Comparison of the flow structures and regime transitions between a cylindrical fluidized bed and a square fluidized bed

Haidong Zhang, Zeneng Sun, Mengze Zhang, Yuanyuan Shao, Jesse Zhu

Research output: Journal PublicationArticlepeer-review

3 Citations (Scopus)

Abstract

Gas-solids flow structures between a circular fluidized bed and a square fluidized bed were compared by differential pressure drops and solids holdups. The flow regime transition from bubbling to turbulent fluidization in the fluidized bed was studied by the standard deviations of pressure drop and solids holdup. The geometry effect on the regime transition was also discussed by comparing the local solids holdup profiles and instantaneous solids holdup signals between the circular and square beds. The frequency and duration time of the changeover between the dilute and dense phases around the transition progress were also studied by statistically analyzing the solids holdup signals in both the square and circular beds.

Original languageEnglish
Pages (from-to)507-516
Number of pages10
JournalPowder Technology
Volume376
DOIs
Publication statusPublished - Oct 2020
Externally publishedYes

Keywords

  • Bubbling fluidized bed (BFB)
  • Geometry effect
  • Phase changeover
  • Regime transition
  • Turbulent fluidized bed (TFB)

ASJC Scopus subject areas

  • Chemical Engineering (all)

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