Modelling and simulation of batch and continuous fluidized bed dryers

A. H. Zahed, J. X. Zhu, J. R. Grace

Research output: Journal PublicationArticlepeer-review

51 Citations (Scopus)

Abstract

The performance of batch and continuous fluidized solids dryers has been modeled, with allowance for diffusional moisture transport in the dense phase particles and for interstitial gas-to-particle mass transfer within the dense phase, as well as for interphase exchange resistance between gas bubbles and the dense phase. Two types of boundary conditions are employed. Variations of the bed temperature and product moisture content in the bed with time are predicted numerically under various batch drying conditions. Exit product moisture contents, bed temperatures and outlet air humidities are also predicted for continuous drying at various mean residence times. The model can be used for homogeneous as well as bubbling fluidized bed drying. It can be used for a wide range of materials, including cereal grains and granular synthetic polymeric materials.

Original languageEnglish
Pages (from-to)1-28
Number of pages28
JournalDrying Technology
Volume13
Issue number1-2
DOIs
Publication statusPublished - 1 Jan 1995
Externally publishedYes

Keywords

  • fluidized bed drying
  • fluidized bed modelling
  • grain drying

ASJC Scopus subject areas

  • Chemical Engineering (all)
  • Physical and Theoretical Chemistry

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