SCI和EI收录∣中国化工学会会刊

›› 2011, Vol. 19 ›› Issue (5): 717-725.

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A New Model for the Simulation of Distillation Column

李文彬, 刘伯潭, (K. T. YU)余国琮, 袁希钢   

  1. State Key Laboratory for Chemical Engineering (Tianjin University)and School of Chemical Engineering Technology, Tianjin University, Tianjin 300072, China
  • 收稿日期:2011-06-20 修回日期:2011-09-05 出版日期:2011-10-28 发布日期:2011-10-28
  • 通讯作者: YU Guocong,E-mail:ktyu@tju.edu.cn
  • 基金资助:
    Supported by the National Natural Science Foundation of China (20736005)

A New Model for the Simulation of Distillation Column

LI Wenbin, LIU Botan, YU Guocong, YUAN Xigang   

  1. State Key Laboratory for Chemical Engineering (Tianjin University)and School of Chemical Engineering Technology, Tianjin University, Tianjin 300072, China
  • Received:2011-06-20 Revised:2011-09-05 Online:2011-10-28 Published:2011-10-28
  • Supported by:
    Supported by the National Natural Science Foundation of China (20736005)

摘要: A new computational mass transfer model is proposed for simulating the distillation process by solving the fluctuating mass flux for ?i'c' the closure of turbulent mass transfer equation in order to obtain the concentration profile and the separation efficiency of distillation column. The feather of the proposed model is to abandon the conventional way of introducing the turbulent mass transfer diffusivity (dispersion coefficient) to the turbulent mass transfer equation. To verify the validity of the proposed model, a commercial scale packed column and a sieve tray column were simulated and compared with published experimental data. The simulated results were satisfactorily confirmed in both concentration distribution and separation efficiency.

关键词: distillation simulation, packed column, tray column, fluctuating mass flux

Abstract: A new computational mass transfer model is proposed for simulating the distillation process by solving the fluctuating mass flux for ?i'c' the closure of turbulent mass transfer equation in order to obtain the concentration profile and the separation efficiency of distillation column. The feather of the proposed model is to abandon the conventional way of introducing the turbulent mass transfer diffusivity (dispersion coefficient) to the turbulent mass transfer equation. To verify the validity of the proposed model, a commercial scale packed column and a sieve tray column were simulated and compared with published experimental data. The simulated results were satisfactorily confirmed in both concentration distribution and separation efficiency.

Key words: distillation simulation, packed column, tray column, fluctuating mass flux