首页|Segregation of binary particles in gas-solid fluidized bed

Segregation of binary particles in gas-solid fluidized bed

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Particle segregation and mixing behavior play a crucial role in industrial processes.This study investi-gates the saturated jetsam fraction,which indicates the maximum capacity of flotsam to entrain jetsam,in an initially separated binary fluidized bed with particle size differences.According to the value of saturated jetsam fraction,three distinct regimes—segregation,mixing,and an intermediate regime—are identified.Moreover,intrigu-ing relationships between the saturated jetsam fraction and superficial gas velocity are observed,exhibiting monotonic trends in both the segregation and mixing regimes,while a unique volcano-shaped curve in the intermediate regime.Additionally,a comprehensive entrainment model based on two-fluid model elucidates the observed phenomena,emphasizing the significance of mixing behavior in fluidized layer on the saturated jetsam fraction.This work offers potential insights for evaluating segregation in industrial applications.

fluidized bedsegregationbinarybubblesentrainment

Yaxiong Yu、Feng Lu、Xuan He、Fei Wei、Chenxi Zhang

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Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology,Department of Chemical Engineering,Tsinghua University,Beijing 100084,China

School of Chemical Engineering and Technology,Xi'an Jiaotong University,Xi'an 710049,China

Ordos Laboratory,Ordos 017010,China

Institute for Carbon Neutrality,Tsinghua University,Beijing 100084,China

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National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaBeijing Nova ProgramKey Research and Development Program of Inner Mongolia and OrdosOrdos-Tsinghua Innovative & Collaborative Research Program in Carbon Neutrality(Ordos Laboratory)

223081872220818622278238222380042022118

2024

10.1007/s11705-024-2426-0

化学科学与工程前沿
高等教育出版社

化学科学与工程前沿

CSTPCDEI
影响因子：0.172
ISSN：2095-0179
年,卷(期)：2024.18(6)