Vol.1, No 4, 1997 pp. 469 - 478
UDC: 536.2:66.047
EXPERIMENTAL STUDY ON DRYING KINETICS
OF SOLID PARTICLES IN FLUIDIZED BED
Wlodzimierz Ciesielczyk1, Mladen Stojiljković2,
Gradimir
Ilić2, Nenad Radojković2,
Mića Vukić2
1Institute of Chemical Engineering and Physical Chemistry,
Technical University of Cracow, Poland
2Faculty of Mechanical Engineering, Beogradska 14, 18000
Niš, Yugoslavia
Abstract. Based on experimental results on kinetics of silica gel
polytetra-fluoroethylene, sand and ammonium sulphate drying in fluidized
bed and a correlation equation for the mean gas solid heat transfer coefficient
in the constant-drayng-rate period a kinetics equation is proposed for
both characteristic drying periods. The suitability of introducing the
shape factor of the solid particle into the kinetic equation is shown.
EKSPERIMENTALNO ISTRAŽIVANJE KINETIKE
SUŠENJA ČVRSTIH ČESTICA
U FLUIDIZOVANOM SLOJU
U radu je data jednačina kinetike sušenja za oba karakteristična perioda
sušenja, na osnovu eksperimentalnih rezultata sušenja silikagela, politetra
fluornog etilena, peska i amonijum sulfata u fluidizovanom sloju. Uvedena
je korelaciona jednačina za odredjivanje koeficijenta prelaza toplote gas
- čvrste čestice u konstantnom periodu sušenja. Ukazuje se na pogodnost
uvodjenja faktora oblika čestica u jednačinu kinetike.
