Abstract

Comparative experimental data on the four-step countercurrent extraction treatment of a mixture of naphthene vacuum gas oil and residual extract with dimethyl sulfoxide and with a 90 : 10 (wt %) mixture of N-methylpyrrolidone with ethylene glycol are presented. The mixed extractant based on N-methylpyrrolidone, compared to dimethyl sulfoxide, ensures more exhaustive removal of eight carcinogenic polycyclic arenes, including benzo[a]pyrene, from aromatic softener oil at a lower extractant to feed ratio.

中文翻译：

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二甲基亚砜和N-吡咯烷酮-乙二醇混合萃取剂萃取去除芳香族软化剂油中的致癌多环芳烃

摘要

给出了四步逆流萃取处理环烷减压瓦斯油和残留萃取物与二甲亚砜的混合物以及N-甲基吡咯烷酮与乙二醇的90:10（wt％）混合物的对比实验数据。与二甲基亚砜相比，基于N-甲基吡咯烷酮的混合萃取剂可确保以较低的萃取剂与进料比从芳香族柔软剂油中更彻底地除去八种致癌多环芳烃，包括苯并[ a ] re。