Technical Specifications
Material Quantity: 1500 kg per batch
Cold Trap Low Temperature: ≤-50℃
Large Water Catching Capacity: 1800kg/batch
Ultimate vacuum degree: ≤5 Pa
Total Power: 231 kW
Equipment installation area and height: 300m² x 4.5m
Weight: 5,000 kg
Features of this unit
1. Pre-freezing and drying are completed in situ, with the freeze-drying process automated and operation simplified.
2. The layer allows for circulation of medium, 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 system, and more.
Equipment Application Fields
1. Pharmaceutical Industry: Utilizes freeze-drying technology for the dehydration and preservation of various Chinese and Western medicines such as powders, syrups, vaccines, enzymes, antibiotics, hormones, etc.
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 convenient for long-term storage and transportation. It 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 components for long periods.
Ensure the naturalness of nutritional supplements.
4. Bioresearch: The vacuum freeze-drying technique can preserve bacteria, arteries, bones, skin, corneas, nerve tissues, and various organs for long periods. Upon use, water can be supplied to regenerate them, maintaining their integrity.
Its biochemical and physical characteristics.
5. Other applications, such as in the production of aerospace thermal insulation ceramics, wood and silk artifacts in archaeology, preservation of products, specimen making, and preparation of special materials, yield unique effects.
Principle of Freeze-Drying
Drying is one method of preserving materials from spoilage and deterioration. There are numerous methods of drying, such as sun drying, boiling dry, air drying, spray drying, and vacuum drying. However, these drying methods are all based onProcess at or above 0℃. The dried product is generally reduced in volume, hardened in texture, with some substances oxidized, and most volatile components lost. Heat-sensitive substances, like proteins, may denature. Microorganisms lose biological activity, and the dried material is less soluble in water. Thus, there are significant differences in properties between the dried product and the original, as opposed to the freeze-drying method, which is different from the above dry-baking methods. The freeze-drying process is conducted mainly below 0℃ in the frozen state of the product, until the latter stages when the product is gradually raised to temperatures above 0℃ to further reduce residual moisture content, but usually not exceeding 50℃. Freeze-drying involves pre-freezing a substance containing a high water content into a solid, then, under vacuum conditions, the water vapor is directly sublimated out, leaving the substance itself in the ice matrix from the freezing state. Therefore, the dried product is fluffy and porous with no change in volume. To decrease the product's temperature and slow the sublimation rate, it is necessary to apply appropriate heating. The entire drying process is carried out at lower temperatures.
Advantages of Freeze-Drying
1. Freeze-drying is carried out 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. Therefore, 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, thereby preserving the original characteristics.
4. Due to drying in a frozen state, the volume remains almost unchanged, preserving the original structure and avoiding concentration.
5. The dried substance is loose and porous, resembling a sponge. Upon adding water, it dissolves quickly and completely, restoring its original properties almost immediately.
6. Due to the dry process under vacuum with minimal oxygen, some easily oxidizable materials are protected.
7. Drying can remove over 95% of moisture, ensuring that the product can be stored long-term after drying without deteriorating.
Thus, freeze-drying is currently widely applied in the pharmaceutical industry, food industry, scientific research, and other sectors.
