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Intensified CO2 absorption in a microchannel reactor under elevated pressures
Yao, Chaoqun; Zhu, Kai; Liu, Yanyan; Liu, Hongchen; Jiao, Fengjun; Chen, Guangwen
关键词Carbon Capture Microtechnology Separation Purification Amine
刊名CHEMICAL ENGINEERING JOURNAL
2017-07-01
DOI10.1016/j.cej.2017.03.003
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
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
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.
语种英语
WOS记录号WOS:000399633200019
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/152319
专题中国科学院大连化学物理研究所
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
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GB/T 7714
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.
APA Yao, Chaoqun,Zhu, Kai,Liu, Yanyan,Liu, Hongchen,Jiao, Fengjun,&Chen, Guangwen.(2017).Intensified CO2 absorption in a microchannel reactor under elevated pressures.CHEMICAL ENGINEERING JOURNAL,319,179-190.
MLA Yao, Chaoqun,et al."Intensified CO2 absorption in a microchannel reactor under elevated pressures".CHEMICAL ENGINEERING JOURNAL 319(2017):179-190.
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