石炭ガス化装置および石炭ガス化方法

Japanese Patent JP4150937

B2

A coal gasification apparatus is constructed such that a gasification furnace and a heat recovery unit for recovering heat obtained by a coal gasifying reaction in the coal gasification furnace without imposing load on subsequent equipment are integrally provided in a single vessel. The heat recovery unit is provided immediately above the gasification furnace and composed of heating tubes extending perpendicularly to a generated gas flow, and the gasification furnace is composed of a lower furnace portion and an upper furnace portion. An upper stage nozzle is disposed in the upper furnace portion and a lower stage nozzle is disposed in the lower furnace portion. The lower furnace portion supplies coal and a large amount of oxidizer via the lower stage nozzle to provide a temperature sufficient to melt an ash content, and the upper furnace portion supplies coal and a small amount of oxidizer via the upper stage nozzle to provide a temperature insufficient to melt the ash content, whereby the deposition of the ash content on furnace walls and the heat recovery unit is prevented. Also, the heating tubes, which constitute the heat recovery unit, are composed of two stages, which are different in surface temperature from each other, whereby the generated gas can be efficiently decreased in temperature to ease influences on constituent materials of the subsequent equipment.

Atsushi Morihara
Shuntaro Koyama
Yoshio Naganuma
Shinji Tanaka
Sadao Takahashi
Takanori Kudo
Eiji Kida
Yoshiki Noguchi

JP54199397A

September 17, 2008

May 19, 1997

Click for automatic bibliography generation  

Babcock Hitachi Ltd.

C10J3/46; C10J3/48; F01K23/10

JP59172589A
JP7097579A
JP61207492A
JP57179289A
JP58127789A
JP8104884A
JP61228093A
JP7286186A
JP63297736A
JP8073869A
JP55029593A
JP7332612A
JP58194987A
JP60158293A

Hirotsugu Yoshioka
Akio Takahashi

Previous Patent: 自動雪降ろし機

Next Patent: CONTROL DEVICE FOR EXHAUST APPARATUS