INFLUENCED DETERMINATION OF THE HOT AIR PULSED FREQUENCY TO THE REFINED SUGAR CANE DRYING REGIME ON THE MODEL OF PULSED CONTINUOUS FLUIDIZED BED

Abstract

This research were conducted on the model of pulsed continuous fluidized bed that its capacity was 20kg/h. The experiment was performed the hot air pulsed frequency (f)were 0,1-0,9Hz during the 04 (four) technological parameters of dryng regimes was fixed which including the height of basical dried layer (H₀) was 65mm, the hot air temperature(t_g,) was 70^Oc, the mean diameter of RS grain(d_p) was 0,8mm and hot air velocity was 2m/s . The experiment was  found out the hot air pulsed frequency (f)were 0,6hz which was obtained the moisture contents (M₂) was 0,05% (this moisture content met  the TCVN 6958:2001),the specific heat consumption(q) was 955kJ/ kg of finished product, the specific electrical consumption (N) was 203Wh/ kg finished product and the efficiency of finished product(h) was 91% .

When the lower or higher hot air pulsed frequency that M₂, q, N were increased. Therefore, the hot air pulse frequency at 0.6 Hz was selected for RS drying in the pulsed continuous fluidized bed