Technical Specifications
Material Quantity: 400 kg per batch
Low Temperature of Cold Trap: ≤-60℃
Large Water Catching Capacity: 480kg per batch
Ultimate vacuum: ≤5 Pa
Total Power: 120 kW
Equipment installation area and height: 60m x 2.8m
Weight: 100,500 kg
Key Features
1. Pre-freezing and drying are completed in situ, with the freeze-drying process automated for easy operation.
2. The board layer circulates a medium for temperature control, with a temperature difference of ≤1°C, ensuring 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
Pharmaceutical Industry: The freeze-drying technique can be used for the dehydration and preservation of various Chinese and Western medicines such as 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 shrimps, meats, specialty vegetables, etc. It preserves the color, aroma, taste, shape, and nutritional value of the food, facilitating long-term storage and transportation. It is particularly suitable for the production of convenient and nutritious food products.
3 Nutritional Health: The vacuum freeze-drying technology can also be used for drying royal jelly, pearl powder, ginseng, fish meal, black ant powder, snake powder, etc., which can preserve their nutritional and active components for long periods.
Ensure the naturalness of 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 replenished to regenerate, 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, product preservation, specimen making, and special material preparation, yield unique effects.
Principle of Freeze-Drying
Drying is one method of preserving materials from spoilage and deterioration. There are numerous ways to dry, such as sun drying, boiling dry, drying in an oven, spray drying, and vacuum drying, among others. However, these drying methods are all based onPerform under temperatures of 0℃ or higher. The dried product generally has reduced volume, hardened texture, some oxidation may occur, and most volatile components are lost. Heat-sensitive substances, such as proteins, may denature. Microorganisms lose biological activity, and the dried material is not easily soluble in water. Therefore, there are significant differences in the properties of the dried product compared to the original, while freeze-drying differs from the above mentioned drying methods. The drying process is carried out at temperatures below 0℃; that is, while the product is frozen, until later stages when the product is 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 amount of water into a solid, then under vacuum, the water vapor is directly sublimated out, leaving the substance itself in the ice matrix formed during freezing, resulting in a dry product that is疏松, porous, and retains its volume. To decrease the product's temperature and slow down the sublimation rate, and to increase the sublimation speed and shorten the drying time, it is necessary to apply appropriate heating. The entire drying process is conducted at lower temperatures.
The advantages of freeze-drying
1. Freeze-drying is carried out at low temperatures, making it particularly suitable for many thermosensitive materials, 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, the loss of volatile components in the material is minimal, making it suitable for drying certain chemical products, pharmaceuticals, and foodstuffs.
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, maintaining the original structure without any concentration phenomenon.
5. The dried substance is loose and porous, resembling a sponge, dissolves quickly and completely when water is added, almost immediately regaining its original properties.
6. Due to the drying process taking place under vacuum with limited oxygen, some substances prone to oxidation are protected.
7. Drying can remove over 95% of the moisture, allowing the product to be stored long-term without deterioration.
Therefore, freeze-drying is currently widely used in the pharmaceutical industry, food industry, scientific research, and other departments.
