Ichiro Fukue

Investigation of Combustion Structure Inside Low NOx Combustors for a 1500°C-Class Gas Turbine

This paper describes the cold flow tests and low pressure combustion tests which were conducted for the development of a 1500°C-class low NOx combustion system. In the cold flow tests, the effect of vane angle and the momentum ratio of fuel to air flow on mixing characteristics inside the premixing nozzles was investigated. The stabilization of the flow field inside the combustor was confirmed by measurement of the axial velocity distribution and observations by using a tuft of soft thread.Combustion characteristics in terms of emissions and stability were investigated initially by low pressure combustion tests, and the gas temperature distribution inside the combustor was measured. NOx emissions for a 1500°C-class gas turbine as low as 50ppm at 15% oxygen at design pressure were demonstrated.Copyright

Development of Gas Turbine Combustors for Low BTU Gas

Large-capacity combined cycles with high-temperature gas turbines burning petroleum fuel or LNG have already been operated in large numbers in both domestic and foreign countries and have achieved good results. On the other hand, as the power generation technology utilizing coal burning the coal gasification combined plants are also under research. Since coal-gasified gas is lower in BTU and harder to burn than conventional fuel, development of this combustor is one of the important problems to be solved. To develop the combustor burning low BTU gas in our company, we have proceeded the study for blast furnace gas, i.e. by-product gas in the ironworks and have succeeded in practical use of the multi-can type combustor burning low BTU gas in the combined plant supplied to Chiba Works, Kawasaki Steel Corporation.

Development and Testing of the 13MW Class Heavy Duty Gas Turbine MF-111

A new 13 MW class heavy duty gas turbine “MF-111” with the combustor outlet temperature of 1250°C (1523 K) was developed and tested.The thermal efficiency of MF-111 is designed to be 32% for simple-cycle and 45% in combined-cycle operation.MF-111 has single-shaft configuration, 15-stage axial flow compressor, 8 cannular type combustors and 3-stage axial flow turbine.Advanced cooling technology was incorporated for the turbine and the combustor design to be capable of higher combustor outlet temperature.The prototype was shoptested at full load in April, 1986. The performance and the metal temperatures of hot parts were confirmed to well satisfy the design goal. The first machine of MF-111 started the commercial operation from August, 1986 and has logged satisfactory operations.© 1987 ASME

Development of 6MW-Class Gas Turbine MF-61

The MF-61 is a 6MW-class heavy duty gas turbine which was developed for cogeneration application. A single can type combustor with wide fuel flexibility and advanced high efficiency compressor has been adopted for this engine. The combustor outlet temperature is designed at 1150°C. This paper describes the design concepts of the machine, the design features, and the verification programs carried out in Takasago, Japan. The results of the full load shop test verified that the performance, the mechanical characteristic and the emission well satisfied the initial design goals.Copyright