Continuous cyaniding method in benzyl cyanide production

• Main Authors: XIE MEIXIAN, LI YONG'AN, JIA HONG, LANG BAO'AN, YIN GUOHUA, ZHANG GAIFEI, YANG HONGMEI, SHEN YINSHAN, ZHANG YU, WANG XUESONG, ZHANG CHENLIANG, GAO YONGCHAO, YIN JUNLI
• Format: Patent
• Language: Chinese; English
• Published: 01.02.2017
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY

The invention relates to the technical field of organic chemical production, in particular to the technical field of production of benzyl cyanide, and discloses a continuous cyaniding method in benzyl cyanide production. The method comprises the following steps that raw materials benzyl chloride and a phase transfer catalyst are mixed in proportion, the mixture and a raw material sodium cyanide solution are continuously fed into a reaction tower together, the reaction tower is a plate tower, and the temperature of a tower plate is controlled, so that the cyaniding reaction in the tower is continuously carried out; reaction liquid is continuously extracted out of a tower still, the reaction liquid enters a continuous centrifugal separation device after being cooled, the products benzyl cyanide oil phase and brine phase are separated, separated brine enters a waste water treatment section, and the separated oil phase is crude benzyl cyanide. The method has the advantages of being high in production efficiency a