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Premix burner for a gas turbines - combustion chamber with low pollutant emission
Premix burner for a gas turbines - combustion chamber with low pollutant emission
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机译:燃气轮机预混燃烧器-污染物排放低的燃烧室
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摘要
A low emissions combustor includes a premixer for premixing liquid fuel and compressed air for achieving low NOx emissions without water or steam injection. The premixer includes a centerbody disposed in a shroud defining an annular flow channel extending between an inlet and outlet of the shroud. A plurality of fuel injection orifices are spaced circumferentially around the centerbody with each having an outlet being substantially flush with an outer surface of the centerbody. The fuel injection orifices inject liquid fuel into the flow channel wherein it is atomized by compressed air channeled through the shroud inlet. In a preferred embodiment, the fuel injection orifices are inclined at an acute angle for injection the fuel toward the shroud inlet to increase differential mixing velocity with the compressed air.
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