Method and apparatus for injecting reactant for catalytic reduct

Details Method and apparatus for injecting reactant for catalytic reduct Method and apparatus for injecting reactant for catalytic reduct

1994-11-10

1996-09-17

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

60 39182, F02C 618

Patent

active

055557180

ABSTRACT:
A combined cycle system has a gas turbine connected to a heat recovery steam generator and the heat recovery steam generator contains a selective catalytic reactor section wherein nitrogen oxides (NO.sub.x) are reacted with reactant gas such as ammonia or urea to produce molecular nitrogen and water vapor. The expanding transition section contains an array of flow profile control pipes extending across the section in a pattern which distribute the flue gas uniformly over the large cross-section of the heat transfer section. The reactant gas is injected into the flue gas stream through a series of nozzles spaced across the flow control pipes so as to uniformly mix and distribute the reactant gas in the flue gas stream before it enters the selective catalytic reactor section.

REFERENCES:
patent: 4160805 (1979-07-01), Inaba et al.
patent: 4875436 (1989-10-01), Smith et al.
"Combustion Fossil Power, A Reference Book on Fuel Burning and Steam Generation" Editor--Joseph G. Singer, P. E., 4th Edition, 1991, pp. 1-16 to 1-18; 8-30 to 8-34; and 15-64 to 15-66.

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