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On the one hand, it shows that the degree of agricultural mechanization in our country is still far from enough; on the other hand, it also shows that there are still big gaps in our consumption philosophy. The drying of crops directly affects the quality of crops. For example, the "burst" and cracks of rice are not caused by threshing, but are problems of drying methods and drying processes. Different drying methods and drying processes will also affect the taste and nutritional content of crops. It is believed that as China's process of fully pursuing a well-off society continues to accelerate, people's consumption concepts will also undergo profound changes. 'Prof. Pan Yongkang said:' Drying technology research mainly refers to the drying theory, drying process and drying equipment research.
The focus of the theory of drying today is not the phenomenon of the transfer outside the material but the phenomenon of the internal transfer of the material during the drying process. A wide variety of materials are being dried, and the texture and transfer characteristics of the materials are changing during the dehydration process. Therefore, although a lot of work has been done on the international front, it is still not ideal and it still cannot solve the problem. As of today, the dry conditions are still largely determined by experimentation and experience. At the same time, domestic and foreign scholars have done a lot of research on drying processes and equipment.
There are more than 70 colleges and universities, research institutes and a large number of experts in drying technology research in our country. In China, some research and development of grain drying, drying of biological materials, drying of vegetables and fruits, and some new drying equipment have been at the forefront of the international level. Although China’s drying equipment manufacturers generally have weaker research and development and have invested less, But there are also some very good product development projects, such as self-cleaning rotary cylinders, closed-cycle organic superheated steam helium particle fluidized bed, large-scale spray fluidized granulation, 45 tons of large-scale spray drying equipment, etc., but unfortunately, Most of the technology developed is in a state of confidentiality and usually does not openly engage in academic exchanges.
According to MUJUMDAR, there are at least 200 international-level drying experts in the former Soviet Union. Drying technology was the world leader before the 1980s, but due to national conditions and language barriers that have affected their integration into the international drying industry, they are rarely seen today. To the brilliant papers they published, we should take warnings in this regard.
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China's drying machinery is no longer limited to the chemical industry
When it comes to market issues, the application of drying technology in China is by no means confined to the chemical industry but it is widely spread across industries. With the continuous development and progress of science and technology, the application of drying technology will be further broadened. The market is very large. Taking agricultural products as an example, the drying equipment for agricultural products owned by Japan is roughly 1.5 to 1.7 million units, compared with only 20,000 units in China.