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Discussion on the influence of internal components on the flow field distribution of a new gas–solid non-catalytic fluidized bed (NRFB)

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Abstract

This study proposed a novel fluidized bed (NRFB) accompanied by grid trays, air distributor, and other internals, which can realize the continuous production of gas–solid non-catalytic reactions. In the reactor, the reverse flow of the gas–solid phase enabled the solid particles to contact efficiently with the gas and to produce solid particles. The discrete phase model was used to simulate the characteristics of the gas–solid two-phase flow and distribution in NRFB with different types of air distributors and different amounts of grid trays. The improved equal-area torus method and the uniformity index were used to quantitatively investigate the particle’s time-average radial concentration in NRFB. The results show that the air distributor can effectively ensure the uniform distribution of gas in the discharge area in NRFB. “Core-annulus” structures occur in the dense phase section in the NRFB without grid tray. The radial distribution uniformity of particle concentration can be improved by about 17% with 9 grid trays installed in NRFB, and more particles would stay in the dense phase section, which is more suitable for reaction, which can effectively improve the reaction efficiency. The guidance for the construction of experimental equipment and fluidization operation can be provided by the results, which are of great significance for the continuous production of “gas–solid non-catalytic reactions” in fine chemical industries.

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Acknowledgements

This work was supported by a grant from The Shandong Province Taishan Scholar Engineering under Special Funding Foundations, Natural Science Foundation of Shandong Province (ZR2020MB122), and The Tackling Key Program of Science and Technology in Shandong Province (No.2019GSF109009).

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Authors and Affiliations

  1. College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao, 266061, China

    Haodong Zhang, Shujie Sun & Zhenya Duan

  2. Department of Biology, Shenzhen MSU-BIT University, Shenzhen, 518000, China

    Mengyang Xu

  3. College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, 266042, China

    Junmei Zhang

  4. College of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China

    Jingtao Wang

  5. Shandong Xinhua Pharmaceutical Company Limited, Shouguang, 262700, China

    Daoxian Li

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  1. Haodong Zhang
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Correspondence to Zhenya Duan.

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Zhang, H., Xu, M., Sun, S. et al. Discussion on the influence of internal components on the flow field distribution of a new gas–solid non-catalytic fluidized bed (NRFB). Comp. Part. Mech. (2024). https://doi.org/10.1007/s40571-024-00735-w

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  • DOI: https://doi.org/10.1007/s40571-024-00735-w

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