Waste heat recovery boiler

Details Waste heat recovery boiler Waste heat recovery boiler

1979-01-17

1984-08-21

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

Multiple fluid-operated motors

60 395, 122 7R, F02C 618

Patent

active

044662416

ABSTRACT:
A waste heat recovery boiler for generating steam by utilizing a flue gas discharged from a gas turbine as a heat source comprises an economizer for preheating feedwater by the flue gas, an evaporator for evaporating the preheated feedwater, and a superheater for generating a steam for driving a steam prime mover by heating the evaporated feedwater. The economizer, the evaporator and the superheater are successively arranged in the direction from a downstream side to an upstream side of flue gas passage. The evaporator itself is divided into two sections and an apparatus for removing NO.sub.x is provided in a space between the divided two sections of the evaporator in the flue gas passage to remove NO.sub.x from the flue gas. An NO.sub.x concentration of a flue gas discharged from a combined cycle power plant including the gas turbine can be stably abated at any of full and partial loads.

REFERENCES:
patent: 4106286 (1978-08-01), Sakai et al.
patent: 4160805 (1979-07-01), Inaba et al.
patent: 4164546 (1979-08-01), Welty

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