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Flow behavior in a rotating packed bed reactor with single-layer mesh: Effect of fiber cross-sectional shape

Wen, Zhang-Nan ; Li, Yan-Bin ; Liu, Wei ; Luo, Yong ; Zhang, Liang-Liang ; Chu, Guang-Wen

Chemical engineering science, 2022-02, Vol.248, p.117147, Article 117147 [Periódico revisado por pares]

Elsevier Ltd

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  • Título:
    Flow behavior in a rotating packed bed reactor with single-layer mesh: Effect of fiber cross-sectional shape
  • Autor: Wen, Zhang-Nan ; Li, Yan-Bin ; Liu, Wei ; Luo, Yong ; Zhang, Liang-Liang ; Chu, Guang-Wen
  • Assuntos: Fiber cross-sectional shape ; Liquid dispersion ; Liquid flow pattern ; Rotating packed bed reactor
  • É parte de: Chemical engineering science, 2022-02, Vol.248, p.117147, Article 117147
  • Descrição: [Display omitted] •Effect of mesh fiber cross-sectional shape on liquid flow in RPB was investigated.•Liquid flow pattern, average droplet diameter and liquid distribution were studied.•Liquid impact-disintegration process and velocity and pressure fields were revealed.•Liquid dispersion was intensified effectively by mesh with quadrangular fibers. Mesh packing in rotating packed bed reactors has been intensively exploited. As a crucial parameter of mesh, fiber cross-sectional shape was expected to affect the liquid flow behavior inside packing. Herein, liquid jet impacting on rotating single-layer meshes with various fiber cross-sectional shapes, including circular, elliptical, and quadrangular, were investigated. Liquid flow pattern and dispersion characteristics were studied by visualization. Details of liquid impact-disintegration process and internal velocity and pressure fields were presented via simulation. The curved surface allowed liquid to flow around fiber and converge again, then generated liquid ligaments and films perpendicular to the rotational axis. The sharp edges of quadrangular fiber hampered separated liquid to converge, thus generating liquid films parallel to the rotational axis. The mesh composed of vertical quadrangular fiber and horizontal elliptical fiber reduced average droplet diameter by 16% and liquid maldistribution index by 14% compared to mesh with circular fibers, intensifying liquid dispersion.
  • Editor: Elsevier Ltd
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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