To provide a fluidized bed gasification furnace capable of controlling easily and precisely a circulation amount of a fluidizing medium, and capable of transferring easily and stably a pyrolized residue and heat between a gasification chamber and a combustion chamber.
This fluidized bed gasification furnace 1 is provided with the gasification chamber 10 for fluidizing the fluidizing medium in its inside, and the combustion chamber 20 for fluidizing the fluidizing medium in its inside. A raw material is pyrolized thermally in the fluidizing medium, in the gasification chamber 10, to generate pyrolized gas and the pylolized residue. The combustion chamber 20 has a combustion part 22 for combusting the pylolized residue to heat the fluidizing medium, and a sedimentation part 24 for sedimenting the heated fluidizing medium. The fluidized bed gasification furnace 1 is provided with a diffuser 71 for supplying fluidizing gas to an area 22a of the combustion part 22 adjacent to the sedimentation part 24 of the combustion chamber 20 to move the fluidizing medium from the combustion part 22 to the sedimentation part 24, and a circulation controller 82 for regulating a flow rate of the fluidizing gas injected from the first diffuser 71 to control the circulation amount of the fluidizing medium.
TOYODA YUKI
| WO2004016716A1 | 2004-02-26 |
Shintaro Hotta
Ryoji Kosugi
Tomohiro Mori
Tetsuya Hirosawa
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