Dual fuel, pressure combined cycle

Details Dual fuel, pressure combined cycle Dual fuel, pressure combined cycle

1983-08-26

1989-06-27

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

Multiple fluid-operated motors

60 39511, F02C 600

Patent

active

048417220

ABSTRACT:
In a combined cycle power plant operable on either gas or liquid fuels maximum design efficiency is achieved at the lowest HRSG stack temperatures. This can be optimized for operation on natural gas but for liquid fuel operation consideration must be given to sulfur cold end corrosion. A feedwater recirculation loop is shown which allows for selectively heating feedwater during liquid fuel operation and for non-heating during gas operation. Economizer recirculation is also introduced to prevent economizer steaming.

REFERENCES:
patent: 3194015 (1965-07-01), Pacauh
patent: 3436909 (1969-04-01), Squires
patent: 4173949 (1979-11-01), Roethe
patent: 4354347 (1982-10-01), Tomlinson et al.

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