Shanghai Bilang Newsletter China's key technologies for freeze-drying (machine) have made important progress
According to Shanghai Birang Instrument Manufacturing Co., Ltd., the Institute of Hygiene Environmental Medicine of the Academy of Military Medical Sciences, the Laboratory Instrument Factory and the Beijing Sihuan Scientific Instrument Factory jointly completed the research and development of the "Intelligent Freeze Dryer Series Products". Efficient, green and environmentally friendly single-machine hybrid refrigeration system, developed multi-function monitoring software to achieve remote real-time collection, tracking and real-time monitoring of freeze-drying data.
For the first time, the researchers established a technical method for judging the material eutectic point on the basis of the combination of material resistance value and impedance change rate. The vacuum degree is precisely controlled by the gas permeation method, and the freeze-drying efficiency is improved by about 30% and realized. The entire process of the freeze-drying process is automatically controlled.
The freeze-drying process is a complex heat and mass transfer process involving refrigeration, vacuum, electronics, chemistry, cryogenic medicine, etc., with high technical content and complicated freeze-drying process. With the increasingly widespread use of freeze-drying technology in pharmaceutical production, file dehumidification, specimen preservation, food production, cultural relics and archaeology, people have higher and higher requirements for their technical parameters and intelligence level.
The product development of China's small and medium-sized freeze dryers began in the 1980s. At present, there are more than 10 manufacturers, all of which are in the state of satisfying only the most basic freeze-drying demand, and the overall technical level is always at a low level. Although foreign products have good technical performance, they are expensive and cannot meet the needs of a wider range of users. Therefore, it is very urgent to develop an intelligent freeze dryer that is internationally advanced.
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