP;
Tetsuo Matsumura, Kobe, JP;
Mitsubishi Chemical Industries Ltd., Tokyo, JP;
Kabushiki Kaisha Kobe Seikosho, Kobe, JP;
Idemitsu Kosan Company Limited, Tokyo, JP;
Asia Oil Company Limited, Tokyo, JP;
Nippon Brown Coal Liquefaction Co., Ltd., Tokyo, JP;
Abstract
A process for converting coal, comprising, subjecting a slurry composed essentially of coal, a hydrocarbon solvent and a hydrogenation catalyst to primary hydrogenation to liquify the coal, separating the ash content of said coal from the reaction product thereby obtaining a liquified product, subjecting at least a portion of the liquified product to secondary hydrogenation in the presence of a hydrogenation catalyst thereby converting the liquified product to light oil product, the secondary hydrogenation step being a point of supply of hydrogenation catalyst to the coal conversion system, separating the hydrogenation catalyst from the reaction product of the secondary hydrogenation step, and returning said separated hydrogenation catalyst to the primary hydrogenation step where it is used as the catalyst for primary hydrogenation of said slurry.