E.i. Dupont De Nemours and Company

Brent Ellsworth Basham

Steven Lamar Grise

James David Allison

Richard Thomas Stimek

A process for the production of sodium cyanide crystals comprising;

Sodium cyanide process

A process for co-manufacture of acrylonitrile and hydrogen cyanide comprises combining a stream comprising hydrogen cyanide and an acrylonitrile reactor product stream, to produce a combined product stream, having a ratio of acrylonitrile to hydrogen cyanide of about 9 to 1 or less, which can be varied; and treating the combined product stream in a recovery/purification system of acrylonitrile process wherein pH is controlled by addition of an acid to prevent HCN polymerization. The ratio of acrylonitrile to hydrogen cyanide is generally between 2 to 1 and 9 to 1. The stream comprising hydrogen cyanide is advantageously a hydrogen cyanide product stream from a hydrogen cyanide synthesis reactor.

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Cordova, TN, United States of America

Brent Ellsworth Basham