Hydrodynamics and bubble behaviour in a three-phase two-stage internal loop airlift reactor

Dan Li; Kai Guo; Jingnan Li; Yiping Huang; Junchao Zhou; Hui Liu; Chunjiang Liu

doi:10.1016/j.cjche.2018.03.020

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Hydrodynamics and bubble behaviour in a three-phase two-stage internal loop airlift reactor

General reactor | Updated：2026-01-06

- Hydrodynamics and bubble behaviour in a three-phase two-stage internal loop airlift reactor
- Chinese Journal of Chemical Engineering Issue 6, Pages: 1359-1369(2018)
- Affiliations：
  
  1. School of Chemical Engineering and Technology, Tianjin University,Tianjin,China,300072
  2. 2 State Key Laboratory of Chemical Engineering, Tianjin University,Tianjin,China,300072
  3. 3 China Construction Industrial & Energy Engineering Co., Ltd.,Nanjing,China,210000
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2018.03.020
  CLC：
- Published：2018
- Accepted：
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Dan Li, Kai Guo, Jingnan Li, et al. Hydrodynamics and bubble behaviour in a three-phase two-stage internal loop airlift reactor[J]. Chinese Journal of Chemical Engineering, 2018, (6): 1359-1369.
DOI：

Dan Li, Kai Guo, Jingnan Li, et al. Hydrodynamics and bubble behaviour in a three-phase two-stage internal loop airlift reactor[J]. Chinese Journal of Chemical Engineering, 2018, (6): 1359-1369. DOI： 10.1016/j.cjche.2018.03.020.

摘要

Abstract

Local hydrodynamics of a gas-liquid-solid system

such as bubble circulation regime

gas holdup

liquid velocity and axial profile of solid concentration

are studied in a two-stage internal loop airlift reactor. Empirical correlations for gas holdup and liquid velocity are proposed to ease the reactor design and scale-up. Different bubble circulation regimes were displayed in the first (lower) and second (upper) stages. Increasing superficial gas velocity and solid loading can promote regime transition of the second stage

and the gas holdup of the second stage is higher than that of the lower stage. In addition

the effects of solid loading on bubble behaviour are experimentally investigated for each stage. It is found that bubble size in the downcomer decreases with the presence of solid particles

and bubble size distribution widens under higher superficial gas velocity and lower solid loading.

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