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:
Dec. 14, 1993
Filed:
Sep. 28, 1990
Tetsuo Matsumura, Kobe, JP;
Kaizaburo Saito, Kobe, JP;
Osamu Okuma, Kobe, JP;
Hiroshi Yoshimura, Kobe, JP;
Yasuo Sugino, Kobe, JP;
Shun-ichi Yanai, Kobe, JP;
Tatsuo Hirano, Hyogo, JP;
Kazuhiro Mae, Kobe, JP;
Koji Murakoshi, Kobe, JP;
Kabushiki Kaisha Kobe Seiko Sho, Kobe, JP;
Mitsubishi Kasei Corporation, Tokyo, JP;
Idemitsu Kosan Company Limited, Tokyo, JP;
Cosmo Oil Co., Ltd., Tokyo, JP;
Nippon Brown Coal Liquefaction Co., Ltd., Tokyo, JP;
Abstract
A method for hydro-liquefying coal, the method comprising preheating a slurried mixture of a pulverized coal and a solvent, the preheated mixture being supplied to a plurality of reactors; separating a gaseous content from the products resulting from the reaction; dehydrating the gaseous content and removing a light oil content therefrom, thereby obtaining hydrogen-content gases; and recycling the hydrogen-content gases at least to the first reactor and supplying it to the bottom thereof so that the light oil content in the solvent is stripped.