It is suitable for drying heat sensitive raw materials that can decompose and polymerize and metamorphose at high temperature. lt is wide used in pharmaceutical, chemical, food stuff and electronic industries.
Under the condition of vacuum, the boiling point of raw material will decrease and make the pushing force become greater. Therefore, for a certain amount of heat radiation, the conducting area of evaporator can be saved;
The heat source for operation of evaporation may be low pressure steam or surplus heat steam:
The heat loss of evaporator is less; Before drying, the treatment of disinfection may be caried out. During the period of drying, there is no impurity material mixing. lt is in conformity with the requirement of GMP:
lt belongs to static drier. So the shape of raw material to be dried can not be destroyed.