期刊文献+
任意字段
题名或关键词
题名
关键词
文摘
作者
第一作者
机构
刊名
分类号
参考文献
作者简介
基金资助
栏目信息

快速床动力学统一模型Ⅲ:高密度流化床的预报 被引量：3

A Unified Model for Fast Fluidization Dynamics-PartⅢ:Prediction of High-Density Fast-Fluidized Bed
原文传递
导出
摘要 基于模型Ⅰ、Ⅱ,本文对颗粒团聚物的受力情况进行了分析。当宏观相间摩擦力大于颗粒团聚物重力时,颗粒团聚物发生二次流化,床层进入高密度快速床状态。按摩擦力等于重力的条件确定了相间滑移自调节量,并以此对快速床分相模型进行了修正。模型很好预报了高密度快速床的上下部固含率不再随固体循环流率的增加而发生明显的变化。 Based on the fast nuidization model in previous paper,force analysis for the particle clusters was performed.When the friction force between phases exceed the weight of the particle clusters,the secondary nuidization regard with clusters will happen,which brings on the high density fast fluidization.According to the requirement of ＂friction equal weight＂,the slip velocity between the two phases will be auto-adjusted,which leads to modifications for the original model. The model predictions for high density fast fluidized bed agree well with the experimental observations in the literature,i.e.the hold up in the bed will not change obviously with increasing solid flux.
作者 张楚 林郁郁 章明川
机构地区 上海交通大学机械与动力工程学院
出处 《工程热物理学报》 EI CAS CSCD 北大核心 2013年第1期177-180,共4页 Journal of Engineering Thermophysics
基金 国家自然科学基金资助项目(No.50676062)
关键词 高密度快速床 颗粒团聚物 二次流化 相间摩擦力 滑移自调节 high-density fast-fluidized-bed particle cluster secondary fluidization phase friction slip auto-adjustment
分类号 TQ021 [化学工程]
  • 相关文献

参考文献9

  • 1Bi H T, Zhu J. Static Instability Analysis of Circulating Fluidized Bed and the Concept of High Density Risers [J]. AIChE J 1993, 39:1272- 1280.
  • 2Wei F, Lin H, Jin Y, Yu Z. Profiles of Particle Velocity and Solids Fraction in a High Density Riser [J]. Powder Technol, 1998, 100:183-189.
  • 3Bai D, Kato K. Generalized Correlations of Solids Holdups at Dense and Dilute Regions of Circulating Fluidized Beds [C]// Proceedings 7^th SCEJ Symp on CFB. Tokyo, Japan. 1994:137-144.
  • 4章明川,张楚,林郁郁,徐旭常.快速床动力学统一模型—由A型噎塞向C型噎塞的连续转变Ⅰ:模型构建[J].工程热物理学报,2011,32(5):895-899. 被引量：5
  • 5张楚,林郁郁,章明川.快速床动力学统一模型Ⅱ:上部稀相与下部浓相固含率的预报[J].工程热物理学报,2012,33(4):694-698. 被引量：6
  • 6Yang W C. Criteria for Choking in Vertical Pneumatic Conveying Lines [J]. Powder Technology, 1983, 35: 143- 150.
  • 7Basu P, Fraser S A. Circulating Fluidized Bed Boilers: Design and Operations [M]. Boston: The Butterworth- Heinemann Press, 1991.
  • 8Davison J F, Harrison D. Fluidized Particles [M]. Cam- bridge: The Cambridge University Press, 1963.
  • 9A S Issangya, D Bai, H T Bi, K SLim, J Zhu, J R Grace. Suspension Densities in a High-Density Circulating Flu- idized Bed Riser [J]. Chemical Engineering Science, 1999, 54:5451 -5460.

