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Numerical simulations of bubble behavior and mass transfer in CO2 capture system with ionic liquids
Bao, Di1,2; Zhang, Xin1,2; Dong, Haifeng1; Ouyang, Zailong1,2; Zhang, Xiangping1; Zhang, Suojiang1
2015-10-02
Source PublicationCHEMICAL ENGINEERING SCIENCE
ISSN0009-2509
Volume135Issue:OCTPages:76-88
AbstractIonic 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.
KeywordComputational Fluid Dynamics (Cfd) Bubble Behavior Coalescence Mass Transfer Ionic Liquid
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.ces.2015.06.035
Indexed BySCI
Language英语
WOS KeywordTRANSFER COEFFICIENT ; MULTIPHASE FLOWS ; CARBON-DIOXIDE ; SINGLE BUBBLE ; LOW-VISCOSITY ; FLUID ; DYNAMICS ; COLUMNS ; VOLUME ; RISE
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000363036100009
Citation statistics
Cited Times:18[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/19663
Collection多相复杂系统国家重点实验室
Affiliation1.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
Recommended Citation
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.
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