DICP OpenIR
Effect of surface properties on the flow characteristics and mass transfer performance in microchannels
Zhao, Yuchao; Su, Yuanhai; Chen, Guangwen; Yuan, Quan
KeywordImmiscible Fluids Microreactor Microchannel Mass Transfer Surface Modification
Source PublicationCHEMICAL ENGINEERING SCIENCE
2010-03-01
DOI10.1016/j.ces.2009.10.027
Volume65Issue:5Pages:1563-1570
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
WOS SubjectEngineering, Chemical
WOS Research AreaEngineering
WOS KeywordLIQUID SLUG-FLOW ; CAPILLARY-MICROREACTOR ; HEAT-TRANSFER ; REACTOR ; INTENSIFICATION ; CONTACTORS ; PATTERNS
AbstractIn this work, the influence of surface properties on the flow characteristics and mass transfer performance of two immiscible liquids are investigated in the opposed and cross-flow configuration microchannels, as the volumetric flux ratio is far <1. For visually identifying flow patterns in transparent PMMA microchannels, dyed de-ionized water and kerosene are selected as test fluids. To investigate the mass transfer characteristics in stainless steel microchannels, water-succinic acid-n-butanol is chosen as a typical system. Reynolds number varied between 11 and 275. Only at low Rem numbers, the dispersed phase flow pattern can occur in the opposed T-shaped PMMA microchannel before surface modification. At higher Rem numbers, only the continuous phase flow pattern (parallel flow) is observed before and after surface modification. Moreover, the fluctuation amplitude after surface modification is larger than before surface modification at the opposed T-junction. To eliminate the effects of the sampling intervals and separation process of oil-water two phases on mass transfer performance, one new testing method is established by manufacturing the novel oil-water separator based on the principle of siphon. For the conditions applied during the study, the overall volumetric mean mass transfer coefficients range from 0.19 to 11.96 s(-1), which are one or three orders of magnitude higher than those in typical conventional large scaled contactors. (C) 2009 Elsevier Ltd. All rights reserved.
Language英语
WOS IDWOS:000275588500006
Citation statistics
Cited Times:35[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/141651
Collection中国科学院大连化学物理研究所
AffiliationChinese Acad Sci, Dalian Natl Lab Clean Energy, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Zhao, Yuchao,Su, Yuanhai,Chen, Guangwen,et al. Effect of surface properties on the flow characteristics and mass transfer performance in microchannels[J]. CHEMICAL ENGINEERING SCIENCE,2010,65(5):1563-1570.
APA Zhao, Yuchao,Su, Yuanhai,Chen, Guangwen,&Yuan, Quan.(2010).Effect of surface properties on the flow characteristics and mass transfer performance in microchannels.CHEMICAL ENGINEERING SCIENCE,65(5),1563-1570.
MLA Zhao, Yuchao,et al."Effect of surface properties on the flow characteristics and mass transfer performance in microchannels".CHEMICAL ENGINEERING SCIENCE 65.5(2010):1563-1570.
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