Process for the reduction of nitrogen oxides in an effluent

Details Process for the reduction of nitrogen oxides in an effluent Process for the reduction of nitrogen oxides in an effluent

1987-02-13

1988-09-13

Heller, Gregory A.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

C01B 2100

Patent

active

047708638

ABSTRACT:
A process for the reduction of nitrogen oxides from an effluent from the combustion of a carbonaceous fuel is presented. More particularly, this process comprises injecting into the effluent droplets of a mixture comprising ammonia and an enhancer selected from the group consisting of hexamethylenetetraamine, a lower carbon alcohol, sugar, furfural, furfural derivatives, a hydroxyl amino hydrocarbon, an amino acid, a protein-containing composition, mixtures of ortho-, meta-, and para-methyl phenols, guanidine, guanidine carbonate, biguanidine, guanylurea sulfate, melamine, dicyandiamide, calcium cyanamide, biuret, 1,1'-azobisformamide, methylol urea, methylol urea-urea condensation product, dimethylol urea, methyl urea, dimethyl urea, and mixtures thereof, under conditions effective to reduce the concentration of nitrogen oxides in the effluent.

REFERENCES:
patent: 3801696 (1974-04-01), Mark
patent: 3846981 (1974-11-01), Paczkowski
patent: 3900554 (1975-08-01), Lyon
patent: 4208386 (1980-06-01), Arand et al.
patent: 4325924 (1982-04-01), Arand et al.
patent: 4507269 (1985-03-01), Dean et al.
patent: 4624840 (1988-11-01), Dean et al.

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