Non-catalytic method for reducing the concentration of NO in com

Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Nitrogen or nitrogenous component

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423239, C01B 2100, B01J 800

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active

046363700

ABSTRACT:
Disclosed is a method for non-catalytically reducing the concentration of NO in combustion effluents by the injection of ammonia into an effluent stream where the stream is at a temperature from about 975.degree. K. to 1300.degree. K. More particularly, the amount of NH.sub.3 and its point of injection are determined by the solution of a set of simultaneous equations derived from the kinetic model disclosed herein. Particular benefits of the present invention occur when ammonia is injected into a cooling zone.

REFERENCES:
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patent: 4129651 (1978-12-01), Koike et al.
patent: 4507269 (1985-03-01), Dean et al.
S. Salimian et al., A Kinetic Study of NO Removal from Combustion Gases by Injection of HN.sub.1 -Containing Compounds, Combustion Science and Technology, vol. 23, pp. 225-230 (1980).
James A. Miller et al., A Chemical Kinetic Model for the Selective Reduction of Nitric Oxide by Ammonia, Combustion and Flame 43:81-98 (1981).
Joel A. Silver, A Chemical Model for the Reduction of Nitric Oxide by Ammonia in Post Combustion Flows, Journal of Physical Chemistry.

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