Effect of the novel combined internal devices on gas-solid flow behavior in spouted beds

被引：3

作者：

Guo, Rong ^{[1
]}

Wu, Feng ^{[1
]}

Che, Xinxin ^{[1
]}

Zhang, Yushan ^{[1
]}

Mao, Jiaxin ^{[1
]}

机构：

[1] Northwest Univ, Sch Chem Engn, Xian 710069, Peoples R China

来源：

CHEMICAL ENGINEERING RESEARCH & DESIGN | 2023年 / 191卷

基金：

中国国家自然科学基金;

关键词：

Multi-jet axial swirl blade spouted; bed; Gas-solid flow; Structure optimization; Numerical simulate; COMPUTATIONAL FLUID-DYNAMICS; SEMIDRY FGD PROCESS; BIOMASS GASIFICATION; HEAT-TRANSFER; HYDRODYNAMICS; REACTOR; DESULFURIZATION; PARAMETERS; REMOVAL; SO2;

D O I：

10.1016/j.cherd.2023.02.001

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

To reduce the flow dead zone in spouted beds (SBs), a novel multi-jet-axial swirl blade spouted bed (MJ-ASB SB) is proposed. Experimental verification and simulation analyses of the MJ-ASB SB, a conventional SB (CSB), and an integral multi-jet spout-fluidized bed (IMJSFB) were carried out. The simulation results showed that the combined structure resulted in more powerful turbulence, better radial mixing of particles in the spouting and annulus regions, and improved the flow-field uniformity. The intensification factor of the MJ-ASB SB was more than 20%, which was better than that of the IMJSFB, and the en-hancement factors of the gas and particle velocities were four and five times those of the IMJSFB, respectively. Optimal structural parameters were obtained by analyzing the dif-ferent structural parameters of the novel internal devices, and it was found that particle fluidization in the MJ-ASB SB was best when the height ratio xi was 3, the width ratio was 1.3 and the rotation was clockwise.(c) 2023 Institution of Chemical Engineers. Published by Elsevier Ltd. All rights reserved.

引用

页码：493 / 506

页数：14

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