Drying and heat transfer characteristics for a novel fluidized bed dryer

Reyes A.; Eckholt, M; Alvarez, PI

Abstract

The use of a fluidized bed dryer with a lateral air flow and mechanical agitation to the drying of sludge from a wastewater treatment plant was investigated. Experimental curves of moisture content vs. drying time, as well as heat transfer coefficients and the size characteristics of the products, were determined at temperatures between 80°C and 11°C, a stirring rate of 55 rpm and air velocity of 0.9 m/s for 3 kg sludge batches with initial moisture contents of 0.55 and 0.65 (d.b.). Experimental drying kinetics were compared with values derived from three models based on Fick's second law, namely: the constant diffusivity model, the simplified variable diffusivity model, and the modified quasi-stationary model. © 2004 by Marcel Dekker, Inc.

Más información

Título según WOS: Drying and heat transfer characteristics for a novel fluidized bed dryer
Título según SCOPUS: Drying and heat transfer characteristics for a novel fluidized bed dryer
Título de la Revista: DRYING TECHNOLOGY
Volumen: 22
Número: 8
Editorial: TAYLOR & FRANCIS INC
Fecha de publicación: 2004
Página de inicio: 1869
Página final: 1895
Idioma: English
DOI:

10.1081/LDRT-200032837

Notas: ISI, SCOPUS