Mitsubishi Heavy Industries Technical Review
    Vol. 52 No. 2 (2015)   Mitsubishi Hitachi Power Systems
    Technical Papers

    Highly-Efficient Removal of Toxic Trace Elements and Particulate Matter in Flue Gas Emitted from Coal-fired Power Plants by Air Quality Control System (AQCS)

    Hirofumi Kikkawa,
    Wakako Shimohira,
    Tatsuto Nagayasu,
    Masashi Kiyosawa,
    Yoshinori Nagai,
    Seiji Kagawa

    Both at home and abroad, over the years, Mitsubishi Hitachi Power Systems, Ltd. (MHPS) has provided technologies to eliminate nitrogen oxides, sulfur oxides, etc., in flue gas from thermal power plants and is in recent years enthusiastic for the technical development of AQCS to upgrade such technologies, as well as to remove toxic trace components. This technology totally and efficiently operates high-functioning NOx reduction catalysts, heat exchangers, dry electrostatic precipitators and wet flue gas desulfurization equipment. We have so far examined for demonstration actual coal-fired emissions with the 1.5MW pilot test plant ( combustion and flue gas treatment test facility) of Kure Works (Akitsu District), a 5-MW pilot plant in the U.S. (at Crist Power Station) and a 720-MW commercial power plant in the U.S. (at Miller Power Station), finding toxic trace elements (mainly mercury and selenium), particulate matter and blue plume-/acid rain-causing SO3 to be removed to a significant extent.