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Title:
METHOD AND DEVICE FOR TREATING AMMONIA IN GASIFICATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2011/055500
Kind Code:
A1
Abstract:
An ammonia off-gas (17) (ammonia) is separated and recovered by means of an ammonia recovery device (13) from gases (6) yielded by gasification in a gasification furnace (1) of a two-column gasification system. Part of the ammonia off-gas (17) is injected as a reducing agent for denitration into the inlet of a cyclone (10), which is for separating a fluidized medium (4) heated in a combustion furnace (2) from a combustion discharge gas (9) and returning the fluidized medium (4) to the gasification furnace (1), and is then brought into contact with the high-temperature combustion discharge gas (9) to reduce and remove NOx through non-catalytic decomposition. Simultaneously therewith, the excess of the ammonia off-gas (17) is supplied to primary air (8) to be introduced into the combustion furnace (2) and is thereby burned off.

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Inventors:
MATSUZAWA YOSHIAKI (JP)
OHARA HIROAKI (JP)
HAMADA KOKI (JP)
Application Number:
PCT/JP2010/006236
Publication Date:
May 12, 2011
Filing Date:
October 21, 2010
Export Citation:
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Assignee:
IHI CORP (JP)
MATSUZAWA YOSHIAKI (JP)
OHARA HIROAKI (JP)
HAMADA KOKI (JP)
International Classes:
C10J3/54; B01D53/56; C10J3/00; F23C10/18; F23J7/00; F23J15/00
Foreign References:
JP2003003177A2003-01-08
JP2007063539A2007-03-15
JP2007252975A2007-10-04
JPH1157397A1999-03-02
Attorney, Agent or Firm:
Patent firm YAMADA PATENT OFFICE (JP)
Patent business corporation Yamada patent firm (JP)
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