Compressibility induced bubble size variation in bubble column reactors: Simulations by the CFD-PBE

doi:10.1016/j.cjche.2018.04.032

Chinese Journal of Chemical Engineering ›› 2018, Vol. 26 ›› Issue (10): 2009-2013.DOI: 10.1016/j.cjche.2018.04.032

• Fluid Dynamics and Transport Phenomena • 上一篇下一篇

Compressibility induced bubble size variation in bubble column reactors: Simulations by the CFD-PBE

Dongyue Li, Zhipeng Li, Zhengming Gao

State Key Laboratory of Chemical Resource Engineering, School of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China

收稿日期:2018-01-22 修回日期:2018-03-22 出版日期:2018-10-28 发布日期:2018-11-14
通讯作者: Zhengming Gao,E-mail address:gaozm@mail.buct.edu.cn

Compressibility induced bubble size variation in bubble column reactors: Simulations by the CFD-PBE

Dongyue Li, Zhipeng Li, Zhengming Gao

State Key Laboratory of Chemical Resource Engineering, School of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China

Received:2018-01-22 Revised:2018-03-22 Online:2018-10-28 Published:2018-11-14
Contact: Zhengming Gao,E-mail address:gaozm@mail.buct.edu.cn

摘要/Abstract

摘要： Bubble column reactors can be simulated by the two fluid model (TFM) coupled with the population balance equation (PBE). For the large industrial bubble columns, the compressibility due to the pressure difference may introduce notable bubble size variation. In order to address the compressibility effect, the PBE should be reformulated and coupled with the compressible TFM. In this work, the PBE with a compressibility term was formulated from single bubble dynamics, the mean Sauter diameters predicted by the compressible TFM coupled with the PBE were compared with the analytical solutions obtained by the ideal gas law. It was proven that the mesoscale formulations presented in this work were physically consistent with the macroscale modeling. It can be used to simulate large industrial plants when the compressibility induced bubble size variation is important.

关键词: Bubble column reactors, Computational fluid dynamics, Population balance equation, Compressibility

Abstract: Bubble column reactors can be simulated by the two fluid model (TFM) coupled with the population balance equation (PBE). For the large industrial bubble columns, the compressibility due to the pressure difference may introduce notable bubble size variation. In order to address the compressibility effect, the PBE should be reformulated and coupled with the compressible TFM. In this work, the PBE with a compressibility term was formulated from single bubble dynamics, the mean Sauter diameters predicted by the compressible TFM coupled with the PBE were compared with the analytical solutions obtained by the ideal gas law. It was proven that the mesoscale formulations presented in this work were physically consistent with the macroscale modeling. It can be used to simulate large industrial plants when the compressibility induced bubble size variation is important.

Key words: Bubble column reactors, Computational fluid dynamics, Population balance equation, Compressibility

Dongyue Li, Zhipeng Li, Zhengming Gao. Compressibility induced bubble size variation in bubble column reactors: Simulations by the CFD-PBE[J]. Chinese Journal of Chemical Engineering, 2018, 26(10): 2009-2013.

Dongyue Li, Zhipeng Li, Zhengming Gao. Compressibility induced bubble size variation in bubble column reactors: Simulations by the CFD-PBE[J]. Chin.J.Chem.Eng., 2018, 26(10): 2009-2013.

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Compressibility induced bubble size variation in bubble column reactors: Simulations by the CFD-PBE

Compressibility induced bubble size variation in bubble column reactors: Simulations by the CFD-PBE

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