CFD-DEM study of spout deflection behavior of cohesive particles in a spout fluidized bed

Luo, Zhan; Yue, Yuanhe; Wang, Shuai; Shen, Yansong

doi:10.1016/j.powtec.2023.118758

Cited by 5 publications

(2 citation statements)

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“…In the spouting region, the circulation ability of liquid-containing particles exceeds that of dry particles. The spout deflection in the dry particle fluidization system is more pronounced than in the liquid-containing particle fluidization system . On the one hand, the deflection of the gas spouting channel will cause particles to concentrate in the spouting region.…”

Section: Resultsmentioning

confidence: 99%

“…The spout deflection in the dry particle fluidization system is more pronounced than in the liquid-containing particle fluidization system. 46 On the one hand, the deflection of the gas spouting channel will cause particles to concentrate in the spouting region. On the other hand, channel deflection can cause more kinetic energy to be applied to particles in the annulus region, reducing the axial particle velocity in the spouting region.…”

Section: Horizontal Mixing Characteristics Of Particlesmentioning

confidence: 99%

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Quantitative Correlation Analysis of Mixing and Circulation Characteristics in a Liquid-Containing Gas–Solid Fluidized Bed Reactor under Coupled Effects of Multiple Parameters

Luan,

Feng,

Han

et al. 2024

Ind. Eng. Chem. Res.

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Liquid addition complicates the particle mixing and circulation characteristics within the liquid-containing gas−solid fluidized bed reactor, which significantly affects heat-mass transfer and chemical reaction processes and deserves an in-depth study. This work utilizes the CFD−DEM method to investigate the effects of liquid property parameters on the mixing and circulation characteristics of liquid-containing particles. Both the comprehensive effects of multiple parameters and the interactive effects among them have been considered. A heat map is used to visualize the time-averaged Lacey index for quantitative analysis. Then, the mixing and circulation mechanism in the liquid-containing particle fluidization system is proposed based on the above analysis. Changes in liquid property parameters alter particle velocity, thereby affecting convective and shear mixing and ultimately leading to significant differences in the mixing and circulation characteristics. Compared with other parameters, surface tension plays a more important role in determining the mixing and circulation characteristics. Only under higher surface tensions, liquid viscosity and liquid content show significant effects on the above characteristics. A comprehensive investigation into the mixing and circulation characteristics of the liquid-containing particle fluidization system and the elucidation of its mechanisms are essential for achieving stable fluidization within the liquid-containing gas−solid fluidized bed reactor.

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Section: Resultsmentioning

confidence: 99%

Section: Horizontal Mixing Characteristics Of Particlesmentioning

confidence: 99%