Experimental study on flow characteristics of liquid-solid circulating fluidized bed with central pulsating liquid flow

被引：8

作者：

Song, Yangfan ^{[1
]}

Yu, Qi ^{[1
]}

Chen, Hongwei ^{[1
]}

Hao, Wenwen ^{[1
]}

Zhu, Lou ^{[1
]}

Wang, Xinxin ^{[1
]}

Zhao, Chao ^{[1
]}

机构：

[1] North China Elect Power Univ, Key Lab Power Stn Energy Transfer Convers & Syst, Minist Educ, Baoding 071003, Hebei, Peoples R China

来源：

POWDER TECHNOLOGY | 2022年 / 411卷

基金：

中国国家自然科学基金;

关键词：

Central pulsating liquid flow; Liquid -solid circulating fluidized bed; Experimental study; Flow characteristics; Conductivity probe; MASS-TRANSFER COEFFICIENT; WASTE-WATER TREATMENT; TERMINAL VELOCITY; DRAG COEFFICIENT; HYDRODYNAMICS; BIOREACTOR;

D O I：

10.1016/j.powtec.2022.117925

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A novel liquid-solid circulating fluidized bed with central pulsating liquid flow has been proposed and con-structed. The central sinusoidal pulsating liquid flow was introduced to improve the interphase transfer effi-ciency between liquid and solids phases. The hydrodynamic characteristics in the riser were investigated experimentally using the acrylic particles and glassbeads. The axial solids holdup and cross-sectional solids holdup distributions under different operating conditions, which directly related to the contact and mixing effect between the liquid and solids phases, were studied by conductivity probes and waveform analysis method. It was concluded that compared with the conventional liquid-solid circulating fluidized bed, the introduction of the central pulsating liquid flow increased the turbulence in the bed within the experimental range, enhanced the radial movement of the particles, and improved the mixing degree and transfer efficiency between the liquid and solids phases.

引用

页数：14

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