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A hydrodynamic model of a circulating fluidised bed with low-density particles
Miao, Qi1; Zhu, Jesse1; Barghi, Shahzad1; Wu, Chuangzhi2; Yin, Xiuli2; Zhou, Zhaoqiu2
2012-08-01
Source PublicationCANADIAN JOURNAL OF CHEMICAL ENGINEERING
Volume90Issue:4Pages:1027-1032
Abstract

In this study, a two-dimensional mathematical model was developed considering the hydrodynamic behaviour of a circulating fluidised bed biomass gasifier (CFBBG), which is also applicable for other low-density particles. In the modelling, the CFB riser was divided into two regions: a dense region at the bottom and a dilute region at the top of the riser. Kunii and Levenspiel's [Kunii and Levenspiel, Powder Technol. 61, 193-206 (1990)] model was adopted to express the vertical solids distribution with some other assumptions. Radial distributions of bed voidage were taken into account in the upper zone by using Zhang et al.'s [Zhang et al., Chem. Eng. Sci. 46(12), 3045-3052 (1991)] correlation. For model validation purposes, a cold model CFB was employed, in which sawdust was transported with air as the fluidising agent. The column is 10?m in height and 280?mm in diameter, and is equipped with pressure transducers to measure axial pressure profile and with a reflective optical fibre probe to measure local solids holdup. A satisfactory agreement between the model predictions and experimental data was found. (C) 2011 Canadian Society for Chemical Engineering

SubtypeArticle
KeywordHydrodynamics Circulating Fluidised Bed Low-density Particles Modelling
WOS HeadingsScience & Technology ; Technology
DOI10.1002/cjce.20618
WOS Subject ExtendedEngineering
WOS KeywordRADIAL VOIDAGE PROFILES ; FLOW STRUCTURE ; SOLIDS ; RISERS ; ENTRAINMENT ; FREEBOARD ; REGIMES
Indexed BySCI
Language英语
WOS SubjectEngineering, Chemical
WOS IDWOS:000305994200029
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/10138
Collection中国科学院广州能源研究所
Affiliation1.Univ Western Ontario, Particle Technol Res Ctr, London, ON N6A 5B9, Canada
2.Chinese Acad Sci, CAS Key Lab Renewable Energy & Gas Hydrate, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China
Recommended Citation
GB/T 7714
Miao, Qi,Zhu, Jesse,Barghi, Shahzad,et al. A hydrodynamic model of a circulating fluidised bed with low-density particles[J]. CANADIAN JOURNAL OF CHEMICAL ENGINEERING,2012,90(4):1027-1032.
APA Miao, Qi,Zhu, Jesse,Barghi, Shahzad,Wu, Chuangzhi,Yin, Xiuli,&Zhou, Zhaoqiu.(2012).A hydrodynamic model of a circulating fluidised bed with low-density particles.CANADIAN JOURNAL OF CHEMICAL ENGINEERING,90(4),1027-1032.
MLA Miao, Qi,et al."A hydrodynamic model of a circulating fluidised bed with low-density particles".CANADIAN JOURNAL OF CHEMICAL ENGINEERING 90.4(2012):1027-1032.
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