不会的，用沸点低点的能和水共沸的溶剂带水吧 可以精制

乙二醇水溶液可以通过精馏塔浓缩得纯度大于98％的乙二醇，参见如下文献：

从聚酯废水中回收乙二醇和乙醛的方法 CN200610155056.X

谢谢各位的指点，由于乙二醇的沸点比较高，而我们的油浴温度只能达到200度，所以不能进行精馏。

在纯化手册上找到了具体的纯化方法：
Ethylene glycol [107-21-1] M 62.1, b 68°/4mm, 197.9°/760mm, d 1.0986, n15 1.43312, n25 1.43056, pK25 10.6.
Very hygroscopic, and also likely to contain higher diols. Dried with CaO, CaSO4,
MgSO4 or NaOH and distd under vacuum. Further dried by reaction with sodium under nitrogen, refluxed for
several hours and distd. The distillate was then passed through a column of Linde type 4A molecular sieves and
finally distd under nitrogen, from more molecular sieves. Fractionally distd.Sample Text，

其实最实际，经济的方法就是用甲苯带水，然后减压脱掉甲苯，这样含水量可以小于千分之一的。