Manufacture of nitrates

Details Manufacture of nitrates Manufacture of nitrates

1972-03-06

1977-02-22

Peters, G. O.

Chemistry of inorganic compounds

Nitrogen or compound thereof

Oxygen containing

C01B 2150

Patent

active

040092461

ABSTRACT:
Nitrites having minimum amounts of the corresponding nitrates are produced by rapidly quenching a gaseous mixture of nitrogen oxides to a temperature less than 120.degree. C. by dispersing the gas into intimate contact with and under the surface of an aqueous solution of a base, for example sodium hydroxide, which solution is maintained at a temperature in the range 30.degree.-120.degree. C., and thereafter continuing absorption of the gas into the base until at least 90% of the nitrogen oxides originally present are removed from the gaseous mixture. The gaseous mixture is maintained above its dew point until the aforesaid dispersion is effected, and a coating of the aqueous solution, preferably in the form of a foam, is maintained on the cold walls to minimize condensation of water and consequent nitrate formation.

REFERENCES:
patent: 871640 (1907-11-01), Schonherr et al.
patent: 1978431 (1934-10-01), Kirst et al.
patent: 2797144 (1957-06-01), Joris
patent: 2805122 (1957-09-01), Bostian et al.
patent: 2805213 (1957-09-01), Bostian
patent: 3428424 (1969-02-01), Keith

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