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Title:
CIRCULATING FLUIDIZED BED SEPARATION COMBUSTION METHOD AND COMBUSTION DEVICE USING THE METHOD
Document Type and Number:
Japanese Patent JP2006292275
Kind Code:
A
Abstract:

To attain high-temperature, high-efficiency combustion by reducing NOx or N2O concentrations in combustion exhaust gas which affect the environment and suppressing ash fusion.

In this method, circulating fluidized bed combustion is separated to three steps of gasification of solid fuel by thermal decomposition, combustion of char resulted therefrom, and combustion of the gasified gas. The char of the solid fuel supplied from a gasifying furnace 10 for gasifying the solid fuel is burnt in a lower part of a combustion furnace 20 while supplying an oxidizer, and the gasified gas generated by gasifying the solid fuel within the gasifying furnace and an oxidizer are supplied to an upper part (a central area A and an upper area B) of the combustion furnace 20 to burn the gasified gas in the upper part of the combustion furnace.


Inventors:
Kyo, Mitsufumi
Suda, Toshiyuki
Murakami, Takahiro
Fujimori, Toshiro
Application Number:
JP2005000113528
Publication Date:
October 26, 2006
Filing Date:
April 11, 2005
Export Citation:
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Assignee:
ISHIKAWAJIMA HARIMA HEAVY IND CO LTD
International Classes:
F23C10/00; F23C10/02; F23G5/027; F23G5/16; F23G5/30; F27B15/02; F27D5/00; F27D7/02; F27D17/00
Domestic Patent References:
JPH08219425A
JPH04350409A
JPH0979543A
JP2002256274A
JP2003253272A
Attorney, Agent or Firm:
長門 侃二