Numerical and experimental study on the particle erosion and gas–particle hydrodynamics in an integral multi-jet swirling spout-fluidized bed

doi:10.1016/j.cjche.2023.03.011

Chinese Journal of Chemical Engineering ›› 2023, Vol. 61 ›› Issue (9): 90-101.DOI: 10.1016/j.cjche.2023.03.011

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Numerical and experimental study on the particle erosion and gas–particle hydrodynamics in an integral multi-jet swirling spout-fluidized bed

Wenbin Li¹, Feng Wu¹, Liuyun Xu¹, Jipeng Sun², Xiaoxun Ma¹

1. School of Chemical Engineering, Northwest University, Xi'an 710069, China;
2. Luoyang Jianguang Special Equipment Co., Ltd, Luoyang 471003, China

Received:2022-12-24 Revised:2023-03-12 Online:2023-12-14 Published:2023-09-28
Contact: Feng Wu,E-mail:wufeng@nwu.edu.cn
Supported by:
This work is supported by the National Natural Science Foundation of China (22178286) and Shaanxi Qin Chuangyuan “scientist and engineer” team construction project (2022KXJ-041).

Numerical and experimental study on the particle erosion and gas–particle hydrodynamics in an integral multi-jet swirling spout-fluidized bed

Wenbin Li¹, Feng Wu¹, Liuyun Xu¹, Jipeng Sun², Xiaoxun Ma¹

1. School of Chemical Engineering, Northwest University, Xi'an 710069, China;
2. Luoyang Jianguang Special Equipment Co., Ltd, Luoyang 471003, China

通讯作者: Feng Wu,E-mail:wufeng@nwu.edu.cn
基金资助:
This work is supported by the National Natural Science Foundation of China (22178286) and Shaanxi Qin Chuangyuan “scientist and engineer” team construction project (2022KXJ-041).

Abstract

Abstract: In this paper, using the computational fluid dynamics based on Euler Lagrange and the commercial software Barracuda VR, the gas–particle hydrodynamics and the erosion of particles on the inner wall and internal components of the spouted bed in the integrated multi-jet swirling spout-fluidized bed (IMSSFB) are studied. Erosion experiments have obtained the characterization of particle erosion on internal components and verified the relevant numerical models. The results show that: the particle distribution within the IMSSFB is uneven due to the cyclonic effect of the axial swirl vane (ASV), resulting in particle erosion for the ASV being concentrated on one side; when the gas reaches the top, too high an erosion gas velocity leads to gas backflow. As the filling height increases, there is a tendency for the erosion position of the particles on the ASV to expand upwards. However, the effect of increasing gas velocity on the erosion position is insignificant.

Key words: Integral multi-jet swirling spout-fluidized bed, Gas–particle hydrodynamics, Axial swirl vane, Uneven, Erosion

摘要： In this paper, using the computational fluid dynamics based on Euler Lagrange and the commercial software Barracuda VR, the gas–particle hydrodynamics and the erosion of particles on the inner wall and internal components of the spouted bed in the integrated multi-jet swirling spout-fluidized bed (IMSSFB) are studied. Erosion experiments have obtained the characterization of particle erosion on internal components and verified the relevant numerical models. The results show that: the particle distribution within the IMSSFB is uneven due to the cyclonic effect of the axial swirl vane (ASV), resulting in particle erosion for the ASV being concentrated on one side; when the gas reaches the top, too high an erosion gas velocity leads to gas backflow. As the filling height increases, there is a tendency for the erosion position of the particles on the ASV to expand upwards. However, the effect of increasing gas velocity on the erosion position is insignificant.

关键词: Integral multi-jet swirling spout-fluidized bed, Gas–particle hydrodynamics, Axial swirl vane, Uneven, Erosion

Wenbin Li, Feng Wu, Liuyun Xu, Jipeng Sun, Xiaoxun Ma. Numerical and experimental study on the particle erosion and gas–particle hydrodynamics in an integral multi-jet swirling spout-fluidized bed[J]. Chinese Journal of Chemical Engineering, 2023, 61(9): 90-101.

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Numerical and experimental study on the particle erosion and gas–particle hydrodynamics in an integral multi-jet swirling spout-fluidized bed

Numerical and experimental study on the particle erosion and gas–particle hydrodynamics in an integral multi-jet swirling spout-fluidized bed

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