F - Mech Eng,Light,Heat,Weapons – 24 – J
Patent
F - Mech Eng,Light,Heat,Weapons
24
J
257/30, 60/42
F24J 3/00 (2006.01) F01K 23/10 (2006.01) F22B 37/02 (2006.01)
Patent
CA 2017989
55,160 ABSTRACT A system and method are provided for recovering heat from the exhaust gas of a gas turbine operating in a combined cycle power plant. Heat is recovered by transferring it to feedwater supplied to a heat recovery steam generator. The heat recovery steam generator generates steam for expansion in a steam turbine, thereby producing additional rotating shaft power, and injection into the combustor of the gas turbine, thereby reducing nitrogen oxides in the exhaust gas. Feedwater from the condenser is entered directly into a feedwater heater in the heat recovery steam generator, thus avoiding the use of steam for feedwater heating. Acid corrosion is avoided by regulating the heat transferred from the exhaust gas to the feedwater heater in the event high sulfur fuel is burned in the gas turbine combustor.
Bereskin & Parr
Westinghouse Electric Corporation
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