IGTC-142 Engine Testing of a Low-NO_x Gas Turbine Combustor with Air Split Valves(Organized Session VI LOW EMISSION COMBUSTORS)

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概要

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• This paper describes the progress in engine testing of a low-NO_x combustor for natural gas-fueled gas turbine engines. A lean premixed approach with a variable geometry system is being used to achieve low NO_x emissions without deteriorating combustion efficiency over a wide operating range of the engine. A simple cycle, single shaft, 250-kW gas turbine engine of a pressure ratio of eight is being used for the test. The split of air to combustion and dilution is controlled by modulating butterfly air valves and fuel is staged to the non-premixed pilot burner and premixed main burners. The engine was operated in the lean-premixed, low NO_x emissions mode from idling to full load by the modulation of combustion air flow. The minimum NO_x emissions level for a given combustion efficiency decreased with increasing power. At operating conditions from 90% to full load operations, NO_x emissions ranging from 12ppm (at 15% O_2) to 8ppm were measured with combustion efficiencies from 99.9 to 99.0%.

• 公益社団法人日本ガスタービン学会の論文

著者

• Shimodaira K.

  Aeroengine Division National Aerospace Laboratory

• Hayashi S.

  Thermofuid Dynamics Division, National Aerospace Laboratory

• Yamada H.

  Thermofuid Dynamics Division, National Aerospace Laboratory

関連論文

• IGTC-52 High Combustion Efficiency and NO_x Reduction by 2-Stage Combustion in Methane-Fueled Ram Combustor(Session B-8 COMBUSTION III)
• IGTC-142 Engine Testing of a Low-NO_x Gas Turbine Combustor with Air Split Valves(Organized Session VI LOW EMISSION COMBUSTORS)
• IGTC-51 Lean Non-Premixed Combustion for Low-NO_x Gas Turbine Combustor(Session B-8 COMBUSTION III)

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