| 摘要 |
<p>A process for purifying unreacted contaminated acrylonitrile used in the synthesis of a compound produced by reacting a reactant with an excess of acrylonitrile, the process for purifying comprising the steps of: treating contaminated acrylonitrile with a base and removing salts formed to provide a treated acrylonitrile; heating the treated acrylonitrile in a heat exchanger under vacuum to a temperature above the melting point of the treated acrylonitrile but below about 172°F to provide a heated fluid material; placing the fluid material in a distillation tower maintained under vacuum; and removing a lower boiling point purified acrylonitrile from the tower.</p> |
