IMPROVED COMBINATION OF PREMIXING CHAMBER AND COMBUSTION CHAMBER WITH LOW EMISSION OF POLLUTANTS FOR GAS TURBINE OPERATED BY LIQUID FUEL AND/OR FUEL GAS

摘要

PURPOSE: An improved combination of a premixing chamber and a combustion chamber with low emission of pollutants for a gas turbine operated by liquid fuel and/or fuel gas is provided to work by liquid fuel and/or fuel gas, to supply a favorable flame safety, and to reduce pressure fluctuations. CONSTITUTION: In an improved combination(110) of a premixing chamber(112) and a combustion chamber(111) with low emission of pollutants for a gas turbine operated by liquid fuel and/or fuel gas, the combustion chamber is formed with an end part of a truncated conical shape and surrounded by a cavity(115) for cooling air. The cavity has a hole or a port(126) capable of being contracted according to the amount of fuel used at an inlet. The cavity carries combustion air into the premixing chamber having a circumferential burner set(134) to produce the corresponding set of an additional flame at an outlet. A gas combustion supply device(125) and a liquid fuel injection device(119) are installed in the premixing chamber and a set of liquid fuel injectors(140) are positioned on the end part.