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Research Article

Numerical simulation of oil dewatering in a disc centrifuge based on PBM model

Shuangcheng Fu1, Guiwen Deng1, Hefeng Dong2, Yuhui Mou3, Yuwei Hu1, Faqi Zhou1, Huixin Yuan1( )
School of Machinery and Rail Transit, Changzhou University, Changzhou, China
Systems Engineering Research Institute, Beijing, China
Jiangsu Juneng Machinery Co., Ltd., Changzhou, China
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Abstract

Disc centrifuges have been widely applied, particularly in oil dewatering. Literatures are sparsely particularly that of test work and simulation with PBM model on this aspect. The oil dewatering performance of a disc centrifuge has been studied with both test and simulation, which was based on population balance model (PBM). The gradient of the concentration and size of water droplets has been revealed. The results show that the simulation of PBM model is more realistic; the coalescence probability of water droplets is much greater than the fragmentation probability; due to the coalescence behavior of water droplets, the oil–water separation process will be easier; and the separation efficiency will be 1%–2% higher than that of conventional Euler–Euler model. In addition, when the separation efficiency reaches the peak, the optimal disc gap is about 0.5 mm.

Keywords

disc centrifugesimulationdisc spacingoil dewateringpopulation balance model (PBM)

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Experimental and Computational Multiphase Flow
Volume 5 Issue 2,
June 2023
Pages 212-220
DOI: 10.1007/s42757-022-0137-7
Cite this article:
Fu S, Deng G, Dong H, et al. Numerical simulation of oil dewatering in a disc centrifuge based on PBM model. Experimental and Computational Multiphase Flow, 2023, 5(2): 212-220. https://doi.org/10.1007/s42757-022-0137-7

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Received: 04 December 2021
Revised: 06 March 2022
Accepted: 15 April 2022
Published: 19 July 2022
© Tsinghua University Press 2022
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