Cold flow experimental study and computer simulations of a compact spouted bed reactor

Panagiotis N. Kechagiopoulos*, Spyros S. Voutetakis, Angeliki A. Lemonidou

*Corresponding author for this work

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Spouted beds are a very interesting class of gas-solid contactors that possess excellent heat transfer and mixing characteristics, while they are particularly suited to process coarse particles. Proper design of such beds requires the prediction of various hydrodynamic characteristics, such as the minimum spouting velocity and maximum spoutable height. Contrary to their typical initial applications, spouted beds have been finding recently more frequent use on the one hand at endothermic processes and on the other hand using much finer particle sizes. In the current work, the hydrodynamic characteristics of a laboratory scale spouted bed of 0.05 m diameter have been investigated via cold flow studies using olivine particles of 3.55-5.00 x 10(-4) m size. Hydrodynamic parameters have been measured at this compact geometry and fine particle size and were compared with common literature correlations. An empirical correlation was derived to predict the fountain height for the studied fine particle spouted bed. Computer simulations have been further used to investigate the heat transfer characteristics of the bed under endothermic reactive conditions, using methane reforming as a case study. Given sufficient external heat supply, a spouted bed operating at a well-mixed regime can efficiently drive even highly endothermic reactions. (C) 2014 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)137-149
Number of pages13
JournalChemical Engineering and Processing
Volume82
Early online date21 Jun 2014
DOIs
Publication statusPublished - Aug 2014

Keywords

  • spouted bed
  • hydrodynamic study
  • fine particles
  • endothermic reactions
  • reactor modeling
  • maximum spoutable height
  • phase chemical-reaction
  • acetic-acid
  • segregation behavior
  • numerical-simulation
  • hydrogen-production
  • steam gasification
  • mathematical-model
  • pressure-drop

Cite this