Patents Assigned to MITSUBISHI HEAVY INDUSTRIES ENVIRONMENT ENGINEERING CO., LTD.
  • Exhaust-gas treatment apparatus and exhaust-gas treatment method
    Patent number: 9155993
    Abstract: An object is to provide an exhaust-gas treatment apparatus capable of realizing a dissolved-salt spray method easily and at low cost. An exhaust-gas treatment apparatus that removes SO2and SO3contained in combustion exhaust gas includes a desulfurization apparatus based on the lime-gypsum method. Desulfurizing effluent, containing dissolved salt, from the desulfurization apparatus is sprayed to an upstream side of the desulfurization apparatus to remove SO3. A wet electrical dust precipitator may be provided downstream of the desulfurization apparatus. Furthermore, effluent from the wet electrical dust precipitator may be made to merge with the desulfurizing effluent from the desulfurization apparatus.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: October 13, 2015
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENVIRONMENT ENGINEERING CO., LTD.
    Inventors: Hiromitsu Nagayasu, Yasutoshi Ueda, Ryokichi Hamaguchi, Susumu Okino, Morio Kagami
  • EXHAUST-GAS TREATMENT APPARATUS AND EXHAUST-GAS TREATMENT METHOD
    Publication number: 20100329957
    Abstract: An object is to provide an exhaust-gas treatment apparatus capable of realizing a dissolved-salt spray method easily and at low cost. An exhaust-gas treatment apparatus that removes SO2 and SO3 contained in combustion exhaust gas includes a desulfurization apparatus based on the lime-gypsum method. Desulfurizing effluent, containing dissolved salt, from the desulfurization apparatus is sprayed to an upstream side of the desulfurization apparatus to remove SO3. A wet electrical dust precipitator may be provided downstream of the desulfurization apparatus. Furthermore, effluent from the wet electrical dust precipitator may be made to merge with the desulfurizing effluent from the desulfurization apparatus.
    Type: Application
    Filed: August 31, 2010
    Publication date: December 30, 2010
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENVIRONMENT ENGINEERING CO., LTD.
    Inventors: Hiromitsu Nagayasu, Yasutoshi Ueda, Ryokichi Hamaguchi, Susumu Okino, Morio Kagami
  • EXHAUST-GAS TREATMENT APPARATUS AND EXHAUST-GAS TREATMENT METHOD
    Publication number: 20100119428
    Abstract: An object is to provide an exhaust-gas treatment apparatus capable of realizing a dissolved-salt spray method easily and at low cost. An exhaust-gas treatment apparatus that removes SO2 and SO3 contained in combustion exhaust gas includes a desulfurization apparatus based on the lime-gypsum method. Desulfurizing effluent, containing dissolved salt, from the desulfurization apparatus is sprayed to an upstream side of the desulfurization apparatus to remove SO3. A wet electrical dust precipitator may be provided downstream of the desulfurization apparatus. Furthermore, effluent from the wet electrical dust precipitator may be made to merge with the desulfurizing effluent from the desulfurization apparatus.
    Type: Application
    Filed: March 31, 2008
    Publication date: May 13, 2010
    Applicant: MITSUBISHI HEAVY INDUSTRIES ENVIRONMENT ENGINEERING CO., LTD.
    Inventors: Hiromitsu Nagayasu, Yasutoshi Ueda, Ryokichi Hamaguchi, Susumu Okino, Morio Kagami