Treatment of cyanide byproduct in nitrile production

Details Treatment of cyanide byproduct in nitrile production Treatment of cyanide byproduct in nitrile production

1978-01-06

1979-04-10

Peters, G. O.

Chemistry of inorganic compounds

Nitrogen or compound thereof

Ammonia or ammonium hydroxide

423236, 2604653, 2604659, C07C12014

Patent

active

041488652

ABSTRACT:
Hydrogen cyanide, carbon dioxide and ammonia present in a nitrile production effluent are recovered as an aqueous solution containing ammonium carbonate and ammonium cyanide. The cyanide is hydrolyzed to ammonia and carbon monoxide, followed by recovery of carbon monoxide, carbon dioxide and ammonia, all free of cyanide, from the hydrolyzed solution. In this manner, ammonium values are recovered from the cyanide byproduct and recovered streams are free of cyanide.

REFERENCES:
patent: 2459464 (1949-01-01), Smith
patent: 3386804 (1968-06-01), Neugebauer et al.
patent: 3878289 (1975-04-01), Beavon
patent: 4065486 (1977-12-01), Thorpe et al.

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