Influence of internal components on gas-solid flow characteristics in fluidized bed reactor for organic silicon monomer synthesis--颗粒学报PARTICUOLOGY

Guo, X., Gao, F., Xu, X., Zhao, J., Li, Y., Chen, G., & Zhang, P. (2025). Influence of internal components on gas-solid flow characteristics in fluidized bed reactor for organic silicon monomer synthesis. Particuology, 96, 294-311. https://doi.org/10.1016/j.partic.2024.11.012

Influence of internal components on gas-solid flow characteristics in fluidized bed reactor for organic silicon monomer synthesis

Xiaohan Guo^a, Fei Gao^a, Xuehui Xu^a, Jianbo Zhao^b, Yinghou Li^a, Guanghui Chen^a *, Pan Zhang^b *

a Key Laboratory of Multiphase Flow Reaction and Separation Engineering of Shandong Province, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China
b College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao, 266043, China

10.1016/j.partic.2024.11.012

Volume 96, January 2025, Pages 294-311

Received 30 September 2024, Revised 13 November 2024, Accepted 14 November 2024, Available online 4 December 2024, Version of Record 12 December 2024.

E-mail: guanghui@qust.edu.cn; pan_zh@qust.edu.cn

Highlights

• Study of vertical tubes with different structures on fluid dynamics in FBRs.

• Using two-fluid model simulation combined with particle image velocimetry.

• Comparative of flow characteristics under different fluidization conditions.

• Incorporation of Internal components improves the fluidization behaviors.

Abstract

Internal components play a crucial role in the synthesis of organic silicon monomer in gas-solid fluidized bed reactors (FBRs). Finger-tube (F-tube) and U-tube components are commonly utilized to control the temperature and ensure its homogeneity in FBRs, thereby guaranteeing a high selectivity of the target product. The main objective of this work is to better understand the influence of F-tube and U-tube on the hydrodynamics in FBRs. Computational fluid dynamics (CFD) combined with the particle image velocimetry (PIV) technique were employed to explore the flow characteristics. The numerical data were validated against the particle velocity using an image processing technique. The results revealed that the F-tube increases the bed voidage by 3.2% and reduces the pressure drop by 13.0%. While the U-tube increases the bed voidage by 2.1% and reduces the pressure drop by 11.2%. These internals improve fluidization by ensuring even particle distribution and enhancing intra-particle circulation compared to reactors without internals.

Graphical abstract

Keywords

Internal components; Gas-solid fluidized bed reactors; Fluid dynamics; Particle image velocimetry system

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