Method of decreasing the content of nitrogen oxides in combustio

Details Method of decreasing the content of nitrogen oxides in combustio Method of decreasing the content of nitrogen oxides in combustio

1977-03-25

1979-05-15

Peters, G. O.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

B01D 5300

Patent

active

041548035

ABSTRACT:
A method of decreasing the content of nitrogen oxides in a combustion exhaust gas which comprises the steps of mixing the combustion exhaust gas with at least one material selected from the group consisting of ammonia, an ammonium salt, urea and an aqueous solution thereof, and bringing the resulting mixture into contact at a temperature of 600.degree. C. to 1,500.degree. C. with any of the baked materials obtained during the process extending from preparation of cement blending materials to production of cement clinker by baking said cement blending materials, thereby decreasing the content of, for example, nitrogen monoxide (NO) in the combustion exhaust gas.

REFERENCES:
patent: 2381696 (1945-08-01), Shapleigh
patent: 3459494 (1969-08-01), Harris
patent: 3615166 (1971-10-01), Hindin
patent: 3846981 (1974-11-01), Paczkowski
patent: 3900554 (1973-03-01), Lyon
patent: 4080218 (1978-03-01), Mori et al.
Sidgwick, N. V.; "The Chemical Elements and Their Compounds;" Clarendon Press, Oxford, 1959, p. 658.

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