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Main 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 KU series water ring vacuum pump or KUseries hydraulic inject vacuum pump sets, condenser can not be used and the investment could be saved.
Main 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.
Adopting the condenser machine, evaporating solvent in the target material can be reclaimed by the condenser. If adopting KU-70 liquid loop pump vacuum machine series instead of the condenser, it can save energy and investment.
Main Parameters:
| Name specification | KU-600 Ø *L | KU-800 Ø *L | KU-1000 Ø *L | KU-1400 Ø *L | KU-15 L*W*H |
| inside size of chamber (mm) | 600*976 | 800*1274 | 1000*1527 | 1400*2054 | 1500*1400*1220 |
| outer size of chamber (mm) | 1153*810*1020 | 1700*1040*1335 | 1693*1190*1500 | 2386*1657*1920 | 1513*1924*2060 |
| layers of baking shelf | 4 | 4 | 6 | 8 | 8 |
| layer of baking shelf (mm) | 81 | 82 | 102 | 102 | 122 |
| size of baking disk (mm) | 310*600*45 | 460*600*45 | 460*640*45 | 460*640*45 | 460*640*45 |
| number of baking disk | 4 | 8 | 12 | 32 | 32 |
| permitted pressure inside the pipe of baking shelf (MPa) | ≤ 0.784(8kg/cm2) | ≤ 0.784 | ≤ 0.784 | ≤ 0.784 | ≤ 0.784 |
| temperature inside chamber (° C) | ≤ 150 | ≤ 150 | ≤ 150 | ≤ 150 | ≤ 150 |
| vacuum in idle inside chamber (MPa) | ≤ -0.095 | ||||
| when vacuum is 30 torr and the heating temperature is 1100C, vaporized rate of water (kg/m2. h) | 7.2 | ||||
| if use condensator, type and power of vacuum pump (kw) | 2X-15A 2kw | 2X-30A 3kw | W3 5.5kw | W3 7.5kw | 2X-70A 7.5kw |
| if not use condensator, type and power of vacuum pump (kw) | SK-0.8 2.2kw | SK-3 5.5kw | SK-3 5.5kw | SK-3 7.5kw | SK-3 7.5kw |
| weight of drying chamber (kg) | 250 | 600 | 800 | 1000 | 2100 |
