羟基乙腈的分离提浓方法研究  

Research of separation and concentration methods for glycolonitrile

作　　者：张伟 韩萌 李鑫 赫瑞元 毋楠 杨仁俊 ZHANG Wei;HAN Meng;LI Xin;HE Ruiyuan;WU Nan;YANG Renjun(Chemical Engineering Research Institute of Yangquan Coal Group Co.,Ltd.,Taiyuan 030021)

机构地区：[1]阳泉煤业(集团)有限责任公司化工研究院,山西太原030021

出　　处：《合成纤维工业》2021年第5期51-53,共3页China Synthetic Fiber Industry

基　　金：2014年度山西省煤基重点科技攻关项目(MH2014-09)。

摘　　要：采用减压蒸馏法、冷冻浓缩法、真空蒸发法对工业级的羟基乙腈进行分离提浓研究。结果表明:减压蒸馏法可将质量分数48.52%的羟基乙腈溶液分离提浓至质量分数97.02%,但羟基乙腈回收率较低为79.80%;冷冻浓缩法可将质量分数48.52%的羟基乙腈溶液1次分离提浓至68.61%,1次回收率为78.92%;真空蒸发法可将质量分数48.52%的羟基乙腈分离提浓至质量分数93.15%,回收率达99.10%,且该方法操作简单、安全,是3种方法中最理想的羟基乙腈分离提浓方法。The separation and concentration of industrial grade glycolonitrile were studied by vacuum distillation,freeze concentration and vacuum evaporation.The results showed that the glycolonitrile solution with a mass fraction of 48.52%could be separated and concentrated to 97.02%by vacuum distillation,but the recovery of glycolonitrile was relatively low,i.e.79.80%;the glycolonitrile solution with a mass fraction of 48.52%could be primarily separated and concentrated to 68.61%by freeze concentration,and the recovery of glycolonitrile was 78.92%;the glycolonitrile solution with a mass fraction of 48.52%could be separated and concentrated to 93.15%by vacuum evaporation,and the recovery of glycolonitrile was 99.10%;and vacuum evaporation was the most ideal separation and concentration method of glycolonitrile among the three methods due to its simple and safe operation.

关 键 词：羟基乙腈 聚乙交酯 分离提浓 减压蒸馏 冷冻浓缩 真空蒸发 

分 类 号：TQ226.61[化学工程—有机化工]