C-13 水素含有燃料焚きガスタービン用ドライ低NOx燃焼器の燃料特性 : 第2報(水素含有燃料・燃焼,一般講演)

概要

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An oxygen-blown integrated coal gasification combined cycle (IGCC) plant with pre-combustion carbon dioxide capture and storage (CCS) is one of the most promising means of zero- emission generation of power from coal. To satisfy both lower emission and higher efficiency, a dry low NOx combustor for hydrogen-rich fuels is required in IGCC with CCS. A prototype combustor based on a multiple injection burner is tested under medium pressure (0.6MPa) to meet above requirement. From the test results, the following conclusions are obtained: (1) Tested combustor allows stable combustion without any flashback or any blowout for fuels simulating 0%, 30% CCS. (2) Fuel nozzle with a smaller injection hole is effective to suppress combustion oscillation because of higher penetration, but ineffective to reduce NOx emission because of lower mixing. (3) Air injection angle arrangement, which drives outer region of main burner flame to downstream, is effective to suppress combustion oscillation and to reduce perforated plate metal temperature.
2011-07-06