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Hydrodynamics and mass transfer characteristics in gas-liquid flow through a rectangular microchannel
Yue, Jun; Chen, Guangwen; Yuan, Quan; Luo, Lingai; Gonthier, Yves
关键词Microchannel Multiphase Flow Mass Transfer Absorption Pressure Drop Process Intensification
刊名CHEMICAL ENGINEERING SCIENCE
2007-04-01
DOI10.1016/j.ces.2006.12.057
62期:7页:2096-2108
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Technology
类目[WOS]Engineering, Chemical
研究领域[WOS]Engineering
关键词[WOS]ADIABATIC 2-PHASE FLOW ; INTERFACIAL AREA ; PRESSURE-DROP ; MICROSTRUCTURED REACTORS ; TRANSFER COEFFICIENTS ; DIRECT FLUORINATION ; MICRO REACTORS ; CARBON-DIOXIDE ; VOID FRACTION ; ABSORPTION
英文摘要Researches on two-phase transfer and reaction processes in microchannnels are important to the design of multiphase microchemical systems. In the present work, hydrodynamics and mass transfer characteristics in cocurrent gas-liquid flow through a horizontal rectangular microchannel with a hydraulic diameter of 667 mu m have been investigated experimentally. Liquid side volumetric mass transfer coefficients were measured by absorbing pure CO2 into water and a 0.3 M NaHCO3 / 0.3M Na2CO3 buffer solution. Interfacial areas were determined by absorbing pure CO2 into a 1 M NaOH solution. Two-phase flow patterns and pressure drop data were also obtained and analyzed. This paper shows that two-phase frictional pressure drop in the microchannel can be well predicted by the Lockhart-Martinelli method if we use a new correlation of C value in the Chisholm's equation. Liquid side volumetric mass transfer coefficient and interfacial area as high as about 21 s(-1) and 9000 m(2)/m(3), respectively, can be achieved in the microchannel. Generally, liquid side volumetric mass transfer coefficient increases with the increasing superficial liquid or gas velocity, which can be described satisfactorily by the developed empirical correlations. A comparison of mass transfer performance among different gas-liquid contactors; reveals that the gas-liquid microchannel contactor of this study can provide at least one or two orders of magnitude higher liquid side volumetric mass transfer coefficients and interfacial areas than the others. (c) 2007 Elsevier Ltd. All rights reserved.
语种英语
WOS记录号WOS:000245397400020
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/140665
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
2.Univ Savoie, LOCIE, F-73376 Le Bourget Du Lac, France
3.Grad Univ, Chinese Acad Sci, Beijing 100039, Peoples R China
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Yue, Jun,Chen, Guangwen,Yuan, Quan,et al. Hydrodynamics and mass transfer characteristics in gas-liquid flow through a rectangular microchannel[J]. CHEMICAL ENGINEERING SCIENCE,2007,62(7):2096-2108.
APA Yue, Jun,Chen, Guangwen,Yuan, Quan,Luo, Lingai,&Gonthier, Yves.(2007).Hydrodynamics and mass transfer characteristics in gas-liquid flow through a rectangular microchannel.CHEMICAL ENGINEERING SCIENCE,62(7),2096-2108.
MLA Yue, Jun,et al."Hydrodynamics and mass transfer characteristics in gas-liquid flow through a rectangular microchannel".CHEMICAL ENGINEERING SCIENCE 62.7(2007):2096-2108.
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