Catalytic reduction apparatus for NO.sub.X reduction

Details Catalytic reduction apparatus for NO.sub.X reduction Catalytic reduction apparatus for NO.sub.X reduction

1996-04-19

1998-04-14

Bennett, Henry A.

Furnaces

Process

Treating fuel constituent or combustion product

423239, B01J 818, B01D 5336

Patent

active

057380244

ABSTRACT:
An apparatus and method for reducing NO.sub.x pollution in flue gas produced by a power plant uses heat exchanger elements having extended surfaces which contain a SCR catalyst, with the heat exchanger elements located in the flue gas stream. Coolant is passed through the heat exchanger elements to cool the catalyst, with a temperature control system used to maintain the catalyst at its optimum temperature such that the maximum conversion of NO.sub.x is achieved. Utilizing the present invention, temperature cycling of the catalyst is avoided, prolonging the life of the catalyst, while at the same time optimizing the efficiency of conversion regardless of variations in the flue gas flow or temperature.

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