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Determination of PVC Powder Drying Kinetics at Particle Scale: Experimental Study and Modeling

Aubin, Antoine and Ansart, Renaud and Hemati, Mehrdji and Lasuye, Thierry and Branly, Marc Determination of PVC Powder Drying Kinetics at Particle Scale: Experimental Study and Modeling. (2016) Drying Technology. 1-72. ISSN 0737-3937

(Document in English)

PDF (Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader

Official URL: http://dx.doi.org/10.1080/07373937.2016.1155596


An original experimental method is used to determine drying kinetic at particle scale. The particle scale kinetics was obtained by immersion of a small mass of wet PVC particles (cake) in a batch dense fluidized bed containing inert hot particles (glass bead). The results are summarized here and prove clearly that the PVC drying is controlled by a competition between internal and external transfer. The drying kinetic was described by a particle scale model taking into account the convective-diffusive (mass transfer) and the convective-evaporative (heat transfer) phenomena. To validate this model with the experimental data, the experimental fluidized bed dryer is modeled following two different approaches: a perfect stirred reactor model and a 3D numerical simulation using the multiphase flow code NEPTUNE_CFD. The aim of this 3D simulation is to simulate the phenomena occurring, at local scale, in a dense fluidized bed dryer and to show the limitations of the perfect stirred reactor model.

Item Type:Article
Additional Information:Thanks to Taylor & Francis editor. The definitive version is available at http://www.tandfonline.com/ The original PDF of the article can be found at Drying Technology website : http://www.tandfonline.com/loi/ldrt20
HAL Id:hal-03516530
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > INEOS (SWITZERLAND)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Laboratory name:
Deposited On:07 Jul 2016 13:57

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