Abstract
Fluidization characteristics of wide-size-distribution particles in the gas-solid fluidized bed reactor are investigated by applying experiment and computational fluid dynamics (CFD) methods. In this study, three types of narrow-cut particles and two sets of wide-size-distribution particles are used. A model considering particle size distribution is developed in the Eulerian frame, and good agreement between numerical results and experimental data is observed. The particle size distribution has an important effect on the average bed voidage. The axial particle diameter profiles along bed height have a “S” type feature. Minimum fluidization velocity is determined from the standard deviation of pressure fluctuations and bubble dynamics are analyzed based on power spectra. Results indicate that fine particle composition can reduce the minimum fluidization velocity of wide-size-distribution particle system and the bubble diameter in the fluidized bed.
Funding source: Key Research and Development Program in Shandong Province
Award Identifier / Grant number: 2019GSF109038
Funding source: National Natural Science Foundation of China
Award Identifier / Grant number: 21276132
Acknowledgments
This work is supported by the National Natural Science Foundation of China (Grant No. 21276132), the Key Research and Development Program in Shandong Province (Grant No. 2019GSF109038) and the Postdoctoral Applied Research Project of Qingdao.
Author contribution: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: This article was supported by National Natural Science Foundation of China (Grant No. 21276132) and Key Research and Development Program in Shandong Province (Grant No. 2019GSF109038).
Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
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Supplementary Material
The online version of this article offers supplementary material (https://doi.org/10.1515/ijcre-2020-0100).
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