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Extraction of Caprolactam from Aqueous Ammonium Sulfate Solution in Pulsed Packed Column
Using 250Y Mellapak Packings

XIE Fangyou; ZHU Mingqiao; LIU Jianqing; HE Chaohong   

  1. Department of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou 310027,
    China
  • Received:1900-01-01 Revised:1900-01-01 Online:2002-12-28 Published:2002-12-28
  • Contact: XIE Fangyou

在脉冲填料柱中萃取硫酸铵溶液中的己内酰胺

谢方友; 朱明乔; 刘建青; 何潮洪   

  1. Department of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou 310027,
    China
  • 通讯作者: 谢方友

Abstract: Liquid-liquid equilibrium (LLE) data of water-caprolactam-benzene-(NH4)2SO4 system at 303 K
were measured for extraction of caprolactam from aqueous ammonium sulfate solution. The
influence of fluid flow rate, pulsation intensity on flooding velocity and mass transfer
was studied for extraction of caprolactam from ammonium sulfate solution in a laboratory
pulsed packed column. The flooding velocities and overall apparent height of a transfer
unit were given under various operation conditions. An industrial column developed based on
above study is operated well. The scale-up effect is discussed.

Key words: pulsed packed column, ammonium sulfate, extraction, liquid-liquid equilibrium, caprolactam

摘要: Liquid-liquid equilibrium (LLE) data of water-caprolactam-benzene-(NH4)2SO4 system at 303 K
were measured for extraction of caprolactam from aqueous ammonium sulfate solution. The
influence of fluid flow rate, pulsation intensity on flooding velocity and mass transfer
was studied for extraction of caprolactam from ammonium sulfate solution in a laboratory
pulsed packed column. The flooding velocities and overall apparent height of a transfer
unit were given under various operation conditions. An industrial column developed based on
above study is operated well. The scale-up effect is discussed.

关键词: pulsed packed column;ammonium sulfate;extraction;liquid-liquid equilibrium;caprolactam