FZG Series Vacuum Tray Dryer Vacuum drying is divided into static and dynamic, Model FZG square vacuum drier belongs to static drier. It is suitable for drying heat sensitive raw materials which often decompose, polymerize or metamorphose under high temperature. It is widely used in the final of pharmaceutical, chemical, foodstuff and electronic industry Principle To heat and dry raw material under the state of vacuum is called vacuum drying. It use vacuum to pump air and humidity out. Making the work-room on the vacuum state. The drying rate increases greatly and energy is saved. Note: If use condensator, the solvent in raw material can be recovered. If use SK series water ring vacuum pump or ZSWJ series hydraulic inject vacuum pump sets, condenser can not be used and the investment could be saved. Features Under the condition of vacuum, the boiling point of raw material will decrease and make the evaporation's efficiency higher. Therefore, it can save the conducting area of evaporator under the same quantity of heat transfer. The heat source for evaporating may be low pressure steam or surplus heat steam. The heat of evaporation loss is less. Before drying, the drier can be disinfected. During the period of drying, there is no impurity material mixing. It is in conformity with the requirement of "GMP". It belongs to static drier. So the shape of raw material to be dried can not be destroyed.
