Regular Article

Scale-up strategy for the jetting fluidized bed using a CFD model based on two-fluid theory

  1. Qicheng Wang1,
  2. Kai Zhang1,*,
  3. Stefano Brandani2,
  4. Jianchun Jiang3

Article first published online: 19 MAR 2009

DOI: 10.1002/cjce.20148

Issue

The Canadian Journal of Chemical Engineering

The Canadian Journal of Chemical Engineering

Special Issue: Spouted Bed Special Issue in Honour of Dr. Norman Epstein's 85th Birthday

Volume 87, Issue 2, pages 204–210, April 2009

Additional Information

How to Cite

Wang, Q., Zhang, K., Brandani, S. and Jiang, J. (2009), Scale-up strategy for the jetting fluidized bed using a CFD model based on two-fluid theory. Can. J. Chem. Eng., 87: 204–210. doi: 10.1002/cjce.20148

Author Information

  1. 1

    State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China

  2. 2

    IMP-SEE, University of Edinburgh, The King's Buildings, Edinburgh EH9 3JL, UK

  3. 3

    Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Nanjing 210042, China

*State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China

Publication History

  1. Issue published online: 19 MAR 2009
  2. Article first published online: 19 MAR 2009
  3. Manuscript Accepted: 30 DEC 2008
  4. Manuscript Revised: 4 DEC 2008
  5. Manuscript Received: 27 AUG 2008

SEARCH

SEARCH BY CITATION

ARTICLE TOOLS

View Full Article (HTML) Get PDF (586K)

Keywords:

  • jetting fluidized bed;
  • scale-up;
  • hydrodynamic model;
  • CFD simulation

Abstract

Based on a hydrodynamic two-fluid model [Brandani and Zhang, Powder Technol. 2006; 163(1–2): 80–87], the scaling relations developed by Glicksman et al., are modified to improve the understanding of the scale-up of jetting fluidized beds (JFBs). To estimate the ability of the proposed scaling rules to give similar results, simulations are conducted in CFX 4.4. We investigate in detail the effects of jet gas velocity on the scale-up rule. The similarities of jet evolutions and time-averaged radial viodage distributions are compared between large and small beds. The computational results confirm that the modified scaling rules are valid for JFBs when all dimensionless groups are matched between the prototype and large-scale beds.

À partir d'un modèle hydrodynamique à deux fluides (Brandani and Zhang, 2006), les relations d'échelle élaborées par Glicksman et al. sont modifiées de façon à améliorer la compréhension de l'extrapolation des lits fluidisés à jet (JFD). Pour valider les règles de mise à l'échelle proposées, des simulations sont menées avec le code CFX 4.4. Nous étudions en détail les effets de la vitesse de gaz de jet sur la règle d'extrapolation. Les similitudes dans l'évolution de jets et les distributions de vide radiales moyennées en temps sont comparées entre les grands et les petits lits. Les résultats des calculs par ordinateur confirment que les règles de mise à l'échelle modifiées sont valides pour les JFD lorsque tous les groupes adimensionnels entre les lits prototypes et les lits de grande échelle sont égaux.

View Full Article (HTML) Get PDF (586K)