DICP OpenIR
Effect of surface properties on the flow characteristics and mass transfer performance in microchannels
Zhao, Yuchao; Su, Yuanhai; Chen, Guangwen; Yuan, Quan
关键词Immiscible Fluids Microreactor Microchannel Mass Transfer Surface Modification
刊名CHEMICAL ENGINEERING SCIENCE
2010-03-01
DOI10.1016/j.ces.2009.10.027
65期:5页:1563-1570
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]LIQUID SLUG-FLOW ; CAPILLARY-MICROREACTOR ; HEAT-TRANSFER ; REACTOR ; INTENSIFICATION ; CONTACTORS ; PATTERNS
英文摘要In 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.
语种英语
WOS记录号WOS:000275588500006
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/141651
专题中国科学院大连化学物理研究所
作者单位Chinese Acad Sci, Dalian Natl Lab Clean Energy, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
推荐引用方式
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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