Modeling and experimental investigation of a Wurster type fluidized bed reactor (W-FBR) coupled with an air Atmospheric Pressure Plasma Jet (APPJ) for the treament of PolyPropylene (PP) powders - Sorbonne Université Access content directly
Conference Papers Year : 2018

Modeling and experimental investigation of a Wurster type fluidized bed reactor (W-FBR) coupled with an air Atmospheric Pressure Plasma Jet (APPJ) for the treament of PolyPropylene (PP) powders

Abstract

PolyPropylene (PP) powders are used for various purposes. However, its good mechanical properties are accompanied by a poor wettability. The PP powder was therefore modified by a pulsed arc air blown atmospheric pressure plasma jet (APPJ) in a home-made Wurster fluidized bed reactor (Wurster-FBR). The physical and chemical modifications of the treated PP powders as compared to the nontreated ones were determined by water contact angle (WCA) measurements, X-ray photoelectron spectroscopy (XPS), and SEM for morphology observations. The average diameter of our PP powders being determined to be 700 μm, they can be classified as particles of category B according to Geldart classification which can be easily fluidized. PP powders are basically hydrophobic but after plasma treatment in the plasma enhanced fluidized bed they became strongly hydrophilic, because of the oxygen uptake of the surface of the particles determined by XPS. The plasma torch was introduced into a transparent glass reactor with 118mm inside diameter, placed in the middle of a bronze gas distributor. An internal Wurster tube was added to control the residence time of the particles in the plasma jet, and therefore the homogeneity of the treatments. A 2D axisymmetric non-isothermal model was developed using Comsol Multiphysics 5.3 along with this experimental study to characterize the air-flow hydrodynamics and temperature profile. These investigations are very important since PP is a thermally sensitive material and to avoid its thermal degradation. The k-e turbulent model in computational fluid dynamic (CFD) was applied to simulate the mean flow characteristics for turbulent flow.
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Dates and versions

hal-03978408 , version 1 (08-02-2023)

Identifiers

  • HAL Id : hal-03978408 , version 1

Cite

Seyedshayan Tabibian, Farzaneh Arefi-Khonsari, Saleh Khashayar, Mikel Leturia, Mario Moscosa-Santillan, et al.. Modeling and experimental investigation of a Wurster type fluidized bed reactor (W-FBR) coupled with an air Atmospheric Pressure Plasma Jet (APPJ) for the treament of PolyPropylene (PP) powders. 16 th International Conference on Plasma Surface Engineering (PSE), Sep 2018, Garmish-Partenkirchen, Germany. ⟨hal-03978408⟩
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