A New Model for the Simulation of Distillation Column

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• 作者：Wenbin  ; LI ; Botan  ; LIU ; Guocong  ; YU  ; ;   ; ^{ktyu@tju.edu.cn} ; Xigang  ; YUAN
• 关键词：distillation simulation ; packed column ; tray column ; fluctuating mass flux
• 刊名：Chinese Journal of Chemical Engineering
• 出版年：2011
• 出版时间：October 2011
• 年：2011
• 卷：19
• 期：5
• 页码：717-725
• 全文大小：436 K

文摘

A new computational mass transfer model is proposed for simulating the distillation process by solving the fluctuating mass flux for 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.