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U.S. Department of Energy
Office of Scientific and Technical Information

Combined cycle power plant with circulating fluidized bed heat transfer

Patent ·
OSTI ID:5317188
A combined generating plant is disclosed utilizing a fluidized bed combustor in which coal or other carbonaceous fuel is burned at substantially atmospheric pressure, an external heat transfer unit is provided through which a portion of the hot solids of the fluidized bed is circulated through tubular channels. Clean air from an air compressor is passed through the heat exchanger unit around the outside of the tubular channels, so receiving heat through them from the hot solids circulating there-through, and is expanded in a gas turbine. The flow of hot solids through the tubular channels is controlled independently of the operation of the combustor so as to accomodate varying loads on the generating units. Steam for a other uses is generated by a conventional boiler and superheater in the combustor.
Assignee:
Struthers-Wells Corp.
Patent Number(s):
US 4406128
OSTI ID:
5317188
Country of Publication:
United States
Language:
English