Bubble size fractal dimension, gas holdup, and mass transfer in a bubble column with dual internals

Xiao Xu; Junjie Wang; Qiang Yang; Lei Wang; Hao Lu; Honglai Liu; Hualin Wang

doi:10.1016/j.cjche.2020.07.030

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Bubble size fractal dimension, gas holdup, and mass transfer in a bubble column with dual internals

Fluid Dynamics and Transport Phenomena | Updated：2026-01-06

- Bubble size fractal dimension, gas holdup, and mass transfer in a bubble column with dual internals
- Chinese Journal of Chemical Engineering Vol. 28, Issue 12, Pages: 2968-2976(2020)
- Affiliations：
  
  1. School of Mechanical and Power Engineering, East China University of Science and Technology,Shanghai,China,200237
  2. National Engineering Laboratory for Industrial Wastewater Treatment, East China University of Science and Technology,Shanghai,China,200237
  3. State Key Laboratory of Chemical Engineering, East China University of Science and Technology,Shanghai,China,200237
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2020.07.030
  CLC：
- Published：2020
- Accepted：
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Xiao Xu, Junjie Wang, Qiang Yang, Lei Wang, Hao Lu, Honglai Liu, Hualin Wang. Bubble size fractal dimension, gas holdup, and mass transfer in a bubble column with dual internals[J]. Chinese Journal of Chemical Engineering, 2020, 28(12): 2968-2976.
DOI：

Xiao Xu, Junjie Wang, Qiang Yang, Lei Wang, Hao Lu, Honglai Liu, Hualin Wang. Bubble size fractal dimension, gas holdup, and mass transfer in a bubble column with dual internals[J]. Chinese Journal of Chemical Engineering, 2020, 28(12): 2968-2976. DOI： 10.1016/j.cjche.2020.07.030.

摘要

Abstract

As the scale of residual oil treatment increases and cleaner production improves in China

slurry bubble column reactors face many challenges and opportunities for residual oil hydrogenation technology. The internals development is critical to adapt the long-term stable operation. In this paper

the volumetric mass transfer coefficient

gas holdup and bubble size in a gas-liquid up-flow column are studied with two kinds of internals. The gas holdup and volumetric mass transfer coefficient increase by 120% and 42% when the fractal dimension of bubbles increases from 0.56 to 2.56

respectively. The enhanced mass transfer processing may improve the coke suppression ability in the slurry reactor for residual oil treatment. The results can be useful for the exploration of reacting conditions

scale-up strategies

and oil adaptability. This work is valuable for the design of reactor systems and technological processes.

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