A Parametric Study of the Drying Process of Polypropylene Particles in a Pilot-Scale Fluidized Bed Dryer using Computational Fluid Dynamics

Ali Nabizadeh, Hossein Hassanzadeh, Masoud Asadieraghi, Ali Hassanpour, Daryoush Moradi, Mostafa Keshavarz Moraveji, Mahdi Hozhabri Namin

Research output: Contribution to journalArticle


Fluidized Bed Dryer (FBD) is one of the efficient methods for drying moist particulate products. At the same time, the design and optimization of a full industrial scale FDB requires extensive studies. Using a pilot-scale dryer can be deemed as an efficient tool to obtain essential information on the drying phenomenon. Although these kinds of experimental analyses can provide valuable insight, there are still some operational limitations, including high-pressure or high-temperature conditions, which make the use of a computational procedure highly desirable. In this study, Computational Fluid Dynamics (CFD) approach has been employed to investigate a dryer. The results of numerical simulations were verified using the experimental data obtained from a pilot-scale dryer. The present investigation aims to study the effects of different operating conditions. It was observed that the impacts of gas inlet temperature were negligible, as the dryer was equipped with a thermal jacket, while the gas injection velocity had significant effects on the dryer’s performance. Moreover, the efficiencies of the conical and horizontal gas distributors were compared and it was concluded that the conical configuration results in better performance. The numerical and experimental investigation from this study can facilitate the design and scale-up of an industrial dryer plant.
Original languageEnglish
Pages (from-to)13-22
Number of pages10
JournalChemical Engineering Research and Design
Early online date11 Jan 2020
Publication statusE-pub ahead of print - 11 Jan 2020



  • Computational fluid dynamics
  • Drying technology
  • Fluidized bed dryer
  • Moisture

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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