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Experimental and theoretical study on the fluidization behaviors of iron powder at high temperature
Alternative TitleChem. Eng. Sci.
Lei, Chao1,2; Zhu, Qingshan1; Li, Hongzhong1
2014-10-18
Source PublicationCHEMICAL ENGINEERING SCIENCE
ISSN0009-2509
Volume118Issue:OCT.Pages:50-59
AbstractFluidization behavior of iron powder in N-2 was investigated in detail under the fluidization gas velocity of 2-10 u(mfo) at 600-800 degrees C. Four types of fluidization behaviors, i.e., stable fluidization, agglomerating fluidization, gradual defluidization and fast defluidization, were expressly described and distinguished, instead of only two types (i.e., fluidization and defluidization) reported in the literature. Further investigation revealed that the occurrence of different types of fluidization behaviors was caused by the differences in the formation and growth of agglomerates under different fluidization conditions. Particularly, gradual or fast defluidization was caused by the continuous formation and growth of agglomerates in the whole process. However, if formation and growth of agglomerates could Finally reach equilibrium, agglomerating fluidization would occur without defluidization. Moreover, a theoretical model was proposed based on the force balance analyses between the collision force and the cohesive force. Through the analyses of the formation and growth of agglomerates, the occurrence of four fluidization behaviors was well explained, especially for the agglomerating fluidization and gradual defluidization. (C) 2014 Elsevier Ltd. All rights reserved.; Fluidization behavior of iron powder in N-2 was investigated in detail under the fluidization gas velocity of 2-10 u(mfo) at 600-800 degrees C. Four types of fluidization behaviors, i.e., stable fluidization, agglomerating fluidization, gradual defluidization and fast defluidization, were expressly described and distinguished, instead of only two types (i.e., fluidization and defluidization) reported in the literature. Further investigation revealed that the occurrence of different types of fluidization behaviors was caused by the differences in the formation and growth of agglomerates under different fluidization conditions. Particularly, gradual or fast defluidization was caused by the continuous formation and growth of agglomerates in the whole process. However, if formation and growth of agglomerates could Finally reach equilibrium, agglomerating fluidization would occur without defluidization. Moreover, a theoretical model was proposed based on the force balance analyses between the collision force and the cohesive force. Through the analyses of the formation and growth of agglomerates, the occurrence of four fluidization behaviors was well explained, especially for the agglomerating fluidization and gradual defluidization. (C) 2014 Elsevier Ltd. All rights reserved.
KeywordFluidized Bed Iron Powder Defluidization Agglomerates Modeling
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.ces.2014.07.034
URL查看原文
Indexed BySCI
Language英语
WOS KeywordEXPERIMENTAL-VERIFICATION ; DEFLUIDIZATION BEHAVIOR ; AGGLOMERATION ; BED ; PARTICLES ; DESTABILIZATION ; MODEL ; COAL ; GAS
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000341412000006
Citation statistics
Cited Times:19[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/11646
Collection研究所(批量导入)
Affiliation1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Lei, Chao,Zhu, Qingshan,Li, Hongzhong. Experimental and theoretical study on the fluidization behaviors of iron powder at high temperature[J]. CHEMICAL ENGINEERING SCIENCE,2014,118(OCT.):50-59.
APA Lei, Chao,Zhu, Qingshan,&Li, Hongzhong.(2014).Experimental and theoretical study on the fluidization behaviors of iron powder at high temperature.CHEMICAL ENGINEERING SCIENCE,118(OCT.),50-59.
MLA Lei, Chao,et al."Experimental and theoretical study on the fluidization behaviors of iron powder at high temperature".CHEMICAL ENGINEERING SCIENCE 118.OCT.(2014):50-59.
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