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CLUSTER STRUCTURE IN A CIRCULATING FLUIDIZED-BED
Alternative TitlePowder Technol.
ZOU, B; LI, HZ; XIA, YS; MA, XH
1994-02-01
Source PublicationPOWDER TECHNOLOGY
ISSN0032-5910
Volume78Issue:2Pages:173-178
AbstractMicrographs in a 10-m high and 90-mm ID fluidized catalytic cracking (FCC) catalyst-air fast fluidized bed were taken by a video camera provided with an optical fiber probe inserted radially into the bed to study cluster size and shape in gas-solid suspension. A computer aided (CA) particle image processing system was used to analyze images which were obtained under different superficial gas velocities and solid circulating rates at different radial positions. Cluster size and its probability density distribution were investigated and a simple model was established. A roundness factor was put forward to describe the shape of the cluster. We also discovered that clusters assembled by particles show evident fractal character both in 'shape' and 'fragmentation'. The fractal dimension of clusters at different flow patterns was found to be a function of position.; Micrographs in a 10-m high and 90-mm ID fluidized catalytic cracking (FCC) catalyst-air fast fluidized bed were taken by a video camera provided with an optical fiber probe inserted radially into the bed to study cluster size and shape in gas-solid suspension. A computer aided (CA) particle image processing system was used to analyze images which were obtained under different superficial gas velocities and solid circulating rates at different radial positions. Cluster size and its probability density distribution were investigated and a simple model was established. A roundness factor was put forward to describe the shape of the cluster. We also discovered that clusters assembled by particles show evident fractal character both in 'shape' and 'fragmentation'. The fractal dimension of clusters at different flow patterns was found to be a function of position.
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
URL查看原文
Indexed BySCI
Language英语
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:A1994NA64700011
Citation statistics
Cited Times:86[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/8007
Collection研究所(批量导入)
AffiliationCHINESE ACAD SCI,INST CHEM MET,BEIJING,PEOPLES R CHINA
Recommended Citation
GB/T 7714
ZOU, B,LI, HZ,XIA, YS,et al. CLUSTER STRUCTURE IN A CIRCULATING FLUIDIZED-BED[J]. POWDER TECHNOLOGY,1994,78(2):173-178.
APA ZOU, B,LI, HZ,XIA, YS,&MA, XH.(1994).CLUSTER STRUCTURE IN A CIRCULATING FLUIDIZED-BED.POWDER TECHNOLOGY,78(2),173-178.
MLA ZOU, B,et al."CLUSTER STRUCTURE IN A CIRCULATING FLUIDIZED-BED".POWDER TECHNOLOGY 78.2(1994):173-178.
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