Mitsubishi Heavy Industries Limited

Mitsubishi Heavy Industries Environment Engineering Co., Ltd.

Morio Kagami

Yasutoshi Ueda

Hiromitsu Nagayasu

Susumu Okino

Kazutaka Tomimatsu

Toshihide Noguchi

Chikayuki Nagata

Ryokichi Hamaguchi

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 SOand SOcontained 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 SO. 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.

Exhaust-gas treatment apparatus and exhaust-gas treatment method

An exhaust gas treatment system is provided that can sufficiently remove pollutants such as SOcontained in combustion exhaust gas at low cost. In the exhaust gas treatment system for removing pollutants such as SOcontained in combustion exhaust gas, there is provided dissolved salt aqueous solution spraysA,B, andC, that spray an NaSOaqueous solution obtained from desulfurization effluent of a wet desulfurization system, into a flue though which the combustion exhaust gas flows.

Exhaust gas treatment system and exhaust gas treatment method

An apparatus, which collects particulate matter contained in a gas flowing through a flow path formed in a cylindrical shape having an outer surface and an inner surface, includes: an outer shell that forms the outer surface of the flow path; a ground electrode that forms the inner surface of the flow path; a filter layer that is arranged between the outer shell and the ground electrode; and a discharge electrode that generates, when a voltage is applied, an ion wind inducing a secondary flow toward the ground electrode in a direction transverse to the flow path. The secondary flow passes through the ground electrode and the filter layer having a predetermined aperture ratio.

Dust collector

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Hyogo, Japan

Morio Kagami