The influence of distributor structure on the solids distribution and flow development in circulating fluidized beds

Aijie Yan, Weixing Huang, Jesse Zhu

Research output: Journal PublicationArticlepeer-review

8 Citations (Scopus)

Abstract

The influence of distributor structure on solids distribution is studied in two riser circulating fluidized bed reactors with different distributor structures but similar diameters. Optic fibre probes were used for the measurement of local solids distribution. The axial and radial distribution of solids holdup in the riser with a multi-tube distributor is more uniform than that with a multi-orifice distributor. The radial profiles of particle velocity in the riser with the multi-tube distributor are also more uniform than that with the multi-orifice distributor. In the riser with the multi-tube distributor, both gas and particles are distributed more uniformly across the section, so that the flow acceleration is much more uniform and faster. The flow development is much faster and the fully developed region is reached early for the riser with the multi-tube distributor. The distributor design is an important factor for the design of circulating fluidized bed reactor.

Original languageEnglish
Pages (from-to)1023-1031
Number of pages9
JournalCanadian Journal of Chemical Engineering
Volume86
Issue number6
DOIs
Publication statusPublished - Dec 2008
Externally publishedYes

Keywords

  • Circulating fluidized bed
  • Distributor
  • Flow development
  • Fluidization
  • Local solids distribution

ASJC Scopus subject areas

  • General Chemical Engineering

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