Process for the separation of NH.sub.3 from a gaseous mixture co

Details Process for the separation of NH.sub.3 from a gaseous mixture co Process for the separation of NH.sub.3 from a gaseous mixture co

1977-04-05

1978-06-13

Vertiz, O. R.

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Nitrogen or nitrogenous component

423395, C01C 300

Patent

active

040949583

ABSTRACT:
A process for the separation of ammonia from a gaseous mixture containing ammonia and hydrogen cyanide which comprises contacting said gaseous mixture in an absorption stage with an absorbent liquor comprising an acidified ammonium nitrate solution thereby selectively absorbing ammonia from said gaseous mixture and forming a solution of diminished acidity, adding nitric acid to the ammonium nitrate-containing solution of diminished acidity to restore its acidity to its initial level and recycling said restored solution to said absorption stage.

REFERENCES:
patent: RE21217 (1939-09-01), Fauser
patent: 1700914 (1929-02-01), Toniolo
patent: 2797148 (1957-06-01), Carlson
patent: 3112177 (1963-11-01), Fujise et al.
patent: 3870782 (1975-03-01), Cook et al.

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