Can vacuum freeze-drying technology open the door to localization of equipment?

Drying is an important part of the food and drug production industry. Vacuum Freeze Drying Abbreviated as lyophilization, the wet material or solution is frozen to a solid state at a lower temperature (-10°C to -50°C), and then the water in the vacuum (1.3 to 13 Pascals) is directly replaced with liquid. Sublimation into a gaseous state that eventually dehydrates the material. China is a big country in the production and consumption of food and medicine. Therefore, the vacuum freeze-dryer market has broad prospects.

Vacuum freeze dryer is a new type of equipment that combines the refrigeration system, vacuum system, heat transfer oil heating system, and moisture removal system. It can make use of the storage space in the cabinet to dry and freeze vacuum drying. It can hold the powder after drying. Good dispersion. Vacuum freeze-drying machine is simple in operation, generally after the start of the material into the material box can be frozen. In the freezing process of materials, on the one hand, vacuum is used to vacuumize part of the water; on the other hand, when the material is frozen, the moisture contained in some molecules is discharged to the surface of the material and freezes. The heating system heats and dries the material and brings the moisture contained in the material to the freezing trap box by freezing to achieve freeze drying of the material.

According to experts, vacuum freeze dryers need to be pre-frozen in the product box. The pre-freezing process is critical and determines the dry quality of the product. After pre-freezing, the product will be evacuated and heated to remove moisture from the product. Pay attention to the heating temperature during drying. After the drying is completed, nitrogen filling or vacuum packing is required. Vacuum freeze-dried products can maintain the original physical and chemical properties.

In the past decade or so, the vacuum freeze-drying industry has achieved considerable development and its application area has gradually broadened. In life science research, it can be applied to the research of antibodies, proteins, tissues, microorganisms, etc. Therefore, a lot of vacuum freeze-drying is applied to the field of biopharmaceuticals. A large number of pharmaceutical industry vacuum freeze-drying preparation of vaccines, antibiotics and so on. In the field of health products, a large number of freeze-dried health products have been active in the health care products market, such as freeze-dried Chinese caterpillar fungus, freeze-dried sea cucumber, freeze-dried antler, and freeze-dried Dendrobium.

Compared with foreign vacuum freeze-drying equipment, China's domestic equipment prices are more affordable, which makes China's vacuum freeze-drying equipment in the market competition than the imported equipment has a clear price advantage, and the product can meet the basic drying needs of most industries, especially It is the demand of small and medium-sized enterprises in the food and pharmaceutical industry, so the domestic vacuum freeze-drying industry has great development space.

With the development of society, the importance attached to the environment is increasing. The state has introduced a series of policies to support green production and zero-pollution enterprises. The concept of energy-saving and environmental protection for vacuum freeze-drying equipment is also gradually increasing. Insiders pointed out that domestic companies have accelerated the study of vacuum freeze-drying technology, which has reduced energy consumption to a certain extent, reduced pollution, brought more benefits and value to the society, and made it necessary to achieve green production and low-carbon production. Contributions. But at this stage, the vacuum freeze dryer revolution in China has not yet been successful.

It is understood that vacuum freeze-drying equipment manufacturers generally have a low level of innovation capability. Poor enterprises that can introduce new technologies and new products with independent intellectual property rights have led to slow development of drying technology. Knowledge achievements have not been effectively translated into actual productivity. At present, the R&D and innovation of technologies in the field of drying equipment mainly rely on universities and research institutes. Due to the disconnection of companies, it is difficult to effectively turn knowledge achievements into productivity.

In view of the current problems in the vacuum freeze-drying industry, the author believes that indicators should be a permanent solution. Manufacturers should choose to face bottlenecks and eliminate defects one by one. In particular, they need to pay attention to innovation and independent property rights awareness. Enterprises need to strengthen cooperation and exchanges with universities and research institutes, actively explore drying technologies, and research and develop vacuum refrigeration suitable for the development needs of various industries in China. Drying equipment.