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| Long-time coarse-grained CFD-DEM simulation of residence time distribution of polydisperse particles in a continuously operated multiple-chamber fluidized bed | |
Lan, Bin1,2; Xu, Ji1,2; Zhao, Peng1,2; Zou, Zheng1,2; Zhu, Qingshan1,2,3; Wang, Junwu1,2,3
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| 2020-06-29 | |
| Source Publication | CHEMICAL ENGINEERING SCIENCE
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| ISSN | 0009-2509 |
| Volume | 219Pages:11 |
| Abstract | Residence time distribution of particles is a critical parameter for proper design of gas-solid fluidized beds, especially in many non-catalytic solid conversion processes where it is highly desirable to match the residence time of a particle and its complete conversion time to achieve the synchronized conversion of particles of different sizes. However, the requisite of considering particle polydispersity and the long residence time of particles required by reaction kinetics together pose a great challenge to the computational fluid dynamics study of such systems. To this end, a GPU-based, massively parallel coarse-grained CFD-DEM method-the EMMS-DPM method (Lu et al., 2014) was extended to simulate the residence time distribution of polydisperse particles in a continuously operated multiple-chamber fluidized bed with a calculation of physical time of up to one hour. It was shown that the experimentally measured pressure drop of the bed or the solid holdup can be predicted reasonably well by the ad hoc drag models of non-spherical and polydisperse particles proposed in present study; the residence time distribution of particles of whole system can also be predicted correctly; and finally, the ratio of the mean residence time of coarse particles to that of fine particles is about three, which is insufficient to achieve the synchronized conversion of particles of different sizes according to an ideally theoretical analysis, great effort is needed to get a better match between the residence time and the compete conversion time of particles. (C) 2020 Elsevier Ltd. All rights reserved. |
| Keyword | Fluidization Polydisperse particles Particle non-sphericity Residence time distribution Gas-solid flow Multiphase flow |
| DOI | 10.1016/j.ces.2020.115599 |
| Language | 英语 |
| WOS Keyword | GAS-SOLID FLOW ; EMMS DRAG MODEL ; EULERIAN SIMULATION ; SIZE DISTRIBUTION ; GRID SIMULATION ; GELDART ; RISERS ; SEGREGATION ; HYDRODYNAMICS ; PERFORMANCE |
| Funding Project | Fund of State Key Laboratory of Multiphase Complex Systems[MPCS-2019-A-07] ; Fund of State Key Laboratory of Multiphase Complex Systems[MPCS-2019-D-10] ; National Natural Science Foundation of China[21978295] ; National Natural Science Foundation of China[91834303] ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences[IAGM-2019-A13] ; Key Research Program of Frontier Science, Chinese Academy of Sciences[QYZDJ-SSW-JSC029] ; "Transformational Technologies for Clean Energy and Demonstration", Strategic Priority Research Program of the Chinese Academy of Sciences[XDA21030700] |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Chemical |
| Funding Organization | Fund of State Key Laboratory of Multiphase Complex Systems ; National Natural Science Foundation of China ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences ; Key Research Program of Frontier Science, Chinese Academy of Sciences ; "Transformational Technologies for Clean Energy and Demonstration", Strategic Priority Research Program of the Chinese Academy of Sciences |
| WOS ID | WOS:000530711700031 |
| Publisher | PERGAMON-ELSEVIER SCIENCE LTD |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/40439 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Wang, Junwu |
| Affiliation | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, POB 353, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Innovat Acad Green Mfg, Beijing 100190, Peoples R China |
| Recommended Citation GB/T 7714 | Lan, Bin,Xu, Ji,Zhao, Peng,et al. Long-time coarse-grained CFD-DEM simulation of residence time distribution of polydisperse particles in a continuously operated multiple-chamber fluidized bed[J]. CHEMICAL ENGINEERING SCIENCE,2020,219:11. |
| APA | Lan, Bin,Xu, Ji,Zhao, Peng,Zou, Zheng,Zhu, Qingshan,&Wang, Junwu.(2020).Long-time coarse-grained CFD-DEM simulation of residence time distribution of polydisperse particles in a continuously operated multiple-chamber fluidized bed.CHEMICAL ENGINEERING SCIENCE,219,11. |
| MLA | Lan, Bin,et al."Long-time coarse-grained CFD-DEM simulation of residence time distribution of polydisperse particles in a continuously operated multiple-chamber fluidized bed".CHEMICAL ENGINEERING SCIENCE 219(2020):11. |
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