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循环喷动二维流化床流动的特性研究

Hydrodynamics of Spout-Fluidized Bed with Draft Tube

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【作者】 李宝霞王士才张济宇

【Author】 LI Bao-xia 1, WANG Shi-cai 1, ZHANG Ji-yu 2 (1.Department of Chemical Engineering of Qingdao University,Shandong Qingdao 266071, China; 2.Department of Chemical Engineering of Fuzhou University,Fujian Fuzhou 350002, China)

【机构】 青岛大学化工系福州大学化工系 山东青岛266071山东青岛266071福建福州350002

【摘要】 分析了循环喷动流化床中固体的循环机理 ,考察了固体循环速率随操作参数和物性参数的变化规律 ,给出可用于设计和操作的综合考虑几何参数、操作参数及物性参数对固体循环流动影响的固体循环速率的关联式及计算颗粒喷射高度的关联式

【Abstract】 A 200×50×1 450mm two-dimentional spout-fluidized bed with a central draft tube was used to study the effect of geometry and operating parameters as well as physical properties of material on solids circulation rate. Four different solids and draft tube sizes were used in this study. With increasing gas feed rate,the gap between the draft tube inlet and conical distributor( R ), the draft tube area and the solid circulation rate will be increased. The draft tube hight and the solid partical loading has no effect on solids circulation rate.Two quantitative correlation,derived from the concept of the gravity flow of particals through the gap( R ) and consisting of geometry,operating,as well as material parameter,were proposed for predicting the solids circulation rate and the partical jet hight of this type of bed.

【基金】 国家自然科学基金项目 (2 94 76 2 6 2 )
  • 【文献出处】 化学工业与工程 ,Chemical Industry and Engineering , 编辑部邮箱 ,2002年05期
  • 【分类号】TQ051
  • 【被引频次】2
  • 【下载频次】75
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