Technical Specifications
Material Quantity: 600kg per batch
Low Temperature of Cold Trap: ≤-50℃
Bulk water catch capacity: 720 kg/batch
Ultimate vacuum degree: ≤5 Pa
Total Power: 160 kW
Equipment installation area and height: 130m x 4.2m
Weight: 13,000 kg
Features of this unit
1. Pre-freezing and drying are completed on-site, with the freeze-drying process automated for easy operation.
2. The board layer circulates a medium, with adjustable temperature; temperature difference ≤ 1°C, providing more even cooling and heating effects.
3. Touchscreen operation, PLC control system, real-time monitoring of equipment operation.
4. Connectable to a computer for remote control and storage of lyophilization curves.
5. Integrated design for easy transportation and installation, space-saving.
6. Features include CIP in-process cleaning, SIP in-process sterilization, hydraulic plug-in system, and more.
Equipment Application Fields
Pharmaceutical Industry: The freeze-drying technique can be applied for the dehydration and preservation of various Chinese and Western medicines, including powders, pastes, 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.
Nutritional Health: Direct vacuum freeze-drying technology can also be used to dry 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 the nutritional supplements.
4. Biological Research: Utilizing vacuum freeze-drying technology, bacteria, arteries, bones, skin, corneas, nerve tissues, and various organs can be preserved 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 creation, 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 many ways to achieve dryness, such as sun-drying, boiling dry, air-drying, spray drying, and vacuum drying, among others. However, these drying methods are all based onPerform at temperatures above 0℃ or higher. The dried product typically has reduced volume, hardened texture, with some substances oxidized, and most volatile components lost. Heat-sensitive substances, like proteins, may denature. Microorganisms lose biological activity, and the dried substance is less soluble in water. Consequently, there are significant differences in properties between the dried product and the original, as the freeze-drying process differs from the above drying methods. In freeze-drying, the product is dried at temperatures below 0℃ throughout the process, i.e., while the product is frozen, until the later 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 with a high water content into a solid, then under vacuum, allowing water vapor to sublime directly, leaving the substance in the ice framework. Thus, the dried product is fluffy, porous, and maintains its volume. To decrease the product's temperature and slow the sublimation rate, it is necessary to apply appropriate heating. The entire drying process is conducted at lower temperatures.
Advantages of Freeze-Drying
1. Freeze-drying is conducted under 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, medicines, and foods.
3. During the freeze-drying process, microbial growth and enzyme activity are halted, thus preserving the original characteristics.
4. Due to drying in a frozen state, the volume remains almost unchanged, maintaining the original structure without any concentration.
5. The dried substance is loose and porous, resembling a sponge, which dissolves rapidly and completely upon the addition of water, restoring its original properties almost instantly.
6. Due to the drying process taking place under vacuum, with reduced oxygen levels, some easily oxidizable substances are protected.
7. Drying can remove over 95% of the moisture, ensuring 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.
