High pressure test results of a catalytic combustor for gas turbine
- Central Research Inst. of Electric Power Industry, Yokosuka, Kanagawa (Japan)
- Kansai Electric Power Co., Inc., Amagasaki, Hyogo (Japan)
Recently, the use of gas turbine systems, such as combined cycle and cogeneration systems, has gradually increased in the world. But even when a clean fuel such as LNG (liquefied natural gas) is used, thermal NO{sub x} is generated in the high temperature gas turbine combustion process. The NO{sub x} emission from gas turbines is controlled through selective catalytic reduction processes (SCR) in the Japanese electric industry. If catalytic combustion could be applied to the combustor of the gas turbine, it is expected to lower NO{sub x} emission more economically. Under such high temperature and high pressure conditions, as in the gas turbine, however, the durability of the catalyst is still insufficient. So it prevents the realization of a high temperature catalytic combustor. To overcome this difficulty, a catalytic combustor combined with premixed combustion for a 1,300 C class gas turbine was developed. In this method, catalyst temperature is kept below 1,000 C, and a lean premixed gas is injected into the catalytic combustion gas. As a result, the load on the catalyst is reduced and it is possible to prevent the catalyst deactivation. After a preliminary atmospheric test, the design of the combustion was modified and a high pressure combustion test was conducted. As a result, it was confirmed that NO{sub x} emission was below 10 ppm (at 16 percent O{sub 2}) at a combustor outlet gas temperature of 1,300 C and that the combustion efficiency was almost 100%. This paper presents the design features and test results of the combustor.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 665320
- Journal Information:
- Journal of Engineering for Gas Turbines and Power, Vol. 120, Issue 3; Other Information: DN: Paper presented at the 41. international gas turbine and aeroengine congress and exhibition, June 10--13, 1996, Birmingham (GB); PBD: Jul 1998
- Country of Publication:
- United States
- Language:
- English
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