Waste heat recovery system

Details Waste heat recovery system Waste heat recovery system

1988-05-23

1989-10-24

Favors, Edward G.

Liquid heaters and vaporizers

Industrial

Waste heat

60 39182, 122468, 122470, 422180, F22D 100

Patent

active

048754366

ABSTRACT:
There is provided a waste heat recovery system characterized by a boiler assembly including a heat recovery steam generator through which exhaust gas is flowed. The boiler assembly includes a high temperature steam tube heat exchanger, or superheater, and at a location downstream therefrom a water tube boiler. An ammonia gas injector is utilized for injecting ammonia into the exhaust gas stream which injector is located upstream of the superheater and water tube boiler. Finally, there is provided a low temperature selective catalytic reduction unit located downstream of the low temperature water tube boiler or evaporator. This arrangement simplifies retrofitting of existing heat recovery systems.

REFERENCES:
patent: 2020686 (1935-11-01), Kaiser
patent: 3380810 (1968-04-01), Hamblin
patent: 3992876 (1976-11-01), Aguet
patent: 4106286 (1978-08-01), Inui et al.
patent: 4160805 (1979-07-01), Inaba et al.
patent: 4164546 (1979-08-01), Welty
patent: 4466241 (1984-08-01), Inui et al.
patent: 4572110 (1986-02-01), Haeflich
patent: 4693213 (1987-09-01), Yanai et al.
patent: 4706612 (1987-11-01), Moreno et al.
patent: 4711009 (1987-08-01), Cornelison

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