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发明公开
CN106554309A 一种深度脱除苯-己溶液中残余盐类杂质的方法 无效 - 撤回

一种深度脱除苯-己溶液中残余盐类杂质的方法
摘要：
本发明公开了一种深度脱除苯-己内酰胺溶液中残余盐类杂质的方法，该方法是将碱类物质添加到苯-己内酰胺混合溶液中充分混合后，采用脱盐水对苯-己内酰胺混合溶液进行洗涤，或者是将碱类物质添加到脱盐水中充分混合配制成复配脱盐水，对苯-己内酰胺混合溶液进行洗涤；该方法能使盐类化合物在水相和苯-己内酰胺有机相中的分配比增大，盐类杂质最大程度地从苯-己相中进入到水相中，实现了苯-己内酰胺混合溶液的深度除杂，使苯-己内酰胺溶液的电导下降到了21μs/cm以下，洗涤效果明显提高。
摘要（英）：

A method of deep removing of residual salt impurities from a benzene-caprolactam solution is disclosed. According to the method, an alkali compound is added into the benzene-caprolactam mixed solution and fully mixed, then the benzene-caprolactam mixed solution is washed by using desalinized water, or the alkali compound is added into the desalinized water and fully mixed to obtain compound desalinized water and the benzene-caprolactam mixed solution is washed by using the compound desalinized water. The distribution ratio of salts in a water phase and the benzene-caprolactam organic phase is increased by the method, and the salt impurities enter the water phase from the benzene-caprolactam organic phase to the utmost, thus achieving deep impurity removing of the benzene-caprolactam mixed solution, reducing conductivity of the benzene-caprolactam solution to 21 [mu]s/cm or below and obviously improving washing effects.

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