Process for nitrite production

Details Process for nitrite production Process for nitrite production

1980-03-28

1981-06-30

Peters, G. O.

Chemistry of inorganic compounds

Nitrogen or compound thereof

Oxygen containing

423235, C01B 2120

Patent

active

042762766

ABSTRACT:
An improved process for nitrite production is based on controlled oxidation of nitric oxide in a mixture of nitrogen oxides and oxygen. Oxidized gas is absorbed into an aqueous solution containing a basically reacting ammonium or alkali metal compound to produce nitrite and unabsorbed exit gas. The mole ratio of nitric oxide (NO) to nitrogen dioxide (NO.sub.2) in the unabsorbed exit gas is maintained within a range between 0.8 and 1.2 by either recycling a selected fraction of oxidized gas through the oxidizer or by selectively splitting the inlet stream to the oxidizer. Increased product yield as well as reduced NO.sub.x emissions are achieved as a result.

REFERENCES:
patent: 1061630 (1913-05-01), Pauling
patent: 1070070 (1913-08-01), Rothe
patent: 3453071 (1969-07-01), Schmitt
patent: 4045540 (1977-08-01), Hertzog

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