GAS TURBINE COMBUSTOR FOR COAL GAS, CAPABLE OF REDUCING POWER GENERATION COST BY DECREASING COAL FUEL

摘要

PURPOSE: A gas turbine combustor for coal gas is provided to increase the availability and the reliability of IGCC(Integrated Gasification Combined Cycle) plant by stably burning coal gas by considering the combustion property of coal gas.;CONSTITUTION: A gas turbine combustor for coal gas comprises a housing(10), a pilot nozzle(20) and a swirler(30). The pilot nozzle is installed at the center of the housing. The swirler is installed at the front of the pilot nozzle. The swirler comprises first and second swirling units(40,50). A group of jetting holes(42) of the first swirling unit are arranged at the circumferencial surface with a constant distance among the holes. The second swirling unit is arranged at the front of the first swirling unit. The second swirling unit comprises a central pilot fuel jetting hole(52) and a plurality of swirl groove s(54). The swirl grooves are formed within a certain distance from the pilot fuel jetting hole.;COPYRIGHT KIPO 2010