Process for reducing NO emissions

Details Process for reducing NO emissions Process for reducing NO emissions

1981-10-29

1983-12-27

Heller, Gregory A.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

423237, 423239, 423351, C01B 2100, B01J 800

Patent

active

044230176

ABSTRACT:
Disclosed is an improved non-catalytic combustion process for reducing NO emissions to the atmosphere wherein a reducing gas comprising ammonia, either alone or in combination with one or more other reducing gases, is injected into a flowing combustion effluent containing NO and oxygen when at least a portion of the combustion effluent is in a reduction zone at a temperature within the range of about 700.degree. C. to about 1100.degree. C., the improvement which comprises placing a metallic material substantially at the end of the reduction zone to substantially reduce ammonia breakthrough.

REFERENCES:
patent: 3102003 (1963-08-01), Hummer
patent: 3545931 (1970-12-01), McKinley
patent: 3900554 (1975-08-01), Lyon
patent: 3970739 (1976-07-01), Shiraishi
patent: 4129651 (1978-12-01), Koike et al.
Klimisch et al., "Cat. Chem of Nitrogen Oxides", Plenum Press, N.Y., 1975, p. 125.

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