Temperature influence on minimum fluidization velocity:Complexity,mechanism,and solutions

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外文摘要：Fluidized-bed reactors are widely employed in various high-temperature industrial processes.Thus,it is crucial to understand the temperature effect on various fluidization phenomena,specifically the mini-mum fluidization velocity(Umf)that governs various aspects of fluidized bed behavior.In this study,we comprehensively analyze Umf data from the literature to unravel the complexity and underlying mech-anisms of temperature influence on this critical velocity.The research examines experimental data encompassing a wide range of temperatures,pressures,and solid particles.The analysis reveals that the influence of temperature on Umf is fundamentally determined by the relative importance of hydrody-namic forces and interparticle forces within fluidized beds and is realized by three distinctive temperature-induced changes:gas properties,bed voidage,and physiochemical characteristics of par-ticles.On this basis,an equation is derived to enable predictions of temperature influences on the minimum fluidization velocity under broad temperature conditions.

外文关键词：

High-temperature gas-solids fluidized bedsMinimum fluidization velocityHydrodynamic forcesInterparticle forcesBed voidage

作者：

Qingjin Zhang、Liangliang Fu、Guangwen Xu、Dingrong Bai

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作者单位：

Key Laboratory on Resources Chemicals and Material of Ministry of Education,Shenyang University of Chemical Technology,Shenyang 110142,China

School of Materials Science and Engineering,Shenyang University of Technology Shenyang 110142,China

School of Chemical Engineering,University of Science and Technology Liaoning,Anshan 114051,China

基金：

国家自然科学基金

项目编号：

U22A20410

出版年：

2024

DOI：

10.1016/j.partic.2023.10.008

颗粒学报(英文版)

中国颗粒学会　中国科学院过程工程研究所

颗粒学报(英文版)

CSTPCD

影响因子：0.632

ISSN：1674-2001

年,卷(期)：2024.88(5)

参考文献量17