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USING SEM FOR COMPARING TRENDS TO FORM CENOSPHERES IN SPRAY DRYING PROCESSES

Materia

materiales

Título

USING SEM FOR COMPARING TRENDS TO FORM CENOSPHERES IN SPRAY DRYING PROCESSES

Descripción

Cenosphere formation is a current phenomenon when spray drying suspensions. An impervious crust is formed as the surface of sprayed droplets is dried by the hot gas, and the residual water inside the droplet is overheated, and breaks part of the crust (1). This phenomenon is likely to occur at higher droplet diameter, higher gas temperature and higher dispersion (defloculation) in the suspension. Takahashi & al (2) show that agglomerated suspensions give a more pervious crust, because of less compact packing (fig. 1), and therefore, are less likely to form cenospheres. In that case, classical full spheres are observed. In the present work, Scanning Electron Microscopy (SEM) is proposed as a simple tool to compare the trends to form cenospheres when spray drying suspensions, depending on their agglomeration state.

Identificador

Cenospheres, Spray drying

Fuente

Revista de la Facultad de Ingeniería de la UCV, 2003, Vol. 18, pp. 155 – 156

Tipo

articulo científico en revista indexada

Autor

Thierry Poirier, Gleen Rodriguez

Fecha

2015

Formato

pdf

Idioma

inglés

Productor

Thierry Poirier, Gleen Rodriguez

Archivos

Citación

Thierry Poirier, Gleen Rodriguez, “USING SEM FOR COMPARING TRENDS TO FORM CENOSPHERES IN SPRAY DRYING PROCESSES,” esopo.usb.ve, consulta 23 de junio de 2017, http://esopo.usb.ve/items/show/70.