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Experimental study on gas-solid mass transfer in circulating fluidized beds
Alternative TitleChin. J. Chem. Eng.
Wang, LN; Zhang, L; Jin, DJ; Li, JH
2002-02-01
Source PublicationCHINESE JOURNAL OF CHEMICAL ENGINEERING
ISSN1004-9541
Volume10Issue:1Pages:70-76
AbstractThis study is devoted to gas-solid mass transfer behavior in heterogeneous two-phase flow. Experiments were carried out in a cold circulating fluidized bed of 3.0m in height and 72mm in diameter with naphthalene particles. Axial and radial distributions of sublimated naphthalene concentration in air were measured with an on line concentration monitoring system HP GC-MS. Mass transfer coefficients were obtained under various operating conditions, showing that heterogeneous flow structure strongly influences the axial and radial profiles of mass transfer coefficients. In the bottom dense region, mass transfer rate is high due to intensive dynamic behavior and higher relative slip velocity between gas and clusters. In the middle transition region and the upper dilute region, as a result of low mass transfer driving force and the influence of flow structure, mass transfer rate distribution becomes non-uniform. In conclusion, among the operating parameters influencing mass transfer coefficients, the superficial gas velocity is the most important factor and the solid circulation rate should be also taken into account.; This study is devoted to gas-solid mass transfer behavior in heterogeneous two-phase flow. Experiments were carried out in a cold circulating fluidized bed of 3.0m in height and 72mm in diameter with naphthalene particles. Axial and radial distributions of sublimated naphthalene concentration in air were measured with an on line concentration monitoring system HP GC-MS. Mass transfer coefficients were obtained under various operating conditions, showing that heterogeneous flow structure strongly influences the axial and radial profiles of mass transfer coefficients. In the bottom dense region, mass transfer rate is high due to intensive dynamic behavior and higher relative slip velocity between gas and clusters. In the middle transition region and the upper dilute region, as a result of low mass transfer driving force and the influence of flow structure, mass transfer rate distribution becomes non-uniform. In conclusion, among the operating parameters influencing mass transfer coefficients, the superficial gas velocity is the most important factor and the solid circulation rate should be also taken into account.
KeywordMass Transfer Circulating Fluidized Bed Gas-solid Heterogeneous Flow
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
URL查看原文
Indexed BySCI
Language英语
WOS KeywordMULTI-PARTICLE SYSTEMS ; TRANSPORT PHENOMENA ; MODEL
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000174602500010
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/5650
Collection研究所(批量导入)
AffiliationChinese Acad Sci, Inst Proc Engn, Multiphase React Lab, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Wang, LN,Zhang, L,Jin, DJ,et al. Experimental study on gas-solid mass transfer in circulating fluidized beds[J]. CHINESE JOURNAL OF CHEMICAL ENGINEERING,2002,10(1):70-76.
APA Wang, LN,Zhang, L,Jin, DJ,&Li, JH.(2002).Experimental study on gas-solid mass transfer in circulating fluidized beds.CHINESE JOURNAL OF CHEMICAL ENGINEERING,10(1),70-76.
MLA Wang, LN,et al."Experimental study on gas-solid mass transfer in circulating fluidized beds".CHINESE JOURNAL OF CHEMICAL ENGINEERING 10.1(2002):70-76.
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