CFD simulation of solids residence time distribution in a multi-compartment fluidized bed

Zheng Zou; Yunlong Zhao; Hu Zhao; Libo Zhang; Zhaohui Xie; Hongzhong Li; Qingshan Zhu

doi:10.1016/j.cjche.2017.02.010

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CFD simulation of solids residence time distribution in a multi-compartment fluidized bed

第25届中国过程控制会议专栏 | Updated：2026-01-06

- CFD simulation of solids residence time distribution in a multi-compartment fluidized bed
- Chinese Journal of Chemical Engineering Vol. 25, Issue 12, Pages: 1706-1713(2017)
- Affiliations：
  
  University of Chinese Academy of Sciences,Beijing,China,100049
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2017.02.010
  CLC：
- Published：2017
- Accepted：
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Zheng Zou, Yunlong Zhao, Hu Zhao, Libo Zhang, Zhaohui Xie, Hongzhong Li, Qingshan Zhu. CFD simulation of solids residence time distribution in a multi-compartment fluidized bed[J]. Chin.J.Chem.Eng., 2017, 25(12): 1706-1713.
DOI：

Zheng Zou, Yunlong Zhao, Hu Zhao, Libo Zhang, Zhaohui Xie, Hongzhong Li, Qingshan Zhu. CFD simulation of solids residence time distribution in a multi-compartment fluidized bed[J]. Chin.J.Chem.Eng., 2017, 25(12): 1706-1713. DOI： 10.1016/j.cjche.2017.02.010.

摘要

Abstract

The present work focuses on a numerical investigation of the solids residence time distribution (RTD) and the fluidized structure of a multi-compartment fluidized bed

in which the flow pattern is proved to be close to plug flow by using computational fluid dynamics (CFD) simulations. With the fluidizing gas velocity or the bed outlet height rising

the solids flow out of bed more quickly with a wider spread of residence time and a larger RTD variance (σ

). It is just the heterogeneous fluidized structure that beingmore prominentwith the bed height increasing induces the widely non-uniform RTD. The division of the individual internal circulation into double ones improves the flow pattern to be close to plug flow.

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