Title:
EXHAUST-GAS TREATMENT DEVICE AND EXHAUST-GAS TREATMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2011/145534
Kind Code:
A1
Abstract:
Disclosed are an exhaust-gas treatment device and an exhaust-gas treatment method that allow stable operation over long periods of time. The disclosed exhaust-gas treatment device (100), which removes SO3 from a combustion exhaust gas, is provided with: a spray means (140) which sprays an aqueous solution containing a dissolved salt into a flue (130) upstream of a wet desulfurization device (114); and wall-cleaning piping (160), along the walls of the flue (130) in the circumferential direction thereof, which supplies wall-cleaning water to the walls of the flue, thereby forming a liquid film of said wall-cleaning water across the entire surface of the region of the flue (130) to which the aforementioned dissolved salt becomes attached. In the disclosed exhaust-gas treatment method, which removes SO3 from a combustion exhaust gas, an aqueous solution containing a dissolved salt is sprayed into a flue (130) upstream of a wet desulfurization device (114), and wall-cleaning water is supplied to the walls of the flue (130), thereby forming a liquid film of said wall-cleaning water across the entire surface of the region of the flue (130) to which the aforementioned dissolved salt becomes attached.
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Inventors:
HAMAGUCHI RYOKICHI (JP)
NAGAYASU HIROMITSU (JP)
UEDA YASUTOSHI (JP)
NOGUCHI TOSHIHIDE (JP)
KAGAMI MORIO (JP)
NAGAYASU HIROMITSU (JP)
UEDA YASUTOSHI (JP)
NOGUCHI TOSHIHIDE (JP)
KAGAMI MORIO (JP)
Application Number:
PCT/JP2011/061105
Publication Date:
November 24, 2011
Filing Date:
May 13, 2011
Export Citation:
Assignee:
MITSUBISHI HEAVY IND MECHATRONICS SYSTEMS LTD (JP)
HAMAGUCHI RYOKICHI (JP)
NAGAYASU HIROMITSU (JP)
UEDA YASUTOSHI (JP)
NOGUCHI TOSHIHIDE (JP)
KAGAMI MORIO (JP)
HAMAGUCHI RYOKICHI (JP)
NAGAYASU HIROMITSU (JP)
UEDA YASUTOSHI (JP)
NOGUCHI TOSHIHIDE (JP)
KAGAMI MORIO (JP)
International Classes:
B01D53/50; B01D53/18; B01D53/77
Foreign References:
JP2006326575A | 2006-12-07 | |||
JPS50119637U | 1975-09-30 | |||
JPS5183075A | 1976-07-21 | |||
JP2007296447A | 2007-11-15 |
Attorney, Agent or Firm:
FUJITA, Takaharu et al. (JP)
Takaharu Fujita (JP)
Takaharu Fujita (JP)
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Claims: