Research Progress of Gas–Solid Fluidized Dry Separation

A special issue of Separations (ISSN 2297-8739). This special issue belongs to the section "Separation Engineering".

Deadline for manuscript submissions: 30 July 2025 | Viewed by 938

Special Issue Editor


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Guest Editor
School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou, China
Interests: gas–solid fluidization hydrodynamics; dry coal separation

Special Issue Information

Dear Colleagues,

Coal plays an important role in much of the world’s energy security and energy strategy. A gas–solid beneficiation fluidized bed, belonging to a bubbling flow regime, is an indispensable area in the coal-processing field. The mentioned research mainly focus on the gas–solid fluidization hydrodynamics, coal beneficiation separation, fluidized bed industrial application, fluidized bed with additional force, such as the vibration fluidized bed and pulsed fluidized bed., etc. However, the relevant theory and technology still need to be highlighted and summarized. And the challenging issues that need special attention are suggested to enable further improvement of this process.

Therefore, it is my pleasure to invite you to contribute a research article, communication, or review for publication in this Special Issue titled “Research Progress of Gas-Solid Fluidized Dry Separation”.

Dr. Chenyang Zhou
Guest Editor

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Keywords

  • gas-solid fluidized bed
  • bubble behavior
  • gas–solid fluidization simulation
  • dry coal separation
  • two-phase theory
  • bed density stability

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Published Papers (1 paper)

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13 pages, 5275 KiB  
Article
Research on the Influence of the Scaling-up Process on the Flow Structure and Two-Phase Distribution of Gas–Solid Fluidized Beds
by Zhonglin Gao, Jie Wei, Hongyang Wang and Chenyang Zhou
Separations 2024, 11(7), 202; https://doi.org/10.3390/separations11070202 - 28 Jun 2024
Viewed by 661
Abstract
In the continuous scaling-up process of the separating system, a mechanism exists that transforms the behavior of the flow field, resulting in deviations from the original model and conclusions. The paper examined the effects of the scale up of a fluidized bed by [...] Read more.
In the continuous scaling-up process of the separating system, a mechanism exists that transforms the behavior of the flow field, resulting in deviations from the original model and conclusions. The paper examined the effects of the scale up of a fluidized bed by CFD. It was observed that increasing the diameter reduces the amplitude of axial density fluctuations. Similarly, increasing the static height increases the amplitude. Moreover, increasing the static bed height enhances the visibility of the cyclic flow structure of gas and solid phases. The flow structure in large bed diameters is disrupted. The impact of changing the bed diameter on bed density is more significant than the static height. As the bed diameter increases, the bubble disturbance decreases and the aggregation phase gradually disappears while the proportion of the emulsified phase keeps increasing. This study will guide and assist in the future application of separated fluidized beds in industry. Full article
(This article belongs to the Special Issue Research Progress of Gas–Solid Fluidized Dry Separation)
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