Numerical simulation of flow and mass transfer characteristics in porous plate bubbling column reactor

被引：0
|
作者：
Wang J. [1 ,2 ]
Li X. [1 ,2 ]
Shao W. [1 ,2 ]
Ding X. [1 ,2 ]
Huo Y. [3 ]
Fu L. [3 ]
Bai Y. [1 ,2 ]
Li D. [1 ,2 ]
机构：
[1] State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing
[2] Beijing Key Laboratory of Process Fluid Filtration and Separation, China University of Petroleum, Beijing
[3] CNOOC Tianjin Chemical Research and Design Institute Co., Ltd., Tianjin
来源：
Huagong Xuebao/CIESC Journal | 2024年 / 75卷 / 03期
关键词：
bubble diameter; bubbling column reactor; CFD-PBM model; gas holdup; gas-liquid volumetric mass transfer coefficient;
D O I：
10.11949/0438-1157.20231331
中图分类号：
学科分类号：
摘要：
A numerical simulation investigation was performed on the gas-liquid two-phase flow and gas-liquid mass transfer characteristics within a bubbling column reactor with various numbers of horizontally placed porous plates using the Euler-Euler dual-fluid model. Furthermore, the research investigated the impact of horizontal porous plates situated at different positions and various superficial gas velocities on gas holdup, bubble diameter, and gas-liquid mass transfer coefficient in the bubbling column reactor. The results indicate that the distribution of gas holdup was affected by the quantity and location of the porous plates. As the number of porous plates increased, the gas holdup in the upper part of the liquid phase of the bubbling column reactor increased; after installing the porous plate, the average gas holdup at the inner diameter of the reactor changed significantly, resulting in an M-shaped distribution; at various superficial gas velocities, the proportion of small bubbles with a diameter of 1—2 mm accounted for over 30% in the bubbling column reactor without the installation of a porous plate. Conversely, the proportion of small bubbles increased significantly after the installation of a porous plate. The gas-liquid mass transfer coefficient is relatively gentle in the central area (radial dimensionless between -0.5 and 0.5), with little fluctuation. Finally, the volume mass transfer coefficient obtained from the simulation calculation was compared with the calculated value of Akita’s correlation equation. The calculation result was slightly higher. © 2024 Materials China. All rights reserved.
引用
收藏
页码：801 / 814
页数：13
相关论文
共 37 条
  • [1] Mohammadzade Fard S, Farsi M, Rahimpour M R., Optimization of ethylene dimerization in a bubble column reactor based on coupling kinetic and equilibrium models, Chemical Engineering Research and Design, 174, pp. 357-364, (2021)
  • [2] Muharam Y, Putri A D., Simulation of hydrotreating of vegetable oil in a slurry bubble column reactor for green diesel production, International Journal of Technology, 9, 6, (2018)
  • [3] Shaikh A, Al-Dahhan M., Scale-up of bubble column reactors: a review of current state-of-the-art, Industrial & Engineering Chemistry Research, 52, 24, pp. 8091-8108, (2013)
  • [4] Li G, Yang X G, Dai G C., CFD simulation of gas-liquid flow in bubble column, Journal of Chemical Industry and Engineering (China), 59, 8, pp. 1958-1965, (2008)
  • [5] Bo S S, Wu J T, Sun L Y., Numerical simulation of effect of physical properties on loop reactor of slurry bed, Petroleum Processing and Petrochemicals, 44, 8, pp. 59-62, (2013)
  • [6] Chen P, Dudukovic M P, Sanyal J., Three-dimensional simulation of bubble column flows with bubble coalescence and breakup, AIChE Journal, 51, 3, pp. 696-712, (2005)
  • [7] van Baten J M, Krishna R., Eulerian simulation strategy for scaling up a bubble column slurry reactor for Fischer-Tropsch synthesis, Industrial & Engineering Chemistry Research, 43, 16, pp. 4483-4493, (2004)
  • [8] Moller F, Lau Y M, Seiler T, Et al., A study on the influence of the tube layout on sub-channel hydrodynamics in a bubble column with internals, Chemical Engineering Science, 179, pp. 265-283, (2018)
  • [9] Jhawar A K, Prakash A., Bubble column with internals: effects on hydrodynamics and local heat transfer, Chemical Engineering Research and Design, 92, 1, pp. 25-33, (2014)
  • [10] Besagni G, Inzoli F., Influence of internals on counter-current bubble column hydrodynamics: holdup, flow regime transition and local flow properties, Chemical Engineering Science, 145, pp. 162-180, (2016)
1234