Heavy duty gas turbines for power generation and mechanical drive applications are typically fired on natural gas as a primary fuel, providing heat and power with high efficiency and low exhaust emissions. However, fuel gas is not always available when power is needed, and distillate oil is often employed as an easily stored and handled back-up fuel. The present paper describes the development and initial component validation testing of a new, simplified liquid fuel injection system that will provide a back-up liquid fuel option for dry, low NOx combustion systems used in heavy duty industrial gas turbines. This new liquid fuel system offers reduced initial cost and operating cost, lower NOx emissions, and reduced water consumption relative to current technology. Spray test, sub-component ignition test, and full-scale combustion chamber test results will be discussed.

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