Optimal design of gas distributor in fluidized bed for synthesis of silicone monomer--颗粒学报PARTICUOLOGY

Du, S., Lv, G., Ma, W., Gu, G., & Fu, B. (2023). Optimal design of gas distributor in fluidized bed for synthesis of silicone monomer. Particuology, 83, 115-128. https://doi.org/10.1016/j.partic.2023.02.015

Optimal design of gas distributor in fluidized bed for synthesis of silicone monomer

Shanlin Du ^{a b}, Guoqiang Lv ^{a b *}, Wenhui Ma ^{a b}, Guangkai Gu ^{a b}, Boqiang Fu ^{a b}

a Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, China
b State Key Laboratory of Complex Nonferrous Metal Resources Cleaning Utilization in Yunnan Province, Kunming, 650093, China

10.1016/j.partic.2023.02.015

Volume 83, December 2023, Pages 115-128

Received 23 August 2022, Revised 31 December 2022, Accepted 16 February 2023, Available online 8 March 2023, Version of Record 15 March 2023.

E-mail: Ivguoqiang_ok@aliyun.com

Highlights

• Design formula for optimizing gas distributor.

• Indicators for evaluating the performance of gas distributors.

• Satisfactory performance improvement of the gas distributor after optimization.

• Study the influence of the arrangement of vent holes on gas-solid flow.

Abstract

The structure of the gas distributor is closely related to the production efficiency of organosilicon monomers. To improve the production efficiency of organosilicon monomers, this study uses Eulerian-Eulerian two fluid model and proposes a design formula for the gas distributor to optimize the gas distributor. It is proposed that the pressure drop of the gas distributor, the velocity nonuniformity coefficient, the relative standard deviation of the solid holdup, and the solid particle dispersion coefficient are used to evaluate the performance of the gas distributor. The results show that the performance of the gas distributor is significantly improved when the opening ratio Φ = 0.53% is optimized to Φ = 0.18%, in which the relative standard deviation of the solid holdup is reduced by 22%, and the solid particle dispersion coefficient is reduced by 40%. On this basis, this article studies the influence of different arrangements of vent holes on gas-solid fluidization characteristics. The results show that the circular arrangement of vent holes is helpful to the mixing of gas and solid.

Graphical abstract

Keywords

Fluidized bed reactor; Gas distributor; Opening ratio; Arrangement

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