Prevention of ammonia decomposition

Details Prevention of ammonia decomposition Prevention of ammonia decomposition

1993-08-12

1995-07-11

Lewis, Michael

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

423235, C01B 2104

Patent

active

054318947

ABSTRACT:
A method for denitrating an exhaust gas is disclosed which comprises the steps of injecting ammonia from an ammonia injection device into a high-temperature exhaust gas containing nitrogen oxides in a temperature range of 480.degree. C. or more, and then bringing a mixture of ammonia and the high-temperature exhaust gas into contact with a denitration catalyst to reduce the mixture, said method being characterized in that ammonia is injected through the ammonia injection device in which at least an inner surface is subjected to an aluminizing treatment, whereby ammonia is prevented from decomposing; and an apparatus for denitrating an exhaust gas is also disclosed.

REFERENCES:
patent: 4423017 (1983-12-01), Dean
patent: 4797329 (1989-01-01), Kilbane et al.
patent: 5237939 (1993-08-01), Spokoyny et al.
Berkman, et al, Catalysis: Inorganic and Organic, 1940, p. 765. (no month).

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