Study on flow characteristics of bidirectional sinusoidal liquid pulsed gas-liquid-solid multiphase fluidized bed

被引：9

作者：

Chen, Hongwei ^{[1
]}

Zhu, Lou ^{[1
]}

Song, Yangfan ^{[1
]}

Liu, Zi ^{[1
]}

Wang, Xinxin ^{[1
]}

Zhao, Chao ^{[1
]}

Lu, Xiaofeng ^{[2
]}

机构：

[1] North China Elect Power Univ, Key Lab Condit Monitoring & Control Power Plant Eq, Minist Educ, Baoding 071003, Hebei, Peoples R China

[2] Chongqing Univ, Key Lab Low grade Energy Utilizat Technol & Syst, Minist Educ, Chongqing 400044, Peoples R China

来源：

CHEMICAL ENGINEERING RESEARCH & DESIGN | 2022年 / 183卷

基金：

中国国家自然科学基金;

关键词：

Liquid pulsed fluidized bed; Bidirectional sinusoidal velocity; Gas-liquid-solid fluidized bed; Numerical simulation; Flow characteristics; MASS-TRANSFER; TURBULENCE MODELS; CFD SIMULATION; 3-PHASE; HYDRODYNAMICS; FORCES;

D O I：

10.1016/j.cherd.2022.05.001

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Gas-liquid-solid three-phase fluidized bed has been widely used in chemical, bio-technology and environmental industries for its advantages of large inter-phase contact area, high heat/mass transfer efficiency and intense reaction process. In this work, the bidirectional sinusoidal liquid pulsed GLS fluidized bed was proposed to improve the in-terphase relative velocity and reaction efficiency. The effects of particle properties and pulsed liquid amplitude/frequency on the flow characteristics were studied by numerical simulations and experiments. In a complete circulation period, the average axial solids holdup is larger near the middle region of the fluidized bed and gradually decreases along the upper and lower inlets. With the increase of pulsation amplitude or period, the axial average gas holdup distribution uniformity and the liquid-solid relative velocity increase significantly. Compared with the conventional upward gas-liquid-solid fluidized bed, the bidirectional fluidized bed can further improve the liquid-solid relative velocity and re-action efficiency. The obtained studies have important implications for better design, scale-up and operation of gas-liquid-solid multiphase fluidization systems. (c) 2022 Institution of Chemical Engineers. Published by Elsevier Ltd. All rights reserved.

引用

页码：104 / 117

页数：14

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