COMBUSTOR BURNER ARRANGEMENT Russian patent published in 2018 - IPC F23D11/12 F23R3/04 F23R3/14 

FIELD: fuel combustion methods and devices.

SUBSTANCE: invention relates to combustion equipment of a gas turbine engine and in particular a liquid fuel lance for a burner arrangement of the combustion equipment, the burner arrangement and a method of operating the combustor equipment. Fuel lance (56) for burner (30) of a gas turbine combustor has axis (79) and comprises fuel lance body (68) defining fuel flow passage (70) and liquid fuel tip attached to fuel lance body (68) and in flow communication with fuel flow passage (70), wherein liquid fuel tip (72) comprises fuel outlet (86) and an array of air passages having outlets (90) arranged about fuel outlet (86), wherein outlets (90) are arranged outside blank sector (98) of a circumference around fuel outlet (86). Blank sector is defined by an angle between and including 30° and 160° about axis (79). Burner includes the fuel lance and the igniter, wherein a main air flow passage is arranged to direct at least a part of a main air flow over fuel lance (56) and then over the igniter. Blank sector has a centre-line and the centre-line is angled between +120° and -120° from a radial line from the axis and passes through fuel lance (56). Method of operating a burner comprises the step of rotating the fuel lance between a start-up condition and a second condition.

EFFECT: invention provides the prevention of carbon deposits forming on a fuel lance of a combustor, the improved spraying the liquid fuel in a combustor leading to the improved igniting the fuel in a combustor.

17 cl, 11 dwg