Axial solids distribution and flow development in the risers of circulating fluidized beds with different heights

Weixing Huang, Aijie Yan, Jesse Jingxu Zhu

Research output: Journal PublicationArticlepeer-review

5 Citations (Scopus)

Abstract

The axial apparent solids holdup and flow development is studied in two riser circulating fluidized bed reactors of different heights (10 m and 15.1 m risers), but similar diameter (76 mm and 100 mm). Pressure transducers were used for the measurement of axial solids distribution and flow development. For a higher riser, the axial distribution of solids holdup becomes more uniform along the riser. The apparent solids holdup increases with the increase of solids circulating rate or decrease of superficial gas velocity. However, the influence of these operating conditions on solids holdups at different axial regions have different tendency of change, which is quite different at particle acceleration region and fully developed region. A more accurate correlation is proposed to predict average solids holdup at a fully developed region of CFB riser.

Original languageEnglish
Pages (from-to)17-24
Number of pages8
JournalJournal of the Chinese Institute of Chemical Engineers
Volume36
Issue number1
Publication statusPublished - Jan 2005
Externally publishedYes

Keywords

  • Axial solids distribution
  • Bed height
  • CFB
  • Flow development
  • Fluidization

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering

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