欢迎访问过程工程学报, 今天是

›› 2003, Vol. 3 ›› Issue (2): 0-0.

• 2 •    

X射线投影成像法测量气固流化床中的固含分布 — (II) 应用及误差分析

张志攀，罗国华，魏飞，汪展文   

  1. 清华大学化工系，北京 100084
  • 出版日期:2003-04-20 发布日期:2003-04-20

Minimum Spouting Velocity of Multi-component Particle Mixtures in a Slot-rectangular Spouted Bed

WANG Bao-qun, LUO Bao-lin   

  1. Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
  • Online:2003-04-20 Published:2003-04-20

PDF

摘要： 通过标准化实验对X射线投影成像系统的误差进行了分析，进而应用该测量系统对提升管、纳米颗粒聚团床、鼓泡床和大直径下行床入口区的固含分布进行了测量，结果说明本测量方法可较准确、无接触测量气固两相流体系的固含分布.

关键词: X光成像, 流化床, 固含分布

Abstract: This paper is focused on the application of the portable X-ray photography technique to measurement of the radial and axial profiles of solid concentration in a gas–solids riser, a pilot-plant-scale downer, and a nano- agglomerate fluidized bed of carbon nanotubes. Twenty to thirty images with 100~200 ns X-ray pulses were processed to get a time-averaged concentration profile. Results show that this technique is a promising non-intrusive method to get time-averaged solid concentration profiles in gas–solids two phase flow systems.

Key words: slot-rectangular spouted bed, multi-size particles, minimum spouting velocity

中图分类号: