Working Principle
Vibrating fluidized bed dryer is a very successful modified fluidized bed. Adding mechanical vibration to the fluidized bed is a vibrating fluidized bed. Due to the additional vibration of the bed, the resistance of heat transfer and mass transfer is reduced. The drying rate in the vibrating fluidized bed is 1.5 to 2.5 times higher than that in the convective fluidized bed. Compared with the fixed bed, the drying speed of the constant speed drying stage is increased several times. It is worth mentioning that the critical moisture content is also reduced due to vibration in the drying stage, and the vibration can adjust the resonance frequency of the moisture contained in the solid capillary so that the moisture bound in the molecular form is partially eliminated due to vibration.
Standard vibrating fluidized bed pressure-equalizing bellows, fluidization section and settling section are composed of three parts. The heat energy is transferred from the hot air to the surface of the wet material in a cross-flow manner and is heated and dried in the fluidization section. The wet material is mixed and collided with each other under the action of the hot air flow and the vibration force, so as to ensure sufficient mass transfer and collision between the wet material and the hot airflow. Heat transfer keeps the material layer on the bed in a fluidized state with uniform and directional movement. The entrained particles are separated from the airflow in the expansion section and settle into the fluidized section, and the dried product is discharged from the discharge port. The exhaust gas is purified by a cyclone separator and then discharged.
Application
It is suitable for drying, cooling and humidifying operations of powder, crystal, granular materials and granular materials made of powder in chemical, pharmaceutical, food, dehydrated vegetables, grain, mining and other industries. Such as: citric acid, monosodium glutamate, chicken essence, boric acid, borax, ammonium sulfate, compound fertilizer, soybean meal, distiller’s grains, seeds, slag, sugar, sodium gluconate, sodium fluorosilicate, etc.
Technical Parameters
Model |
Fluidized bed area (m2) |
Inlet air temperature (℃) |
Outlet air temperature (℃) |
Dry strength (kg.H2O/h) |
Vibration motor |
|
Model |
power |
|||||
ZLG3×0.3 |
0.9 |
70-140 |
40-70 |
30-45 |
ZDS31-6 |
0.8×2 |
ZLG4.5×0.3 |
1.35 |
70-140 |
40-70 |
45-75 |
ZDS31-6 |
0.8×2 |
ZLG4.5×0.45 |
2.025 |
70-140 |
40-70 |
70-125 |
ZDS32-6 |
1.1×2 |
ZLG4.5×0.6 |
2.7 |
70-140 |
40-70 |
90-150 |
ZDS41-6 |
1.5×2 |
ZLG6×0.45 |
2.7 |
70-140 |
40-70 |
90-150 |
ZDS32-6 |
1.1×2 |
ZLG6×0.6 |
3.6 |
70-140 |
40-70 |
120-200 |
ZDS41-6 |
1.5×2 |
ZLG6×0.75 |
4.5 |
70-140 |
40-70 |
150-250 |
ZDS42-6 |
2.2×2 |
ZLG6×0.8 |
4.8 |
70-140 |
40-70 |
160-270 |
ZDS42-6 |
2.2×2 |
ZLG6×0.9 |
5.4 |
70-140 |
40-70 |
180-300 |
ZDS42-6 |
2.2×2 |
ZLG7.5×0.6 |
4.5 |
70-140 |
40-70 |
150-250 |
ZDS42-6 |
2.2×2 |
ZLG7.5×0.75 |
5.625 |
70-140 |
40-70 |
190-315 |
ZDS51-6 |
3.0×2 |
ZLG7.5×0.8 |
6 |
70-140 |
40-70 |
200-335 |
ZDS51-6 |
3.0×2 |
ZLG7.5×0.9 |
6.75 |
70-140 |
40-70 |
225-375 |
ZDS51-6 |
3.0×2 |
ZLG7.5×1.2 |
9 |
70-140 |
40-70 |
300-500 |
ZDS51-6 |
3.0×2 |
ZLG7.5×1.5 |
11.25 |
70-140 |
40-70 |
375-625 |
ZDS51-6 |
4.0×2 |
ZLG8×1.2 |
9.6 |
70-140 |
40-70 |
320-535 |
ZDS51-6 |
4.0×2 |
ZLG8×1.5 |
12 |
70-140 |
40-70 |
400-670 |
ZDS51-6 |
5.5×2 |
ZLG8×1.8 |
14.4 |
70-140 |
40-70 |
480-800 |
ZDS51-6 |
5.5×2 |