An experimental investigation on solid acceleration length in the riser of a long circulating fluidized bed

W. Huang, J. Zhu

Research output: Journal PublicationArticlepeer-review

13 Citations (Scopus)

Abstract

Systematic experimental work was conducted to investigate the solid acceleration length in a 16 m long circulating fluidized bed riser with fluid cracking catalyst particles over a wide range of operating conditions. A more feasible method is proposed to determine the acceleration length from the measured axial profiles of pressure gradient (or apparent solid holdup). With this new method and large amount of experimental data, a clear picture on the variation of the acceleration length with both solid circulating rate and superficial gas velocity is obtained. It is found that the acceleration length increases generally with increasing solid flow rate and/or decreasing gas velocity. However, the trend in variation of the acceleration length with operating conditions are quite different in different operation ranges. Reasonable explanations are suggested for the observed variation patterns of acceleration length.

Original languageEnglish
Pages (from-to)70-76
Number of pages7
JournalChinese Journal of Chemical Engineering
Volume9
Issue number1
Publication statusPublished - Feb 2001
Externally publishedYes

Keywords

  • Acceleration length
  • Axial flow structure
  • CFB riser
  • Gas-solid flow
  • Solid acceleration
  • Solid holdup

ASJC Scopus subject areas

  • Environmental Engineering
  • Biochemistry
  • Chemistry (all)
  • Chemical Engineering (all)

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