FLOW REGIMES AND VERTICAL SOLIDS CONVEYING IN A SPOUT-FLUID BED WITH A DRAFT TUBE

被引：30
|
作者：
Nagashima, Hiroshi [1 ]
Ishikura, Toshifumi [1 ]
Ide, Mitsuharu [1 ]
机构：
[1] Fukuoka Univ, Dept Chem Engn, Jonan Ku, Fukuoka 8140180, Japan
来源：
CANADIAN JOURNAL OF CHEMICAL ENGINEERING | 2011年 / 89卷 / 02期
关键词：
spout-fluid bed; draft tube; flow regime; pressure fluctuation; solids loading ratio; PRESSURE-FLUCTUATIONS; COARSE PARTICLES; CIRCULATION RATE; VELOCITY; HYDRODYNAMICS; CHOKING; SYSTEMS; ANNULUS;
D O I：
10.1002/cjce.20403
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Pressure fluctuation data were obtained in a semi-cylindrical spout-fluid bed with draft tube, and statistical analyses of them were employed to recognise flow regimes. Also, the effects of spouting-gas and auxiliary-gas velocities, and length of entrainment zone on solids loading ratio in a draft tube were examined. As a result, five flow regimes appeared by changing spouting-gas and auxiliary-gas velocities and it was found that the simplest method to determine flow regime is to measure pressure fluctuations in a draft tube. Moreover, solids loading ratio could be controlled flexibly by auxiliary-gas velocity and length of entrainment zone.
引用
收藏
页码：264 / 273
页数：10
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