乙二醛水溶液的纯化

Purification of Glyoxal in Aqueous Solution

乙二醛有多种生产方法,其纯化对象亦有所不同。目前采用较多的是由乙二醇气相氧化生产乙二醛,这时,其主要待去除杂质是甲醛。着重介绍采用溶剂萃取方法纯化乙二醛水溶液的过程,同时与其它纯化方法进行了对比。

The purification methods of glyoxal in aqueous solution are reviewed based on the introduction of the production technology of glyoxal. The purification method of solvent extraction which was developed by the authors is introduced. The solvent extraction method possess the advantages of low equipments investment, low power consumption, and the high pure glyoxal product is obtained. Comparing with the traditional puritication methods the superiority of technology and economics of solvent extraction method are very obvious.