Removal of cyanides from acetonitrile

Details Removal of cyanides from acetonitrile Removal of cyanides from acetonitrile

1980-05-21

1982-05-04

Sever, Frank

Distillation: processes, separatory

With chemical reaction

Including step of adding catalyst or reacting material

203 38, 203 54, 2604651, 2604653, 2604659, B01D 334

Patent

active

043280757

ABSTRACT:
The present invention relates to a process for removing cyanides from a crude acetonitrile stream. Caustic and formaldehyde are added to an aqueous acetonitrile stream that contains cyanide. The formaldehyde "kills" the cyanides and provides a waste stream that can be conveniently disposed of.

REFERENCES:
patent: 3201451 (1965-08-01), Idol et al.
patent: 3729413 (1973-04-01), Csuros et al.

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