Development of a dry ultra-low NO{sub x} double swirler staged gas turbine combustor
- Tokyo Gas Co. Ltd. (Japan). Energy Technology Research Inst.
This paper describes the development of an ultra-low NO{sub x} gas turbine combustor for cogeneration systems. The combustor, called a double swirler staged combustor, utilizes three-staged premixed combustion for low NO{sub x} emission. The unique feature of the combustor is its tertiary premix nozzles located downstream of the double swirler premixing nozzles around the combustor liner. Engine output is controlled by simply varying the fuel gas flow, and therefore employs no complex variable geometries for air flow control. Atmospheric combustion tests have demonstrated the superior performance of the combustor. NO{sub x} level is maintained at less than 3 ppm (O{sub 2} = 15%) over the range of engine output between 50 and 100%. Assuming the general relationship that NO{sub x} emission is proportional to the square root of operating pressure, the NO{sub x} level is estimated at less than 9 ppm (O{sub 2} = 15%) at the actual pressure of 0.91 MPa (abs.). Atmospheric tests have also shown high combustion efficiency; more than 99.9% over the range of engine output between 60 and 100%. Emissions of CO and UHC are maintained at 0 and 1 ppm (O{sub 2} = 15%), respectively, at the full engine load.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 290100
- Report Number(s):
- CONF-960608-; ISSN 0742-4795; TRN: IM9834%%177
- Journal Information:
- Journal of Engineering for Gas Turbines and Power, Vol. 120, Issue 1; Conference: 41. American Society of Mechanical Engineers (ASME) international gas turbine and aeroengine congress and exposition, Birmingham (United Kingdom), 10-13 Jun 1996; Other Information: PBD: Jan 1998
- Country of Publication:
- United States
- Language:
- English
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