Technical Specifications
Material intake quantity20 kg per batch
Cold Trap Low Temperature:≤-60℃
Large water intake capacity25kg per batch
Ultimate vacuum pressure:≤1Pa
Total Power:16kw
Equipment dimensions:2500*1000*2300mm
Weight:2000kg
Key Features of This Machine
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.
Touchscreen operation, PLC control system, real-time monitoring of equipment operation.
4. Compatible with computer connection, allows remote control, and stores freeze-drying curves.
5. Integrated design for easy transportation and installation, saving space.
6. Features include CIP in-process cleaning, SIP in-process sterilization, and hydraulic stopper insertion systems.
Equipment Application Fields
1. Pharmaceutical Industry: The freeze-drying technique can be utilized for the dehydration and preservation of various Western and Chinese medicines such as dried and pure herbs, plasma, vaccines, enzymes, antibiotics, and hormones.
2. Food Industry: Vacuum freeze-drying technology is primarily used in the food industry for drying coffee, leafy vegetables, fruit juices, strawberries, whole shrimps, meats, and specialty vegetables. It preserves the color, aroma, flavor, shape, and nutritional content of the food, making it easy for long-term storage and transportation. It is highly suitable for the production of convenient and nutritious food.
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, and more. It preserves their nutritional value and active ingredients for long-term storage, ensuring the naturalness of the nutritional supplements.
4. Bioresearch: The vacuum freeze-drying technique can preserve bacteria, arteries, bones, skin, corneas, nerve tissues, and various organs for long-term storage. 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 thermal insulation ceramics, wood and silk artifacts in archaeology, preservation of products, specimen creation, and preparation of special materials, demonstrate 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, 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 is generally reduced in volume, harder 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. Therefore, there are significant differences in properties between the dried product and the original, whereas freeze-drying differs from the above drying methods. The product is dried at temperatures below 0℃—specifically, while in a frozen state—until the 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 with a high water content into a solid, then, under vacuum conditions, allowing water vapor to sublime directly, leaving the substance itself in the ice framework from the freezing stage. Thus, the dried product 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 the pharmaceutical industry.
2. During low-temperature dry roasting, there is minimal loss of volatile components in the material, making it suitable for drying some chemical products, pharmaceuticals, and food.
3. During the freeze-drying process, microbial growth and enzyme activity are halted, thus preserving the original properties.
4. Due to drying in a frozen state, the volume remains almost unchanged, maintaining the original structure without any concentration.
5. The dried material is loose and porous, resembling a sponge, and dissolves rapidly and completely upon addition of water, almost immediately regaining its original properties.
6. Since drying is done under vacuum, with low oxygen levels, certain oxidizable materials are thus protected.
7. Drying can remove over 95% of moisture, ensuring that the product can be stored long-term post-drying without spoilage.
Therefore, freeze-drying is currently widely used in the pharmaceutical industry, food industry, scientific research, and other sectors.
