B-8 消化ガス用マイクロガスタービン燃焼器を模擬した試験燃焼器の燃焼特性 : 第2報(燃焼II,一般講演)

概要

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The combustion characteristics of the digester-gas-fueled micro gas turbine was investigated using a test combustor simulating the flow field of the micro gas turbine combustor. It was composed of a primary combustion area with a fuel/primary-air premixture injector and a surrounding air injector, and a secondary combustion area. Dam air injector was located between the two area. The combustion experiment showed that in primary area, a premixed flame was formed when the stoichiometric fuel-air mixture ratio was within the flammability limit independent of the dam air injection velocity. Although the flame stability limits for digester gas was narrower than that of methane, the tendency of the flame stability for the two fuels was almost the same. By preheating air up to 873 K the flame of digester gas achieved complete combustion and low NOx emission around 20 ppm.
2008-10-01