Coating and Drying in Spouted Bed: Influence of the Liquid-Particle Work of Adhesion
Titel:
Coating and Drying in Spouted Bed: Influence of the Liquid-Particle Work of Adhesion
Auteur:
Donida, M. W. Rocha, S. C. S. Castro, B. D. Marques, A. M. M.
Verschenen in:
Drying technology
Paginering:
Jaargang 25 (2007) nr. 2 pagina's 319-326
Jaar:
2007-02
Inhoud:
The aim of this work is to analyze the resulting process: coating or drying, and the respective fluid dynamic behavior, by bottom-spraying polymeric suspensions on a spouted bed of inert particles. Glass beads, ABSĀ®, polypropylene (PP), and polystyrene (PS) were chosen as inert particles and were analyzed and characterized by their physicochemical properties. The polymeric suspensions were characterized by density, surface tension, rheology, and wettability. The fluid dynamic behavior of the bed was correlated with the particles and suspensions characteristics for each process: coating and drying. Each process performance was correlated with the polymeric suspension-particle work of adhesion.