Technical Specifications
Material Quantity: 1000 kg per batch
Low Temperature of Cold Trap: ≤-50℃
Large catch water capacity: 1200kg/batch
Ultimate vacuum: ≤5 Pa
Total Power: 172.5 kW
Equipment installation area and height: 200 m² x 4.5 m
Weight: 4,000 kg
Key Features of the Machine
1. Pre-freezing and drying are completed in situ, with the freeze-drying process automated and operation simplified.
2. The board layer circulates a medium for temperature regulation, with a temperature difference ≤ 1°C, ensuring more uniform cooling and heating effects.
3. 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, saving space.
6. Capable of connecting CIP in situ cleaning, SIP in situ sterilization, hydraulic plug-in system, and other functions.
Equipment Application Fields
Pharmaceutical Industry: Cryogenic drying technology can be used 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 shrimps, meats, specialty vegetables, etc. It preserves the food's color, aroma, taste, shape, and nutritional value, making it convenient for long-term storage and transportation, and is highly suitable for the production of convenient and nutritious food products.
3 Nutritional Health Products: The vacuum freeze-drying technique can also be used for drying royal jelly, pearl powder, ginseng, fish meal, ant powder, snake powder, etc., preserving their nutritional and active components for long-term storage.
Ensure the naturalness of nutritional supplements.
4. Biological Research: The vacuum freeze-drying technology can preserve bacteria, arteries, bones, skin, corneas, nerve tissues, and various organs for long-term storage. Upon use, the moisture can be replenished, 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 creation, 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 drying techniques, such as sun drying, boiling dry, air drying, spray drying, and vacuum drying. However, these methods of drying are all based onPerform at temperatures of 0℃ or higher. The dried product is generally reduced in volume, harder in texture, with some substances oxidized and most volatile components lost. Heat-sensitive substances, like proteins, may denature. Microorganisms lose their biological activity, and the dried material is less soluble in water. Thus, there are significant differences in the properties of the dried product compared to the original. Unlike the above-mentioned drying methods, freeze-drying is conducted at temperatures below 0℃, while the product is frozen. It is only raised to temperatures above 0℃ towards the end to further reduce residual moisture content, usually not exceeding 50℃. Freeze-drying involves pre-freezing the product containing a high water content, then, under vacuum conditions, allowing water vapor to sublime directly, leaving the substance behind in the ice framework. This results in a dried product that is loose, porous, and retains its volume. To decrease the product's temperature and slow down the sublimation rate, it is necessary to apply appropriate heating. The entire drying process is carried out 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, the loss of volatile components in the material is minimal, making it suitable for drying certain chemical products, pharmaceuticals, and foodstuffs.
During the freeze-drying process, the growth of microorganisms and the action of enzymes cannot occur, thereby maintaining the original characteristics.
4. Due to drying 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. Upon adding water, it dissolves quickly and completely, almost immediately regaining its original properties.
6. Due to the drying process taking place under vacuum, with reduced oxygen levels, some substances prone to oxidation are protected.
7. Drying can remove over 95% of moisture, ensuring the product can be stored long-term after drying without deterioration.
Therefore, freeze-drying is currently widely used in the pharmaceutical industry, food industry, scientific research, and other sectors.
