Bubble/Droplet Formation and Mass Transfer During Gas-Liquid-Liquid Segmented Flow with Soluble Gas in a Microchannel

	Bubble/Droplet Formation and Mass Transfer During Gas-Liquid-Liquid Segmented Flow with Soluble Gas in a Microchannel
	Dong, Zhengya 1,2; Yao, Chaoqun 1; Liu, Yanyan 1,2; Zhao, Shuainan 1,2; Chen, Guangwen 1,3
刊名	AICHE JOURNAL
	2017-05-01
卷号	63 期号:5 页码:1727-1739
关键词	microreactor microfluidic hydrodynamics multiphase three-phase
英文摘要	Microchannels have great potential in intensification of gas-liquid-liquid reactions involving reacting gases, such as hydrogenation. This work uses CO2-octane-water system to model the hydrodynamics and mass transfer of such systems in a microchannel with double T-junctions. Segmented flows are generated with three inlet sequences and the size laws of dispersed phases are obtained. Three generation mechanisms of dispersed gas bubbles/water droplets are identified: squeezing by the oil phase, cutting by the droplet/bubble, cutting by the water-oil/gas-oil interface. Based on the gas dissolution rate, the mass transfer coefficients are calculated. It is found that water droplet can significantly enhance the transfer of CO2 into the oil phase initially. When bubble-droplet cluster are formed downstream the microchannel, droplet will retard the mass transfer. Other characteristics such as phase hold-up, bubble velocity and bubble dissolution rate are also discussed. The information is beneficial for microreactor design when applying three-phase reactions. (C) 2016 American Institute of Chemical Engineers AIChE J
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 ; SQUARE CROSS-SECTION ; TAYLOR FLOW ; SLUG FLOW ; RECTANGULAR MICROCHANNELS ; WATER EMULSIONS ; PRESSURE-DROP ; VOID FRACTION ; HEAT-TRANSFER ; T-JUNCTION
收录类别	SCI
语种	英语
WOS记录号	WOS:000400656700021
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/151980]
专题	大连化学物理研究所_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 Natl Lab Clean Energy, Dalian 116023, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Jiangsu Natl Synerget Innovat Ctr Adv Mat SICAM, Nanjing 211816, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Dong, Zhengya,Yao, Chaoqun,Liu, Yanyan,et al. Bubble/Droplet Formation and Mass Transfer During Gas-Liquid-Liquid Segmented Flow with Soluble Gas in a Microchannel[J]. AICHE JOURNAL,2017,63(5):1727-1739.
APA	Dong, Zhengya,Yao, Chaoqun,Liu, Yanyan,Zhao, Shuainan,&Chen, Guangwen.(2017).Bubble/Droplet Formation and Mass Transfer During Gas-Liquid-Liquid Segmented Flow with Soluble Gas in a Microchannel.AICHE JOURNAL,63(5),1727-1739.
MLA	Dong, Zhengya,et al."Bubble/Droplet Formation and Mass Transfer During Gas-Liquid-Liquid Segmented Flow with Soluble Gas in a Microchannel".AICHE JOURNAL 63.5(2017):1727-1739.