evaporation efficiency higher. Therefore for a certain amount of heat transfer, the conducting area of dryer can be saved.
● The heat source for evaporation may be low pressure steamorsurplus heat steam.
● The heat loss is less.
● Before drying, the treatment of disinfection may be carried out. During the period of drying, there is no impurity material mixed. It is in conformity with the requirement of GMP.
● It belongs to static dryer. So the shape of raw material to be dried should no