A Dry Low NOx combustion system has been developed for a 80 MW gas turbine operating on natural gas and on distillate oil. The system, employing two-stage combustion and multimode operation, meets the New Source Performance Standards (NSPS) for NOx emissions across much of the load range for both fuels. Mid-load smoke, NOx, and carbon monoxide emissions on distillate oil require further development. This paper outlines the emissions performance of the system for Dry Low NOx applications, specifically in terms of NSPS NOx requirements. Machine data, in addition to test stand data, support the conclusions.

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