Power plants – Combustion products used as motive fluid – Multiple fluid-operated motors
Patent
1979-08-03
1980-09-23
Gill, James J.
Power plants
Combustion products used as motive fluid
Multiple fluid-operated motors
60655, 122 4D, F01K 2306, F01K 2308
Patent
active
042235294
ABSTRACT:
An improved combined cycle gas turbine and steam turbine power plant is disclosed in which the energy source for both the steam turbine portion of the system and the gas turbine portion is a pressurized fluidized bed combustor fueled by a carbonaceous fuel such as coal. Combustion gas discharged from the pressurized combustor is processed for minimal cleanup and temperature conditioning prior to passage through a heat exchanger to heat a stream of pressurized air for driving an air-gas turbine. Following the loss of sensible heat energy through the heat exchanger, the lower temperature combustion gas is expanded through a second, combustion gas turbine so that a portion of the remaining energy is extracted at a lower temperature, avoiding problems of hot gas corrosion and fouling within the turbine. A compressor, driven by one or both gas turbines, provides both the pressurized air supply for fluidization of the bed and the stream of air to the air-gas turbine. The fluidized bed contains fuel and sulfur-sorbing particles, the latter capturing and retaining sulfur oxide compounds to prevent emission thereof to the atmosphere. Heat exchangers located within the fluidized bed combustor serve as steam generating means for the steam turbine portion of the power plant.
REFERENCES:
patent: 2471755 (1949-05-01), Karrer
patent: 3127744 (1964-04-01), Nettel
patent: 3687115 (1972-08-01), Bell
patent: 3791137 (1974-02-01), Jubb et al.
patent: 3863606 (1975-02-01), Bryers et al.
patent: 3871172 (1975-03-01), Villiers-Fisher et al.
patent: 4116005 (1978-09-01), Willyoung
NASA-CR 134949, p. 14.
Electric World, Dec. 15, 1976, pp. 39-41.
Ahern John F.
Austin Ormand R.
General Electric Company
Gill James J.
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