Device special for producing and purifying chromatographic grade acetonitrile

• Main Authors: WEI YONGGUI, GE JISAN, YAN DAYANG
• Format: Patent
• Language: Chinese; English
• Published: 02.11.2011
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY

A device special for producing and purifying chromatographic grade acetonitrile is safe in production, high in quality and capable of automatically operating. A steam outlet of a reaction kettle of a pretreatment system is connected with an acetonitrile steam inlet of a backflow rectifying tower A, an acetonitrile steam outlet of the backflow rectifying tower A is connected with an acetonitrile steam inlet of a backflow condensator A, and an acetonitrile steam outlet of the backflow condensator A is connected with a receiving tank of semifinished products and connected with the rectifying tower A through a backflow pipeline 1. The bottom of the receiving tank of the semifinished products is connected with a distilling still of a rectifying and purifying system and the reaction kettle through a backflow pipeline 2. The acetonitrile steam outlet of the distilling still of the rectifying and purifying system is connected with an acetonitrile steam inlet of a backflow rectifying tower B, an acetonitrile steam out