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. 22, 1987
Filed:
Feb. 04, 1986
Tetsuo Matsumura, Kobe, JP;
Toshio Ohzawa, Kobe, JP;
Akihiro Kawashima, Kobe, JP;
Osamu Ohkuma, Kobe, JP;
Saburo Sawada, Kobe, JP;
Shun'ichi Yanai, Kobe, JP;
Hiroshi Yoshimura, Kobe, JP;
Yasuo Sugino, Kobe, JP;
Kabushiki Kaisha Kobe Seiko Sho, Kobe, JP;
Idemitsukosan Kabushiki Kaisha, Tokyo, JP;
Mitsubishikaseikogyo Kabushiki Kaisha, Tokyo, JP;
Aziasekiyu Kabushiki Kaisha, Tokyo, JP;
Abstract
A starting slurry composed of raw brown coal and a solvent is heated and pressurized, subjected to gas-liquid separation and dehydration and then to hydrogenation/liquefaction. The CO.sub.2 -containing gas produced in the preheating/dehydration step and/or a CO.sub.2 -containing gas supplied from outside the system is blown into the slurry in the above-mentioned preheating/dehydration step, whereby carbonate-forming metal components in the brown coal are converted to the carbonates thereof in advance. In this manner, the hydrogenation/liquefaction efficiency is improved, and stabilized long-term continuous operation is attained.