New investigation in regime transition from bubbling to turbulent fluidization

Haiyan Zhu, Jesse Zhu

Research output: Journal PublicationArticlepeer-review

21 Citations (Scopus)

Abstract

The regime transition velocity from bubbling to turbulent fluidization was investigated in a 0.267 m diameter fluidized bed with FCC particles. Different transition velocities and processes are found from the measurements of differential pressure fluctuations and local solids concentration. The measurements of differential pressure fluctuations shows a relatively quicker global regime transition, while the local regime transition obtained from the local solids concentration presents a more gradual process marked by two transition velocities. These transition velocities increase with initial static bed height. For the same initial static bed height, increasing the spacing between two pressure taps leads to lower pressure fluctuations and the appearance of two transition velocities.

Original languageEnglish
Pages (from-to)553-562
Number of pages10
JournalCanadian Journal of Chemical Engineering
Volume86
Issue number3
DOIs
Publication statusPublished - Jun 2008
Externally publishedYes

Keywords

  • Bubbling fluidization
  • Differential pressure
  • Flow regime transition
  • Local solids concentration
  • Turbulent fluidization

ASJC Scopus subject areas

  • Chemical Engineering (all)

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