Fluidization characteristics in a vibrated gas-fluidized bed of Geldart D particles based on the collaborative measurement by impact force sensor and high-speed image analysis system

被引：6
作者：
Wang, Song [1 ,2 ]
Wu, Weiwei [2 ]
Yang, Xuliang [1 ,2 ]
Zhao, Yuemin [2 ]
机构：
[1] China Univ Min & Technol, Key Lab Coal Proc & Efficient Utilizat, Minist Educ, Xuzhou 221116, Jiangsu, Peoples R China
[2] China Univ Min & Technol, Sch Chem Engn & Technol, Xuzhou 221116, Jiangsu, Peoples R China
来源：
POWDER TECHNOLOGY | 2020年 / 360卷
关键词：
Geldart D type particles; Vibrated gas-fluidized bed; Impact force sensor; High-speed image; Fluidization characteristics; FINE COAL; SEPARATION; BENEFICIATION; BEHAVIOR; DENSITY; OPTIMIZATION; PERFORMANCE; QUALITY; BUBBLES; FLOW;
D O I：
10.1016/j.powtec.2019.10.090
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The fluidization characteristics of binary Geldart D type particles in a vibrated gas-fluidized bed (VGFB) were studied deploying the collaborative measurement by impact force sensor and high-speed image analysis system. The synergistic effects of the operational parameters including vibration amplitude, vibration frequency and fluidizing air velocity on the fluidization characteristics of a VGFB were studied. The changing laws of bed pressure drop and particulate impact force were analyzed and confirmed macroscopically by the high-speed dynamic images. The results showed that the fluctuation range of the signals of pressure drop and particulate impact force decreases with the increase of fluidizing air velocity and bed height due to the energy dissipation of vibration and the increase of bed expansion ratio. Furthermore, the effects of bubbling behavior on the pressure drop and particulate impact force were revealed by the combination of the frequency domain analysis of signals and the high-speed dynamic image analysis. (C) 2019 Elsevier B.V. All rights reserved.
引用
收藏
页码：872 / 881
页数：10
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