English

应用科学学报 ›› 1999, Vol. 17 ›› Issue (3): 349-354.

• 论文 • 上一篇    下一篇

磁场对流化床中气泡的湮灭作用

归柯庭, 施明恒   

  1. 东南大学
  • 收稿日期:1998-03-10 修回日期:1998-07-24 出版日期:1999-09-30 发布日期:1999-09-30
  • 基金资助:
    国家自然科学基金资助项目(59478021)

The Effects of a Magnetic Field on the Eliminating Bubbles in the Fluidized Bed

GUI KETING, SHI MINGHENG   

  1. Department of Power Engineering, Southeast University, Nanjing 210096
  • Received:1998-03-10 Revised:1998-07-24 Online:1999-09-30 Published:1999-09-30

PDF

92

被引次数

14

摘要： 分析磁流化床中作用在颗粒表面的磁应力,阐述磁场消除流化床中气泡的物理机理.对用外加磁场消除流化床中的气泡作了实验研究,证实磁场除了能抑止气泡、拓宽散式流化的操作范围外,还有消除气泡,使流化床从聚式流化转变为散式流化的功能.

关键词: 流化床, 磁场, 气泡

Abstract: Through analysing the magnetic stress tensor which exerts on the surface of particles, the reason of eliminating bubbles in the fluidized bed with a magnetic field is explained. An experimental research of removing bubbles in the fluidized bed with a magnetic field is carried out and it is shown that the magnetic field can not only check the bubbles and widen the range of the velocity of the particulate fluidization, but also eliminate the bubbles and change the aggregative fluidization into the particulate one.

Key words: fluidized beds, magnetic field, bubbles