简要概述了聚苯硫醚生产中N-甲基吡咯烷酮回收的方法,得出溶剂萃取法适宜工业化应用.采用ASpen Plus流程模拟软件模拟六级串联逆流萃取,在假定的条件下,萃余液中N-甲基吡咯烷酮含量可降至1.2×10-8.然后采用CTL50-N小型离心萃取机进行六级串联逆流萃取实验,采用外标法测定萃余液中N-甲基吡咯烷酮含量为1.8x10-5,萃取率几乎达到100％,说明实验与模拟结果几乎一致,萃取效果良好,离心萃取机可在聚苯硫醚产业中进行工业化推广应用.%The method of recovering N-methyl pyrrolidone from polyphenylene sulfid was summarized and it was concluded that the solvent extraction was suitable for industrial application. The Aspen Plus software was used to simulate the six-stage series countercurrent extraction. Under the assumption conditions, the content of N-methyl pyrrolidone can be reduced to 1.2x 10-8. Then, the CTL50-N centrifugal extractor was used for six-stage series countercurrent extraction test. The content of N-methyl pyrrolidone in the raffinate is 1.8x10-5 and the extraction rate is almost 100％. The results show that the experiment are almost identical with the simulation, and the extraction result is well. So the centrifugal extractor can be applied in the recovery of N-methyl pyrrolidone from polyphenylene sulfid.
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