It is well known that vacuum drying is to put raw material under the state of vacuum for heating and drying. If use vacuum to pump air and humidity out, the dry speed will be faster. Note: if use condenser, the solvent in raw material can be recovered. If the solvent is water, condenser might be canceled and the investment and energy could be saved.
It is suitable for drying heat sensitive raw materials that can decompose or polymerize or deteriorate at high temperature. It is widely used in pharmaceutical, chemical, foodstuff and electronic industries.
1. Under the condition of vacuum, the boiling point of raw material will decrease and make the evaporation efficiency higher. Therefore for a certain amount of heat transfer, the conducting area of dryer can be saved.
2. The heat source for evaporation may be low pressure steam or surplus heat steam.
The heat loss is less.
3. 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.
4. It belongs to static dryer. So the shape of raw material to be dried should not be destroyed.
Name/Specification | FZG-10 | FZG-15 | FZG-20 | |||||
Inside size of drying box(mm) | 1500×1060×1220 | 1500×1400×1220 | 1500×1800×1220 | |||||
Outer dimensions of drying box(mm) | 1513×1924×1720 | 1513×1924×2060 | 1513×1924×2500 | |||||
Layers of drying rack | 5 | 8 | 12 | |||||
interlayer distance(mm) | 122 | 122 | 122 | |||||
Baking pan size(mm) | 460×640×45 | 460×640×45 | 460×640×45 | |||||
Number of baking trays | 20 | 32 | 48 | |||||
pressure inside the drying rack(MPa) | ≤0.784 | ≤0.784 | ≤0.784 | |||||
oven temperature(°C) | 35-150 | 35-150 | 35-150 | |||||
No-load vacuum in the box(MPa) | -0.1 | |||||||
At -0.1MPa, heating temperature 110oAt C, the vaporization rate of water | 7.2 | 7.2 | 7.2 | |||||
When using condenser, vacuum pump model, power(kw) | 2X-70A / 5.5KW | 2X-70A / 5.5KW | 2X-90A/2KW | |||||
When no condenser is used, vacuum pump model, power(kw) | SK-3 / 5.5KW | SK-6/11KW | SK-6/11KW | |||||
Drying box weight | 1400 | 2100 | 3200 |
It is suitable for drying heat sensitive raw materials that can decompose or polymerize or deteriorate at high temperature. It is widely used in pharmaceutical, chemical, foodstuff and electronic industries.