Numerical Simulation of Liquid-Solid Countercurrent Fluidization inside an Extraction Column Based on Particle Trajectory Model

doi:10.1016/j.cjche.2014.09.019

›› 2014, Vol. 22 ›› Issue (11/12): 1179-1186.DOI: 10.1016/j.cjche.2014.09.019

• 流体力学与传递现象 • 下一篇

Numerical Simulation of Liquid-Solid Countercurrent Fluidization inside an Extraction Column Based on Particle Trajectory Model

Zhongyuan Li¹, Xingang Li^1,2, Hong Sui^1,2, Hong Li^1,2

1 School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;
2 Collaborative Innovation Center of Chemical Science, Engineering National Engineering Research Centre for Distillation Technology, Tianjin 300072, China

收稿日期:2013-12-23 修回日期:2014-03-20 出版日期:2014-12-28 发布日期:2014-12-24
通讯作者: Zhongyuan Li
基金资助:
Supported by the National Natural Science Foundation of China (21306129 and 41201497), and the Natural Science Foundation of Tianjin (12JCQNJC05300 and 11JCYBJC05400).

Numerical Simulation of Liquid-Solid Countercurrent Fluidization inside an Extraction Column Based on Particle Trajectory Model

Zhongyuan Li¹, Xingang Li^1,2, Hong Sui^1,2, Hong Li^1,2

1 School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;
2 Collaborative Innovation Center of Chemical Science, Engineering National Engineering Research Centre for Distillation Technology, Tianjin 300072, China

Received:2013-12-23 Revised:2014-03-20 Online:2014-12-28 Published:2014-12-24
Supported by:
Supported by the National Natural Science Foundation of China (21306129 and 41201497), and the Natural Science Foundation of Tianjin (12JCQNJC05300 and 11JCYBJC05400).

摘要/Abstract

摘要： The liquid-solid countercurrent fluidization process in an extraction columnwas numerically simulated based on the particle trajectorymodel of Eulerian-Lagrangianmethod. The simulation approach was validated by previous experiments. A power function correlationwas proposed for dimensionless slip velocity U_slip/U_t and hold-up fraction ϕ, and the operational zone in the countercurrent fluidizationwas determined. Simultaneous countercurrent fluidization of particles with different diameters was also simulated. The comparison shows that the simulation results are consistentwith the calculation values fromthemulti-particle free sedimentation model based on noninterference assumption, verifying the reliability of the approach in present work.

关键词: Liquid-solid countercurrent extraction, Fluidization, Numerical simulation, Particle trajectory model

Abstract: The liquid-solid countercurrent fluidization process in an extraction columnwas numerically simulated based on the particle trajectorymodel of Eulerian-Lagrangianmethod. The simulation approach was validated by previous experiments. A power function correlationwas proposed for dimensionless slip velocity U_slip/U_t and hold-up fraction ϕ, and the operational zone in the countercurrent fluidizationwas determined. Simultaneous countercurrent fluidization of particles with different diameters was also simulated. The comparison shows that the simulation results are consistentwith the calculation values fromthemulti-particle free sedimentation model based on noninterference assumption, verifying the reliability of the approach in present work.

Key words: Liquid-solid countercurrent extraction, Fluidization, Numerical simulation, Particle trajectory model

Zhongyuan Li, Xingang Li, Hong Sui, Hong Li. Numerical Simulation of Liquid-Solid Countercurrent Fluidization inside an Extraction Column Based on Particle Trajectory Model[J]. , 2014, 22(11/12): 1179-1186.

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Numerical Simulation of Liquid-Solid Countercurrent Fluidization inside an Extraction Column Based on Particle Trajectory Model

Numerical Simulation of Liquid-Solid Countercurrent Fluidization inside an Extraction Column Based on Particle Trajectory Model

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