Modeling of segregation inmagnetized fluidized bed with binary mixture of Geldart-B magnetizable and nonmagnetizable particles

doi:10.1016/j.cjche.2017.12.011

QIBEBT-IR

	Modeling of segregation inmagnetized fluidized bed with binary mixture of Geldart-B magnetizable and nonmagnetizable particles
	Zhu, Quanhong 1,2; Li, Hongzhong 1; Zhu, Qingshan 1,3; Huang, Qingshan1,2
	2018-06-01
发表期刊	CHINESE JOURNAL OF CHEMICAL ENGINEERING
ISSN	1004-9541
卷号	26 期号:6 页码:1412-1422
摘要	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.
关键词	Magnetized fluidized bed Binary mixture Segregation Model Agglomerate Force balance
DOI	10.1016/j.cjche.2017.12.011
关键词[WOS]	MAGNETICALLY STABILIZED BEDS ; COHESIVE PARTICLES ; HYDRODYNAMIC CHARACTERISTICS ; FERROMAGNETIC PARTICLES ; NUMERICAL-SIMULATION ; FLOW BEHAVIOR ; FIELD ; ADMIXTURE ; POWDERS ; STATE
语种	英语
资助项目	National 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研究方向	Engineering
项目资助者	National 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类目	Engineering, Chemical
WOS记录号	WOS:000440837100020
出版者	CHEMICAL INDUSTRY PRESS
引用统计
文献类型	期刊论文
条目标识符	http://ir.qibebt.ac.cn/handle/337004/12347
专题	中国科学院青岛生物能源与过程研究所
通讯作者	Li, Hongzhong; Zhu, Qingshan
作者单位	1.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
推荐引用方式 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.