Method and device for gas burner

Abstract

An apparatus for use in a system having a gas fuel supply and a combustor includes a fuel actuator, a controller; and a premixer. The controller generates a command signal indicative of actuation sought from the fuel actuator. The actuator receives gas fuel from the liquid fuel supply and provides liquid fuel at a modulated rate of flow in response to the command signal. The premixer receives the fuel from the actuator, mixes the fuel with air, and provides the mixture to the combustor.

Description

technical field [0001] The present invention relates to combustors, and more particularly to methods and apparatus for combustors using premixed gaseous fuel / air mixtures. Background technique [0002] Gas turbines are well known. A typical gas turbine has an annular, axially extending flow passage for sequentially passing a working fluid through a compression zone, a combustion zone, and a turbine zone. The combustion zone mixes the working fluid, typically air, with the fuel and ignites the fuel / air mixture. [0003] Gas turbines generally burn fossil fuels. An undesirable consequence of this combustion is the formation of nitrogen oxides, generally NO x express. Nitrogen oxides are pollutants that cause health and environmental problems. Government standards establish allowable No x Emissions to air. [0004] NO in gas turbine x The rate of generation of is directly dependent on the temperature in the combustion chamber. The combustion chamber temperature depends...

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Problems solved by technology

However, Stickler does not disclose the use of such a system for burning a premixed gaseous fuel / air mixture, but instead mentions premixing as a possible option

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