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Title:
EXHAUST GAS TREATMENT APPARATUS AND EXHAUST GAS TREATMENT METHOD
Document Type and Number:
WIPO Patent Application WO/2018/124289
Kind Code:
A1
Abstract:
Provided are an exhaust gas treatment apparatus and an exhaust gas treatment method with which it is possible to recover sulfur contained in a desulfurization waste liquid and to reduce the released amount of the desulfurization waste liquid. An exhaust gas treatment apparatus 1 is provided with: an exhaust desulfurization section 11 that cleans combustion exhaust gas and discharges a desulfurization waste liquid W11 that contains sulfate ions; and a membrane treatment section 12 that includes a separation membrane, which separates the desulfurization waste liquid W11 into a first concentrated liquid W21 in which the sulfate ions are concentrated and a first permeate W22 in which the amount of the sulfate ions has been reduced by means of membrane separation, and that supplies the first concentrated liquid W21 to the exhaust desulfurization section 11 while discharging the permeate W22.

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Inventors:
UKAI NOBUYUKI (JP)
SUZUKI HIDEO (JP)
YOSHIOKA SHIGERU (JP)
SAKURAI HIDEAKI (JP)
KAMITO RYO (JP)
TAKEUCHI KAZUHISA (JP)
ITO YOSHIAKI (JP)
NAKASHOJI HIROSHI (JP)
KATOU AKITOMO (JP)
Application Number:
PCT/JP2017/047299
Publication Date:
July 05, 2018
Filing Date:
December 28, 2017
Export Citation:
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Assignee:
MITSUBISHI HEAVY IND LTD (JP)
International Classes:
C02F1/44; B01D1/16; B01D9/02; B01D53/50; C02F1/04; C02F1/62
Foreign References:
JPS62244427A1987-10-24
JPH09253457A1997-09-30
JPH1085742A1998-04-07
JP2015128754A2015-07-16
JP2012196638A2012-10-18
JPH078750A1995-01-13
JPH10118447A1998-05-12
JPH06154551A1994-06-03
JPH11526A1999-01-06
JP2001000831A2001-01-09
JP2003230897A2003-08-19
JPH1157710A1999-03-02
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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