Method for reducing NO.sub.x emission to the atmosphere

Details Method for reducing NO.sub.x emission to the atmosphere Method for reducing NO.sub.x emission to the atmosphere

1977-06-02

1978-09-19

Vertiz, O. R.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

423351, C01B 2100

Patent

active

041155157

ABSTRACT:
An improved method and apparatus for reducing NO.sub.x emissions to the atmosphere from stationary combustion sources. The improvement is accomplished by providing a plurality of zones and/or stages for injecting a suitable reducing gas and then injecting the reducing gas through one or more of said zones. The particular zone or zones actually used will be determined by temperature of the combustion effluent gas in the immediate vicinity thereof. Similarly, the exact composition of the reducing gas employed will be determined by the same temperature.

REFERENCES:
patent: 3846981 (1974-11-01), Paczkowski
patent: 3900554 (1975-08-01), Lyon
Perry's Chemical Engineers' Handbook, 4th ed. 1967, pp. 9-39 to 9-41 and 21-24.

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