CAS OpenIR
Modeling the axial hydrodynamics of gas-solid counter-current downers
Liu, Juanbo1,2; Liu, Xinhua1; Zhang, Zhixin1; Zhao, Hui3; Ge, Wei1,2
2020-06-01
Source PublicationPARTICUOLOGY
ISSN1674-2001
Volume50Pages:135-143
AbstractGas-solid counter-current downer reactors, in which particles move downward in an upward gas flow, can achieve high solid concentration for high heat and/or mass transfer rates. However, the particles may reverse their direction or even be carried out of the reactor as the gas flow rate increases. This is closely related to "flooding" in counter-current flows. The energy minimization multiscale (EMMS) model well describes multiscale heterogeneity in gas-solid cocurrent upward flows. It is further developed to simulate gas-solid counter-current downward flows because similar heterogeneity can also be found in downers. The model characterizes well the axial hydrodynamics and predicts an inflexional voidage variation with superficial gas velocity in the fully developed region. This is supported by a simulation based on computational fluid dynamics and the discrete element method. The flooding predicted by the model agrees better with experiment than previous models. (C) 2019 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
KeywordMathematical modeling Counter-current downer Flooding EMMS Mesoscale
DOI10.1016/j.partic.2019.08.001
Language英语
WOS KeywordFLOW ; HETEROGENEITY
Funding ProjectStrategic Priority Research Program of the Chinese Academy of Sciences[XDA07080400] ; Informationization Program of the Chinese Academy of Sciences[XXH13506-301]
WOS Research AreaEngineering ; Materials Science
WOS SubjectEngineering, Chemical ; Materials Science, Multidisciplinary
Funding OrganizationStrategic Priority Research Program of the Chinese Academy of Sciences ; Informationization Program of the Chinese Academy of Sciences
WOS IDWOS:000524974400014
PublisherELSEVIER SCIENCE INC
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/40121
Collection中国科学院过程工程研究所
Corresponding AuthorLiu, Xinhua; Ge, Wei
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100490, Peoples R China
3.China Univ Petr, State Key Lab Heavy Oil Proc, Qingdao 266555, Peoples R China
Recommended Citation
GB/T 7714
Liu, Juanbo,Liu, Xinhua,Zhang, Zhixin,et al. Modeling the axial hydrodynamics of gas-solid counter-current downers[J]. PARTICUOLOGY,2020,50:135-143.
APA Liu, Juanbo,Liu, Xinhua,Zhang, Zhixin,Zhao, Hui,&Ge, Wei.(2020).Modeling the axial hydrodynamics of gas-solid counter-current downers.PARTICUOLOGY,50,135-143.
MLA Liu, Juanbo,et al."Modeling the axial hydrodynamics of gas-solid counter-current downers".PARTICUOLOGY 50(2020):135-143.
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