F - Mech Eng,Light,Heat,Weapons – 02 – C
Patent
F - Mech Eng,Light,Heat,Weapons
02
C
F02C 3/14 (2006.01) F02C 3/20 (2006.01) F02C 3/36 (2006.01) F23D 23/00 (2006.01) F23R 3/28 (2006.01)
Patent
CA 2076563
56,940 ABSTRACT A topping combustor is provided for a gas turbine power plant in which the combustion air from the compressor section of the gas turbine is heated in an indirect heat exchanger disposed in a solid fuel fired furnace. The compressed air from the compressor section flows through an annular passage enclosing the combustor inner shell on its way to the furnace, thereby cooling the inner shell. A burner comprised of a fuel distributor plate assembly having a plurality of fuel nozzles mounted therein is disposed in the inner vessel. Further compressed and cooled air from the compressor section flows through the plate assembly and mixes with a conventional fuel supplied to the fuel nozzles. A plurality of holes are formed in the plate assembly which distribute the combustion air around the nozzles. The high combustion air temperature and low gas velocity downstream of the plate assembly allow stable combustion to occur at ultra- lean fuel/air ratios, thereby minimizing the formation of NOx.
Bereskin & Parr
Westinghouse Electric Corporation
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