Numerical study of n-heptane/benzene separation by thermal diffusion column

doi:10.1016/j.cjche.2018.10.004

中国化学工程学报 ›› 2019, Vol. 27 ›› Issue (8): 1745-1755.DOI: 10.1016/j.cjche.2018.10.004

• Fluid Dynamics and Transport Phenomena • 下一篇

Numerical study of n-heptane/benzene separation by thermal diffusion column

Neda Hashemipour¹, Javad Karimi-Sabet², Kazem Motahari¹, Saeed Mahruz Monfared³, Younes Amini⁴, Mohammad Ali Moosavian⁵

1 Department of Chemical Engineering, Faculty of Engineering, Arak University, Arak, Iran;
2 Material and Nuclear Fuel Research School(MNFRS), Nuclear Science and Technology Research Institute, Tehran, Iran;
3 Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran;
4 Department of Chemical Engineering, Isfahan University of Technology, Isfahan, Iran;
5 School of Chemical Engineering, Faculty of Engineering, University of Tehran, Tehran, Iran

收稿日期:2018-07-20 修回日期:2018-09-03 出版日期:2019-08-28 发布日期:2019-11-16
通讯作者: Javad Karimi-Sabet

Numerical study of n-heptane/benzene separation by thermal diffusion column

Neda Hashemipour¹, Javad Karimi-Sabet², Kazem Motahari¹, Saeed Mahruz Monfared³, Younes Amini⁴, Mohammad Ali Moosavian⁵

1 Department of Chemical Engineering, Faculty of Engineering, Arak University, Arak, Iran;
2 Material and Nuclear Fuel Research School(MNFRS), Nuclear Science and Technology Research Institute, Tehran, Iran;
3 Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran;
4 Department of Chemical Engineering, Isfahan University of Technology, Isfahan, Iran;
5 School of Chemical Engineering, Faculty of Engineering, University of Tehran, Tehran, Iran

Received:2018-07-20 Revised:2018-09-03 Online:2019-08-28 Published:2019-11-16
Contact: Javad Karimi-Sabet

摘要/Abstract

摘要： In this article, numerical simulations are performed to investigate the performance of the thermal diffusion column for the separation of n-heptane/benzene mixture. The present work tried to optimize column by analyzing significant parameters such as feed flow rate, temperature and cut. In order to obtain the hydrodynamic and temperature and mass distribution inside thermal diffusion column, computational fluid dynamic (CFD) method is applied to solve the Navier-Stocks equations. Numerical simulations are conducted to study the main parameters in both stationary and time-dependent conditions. By using the separation work unit as a function of cut, the optimal cut for maximum SWU occurs within a limited range of 0.47-0.5 for feed rate between 0.5 and 4·g min^-1. Our findings reveal that the optimum feed rate in the range of optimum cut is about 1 g min^-1. In transient study, results show that the best cut for reaching to steady-state condition is θ=0.5.

关键词: Thermal diffusion column (TDC), Computational fluid dynamic, Separative work unit, n-Heptane/benzene separation

Abstract: In this article, numerical simulations are performed to investigate the performance of the thermal diffusion column for the separation of n-heptane/benzene mixture. The present work tried to optimize column by analyzing significant parameters such as feed flow rate, temperature and cut. In order to obtain the hydrodynamic and temperature and mass distribution inside thermal diffusion column, computational fluid dynamic (CFD) method is applied to solve the Navier-Stocks equations. Numerical simulations are conducted to study the main parameters in both stationary and time-dependent conditions. By using the separation work unit as a function of cut, the optimal cut for maximum SWU occurs within a limited range of 0.47-0.5 for feed rate between 0.5 and 4·g min^-1. Our findings reveal that the optimum feed rate in the range of optimum cut is about 1 g min^-1. In transient study, results show that the best cut for reaching to steady-state condition is θ=0.5.

Key words: Thermal diffusion column (TDC), Computational fluid dynamic, Separative work unit, n-Heptane/benzene separation

Neda Hashemipour, Javad Karimi-Sabet, Kazem Motahari, Saeed Mahruz Monfared, Younes Amini, Mohammad Ali Moosavian. Numerical study of n-heptane/benzene separation by thermal diffusion column[J]. 中国化学工程学报, 2019, 27(8): 1745-1755.

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Numerical study of n-heptane/benzene separation by thermal diffusion column

Numerical study of n-heptane/benzene separation by thermal diffusion column

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