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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
发表期刊CANADIAN JOURNAL OF CHEMICAL ENGINEERING
卷号90期号:4页码:1027-1032
摘要

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

文章类型Article
关键词Hydrodynamics Circulating Fluidised Bed Low-density Particles Modelling
WOS标题词Science & Technology ; Technology
DOI10.1002/cjce.20618
研究领域[WOS]Engineering
关键词[WOS]RADIAL VOIDAGE PROFILES ; FLOW STRUCTURE ; SOLIDS ; RISERS ; ENTRAINMENT ; FREEBOARD ; REGIMES
收录类别SCI
语种英语
WOS类目Engineering, Chemical
WOS记录号WOS:000305994200029
引用统计
被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.giec.ac.cn/handle/344007/10138
专题中国科学院广州能源研究所
作者单位1.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
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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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