Hydrodynamics of air-kerosene bubble column under elevated pressure in homogeneous flow regime

doi:10.1016/j.cjche.2020.08.031

中国化学工程学报 ›› 2021, Vol. 33 ›› Issue (5): 190-202.DOI: 10.1016/j.cjche.2020.08.031

• Process Systems Engineering and Process Safety • 上一篇下一篇

Hydrodynamics of air-kerosene bubble column under elevated pressure in homogeneous flow regime

Bay Van Tran¹, Son Ich Ngo¹, Young-Il Lim¹, Keon Bae², Dong Hyun Lee², Kang-Seok Go³, Nam-Sun Nho³

1 Center of Sustainable Process Engineering (CoSPE), Department of Chemical Engineering, Hankyong National University, Gyeonggi-do, Anseong-si, Jungang-ro 327, 17579, Republic;
of Korea;
2 School of Chemical Engineering, Sungkyunkwan University, 2066 Seobu-ro, Jangan, Suwon 16419, Republic of Korea;
3 Center for Convergent Chemical Process (CCP), 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea

收稿日期:2020-03-20 修回日期:2020-07-28 出版日期:2021-05-28 发布日期:2021-08-19
通讯作者: Young-Il Lim
基金资助:
We acknowledge with gratitude the financial support from the R&D Convergence Program of the Ministry of Science, ICT and Future Planning (MSIP) and the National Research Council of Science & Technology (NST) of the Republic of Korea (CRC-14-1- KRICT). This research was also supported by the National Research Foundation of Korea (NRF) grant funded by the Korea Ministry of Science and ICT (2020R1F1A1066097).

Hydrodynamics of air-kerosene bubble column under elevated pressure in homogeneous flow regime

Bay Van Tran¹, Son Ich Ngo¹, Young-Il Lim¹, Keon Bae², Dong Hyun Lee², Kang-Seok Go³, Nam-Sun Nho³

1 Center of Sustainable Process Engineering (CoSPE), Department of Chemical Engineering, Hankyong National University, Gyeonggi-do, Anseong-si, Jungang-ro 327, 17579, Republic;
of Korea;
2 School of Chemical Engineering, Sungkyunkwan University, 2066 Seobu-ro, Jangan, Suwon 16419, Republic of Korea;
3 Center for Convergent Chemical Process (CCP), 141 Gajeong-ro, Yuseong-gu, Daejeon 34114, Republic of Korea

Received:2020-03-20 Revised:2020-07-28 Online:2021-05-28 Published:2021-08-19
Contact: Young-Il Lim
Supported by:
We acknowledge with gratitude the financial support from the R&D Convergence Program of the Ministry of Science, ICT and Future Planning (MSIP) and the National Research Council of Science & Technology (NST) of the Republic of Korea (CRC-14-1- KRICT). This research was also supported by the National Research Foundation of Korea (NRF) grant funded by the Korea Ministry of Science and ICT (2020R1F1A1066097).

摘要/Abstract

摘要： A multiphase computational fluid dynamics (CFD) model coupled with the population balance equation (PBE) was developed in a homogeneous air-kerosene bubble column under elevated pressure (P). The specific pressure drop (ΔP/L), gas holdup (αG), and Sauter mean diameter (d₃₂) were experimentally measured in the bubble column with 1.8 m height and 0.1 m inner diameter, which was operated at a superficial gas velocity of 12.3 mm·s^-1, and P = 1-35 bar (1 bar = 10⁵ Pa). A modified drag coefficient model was proposed to consider the effect of bubble swarm and pressure on hydrodynamics of the bubble column. The Luo breakage model was modified to account for liquid density, viscosity, surface tension and gas density. The ΔP/L, αG, and d₃₂ obtained from the CFD model were compared with experimental data, and the gas density-dependent parameters of the CFD model were identified. With increasing P from 1 to 35 bar, the αG varied from 5.4% to 7.2% and the d₃₂ decreased from 2.3 to 1.5 mm. The CFD-PBE model is applicable to predict hydrodynamics of pressurized bubble columns for gas-organic liquid in the homogeneous regime.

关键词: Bubble column, Air-kerosene, High pressure, Homogenous regime, Computational fluid dynamics (CFD), Population balance equation (PBE)

Abstract: A multiphase computational fluid dynamics (CFD) model coupled with the population balance equation (PBE) was developed in a homogeneous air-kerosene bubble column under elevated pressure (P). The specific pressure drop (ΔP/L), gas holdup (αG), and Sauter mean diameter (d₃₂) were experimentally measured in the bubble column with 1.8 m height and 0.1 m inner diameter, which was operated at a superficial gas velocity of 12.3 mm·s^-1, and P = 1-35 bar (1 bar = 10⁵ Pa). A modified drag coefficient model was proposed to consider the effect of bubble swarm and pressure on hydrodynamics of the bubble column. The Luo breakage model was modified to account for liquid density, viscosity, surface tension and gas density. The ΔP/L, αG, and d₃₂ obtained from the CFD model were compared with experimental data, and the gas density-dependent parameters of the CFD model were identified. With increasing P from 1 to 35 bar, the αG varied from 5.4% to 7.2% and the d₃₂ decreased from 2.3 to 1.5 mm. The CFD-PBE model is applicable to predict hydrodynamics of pressurized bubble columns for gas-organic liquid in the homogeneous regime.

Key words: Bubble column, Air-kerosene, High pressure, Homogenous regime, Computational fluid dynamics (CFD), Population balance equation (PBE)

Bay Van Tran, Son Ich Ngo, Young-Il Lim, Keon Bae, Dong Hyun Lee, Kang-Seok Go, Nam-Sun Nho. Hydrodynamics of air-kerosene bubble column under elevated pressure in homogeneous flow regime[J]. 中国化学工程学报, 2021, 33(5): 190-202.

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Hydrodynamics of air-kerosene bubble column under elevated pressure in homogeneous flow regime

Hydrodynamics of air-kerosene bubble column under elevated pressure in homogeneous flow regime

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