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应用科学学报 ›› 2005, Vol. 23 ›› Issue (1): 82-85.

• 论文 • 上一篇    下一篇

确定磁流化床磁稳操作区域的理论分析与实验研究

王迎慧, 归柯庭, 施明恒   

  1. 东南大学洁净煤发电及燃烧技术教育部重点实验室, 江苏南京 210096
  • 收稿日期:2003-10-29 修回日期:2004-04-16 出版日期:2005-01-31 发布日期:2005-01-31
  • 作者简介:王迎慧(1968-),男,江苏兴化人,博士生,E-mail:w.yh.68@163.com;归柯庭(1957-),男,江苏常熟人,教授,博导,E-mail:ktgui@seu.edu.cn;施明恒(1939-),男,江苏常熟人,教授,博导,E-mail:mhshi@seu.edu.cn
  • 基金资助:
    国家自然科学基金项目(50176009)

The Analysis and Experiment of Determining the Stable Zone in a Magnetically Fluidized Bed

WANG Ying-hui, GUI Ke-ting, SHI Ming-heng   

  1. Key Laboratory of Clean Coal Power Generation and Combustion Technology of Ministry of Education, Southeast University, Nanjing 210096, China
  • Received:2003-10-29 Revised:2004-04-16 Online:2005-01-31 Published:2005-01-31

PDF

87

被引次数

6

摘要： 基于颗粒受力分析,运用流化床的基本理论,采用量纲分析法,提出磁流化床的磁稳区域主要取决于雷诺数Re、阿基米德数Ar和磁重势能比Er,并通过实验数据关联,进一步得出确定临界鼓泡流化速度与起始流化速度之比(即磁稳区域)的半经验公式.此公式与实验结果的误差小于8%,与以往文献中的数据基本吻合,这说明在一定场合下,该公式具有较好的适用性.

关键词: 压降波动, 磁稳区域, 临界鼓泡流化速度, 磁流化床

Abstract: Basing on the analysis of the forces on magnetic particles, applying the basic theory of the fluidized bed and analyzing by the dimensionless method, the paper shows that the stable zone in a magnetically fluidized bed mainly depends on Re, Ar, and Er, which are primary factors to show the fludized characteristics of the magnetically fluidized bed.A relationship to express the ratio of minimun bubbling velocity to initial fluidized velocity is obtained through the processing of experimental data.Compared with the results reported before, the relationship proves to be correct on the condition of moderate intensity of the magnetic field, and the error of all experimental and calculated data is less than 8%.

Key words: magnetically fluidized bed, stable zone, fluctuation of pressure drop, minimum bubbling velocity

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