苯酚羟化液多级萃取分离及磷酸三丁酯配合萃取过程

Separation of phenol hydroxylation mixture by multi-stage extraction and complexation extraction by hydroxylation with tributyl phosphate

针对甲基异丁基甲酮(MIBK)和异丙醚(DIPE)两种萃取剂以及在不同剂溶比时萃取苯酚羟化液的萃取效果进行了比较;并进一步采用磷酸三丁酯(TBP)为配合剂、甲基异丁基甲酮(MIBK)为稀释剂研究了苯酚羟化液的配合萃取。结果表明:MIBK的萃取效果优于DIPE,MIBK为萃取剂时的最优剂溶比为1∶3,此时苯酚羟化液的三级错流萃取率可达99%以上。通过MIBK对羟化液的多级错流萃取过程模拟计算进一步验证了此结论。采用TBP络合萃取苯酚羟化液,实验表明,萃取率可达到99.76%。

An extraction process of the phenol hydroxylation mixture with MIBK and DIPE as extraction solvents,and at different solvent-solute ratios was studied. Moreover,complexation extraction with complexation agent tributyl phosphate (in MIBK,4-Methly-2pentenone) was also studied. The results showed that the solvent MIBK used during the multi-stage extraction experiment was more efficient than DIPE under the same conditions. The best solvent-solute ratio of 1/3 was obtained and the final yield was over 99%. The r...