小型ガスタービン用低NOx燃焼器の開発

概要

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A dry low NOx gas turbine combustor for cogeneration systems has been developed. In the series of development, a double swirler combustor was first developed. To achieve lower NOx emissions in wider operating range, a three-staged combustor has been newly developed, whose concept is based on the lean premixed multi-staged combustion. The combustor is controlled only by controlling fuel flow without employing complex variable geometries for air flow control. Atmospheric combustion test has demonstrated a superior performance of the three-staged combustor. Less than 13 ppm (O_2 = O%) and more than 99% Combustion efficiency are maintained over the wide range of 25% and 100% engine load. This NOx emissions level is expected to meet the development target of 40 ppm (O_2=0%) if converted empirically to the actual operating pressure. Theoretical consideration of lean premixed multi-staged combustion is made by comparing the temperature distribution measured in the atmospheric combustion test.
社団法人日本ガスタービン学会の論文
1998-06-10