Method of maintaining a nominal working temperature of flue gase

Details Method of maintaining a nominal working temperature of flue gase Method of maintaining a nominal working temperature of flue gase

1996-05-17

1997-06-03

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

60 39182, 60 39464, 122 4D, F02C 326, F02C 618

Patent

active

056343299

ABSTRACT:
A method for maintaining a nominal working temperature of flue gases during operation of a PFBC power plant having a pressure vessel with a combustor enclosed therein for combustion of a fuel in a fluidized bed, a gas turbine for receiving flue gases formed during the combustion in the combustor, a compressor driven by the gas turbine for compression of air which is utilized as combustion air during the combustion in the combustor, and a steam turbine driven by steam generated in tube bundles in the bed, includes the steps of burning a complementary fuel in the flue gases generated during the combustion in the fluidized bed downstream of the tube bundle for increasing the flue gas temperature to a nominal level for the process and using oxygen residues in the flue gas as oxidizing agents during combustion of the complementary fuel.

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patent: 5178101 (1993-01-01), Bell
patent: 5251434 (1993-10-01), Sugita et al.
patent: 5365889 (1994-11-01), Tang

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