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

    Dry Low-NOX Combustion Technology for Novel Clean Coal Power Generation Aiming at the Realization of a Low Carbon Society

    Satoschi Dodo,
    Mitsuhiro Karishuku,
    Nobuo Yagi,
    Tomohiro Asai,
    Yasuhiro Akiyama

    Integrated coal gasification combined cycle (IGCC), which is considered to be a promising next-generation coal-fired power generation technology, is a clean coal-firing technology in which coal is converted into "hydrogen-containing gas" before being combusted. However, it has issues particular to hydrogen-rich fuel. Mitsubishi Hitachi Power Systems, Ltd. (MHPS) has participated in a New Energy and Industrial Technology Development Organization (NEDO) project since 2008. Combining rapid mixing and flame lifting technologies, MHPS developed a groundbreaking distributed lean burning technology for low-NOx combustion, which is applicable to IGCC coupled with a carbon dioxide (CO2) capture facility. The characteristics of this combustion technology were examined using an actual-scale gas turbine at the EAGLE pilot plant, located in the Wakamatsu Research Institute of Electric Power Development Co., Ltd. (aka J-POWER). Based on the obtained results, we successfully installed the world's first dry low-NOx combustor for IGCC in the H-100 gas turbine, which is to be supplied to the IGCC demonstration test facility (currently under construction) of Osaki CoolGen Corporation (OCG). Although the H-100 gas turbine was formerly referred to as the H-80 because of the permitted output of the first unit (approx. 80 MW), it was thus renamed in accordance with the rated output of the gas turbine.