Process for the manufacture of nitric oxide

Details Process for the manufacture of nitric oxide Process for the manufacture of nitric oxide

1995-09-26

1997-09-23

Langel, Wayne

Chemistry of inorganic compounds

Nitrogen or compound thereof

Oxygen containing

423400, 423523, C01B 2124

Patent

active

056701276

ABSTRACT:
Nitric oxide is produced by reacting aqueous nitric acid with gaseous sulfur dioxide in a gas-liquid contact reactor. The reaction is conducted in the presence of a stoichiometric excess of nitric acid to minimize the production of byproduct nitrous oxide and nitrogen. The nitric oxide product gas is chilled sufficiently to freeze most of the water and byproduct nitrogen dioxide contained in the nitric oxide product gas. Residual nitrogen dioxide can be removed by adsorptive separation using an adsorbent which preferentially adsorbs nitrogen dioxide.

REFERENCES:
patent: 3446587 (1969-05-01), Jockers

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