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题名: Intensified CO2 absorption in a microchannel reactor under elevated pressures
作者: Yao, Chaoqun1;  Zhu, Kai1;  Liu, Yanyan1;  Liu, Hongchen1;  Jiao, Fengjun1;  Chen, Guangwen1
关键词: Carbon capture ;  Microtechnology ;  Separation ;  Purification ;  Amine
刊名: CHEMICAL ENGINEERING JOURNAL
发表日期: 2017-07-01
DOI: 10.1016/j.cej.2017.03.003
卷: 319, 页:179-190
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Engineering, Environmental ;  Engineering, Chemical
研究领域[WOS]: Engineering
英文摘要: This paper presents a study on the hydrodynamics and mass transfer performance of absorption of CO2 into deionized water and DEA solutions in a microreactor under elevated pressures up to 4.0 MPa. It is demonstrated that increasing gas density (system pressure) leads to increased pressure drop. Considering such effect, a modified Lockhart-Martinelli model is developed, showing good prediction over the two-phase pressure drop. For the mass transfer performance, parametric studies by varying system pressure, temperature of feeding fluids, molar ratio of DEA/CO2 and CO2-loaded DEA solutions are presented. Two empirical correlations based on the power consumption are developed for the prediction of mass transfer coefficients in physical and chemical absorptions, respectively. The results suggest significant intensification is achieved in the microreactor. Besides, dramatic increase of CO2 loading in the rich absorbents is also obtained, which is very attractive for solvent regeneration. The findings in this paper can serve as guidance in the design of processes with high-pressure operations, such as natural gas purification or biogas recovery.(C) 2017 Elsevier B.V. All rights reserved.
关键词[WOS]: GAS-LIQUID FLOW ;  MASS-TRANSFER CHARACTERISTICS ;  CARBON-DIOXIDE ABSORPTION ;  2-PHASE FLOW ;  AQUEOUS-SOLUTIONS ;  SLUG FLOW ;  MONOETHANOLAMINE SOLUTIONS ;  RECTANGULAR MICROCHANNEL ;  NITROUS-OXIDE ;  PILOT-PLANT
语种: 英语
WOS记录号: WOS:000399633200019
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/152319
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China

Recommended Citation:
Yao, Chaoqun,Zhu, Kai,Liu, Yanyan,et al. Intensified CO2 absorption in a microchannel reactor under elevated pressures[J]. CHEMICAL ENGINEERING JOURNAL,2017,319:179-190.
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