Rotary Vacuum Dryer consists of
cylindrical jacketed vessel with a central
agitator having specially designed blades. In
Rotary Vacuum Dryers the indirect heating is
achieved by circulating hot water, Thermic oil
or steam through the jacket. The agitator
design is optimized so as to bring every
particle in contact with the heated surface
while rotating. This helps to achieve uniform
temperature throughout the batch thereby
preventing the re-condensation inside the
drying chamber since there are no cold
spots, and contributes to rapid drying speed
and eliminates caking. A high vacuum is
maintained, while the material is in motion
permitting the drawing off of moisture or
vapour under desired conditions. |