EFFECT OF FLUIDIZING PARTICLE ON DRYING CHARACTERISTICS OF POROUS MATERIAL IN FLUIDIZED BED

Autor:	Yoshitaka Senda, Keiji Yasuda, Masaaki Nakamura, Yuji Tatemoto, Yoshiyuki Bando
Rok vydání:	2001
Předmět:	Sample temperature Materials science Pore diameter Chromatography Drying time Fluidized bed Fluidized bed drying General Chemical Engineering Particle adhesion Physical and Theoretical Chemistry Composite material Porosity
Zdroj:	Drying Technology. 19:1305-1318
ISSN:	1532-2300 0737-3937
DOI:	10.1081/drt-100105290
Popis:	The drying characteristics of porous material in fluidized bed were examined theoretically and experimentally. The brick ball was used as the sample and immersed in the fluidized bed. The glass beads were used as the fluidizing particles and the particle diameters were changed. When the pore diameter of sample was relatively large, the fluidizing particles were adhered on the sample surface. In the theoretical analysis, the heat and mass transfers in adhered particle layer were considered. The fluidizing particles were adhered on the sample surface during the earlier period of drying. The sample temperature largely decreased when the mass of adhered particle decreased. The calculated results are in good agreement with experimental data. The diameter of fluidizing particle had a small effect on the drying time. The excess increments in drying gas temperature hardly contributed to shortening the drying time.
Databáze:	OpenAIRE
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