CAS OpenIR
Modeling of segregation inmagnetized fluidized bed with binary mixture of Geldart-B magnetizable and nonmagnetizable particles
Zhu, Quanhong1,2; Li, Hongzhong1; Zhu, Qingshan1,3; Huang, Qingshan1,2
2018-06-01
Source PublicationCHINESE JOURNAL OF CHEMICAL ENGINEERING
ISSN1004-9541
Volume26Issue:6Pages:1412-1422
Abstract

For the magnetized fluidized bed (MFB) with the binary mixture of Geldart-B magnetizable and nonmagnetizable particles, the magnetically induced segregation between these two kinds of particles occurs at high magnetic field intensities (H), leading to the deterioration of the fluidization quality. The critical intensity (H-ms) above which such segregation commences varies with the gas velocity (U-g). This work focuses on establishing a segregation model to theoretically derive the H-ms-Ug relationship. In a magnetic field, the magnetizable particles for magglomerates. The magnetically induced segregation in essence refers to the size segregation of the binary mixture of agglomerates and nonmagnetizable particles. Consequently, the segregation model was established in two steps: first, the size of agglomerates (dA) was calculated by the force balance model; then, the Hms-Ug relationship was obtained by substituting the expression of dA into the basic size segregation model for binary mixtures. As per the force balance model, the cohesive and collision forces were 1-2 orders of magnitude greater than the other forces exerted on the agglomerates. Therefore, the balance between these two forces largely determined dA. The calculated dA increased with increasing H and decreasing U-g, agreeing qualitatively with the experimental observation. The calculated H-ms-U-g relationship agreed reasonably with the experimental data, indicating that the present segregation model could predict well the segregation behavior in the MFB with the binary mixture. (C) 2018 The Chemical Industry and Engineering Society of China, and Chemical Industry Press. All rights reserved.

KeywordMagnetized Fluidized Bed Binary Mixture Segregation Model Agglomerate Force Balance
DOI10.1016/j.cjche.2017.12.011
Language英语
WOS KeywordMagnetically Stabilized Beds ; Cohesive Particles ; Hydrodynamic Characteristics ; Ferromagnetic Particles ; Numerical-simulation ; Flow Behavior ; Field ; Admixture ; Powders ; State
Funding ProjectNational Natural Science Foundation of China[21325628] ; Major Research Plan of the National Natural Science Foundation of China[91334108] ; Scientific Instrument Developing Project of the Chinese Academy of Sciences[YZ201641]
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
Funding OrganizationNational Natural Science Foundation of China ; Major Research Plan of the National Natural Science Foundation of China ; Scientific Instrument Developing Project of the Chinese Academy of Sciences
WOS IDWOS:000440837100020
PublisherCHEMICAL INDUSTRY PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/25419
Collection中国科学院过程工程研究所
Corresponding AuthorLi, Hongzhong; Zhu, Qingshan
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhu, Quanhong,Li, Hongzhong,Zhu, Qingshan,et al. Modeling of segregation inmagnetized fluidized bed with binary mixture of Geldart-B magnetizable and nonmagnetizable particles[J]. CHINESE JOURNAL OF CHEMICAL ENGINEERING,2018,26(6):1412-1422.
APA Zhu, Quanhong,Li, Hongzhong,Zhu, Qingshan,&Huang, Qingshan.(2018).Modeling of segregation inmagnetized fluidized bed with binary mixture of Geldart-B magnetizable and nonmagnetizable particles.CHINESE JOURNAL OF CHEMICAL ENGINEERING,26(6),1412-1422.
MLA Zhu, Quanhong,et al."Modeling of segregation inmagnetized fluidized bed with binary mixture of Geldart-B magnetizable and nonmagnetizable particles".CHINESE JOURNAL OF CHEMICAL ENGINEERING 26.6(2018):1412-1422.
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