CFD-DEM simulation of the fluidized-bed granulation of food powders

Ju-Eun Kim
Korea University of Technology and Education, South Korea
Department of Energy, Materials and Chemical Engineering
Young Mi Chung
April 2018 - October 2018

In this study, the granulation behavior of food powders was simulated by taking into account the changes in the rheological properties and water content of the powders. Several food powders were studied and classified into self-agglomerating or non-agglomerating powders depending on the presence of a glass transition temperature. Cricket powder, which is incapable of self-agglomeration, was mixed with dextrin powder to enable the granulation process.

Cricket + dextrin powder was used as a simulation model, and the glass transition temperature of dextrin and a newly derived evaporation model were adopted in our simulation studies. Similar tendencies were observed in both the experimental and simulation results. Our granulation model can describe all of the following: nucleation, granulation based on the powder properties and changes in particle water content due to evaporation; these behaviors have not been modeled in this way previously.

Ministry of Science, ICT and Future Planning

EDEM simulation agrees well with our experimental results.

Ju-Eun Kim Korea University of Technology and Education