Technical Specifications
Material intake quantity50kg per batch
Cold Trap Low Temperature:≤-60℃
Large water intake capacity60kg per batch
Ultimate vacuum degree:≤5Pa
Total Power:22kw
Equipment installation area and height:25m² * 2.5m
Weight:2500kg
Key Features of This Machine
Flash-freezing and drying are completed in situ, with the freeze-drying process automated and operation simplified.
2. Circulating medium within the layers, temperature adjustable, temperature difference ≤ 1°C, with more uniform 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, saving space.
6. Features include CIP in-line cleaning, SIP in-line 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 plasma, vaccines, enzymes, antibiotics, hormones, and more.
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, 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 Products: The vacuum freezing drying technology is also used for drying royal jelly, pearl powder, ginseng, fish meal, black ant powder, snake powder, etc., which can preserve their nutritional components and active ingredients for a long time, ensuring the naturalness of the health products.
4. Biomedical Research: The vacuum freeze-drying technique can preserve bacteria, arteries, bones, skin, corneas, and nerve tissues, as well as various organs, for long periods. Upon use, water can be supplied to regenerate them, maintaining their biochemical and physical properties.
5. Other: Applications such as in the production of aerospace 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 to prevent the spoilage and deterioration of substances. There are numerous ways to dry, 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 or equal to 0°C. The dried product is generally reduced in volume, hardened in 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 substance is not easily soluble in water. Consequently, there are significant differences in properties between the dried product and the original, unlike the above drying methods, which are performed at temperatures below 0°C, i.e., during the frozen state of the product. Only towards the end, to further reduce the residual water content, is the product raised to temperatures above 0°C, but usually not exceeding 50°C. Freeze-drying involves pre-freezing a substance containing a high amount of water 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 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 conducted at lower temperatures.
Advantages of Freeze-Drying
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. Therefore, it is widely used in the pharmaceutical industry.
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 food.
3. During the freeze-drying process, microbial growth and enzymatic activity are inhibited, thus preserving the original characteristics.
4. Due to drying while in a frozen state, the volume remains nearly unchanged, maintaining the original structure and preventing concentration.
5. The dried substance is loose and porous, resembling a sponge. Upon addition of water, it dissolves quickly and completely, almost immediately reverting to its original properties.
6. Due to the drying process taking place under vacuum, with reduced oxygen levels, some easily oxidizable materials 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 departments.
