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Hydrodynamic behavior of magnetized fluidized beds with admixtures of Geldart-B magnetizable and nonmagnetizable particles
Zhu, Quanhong1,2; Li, Hongzhong1; Zhu, Qingshan1; Li, Jun1; Zou, Zheng1
2016-12-01
Source PublicationPARTICUOLOGY
ISSN1674-2001
Volume29Issue:DECPages:86-94
Abstract

This work focuses on the hydrodynamic behavior of admixtures of Geldart-B magnetizable and non magnetizable particles in a magnetized fluidized bed. The applied magnetic field was axial, uniform, and steady. In operating the beds, the magnetization-LAST mode was adopted under which four distinct flow regimes exist: fixed, magnetized-bubbling, partial segregation-bubbling, and total segregation-bubbling. The operational phase diagram was drawn to display-the transitions between flow regimes in an intuitive manner. Only in the magnetized-bubbling regime could the magnetic field reduce the bubble size and improve fluidization quality. In the segregation-bubbling regimes, fluidization quality deteriorated as segregation developed. The segregation of the binary mixture was quantitatively studied by observing pressure drops in the local bed. Reasons for the improvement in fluidization quality as well as the occurrence of segregation were analyzed. Furthermore, the flow regime transition under magnetization-LAST operation mode was different from that under magnetization-FIRST mode. The magnetically stabilized bed (MSB) flow regime, which could be easily created under magnetization-FIRST mode, could no longer be achieved under magnetization-LAST mode. With the admixture, the MSB was proved to be a metastable equilibrium state. Under the magnetization-LAST mode, the admixture bed reached directly the stable equilibrium state bubbling with segregation. (C) 2016 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.

KeywordMagnetized Fluidized Bed Admixture Magnetization-last Flow Regime Hydrodynamic Segregation
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.partic.2015.12.010
Indexed BySCI
Language英语
WOS KeywordMAGNETICALLY STABILIZED BEDS ; FIELD ASSISTED FLUIDIZATION ; MAGNETOFLUIDIZED BEDS ; UNIFIED APPROACH ; MIXTURES ; SIMULATION ; VELOCITY ; PURE ; FLOW
WOS Research AreaEngineering ; Materials Science
WOS SubjectEngineering, Chemical ; Materials Science, Multidisciplinary
Funding OrganizationNational Natural Science of China(21325628) ; National Natural Science Foundation of China(91334108 ; U1462128)
WOS IDWOS:000389114700008
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/21681
Collection多相复杂系统国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multi Phase Complex Syst, POB 353, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhu, Quanhong,Li, Hongzhong,Zhu, Qingshan,et al. Hydrodynamic behavior of magnetized fluidized beds with admixtures of Geldart-B magnetizable and nonmagnetizable particles[J]. PARTICUOLOGY,2016,29(DEC):86-94.
APA Zhu, Quanhong,Li, Hongzhong,Zhu, Qingshan,Li, Jun,&Zou, Zheng.(2016).Hydrodynamic behavior of magnetized fluidized beds with admixtures of Geldart-B magnetizable and nonmagnetizable particles.PARTICUOLOGY,29(DEC),86-94.
MLA Zhu, Quanhong,et al."Hydrodynamic behavior of magnetized fluidized beds with admixtures of Geldart-B magnetizable and nonmagnetizable particles".PARTICUOLOGY 29.DEC(2016):86-94.
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