TS-69 Development of a Dry, Low-NO_x Combustor for a 650kW-Class Gas Turbine(Session C-7 NO_x Reduction 2)

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This paper describes a development of a dry, low-NO_x combustor for a new 650kW-class regenerative cycle industrial gas turbine. The NO_x emissions target is less than 25ppm (15% O_2) accompanied with more than 99.5% of combustion efficiency over 50-100% load range. To obtain the broad low-emissions operation range, three-stage combustion was applied for the combustion system. For the first combustion stage, a hybrid burner system that combines a diffusion burner and a lean premixed burner was designed. In addition, a supplemental combustion technique is adopted for the second and third-stage combustion. Prior to the actual engine test, a combustor rig test was conducted and a good performance of the combustor was obtained. At the present time, the development of the gas turbine has not been completed, but it was confirmed that the combustion system had achieved its performance targets through the engine tests. Since then, continuous improvements to the combustor and the total gas turbine system have been carried out.
社団法人日本ガスタービン学会の論文
1999-11-14