Intensification of gas-liquid two-phase flow and mass transfer in microchannels by sudden expansions

被引：32
作者：
Zhang, Shizhe [1 ]
Zhu, Chunying [1 ]
Feng, Huisheng [1 ]
Fu, Taotao [1 ]
Ma, Youguang [1 ]
机构：
[1] Tianjin Univ, Sch Chem Engn & Technol, State Key Lab Chem Engn, Tianjin 300072, Peoples R China
来源：
CHEMICAL ENGINEERING SCIENCE | 2021年 / 229卷 / 229期
基金：
中国国家自然科学基金;
关键词：
Microchannel; Sudden expansion unit; Gas-liquid mass transfer; Energy consumption; CO2; ABSORPTION; AQUEOUS-SOLUTION; PRESSURE-DROP; TAYLOR FLOW; SLUG FLOW; HYDROGENATION; ENHANCEMENT; PERFORMANCE; SIMULATION; FLUID;
D O I：
10.1016/j.ces.2020.116040
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The intensification of mass transfer of CO2 absorption into [Bmim][BF4] aqueous solution by continuous sudden expansion units was investigated experimentally in microchannels. The influences of two-phase flow rates and the number of sudden expansion units on pressure drop and volumetric mass transfer coefficient were studied systematically. The results indicate that the sudden expansion structure could remarkably enhance gas-liquid mass transfer. The enhancement factor of mass transfer increases with increasing the number of sudden expansion units and gas-liquid flow rate ratio, while the pressure drop has only slight elevation. The effective mass transfer enhancement efficiency was assessed according to the energy consumption and enhancement factor, which could achieve from 1.2 to 2.4, showing excellent mass transfer intensification effect of the sudden expansion structure. Moreover, a new correlation was proposed for predicting liquid side volumetric mass transfer coefficient. (c) 2020 Elsevier Ltd. All rights reserved.
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页数：9
相关论文
共 35 条
[21]   Liquid-liquid extraction system with microstructured coiled flow inverter and other capillary setups for single-stage extraction applications [J].
Kurt, Safa Kutup ;
Guersel, Iris Vural ;
Hessel, Volker ;
Nigam, Krishna D. P. ;
Kockmann, Norbert .
CHEMICAL ENGINEERING JOURNAL, 2016, 284 :764-777
[22]   Intensification of liquid-liquid two-phase mass transfer in a capillary microreactor system [J].
Li, Guangxiao ;
Pu, Xin ;
Shang, Minjing ;
Zha, Li ;
Su, Yuanhai .
AICHE JOURNAL, 2019, 65 (01) :334-346
[23]   The physical properties of aqueous solution of room-temperature ionic liquids based on imidazolium: Database and evaluation [J].
Liu, Weiwei ;
Cheng, Lingyan ;
Zhang, Yumei ;
Wang, Huaping ;
Yu, Mingfang .
JOURNAL OF MOLECULAR LIQUIDS, 2008, 140 (1-3) :68-72
[24]   Simulation of the mixing process in a straight tube with sudden changed cross-section [J].
Lu, Yangcheng ;
Zhu, Shan ;
Wang, Kai ;
Luo, Guangsheng .
CHINESE JOURNAL OF CHEMICAL ENGINEERING, 2016, 24 (06) :711-718
[25]   Enhancement of oxygen mass transfer rate in the presence of nanosized particles [J].
Nagy, Endre ;
Feczko, Tivadar ;
Koroknai, Balaks .
CHEMICAL ENGINEERING SCIENCE, 2007, 62 (24) :7391-7398
[26]   Flow Uniformity in Deep Microchannel Reactor under High Throughput Conditions [J].
Sotowa, Ken-Ichiro ;
Sugiyama, Shigeru ;
Nakagawa, Keizo .
ORGANIC PROCESS RESEARCH & DEVELOPMENT, 2009, 13 (05) :1026-1031
[27]   Catalytic hydrogenation of o-nitroanisole in a microreactor:: Reactor performance and kinetic studies [J].
Tadepalli, Sunitha ;
HaIder, Raghunath ;
Lawal, Adeniyi .
CHEMICAL ENGINEERING SCIENCE, 2007, 62 (10) :2663-2678
[28]   Capabilities and limitations of 2-dimensional and 3-dimensional numerical methods in modeling the fluid flow in sudden expansion microchannels [J].
Tsai, Chien-Hsiung ;
Chen, Han-Taw ;
Wang, Yao-Nan ;
Lin, Che-Hsin ;
Fu, Lung-Ming .
MICROFLUIDICS AND NANOFLUIDICS, 2007, 3 (01) :13-18
[29]  
Whitman W. G., 1962, INT J HEAT MASS TRAN, V5, P429, DOI [10.1016/0017-9310(62)90032-7, DOI 10.1016/0017-9310(62)90032-7]
[30]   Asymmetrical breakup of bubbles at a microfluidic T-junction divergence: feedback effect of bubble collision [J].
Wu, Yining ;
Fu, Taotao ;
Zhu, Chunying ;
Lu, Yutao ;
Ma, Youguang ;
Li, Huai Z. .
MICROFLUIDICS AND NANOFLUIDICS, 2012, 13 (05) :723-733
1234