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错流萃取分离1,1,2-三氯乙烷――DMF体系的实验研究

Keywords: 1,1,2-三氯乙烷,DMF,错流液液萃取

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Abstract:

在常温、常压下采用错流液液萃取装置,研究了以水为萃取剂,多级错流萃取分离1,1,2-三氯乙烷―DMF体系的工艺条件,综合考察了溶剂比和萃取级数对错流萃取结果的影响,结果表明在溶剂比SF=11的比例下,采用四级萃取可使萃余相中1,1,2-三氯乙烷的含量达到99.5%以上,且DMF的回收率同时达到99.5%以上.

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