SCI和EI收录∣中国化工学会会刊

中国化学工程学报 ›› 2023, Vol. 61 ›› Issue (9): 90-101.DOI: 10.1016/j.cjche.2023.03.011

• Full Length Article • 上一篇    下一篇

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. 1. School of Chemical Engineering, Northwest University, Xi'an 710069, China;
    2. Luoyang Jianguang Special Equipment Co., Ltd, Luoyang 471003, China
  • 收稿日期:2022-12-24 修回日期:2023-03-12 出版日期:2023-09-28 发布日期:2023-12-14
  • 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).

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. 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:2023-09-28 Published:2023-12-14
  • 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).

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

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