Numerical study of counter-current gas-solid flow in FCC disengager and stripper

Dening Jia, Hui Zhao, Abdallah S. Berrouk, Chaohe Yang, Honghong Shan

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

Detailed study of the gas-solid flow in FCC reactor was performed using Euler-Euler two-fluid model. Two distinct regions were identified in the reactor vessel based on differences in catalyst void fraction and fluid flow: the dilute phase congested disengager region and dense phase congested stripper region. Velocity profile revealed an inert yet random flow pattern in the disengager and a counter-current type of flow with a pronounced radial unevenness in the stripper. Residence time distribution proved that a small portion of oil vapour could linger over 5min before exiting despite that the apparatus may have a significantly shorter average residence time.

Original languageBritish English
Pages (from-to)176-188
Number of pages13
JournalCanadian Journal of Chemical Engineering
Volume92
Issue number1
DOIs
StatePublished - Jan 2014

Keywords

  • Computational fluid dynamics
  • Counter-current flow
  • Fluid catalytic cracking
  • Reactor vessel
  • Two-fluid model

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