Numerical study on hydrodynamics of gas–solids circulating fluidized bed with L-valve

Hailun Ren, Wenbin Li, Liang Zeng, Kunlei Liu, Zhongli Tang, Donghui Zhang

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

L-valve is often used as a non-mechanical valve for the circulation of solids in gas–solids fluidized bed (GSFB) due to its advantages in simple construction and easy control. The information on solids circulation rate as well as the hydrodynamics performance of the CFB with L-valve is of great importance for its better control and design. This paper proposes a Eulerian-Eulerian approach based numerical model integrating the computational fluid dynamics (CFD) with turbulent model, the kinetic theory of granular flow (KTGF) and the drag model, thus the solids circulation rate and the local phase velocity as well as solids volume fraction can be predicted simultaneously. With this model, the hydrodynamics performance of the full loop GSCFB with a L-valve is analyzed in detail. It is found that the drag model affects the simulation significantly and the (energy minimization multiscale) EMMS method shows good performance in the full-loop simulation of GSCFB.

Original languageEnglish
Pages (from-to)37-46
Number of pages10
JournalParticuology
Volume77
DOIs
StatePublished - Jun 2023

Bibliographical note

Publisher Copyright:
© 2022 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences

Keywords

  • Computational fluid dynamics
  • Drag model
  • Full-loop simulation
  • Gas–solids circulating fluidized bed
  • L-valve

ASJC Scopus subject areas

  • General Chemical Engineering
  • General Materials Science

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