低浓度下己内酰胺-水-硫酸铵-苯体系的液液平衡问题  

Liqllid-Liquid Equilibrium of Caprolactam-H_2O-(NH_4)_2SO_4-C_6H_6 System at Low Concentrations

作　　者：姜文选[1] 车五一[1] 王晓理 

机构地区：[1]辽宁石油化工大学石油化工分院,辽宁抚顺113001 [2]抚顺石化公司石化一厂研究所,辽宁抚顺113008

出　　处：《当代化工》2003年第4期196-197,201,共3页Contemporary Chemical Industry

摘　　要：介绍了在己内酰胺废水中萃取回收己内酰胺的过程中 ,测定了 4套己内酰胺 -水 -硫酸铵 -苯体系的液液平衡数据 (水相己内酰胺质量分数小于 13% )。实验结果表明 ,用苯从废水中萃取回收己内酰胺时 ,pH在 2～ 5 .7范围内 ,pH值升高对回收有利。同时提出了一个简单的关联式并成功地关联上述平衡数据 。This artical introduced the extraction process of recycle caprolactam from caprolactam waste water and at the same time measured 4-Liqllid-Liquid Equilibrium of Caprolactam- H 2O-(NH 4) 2SO 4-C 6H 6 system (water phase saprolactam mass fraction less than 13 %). The result shows: in the extraction process for the recovery of recycle caprolactam from waste water , C 6H 6 as extraction solvent, when the Value of pH was 2 to 5.7, with the increase of the Value of pH, the recoveryrate increased; at the same time, in the paper, a simple correlation formnla was adcpted for preceding equilibrium data and has been used for the design calculation of extraction tower.

关 键 词：液液平衡 己内酰胺 己内酰胺废水 

分 类 号：TQ028.4[化学工程]