Development of a dry ultra-low NO{sub x} double swirler staged gas turbine combustor

Journal Article · Thu Jan 01 04:00:00 EST 1998 · Journal of Engineering for Gas Turbines and Power

DOI:https://doi.org/10.1115/1.2818086· OSTI ID:290100

Sato, H; Mori, M; Nakamura, T ^[1]

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1. 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--
• Journal Information: Journal of Engineering for Gas Turbines and Power, Journal Name: Journal of Engineering for Gas Turbines and Power Journal Issue: 1 Vol. 120; ISSN JETPEZ; ISSN 0742-4795
• Country of Publication: United States
• Language: English

Related Subjects

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NITROGEN OXIDES