Numerical simulations of bubble behavior and mass transfer in CO2 capture system with ionic liquids

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	Numerical simulations of bubble behavior and mass transfer in CO2 capture system with ionic liquids
	Bao, Di 1,2; Zhang, Xin 1,2; Dong, Haifeng 1; Ouyang, Zailong 1,2; Zhang, Xiangping 1; Zhang, Suojiang 1
刊名	CHEMICAL ENGINEERING SCIENCE
	2015-10-02
卷号	135 期号:OCT 页码:76-88
关键词	Computational fluid dynamics (CFD) Bubble behavior Coalescence Mass transfer Ionic liquid
ISSN号	0009-2509
英文摘要	Ionic liquids (ILs) have exhibited excellent performance on CO2 capture. However, the lack of research on transport properties has become a bottleneck of industrial application. In order to understand the bubble behavior and mass transfer performance in CO2 capture systems with ILs, a computational fluid dynamics (CFD) method with two improvements is developed in this paper. One improvement is that a drag force equation suitable for IL systems is introduced into the hydrodynamics model, and the other one is that the influence of CO2 concentration in liquid phase on viscosity of ILs is considered in the mass transfer model. Based on the developed CFD method, the bubble behavior and mass transfer properties are accurately described. The simulation results of bubble diameter, velocity and aspect ratio agree well with the experimental data with the overall deviation of 7.52%, 12.17% and 5.17%, respectively. The bubble coalescence phenomenon is illustrated by pressure gradient field analysis rather than conventional pressure field analysis, which can represent the drag force and lift force directly. The simulation results also show that the CO2 mass transfer is kinetic-controlled in pure ILs and thermodynamic-controlled in aqueous ILs, respectively. (C) 2015 Elsevier Ltd. All rights reserved.
WOS标题词	Science & Technology ; Technology
类目[WOS]	Engineering, Chemical
研究领域[WOS]	Engineering
关键词[WOS]	TRANSFER COEFFICIENT ; MULTIPHASE FLOWS ; CARBON-DIOXIDE ; SINGLE BUBBLE ; LOW-VISCOSITY ; FLUID ; DYNAMICS ; COLUMNS ; VOLUME ; RISE
收录类别	SCI
语种	英语
WOS记录号	WOS:000363036100009
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/19663]
专题	过程工程研究所_多相复杂系统国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing Key Lab Ion Liquids Clean Proc, Beijing 100190, Peoples R China 2.Univ Chinise Acad Sci, Coll Chem & Chem Engn, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Bao, Di,Zhang, Xin,Dong, Haifeng,et al. Numerical simulations of bubble behavior and mass transfer in CO2 capture system with ionic liquids[J]. CHEMICAL ENGINEERING SCIENCE,2015,135(OCT):76-88.
APA	Bao, Di,Zhang, Xin,Dong, Haifeng,Ouyang, Zailong,Zhang, Xiangping,&Zhang, Suojiang.(2015).Numerical simulations of bubble behavior and mass transfer in CO2 capture system with ionic liquids.CHEMICAL ENGINEERING SCIENCE,135(OCT),76-88.
MLA	Bao, Di,et al."Numerical simulations of bubble behavior and mass transfer in CO2 capture system with ionic liquids".CHEMICAL ENGINEERING SCIENCE 135.OCT(2015):76-88.