Naslov
Fluid bed drying kinetics of spherical particles

Autori
Penović, Tomislav ; Ulatowska, Justyna ; Sander, Aleksandra

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
XXIV. HRVATSKI SKUP KEMIČARA I KEMIJSKIH INŽENJERA KNJIGA SAŽETAKA / Šime Ukić, Tomislav Bolanča - Zagreb : Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI), 2015, 203-203

ISBN
978-953-6894-54-3

Skup
XXIV. HRVATSKI SKUP KEMIČARA I KEMIJSKIH INŽENJERA

Mjesto i datum
Zagreb, Hrvatska, 21.04.2015. - 24.04.2015

Vrsta sudjelovanja
Poster

Vrsta recenzije
Domaća recenzija

Ključne riječi
drying; fluid bed; kinetics

Sažetak
Fluid bed drying kinetics of catalyst spheres has been investigated in this work. Commercial catalyst HYDROBON S-9, with an average particle size of 1.85 mm, was chosen as the material for examining fluid bed drying kinetics. Drying experiments were carried out in a laboratory fluid bed dryer at different drying air velocities, air temperatures and different catalyst bed heights. Drying kinetics data was collected by measuring air properties (relative humidity and temperature) at the dryer’s outlet at different time intervals. Specific surface area and the porosity of catalyst spheres were determined. Also the preliminary experiments included the determination of the minimal and terminal fluidization velocities which represent the fluidization operating range. Results showed that drying air temperature, velocity and catalyst bed height influence the drying kinetics significantly. Higher drying rates are achieved at higher drying air temperatures, suitable hydrodynamic conditions and by decreasing the catalyst bed height. Page mathematical model was used to approximate experimental drying kinetics data. Mass transfer coefficients have been evaluated using the kinetic equation. The evaluated model parameters and mass transfer coefficients have been correlated with process conditions.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

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