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First look at the freeze-drying system. Foreign researchers began to combine spray drying and freeze drying to create a new drying technology, spray freeze drying technology. According to incomplete statistics, the annual output value of spray drying technology in China's spray drying equipment manufacturing industry is over 300 million yuan, involving many industries such as chemicals, medicine, food, ceramics, biochemistry, environmental protection, and nano-materials. At present, the main mathematical models and analysis methods used in the drying field, along with the development of computer technology and the development of large-scale commercial software, such as CFX, FLUENT, FIlDAP, and other commercial software, combine different drying process models and parameters to make the drying process The accuracy of the simulation results has been further improved. At the same time, after looking into the research direction of future interest, we learned that the green drying technology that has been advocated in recent years and the drying technology using sustainable and renewable energy sources are also very popular. The concept of "green" drying technology proposed by the industry is environmentally-friendly drying. Therefore, “green†drying requires not only scientific researchers in the dry field to seriously study the discharge of water, steam and gas involved in the project, but also to seriously consider and solve the dust and noise generated during the drying process and the odor emitted by the process gas. , clean combustion, organic volatiles in the drying and other issues. After research, the drying industry personnel will certainly be able to innovate in such fields as nanotechnology, biotechnology, microelectronics, and comprehensive utilization of solar energy. The domestic dry industry has achieved certain achievements in this area, such as the freeze-drying of nano-materials by Xu Chenghai and solar heat pump drying by Zhang Shuguang. In the near future, gasification of natural plants, energy derived from liquefaction, solar energy, wind energy, and water energy will become the main energy sources for the drying industry. This will inspire the researchers in the drying field, the engineers and technicians of the drying equipment manufacturers or interested parties.
The drying field has made some research achievements in recent years, and some of the results have attracted considerable attention from the industry. After summing it up, it was discovered that drying technology, as an ancient operating technology, is increasingly being taken seriously by the manufacturing industry. According to reports published in the International Journal of Drying Technology, the drying industry is an area worth paying attention and investing in research. The journal focuses on the research and development of a series of hot-spot drying technologies such as freeze drying systems, spray drying, supercritical drying systems, and refractive window drying.