Technical Specifications
Material Quantity: 250kg per batch
Cold Trap Low Temperature: ≤-60℃
Bulk Water Catching Capacity: 3000 kg per batch
Ultimate vacuum: ≤5 Pa
Total Power: 75 kW
Equipment installation area and height: 48m² x 2.6m
Weight: 8,500 kg
Features of the unit
1. Pre-freezing and drying are completed in situ, with the freeze-drying process automated for easy operation.
2. Circulating medium within the panels, with adjustable temperature; temperature difference ≤ 1°C, providing more even cooling and heating effects.
Touchscreen operation, PLC control system, real-time monitoring of equipment operation.
4. Connectable to computers for remote control and storage of freeze-drying curves.
5. Integrated design for easy transportation and installation, space-saving.
6. Features include CIP in-place cleaning, SIP in-place sterilization, hydraulic plug-in system, and more.
Equipment Application Fields
1. Pharmaceutical Industry: The freeze-drying technique can be utilized for the dehydration and preservation of various Chinese and Western medicines such as powders, pastes, vaccines, enzymes, antibiotics, and hormones.
2. Food Industry: Vacuum Freeze-Drying technology is primarily used in the food industry for drying coffee, leafy vegetables, juices, strawberries, whole shrimp, meats, specialty vegetables, etc. It preserves the color, aroma, flavor, shape, and nutritional value of the food, making it easy for long-term storage and transportation, and is highly suitable for the production of convenient and nutritious food products.
3 Nutritional Health: The vacuum freeze-drying technique can also be used for drying royal jelly, pearl powder, ginseng, fish meal, ant powder, snake powder, and more. It can preserve their nutritional and active ingredients for a long time.
Ensure the naturalness of nutritional supplements.
4. Bioresearch: The vacuum freeze-drying technology can preserve bacteria, arteries, bones, skin, corneas, nerve tissues, and various organs for long periods. When used, water can be supplied to regenerate them, maintaining their integrity.
Its biochemical and physical properties.
5. Other applications, such as in the production of aerospace thermal insulation ceramics, wood and silk artifacts in archaeology, preservation of products, specimen creation, and preparation of special materials, yield unique effects.
Principle of Freeze-Drying
Drying is one method of preserving substances from spoilage and deterioration. There are many ways to dry, such as sun-drying, boiling dry, air-drying, spray drying, and vacuum drying, etc. However, these drying methods are all based onProcess at or above 0℃. The dried product typically has reduced volume, harder texture, with some substances oxidized, and most volatile components lost. Heat-sensitive substances, such as proteins, may denature. Microorganisms lose biological activity, and the dried material is less soluble in water. Consequently, the dried product differs significantly in properties from the original. Unlike the above drying methods, freeze-drying is done primarily below 0℃. It is carried out while the product is frozen, and only towards the end, to further reduce residual moisture content, is the product heated to above 0℃ but usually not exceeding 50℃. Freeze-drying involves pre-freezing the moisture-rich material to a solid state, then under vacuum, allowing water vapor to sublime directly, leaving the substance in the frozen ice matrix. This results in a dried product that is疏松, porous, and retains its volume. To decrease the product's temperature and slow down the sublimation rate, heating is necessary to increase the sublimation speed and shorten the drying time. The entire drying process is conducted at lower temperatures.
The Advantages of Freeze-Drying
1. Freeze-drying is conducted at low temperatures, making it particularly suitable for many thermosensitive substances, such as proteins and microorganisms, which do not denature or lose their biological activity. As a result, it is widely used in pharmaceutical applications.
2. During low-temperature dry roasting, there is minimal loss of volatile components in the material, making it suitable for drying certain chemical products, pharmaceuticals, and food.
3. During the freeze-drying process, microbial growth and enzyme activity are halted, thus preserving the original characteristics.
4. Due to drying while in a frozen state, the volume remains almost unchanged, preserving the original structure and avoiding any concentration.
5. The dried material is loose and porous, resembling a sponge. Upon adding water, it dissolves rapidly and completely, almost immediately regaining its original properties.
6. Due to the drying process taking place under vacuum with limited oxygen, some easily oxidizable substances are protected.
7. Drying can remove over 95% of moisture, ensuring that the product can be stored long-term after drying without spoilage.
Therefore, freeze-drying is currently widely used in the pharmaceutical industry, food industry, scientific research, and other sectors.
