Jgc Corporation

The Tokyo Electric Power Company, Incorporated

The Japan Steel Works, Ltd.

Yoshinori Suto

Jin Ogawa

Masao Tsurui

Takeshi Yamaguchi

Tsutomu Katagiri

Koji Tamura

Shinichi Tokuda

Teruo Nagai

Chiaki Suyama

Jun Kakizaki

Yoshihiko Iwamoto

Akio Furuta

Takao Takinami

Masayuki Yui

Kazuhiro Shibata

Shinji Takano

Katsuaki Osato

Muneo Omura

Takashi Goto

Masanori Asakura

This method of upgrading a biomass comprises: an upgrading step for performing upgrading treatment of a cellulose based biomass with an oxygen/carbon atomic ratio of at least 0.5, in presence of water and under a pressure of at least saturated water vapor pressure, and reducing said oxygen/carbon atomic ratio of said biomass to no more than 0.38, and a separation step for separating an upgraded reactant obtained from said upgrading step into a solid component and a liquid component.

Method of upgrading biomass, upgraded biomass, biomass water slurry and method of producing same, upgraded biomass gas, and method of gasifying biomass

An object of the present invention is to continuously feed an object to be treated to a high-pressure reactor which treats the object to be treated containing 10 mass % or more of water under high pressure, while preventing backflow of a high-pressure atmosphere from the high-pressure reactor. This is embodied by making a configuration such that the object to be treated is fed to the high-pressure reactor connected to a discharge port of a screw feeder which is provided with a feed unit for the object to be treated and the discharge port on one end side and the other end side respectively and forms a high-pressure atmosphere pressurized to, for example, 2 MPa or higher, while air-tightness between the high-pressure atmosphere and the one end side of the screw feeder is maintained by a sealing action of an accumulation compressed on the other end side of the screw feeder.

High-pressure treatment apparatus and method for operating high-pressure treatment apparatus

In a coal-water slurry producing system, low grade coal is wet-ground to not greater than 3 mm in particle size to produce a ground coal slurry. An upgrading treatment is applied to the ground coal slurry under a pressurized hydrothermal atmosphere not less than 300.degree. C. to produce an upgraded coal slurry. The upgraded coal slurry is subjected to a dehydration treatment to produce an upgraded coal cake and a filtrate. A final coal-water slurry is produced from the upgraded coal cake. The filtrate is recycled for producing the ground coal slurry. A slurry transfer mechanism is provided in the coal-water slurry producing system for ensuring a stable transfer of the upgraded coal slurry from a high-pressure slurry vessel to a low-pressure slurry vessel.

Coal-water slurry producing process, system therefor, and slurry

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Yokohama, Japan

Yoshinori Suto