二级参考文献24

  • 1李佑楚 陈丙瑜.快速流态化的研究[J].化工冶金,1980,(4):20-20.
  • 2Leung L S. Vertical Pneumatic Conveying: a Flow Regime Diagram and a Review of Choking Versus Non-Choking Systems [J]. Powder Technoi, 1980, 25(2): 185-190.
  • 3Konrad K. Dense-Phase Pneumatic Conveying: a Review [J]. Powder Technol, 1986, 49(1): 1-35.
  • 4Bi H T, Grace J R, Zhu J X. On Types of Choking in Vertical Pneumatic Systems [J]. Int. J. Multiphase Flow, 1993, 19(6): 1077-1092.
  • 5Yang W C. A Mathematical Definition of Choking Phe- nomenon and a Mathematical Model for Predicting Chok- ing Velocity and Choking Voidage [J] . AIChE J, 1975, 21(5): 1013-1015.
  • 6Yang W C. Criteria for Choking in Vertical Pneumatic Conveying Lines [J]. Powder Technology, 1983, 35(2): 143 -150.
  • 7Bi H T, Fan L S. Regime Transitions in Gas-Solid Circu- lating Fluidized Beds [C]//AIChE Annual Meeting(1991). LA: 1991:17 -22.
  • 8Xu Guangwen, Nomura Kousuke, Gao Shiqiu, et al. More Dmdamentals of Dilute Suspension Collapse and Chok- ing for Vertical Conveying Systems [J]. AIChE J, 2001, 47(10): 2177-2196.
  • 9Yousfi Y, Gau G. Aerodynamique de l'ecoulement ver- tical de suspensions coneentrees gaz-solides-I, regimes d'ecoulement et stablilite aerodynamique [J]. Chem. Eng. Sci, 1974, 29(9): 1939-1946.
  • 10Richardson J F, Zaki W N. Sedimentation and Fluidiza- tion: Part Ⅰ[J]. Trans. Inst. Chem. Eng. 1954, 32:259-267.

共引文献7

同被引文献23

  • 1Basu P, Fraser S A. Circulating Fluidized Bed Boilers: Design and Operations [M]. The Butterworth-Heinemann Press, Boston, 1991.
  • 2He Y, Deen N G, ven Annaland S, et al. Gas-Solid Tur- bulent Flow in a Circulating Fluidized Bed Riser: Exper- imental and Numerical Study of Monodisperse Particle System [J]. Ind Eng Chem Res, 2009, 48:8091 8097.
  • 3Davidson J F, Harrison D. Fluidised Particles [M]. The University Press, Cambridge, 1963.
  • 4YANG N, WANG W, GE W, et al. Simulation of Het- erogeneous Structure in a Circulating Fluidized Bed Riser by Combining the Two-Fluid Model With the EMMs Ap- proach [J]. Ind Eng Chem Res, 2004, 43:5548- 5561.
  • 5YANG W C. A Mathematical Definition of Choking Phe- nomenon and a Mathematical Model for Predicting Chok- ing Velocity and Choking Volume Fraction [J]. AIChE J, 1975, 21:1013-1015.
  • 6YANG W C. Criteria for Choking in Vertical Pneumatic Conveying Lines [J]. Powder Technology, 1983, 35: 143- 150.
  • 7BI H T, Grace J R, ZHU J X. Types of Choking in Verti- cal Pneumatic Systems [J]. Int J Multiphase Flow, 1993, 19:1077-1092.
  • 8XU G, Nomura K, Gao S, et al. More Fundamentals of Di- lute Suspension Collapse and Chocking for Vertical Con- veying Systems [J]. AIChE J, 2001, 47:2177-2196.
  • 9Harris A T, Davidson J F, Thorpe R B. The Prediction of Particle Cluster Properties in the Near Wall Region of a Vertical Riser [J]. Powder Technology, 2002, 127:128- 143.
  • 10Ouyang S, Potter O E. Consistency of Circulating Flu- idized Bed Experimental Data [J]. Ind Eng Chem Res, 1993, 32:1041-1045.

引证文献3

二级引证文献3

工程热物理学报
2013年 第1期

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部