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Title:
EXHAUST GAS TREATMENT SYSTEM AND EXHAUST GAS TREATMENT METHOD
Document Type and Number:
Japanese Patent JP2015166090
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an exhaust gas treatment system and an exhaust gas treatment method capable of greatly reducing the entrainment of a COabsorbing liquid at a time of discharging CO-removed exhaust gas to the outside of a system, and ensuring appropriate exhaust gas treatment.SOLUTION: An exhaust gas treatment system comprises: a desulfurizer 15 removing sulfur oxides contained in exhaust gas 12 discharged from a boiler 11; a cooling tower 16 provided downstream of the desulfurizer 15, removing the sulfur oxides remaining in the exhaust gas 12, and reducing a gas temperature; a COrecovery device 17 that includes a COabsorption tower removing COcontained in the exhaust gas 12 by contacting COwith a COabsorbing liquid and an absorbing liquid regeneration tower releasing COfrom the COabsorbing liquid to recover COand regenerating the COabsorbing liquid; and a heat exchanger 33 provided on an inlet passage of an electric precipitator and reducing an exhaust gas temperature, the heat exchanger 33 transforming mist generation substances in the exhaust gas 12 from a gaseous state to a mist state and collecting the mist generation substances in the mist state in soot dust in the exhaust gas 12 to thereby remove the mist generation substances.

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Inventors:
NAGAYASU TATSUTO
KAMIJO TAKASHI
INUI MASAYUKI
OISHI GOJI
NAGAYASU HIROTSUGU
TANAKA YUJI
HIRATA TAKUYA
TSUJIUCHI TATSUYA
OKINO SUSUMU
KAMIYAMA NAOYUKI
YOSHIHARA SEIJI
Application Number:
JP2015132031A
Publication Date:
September 24, 2015
Filing Date:
June 30, 2015
Export Citation:
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Assignee:
MITSUBISHI HEAVY IND LTD
International Classes:
B01D53/62; B01D53/14; B01D53/50; B01D53/56; B01D53/75; B01D53/78; B01D53/80; B01D53/96; B03C3/019; B03C3/02; C01B32/50
Domestic Patent References:
JPH07241440A1995-09-19
JP2002326015A2002-11-12
JPS61178022A1986-08-09
Foreign References:
WO2008078722A12008-07-03
Attorney, Agent or Firm:
Hiroaki Sakai



 
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