Power plants – Combustion products used as motive fluid
Patent
1983-06-03
1985-07-16
Casaregola, Louis J.
Power plants
Combustion products used as motive fluid
60 3952, F02C 600
Patent
active
045288119
ABSTRACT:
A closed-cycle gas turbine chemical processor separates the functions of combustion air and dilution fluid in a gas turbine combustor. The output of the turbine stage of the gas turbine is cooled and recirculated to its compressor from where a proportion is fed to a dilution portion of its combustor and the remainder is fed to a chemical recovery system wherein at least carbon dioxide is recovered therefrom. Fuel and combustion air are fed to a combustion portion of the gas turbine combustor. In a preferred embodiment of the invention, the gas turbine is employed to drive an electric generator. A heat recovery steam generator and a steam turbine may be provided to recover additional energy from the gas turbine exhaust. The steam turbine may be employed to also drive the electric generator. Additional heat may be added to the heat recovery steam generator for enhancing the electricity generated using heat recovery combustors in which the functions of combustion and dilution are separated. The chemical recovery system may employ process steam tapped from an intermediate stage of the steam turbine for stripping carbon dioxide from an absorbent liquid medium which is used to separate it from the gas stream fed to it. As the amount of carbon dioxide in the fuel fed to the chemical processor increases, the amount of process steam required to separate it from the absorbent fluid medium increases and the contribution to generated electricity by the steam turbine correspondingly decreases.
REFERENCES:
patent: 2646633 (1953-07-01), Sedille
patent: 2756215 (1956-07-01), Burgess et al.
patent: 3844115 (1974-10-01), Lockwood
patent: 3949548 (1976-04-01), Lockwood
Casaregola Louis J.
General Electric Co.
Squillaro J. C.
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