Kabushiki Kaisha Kobe Seiko Sho

Idemitsu Kosan Company, Limited

Mitsubishi Kasei Corporation

Cosmo Oil Co., Ltd.

Mitsubishi Kasei Kogyo Kabushiki Kaisha

Nippon Brown Coal Liquefaction Co., Ltd.

Idemitsu, Kosan Kabushiki-kaisha

Aziasekiyu Kabushiki Kaisha

Yasuo Sugino

Tetsuo Matsumura

Hiroshi Yoshimura

Hiroyuki Murata

Osamu Okuma

Toshio Ohzawa

Kaizaburo Saito

Masanobu Yamao

Kazuhiro Mae

Osamu Ohkuma

Saburo Sawada

Shun-ichi Yanai

Shun'ichi Yanai

Takao Nishikawa

Koji Murakoshi

Akihiro Kawashima

Tatsuo Hirano

Minoru Wakabayashi

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.

Method of coil liquefaction by hydrogenation

An apparatus for classifying particles entrained by a solid-gas jet stream includes a feed nozzle, a cyclonic wall having an inner arcuate wall, and an auxiliary inner arcuate wall provided at an outlet port of the nozzle. The solid-gas stream is preliminarily bent along the auxiliary inner wall so that the particles are preliminarily or roughly classified into undersized and oversized particles by the action of the centrifugal force before they are classified by the cyclonic wall. The apparatus may include a collecting port disposed downstream of the nozzle outlet port and spaced slightly away from the inner arcuate wall of the cyclonic wall. The collecting port permits the apparatus to collect the undersized particles in a more effective manner.

Apparatus for classifying particles

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.

Method of treating brown coal for liquefaction

Growing community of inventors

Kobe, Japan

Yasuo Sugino