1,4-丁二醇的精馏

RECTIFICATION OF 1,4-BUTANEDIOL

对 PBT 树脂生产中的副产物1,4-丁二醇的精馏回收进行了工艺试验,并论述了在 PBT 树脂生产中副产物1,4-丁二醇精馏的工艺计算及生产控制,着重从理论上对精馏中的塔顶温度、塔釜温度、回流比、物料衡算等作了研讨说明。将试验回收产品用于 PBT 工业生产后证明,精馏回收后的1,4-丁二醇对生产 PBT 树脂的内在质量不产生任何影响。

A test for the process of the rectification of the by-product 1,4-butanediol in theproduction of PBT resin was performed.The technological calculation and productioncontrol of the rectification of 1,4-butanediol have been described with emphasis onthe study of the temperatures of rectifying tower top and caldron,rate of round-flowand material balanced calculation etc.Taking the recovered product 1,4-butanediolinto the industrial production of PBT,it proves that there is no effect on theinherent quality of PBT resin.