The design and on-engine testing of a lean-premixed, low-NOx combustor for a simple-cycle, single-shaft, 250-kW gas turbine engine of a pressure ratio of eight are described. A variable-geometry system composed of butterfly air valves was used to control the combustor air split between combustion and dilution. Fuel was staged to a direct-injection pilot burner, and a lean-premixed main burner was fitted to the combustor liner. The NOx emissions with natural gas fueling were found to be less than 20 ppm (at 15 percent O2) at and near full-load conditions with combustion efficiencies greater than 99.8 percent. Emissions data from early high-pressure rig tests of the combustor hardware are also presented.
Issue Section:Gas Turbines: Combustion and Fuels
Second-Generation Low-Emission Combustors for ABB Gas Turbines: Field Measurements With GT11N-EV,”
ASME JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER, Vol.
Etherdge, C. J., 1994, “Mars SoLoNOx-Lean Premix Combustion Technology in Production,” ASME Paper No. 94-GT-255.
Hayashi, S., 1982, “Research on NOx Emissions Reduction for Gas Turbine Combustors (I), Reduction by Fuel-Air Premixing,” National Aerospace Laboratory Technical Report TM-470.
Hayashi, S., 1983, “Reduction of NOx Emissions From Gas Turbine Combustors by Lean Premixed and Prevaporized Combustion,” Paper No. B-7, Proc. 11th Gas Turbine Conference, Gas Turbine Soc. Japan.
Razdan, M. K., McLeroy, J. T., and Weaver, W. E., 1994, “Retrofittable Dry Low Emissions Combustor for 501-K Industrial Gas Turbine Engines,” ASME Paper No. 94-GT-439.
Smith, K. O., Holsapple, A. C., Mak, H. K., and Watkins, L., 1991, “Development of a Natural Gas Fired, Ultra-Low NOx Can Combustor for 800 kW Gas Turbine,” ASME Paper No. 92-GT-303.
Smith, K. D., 1992, “Engine Testing of a Prototype Low NOx Gas Turbine Combustor,” ASME Paper No. 92-GT-116.
Solt, J. C., and Tuzson, J., 1993, “Status of Low NOx Combustor Development,” ASME Paper No. 93-GT-270.
This content is only available via PDF.
Copyright © 1997
by The American Society of Mechanical Engineers