Knowledge Management System Of Institute of process engineering,CAS
| 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 Publication | PARTICUOLOGY
 |
| ISSN | 1674-2001 |
| Volume | 50Pages:135-143 |
| Abstract | Gas-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. |
| Keyword | Mathematical modeling Counter-current downer Flooding EMMS Mesoscale |
| DOI | 10.1016/j.partic.2019.08.001 |
| Language | 英语 |
| WOS Keyword | FLOW ; HETEROGENEITY |
| Funding Project | Strategic Priority Research Program of the Chinese Academy of Sciences[XDA07080400] ; Informationization Program of the Chinese Academy of Sciences[XXH13506-301] |
| WOS Research Area | Engineering ; Materials Science |
| WOS Subject | Engineering, Chemical ; Materials Science, Multidisciplinary |
| Funding Organization | Strategic Priority Research Program of the Chinese Academy of Sciences ; Informationization Program of the Chinese Academy of Sciences |
| WOS ID | WOS:000524974400014 |
| Publisher | ELSEVIER SCIENCE INC |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/40121 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Liu, Xinhua; Ge, Wei |
| Affiliation | 1.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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