A CFD approach on the effect of particle size on char entrainment in bubbling fluidised bed reactors

K. Papadikis, S. Gu*, A. V. Bridgwater

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)

Abstract

The fluid - particle interaction inside a 41.7 mg s-1 fluidised bed reactor is modelled. Three char particles of sizes 500 μm, 250 μm, and 100 μm are injected into the fluidised bed and the momentum transport from the fluidising gas and fluidised sand is modelled. Due to the fluidising conditions and reactor design the char particles will either be entrained from the reactor or remain inside the bubbling bed. The particle size is the factor that differentiates the particle motion inside the reactor and their efficient entrainment out of it. A 3-Dimensional simulation has been performed with a completele revised momentum transport model for bubble three-phase flow according to the literature as an extension to the commercial finite volume code FLUENT 6.2.

Original languageEnglish
Pages (from-to)21-29
Number of pages9
JournalBiomass and Bioenergy
Volume34
Issue number1
DOIs
Publication statusPublished - Jan 2010
Externally publishedYes

Keywords

  • CFD
  • Char entrainment
  • Fluidized bed
  • Momentum transport

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