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Freeze drying principle
A drying technique that freezes wet materials or solutions into a solid state at lower temperatures (-10 ° C~-50 ° C or even lower), and then sublimates the water in the liquid state directly into a gas state under vacuum (1.3~13 Pa), ultimately dehydrating the material. The principle of vacuum freeze-drying is based on the three-phase equilibrium diagram of water. Firstly, the temperature of the sample is reduced to below atmospheric pressure to completely solidify the water in the sample into ice crystals. Then, the freeze-drying machine starts to evacuate and reduce the pressure. The solid ice crystals can directly sublime into gaseous water vapor, releasing the water in the sample and ultimately achieving the purpose of drying. Due to the low temperature of the sample and its water during the drying process, it can effectively slow down the rate of chemical reactions, reduce the thermal motion of molecules, and thus reduce collisions and interactions between molecules, which is beneficial for maintaining the integrity of the internal molecular structure and properties of the sample.
Technical parameter
| NO. | Name | Description | Note |
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Model | FD-125 | Actual area of material tray ≥ 125 |
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External dimensions | Circular chamber,about 9800*3100*3800mm | |
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Total power | Drying and vacuum 210.5kw+Quick frozen room 9.3kw=Total 219.8kw 380V,50HZ |
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Equipment footprint | about 170 square meters | Excluding the area of loading and unloading material areas |
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Material load capacity | Standard 1250-1875kg/batch | The final decision depends on the specific product and process |
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Actual drying area | 125 square meters | |
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Material tray | 336pcs | One set for use, can purchase an additional set as a backup |
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Number of trolley | 4sets | |
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Heating method | Default steam heating, can be designed for electric heating, radiation drying way | Customer provides steam |
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Number of heating plates | 44pieces (22 pieces on each side) | |
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Cold trap form | Placed behind the heating plate | The best water capture effect |
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Cold trap water capture area | ≥125 square meters | |
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Cold trap Ice capacity | Max1500kg | Using water as the experimental object |
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