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带有中间储罐的塔用于间歇萃取精馏

崔现宝; 杨志才; 翟亚锐; 潘玉军   

  1. Distillation Laboratory of State Key Laboratories of Chemical Engineering, Tianjin
    University, Tianjin 300072,China
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2002-10-28 发布日期:2002-10-28
  • 通讯作者: 崔现宝

Batch Extractive Distillation in a Column with a Middle Vessel

CUI Xianbao; YANG Zhicai; ZHAI Yarui; PAN Yujun   

  1. Distillation Laboratory of State Key Laboratories of Chemical Engineering, Tianjin
    University, Tianjin 300072,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2002-10-28 Published:2002-10-28
  • Contact: CUI Xianbao

摘要: Batch extractive distillation was studied in a column with a middle vessel. The process was
simulatedby a constant holdup model and solved by two point implicit method. Acetone and
methanol mixture was separatedin such a setup using water as solvent. The simulation agrees
well with experimental results. The experimental andsimulation results show that the
solvent at the bottom and the product at the top of the column can be
withdrawnsimultaneously for a long period of time. It needs more time for the solvent to
reach high purity than that requiredfor the more volatile component to reach high purity,
so that the time to withdraw solvent from the bottom isdelayed.

关键词: extractive distillation;batch extractive distillation;middle vessel;simulation

Abstract: Batch extractive distillation was studied in a column with a middle vessel. The process was
simulatedby a constant holdup model and solved by two point implicit method. Acetone and
methanol mixture was separatedin such a setup using water as solvent. The simulation agrees
well with experimental results. The experimental andsimulation results show that the
solvent at the bottom and the product at the top of the column can be
withdrawnsimultaneously for a long period of time. It needs more time for the solvent to
reach high purity than that requiredfor the more volatile component to reach high purity,
so that the time to withdraw solvent from the bottom isdelayed.

Key words: extractive distillation, batch extractive distillation, middle vessel, simulation