Gas and steam turbine system

Details Gas and steam turbine system Gas and steam turbine system

1993-11-16

1994-11-29

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

Multiple fluid-operated motors

60 39464, F02C 326, F02C 618

Patent

active

053678702

ABSTRACT:
A gas and steam turbine system includes a coal mill. A steam turbine has a water-steam loop. A gas turbine has an exhaust gas side supplying exhaust gas. A first heat exchanger is connected to the exhaust gas side of the gas turbine. A steam generator is connected downstream of the exhaust gas side of the gas turbine and upstream of the steam turbine in the water-steam loop for generating steam for the steam turbine. The steam generator has a furnace system connected downstream of the coal mill for supplying flue gas flowing through the steam generator. A second heat exchanger is connected to the coal mill. A first adjustable fractional quantity of the exhaust gas from the gas turbine after being cooled in the first heat exchanger, is delivered to the furnace system as combustion air. A second adjustable fractional quantity of the cooled exhaust gas is delivered to the second heat exchanger for heating air for the coal mill. A third adjustable fractional quantity of the cooled exhaust gas is admixed with the flue gas from the furnace system.

REFERENCES:
patent: 2055385 (1936-09-01), Noack
patent: 2663146 (1953-12-01), Legendre
patent: 3095699 (1963-07-01), Baver
patent: 3314231 (1967-04-01), Hochmuth
patent: 4976101 (1990-12-01), Schiffers

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