Development status of pharmaceutical drying equipment in China (1)

In China, the use of drying equipment has a history spanning several decades, but large-scale development of drying technology is a more recent phenomenon, emerging mainly over the past two decades. During this period, numerous engineering and technical professionals have made significant efforts to develop or imitate various types of drying equipment. As a result, most industrial models are now manufactured domestically, significantly reducing the reliance on imported drying systems. A large number of trained drying technicians have also emerged, along with the growth of around 400 manufacturers in the field—making China the country with the largest number of such companies globally. However, despite this progress, many domestic drying equipment manufacturers still lack international recognition in terms of both technology and manufacturing standards. Most of these products are sold within the domestic market, and exports remain minimal, often at unimpressive prices. This situation is not conducive to the long-term development of drying technology in China and needs urgent improvement. One of the main reasons for this stagnation lies in the gap in basic research. Although theoretical advancements have been made, practical applications still face challenges, and many areas remain underdeveloped. Since the first National Drying Technology Exchange Conference held in Nanjing in 1975, eight conferences have taken place, with each one contributing to the growing body of knowledge. However, compared to countries like Denmark, Canada, and Japan, China's theoretical research remains limited in scope and depth. Strengthening fundamental studies is essential for the next leap forward in Chinese drying technology. Another critical issue is the insufficient experimental infrastructure. Drying is a highly experimental process, requiring rigorous testing to determine parameters such as temperature, time, and product quality. Yet, many research institutions and manufacturers lack proper experimental facilities, leading to design inefficiencies and poor product performance. The absence of reliable experimental data hinders the development of new and improved drying technologies. Additionally, there is a gap in processing technology. Many drying machines in China are still produced using traditional, labor-intensive methods, which affect the consistency and quality of parts. In contrast, foreign manufacturers often use automated welding and surface finishing techniques, resulting in higher precision and better performance. The low mold-forming rate in China limits the ability to produce standardized components, making it difficult to compete internationally. Lastly, the control systems of Chinese drying equipment lag behind those of their foreign counterparts. Effective process control is crucial for ensuring product quality and energy efficiency. Currently, many systems rely on manual or semi-automatic controls, which introduce human error and reduce overall stability. Implementing advanced control strategies, such as computerized or fuzzy logic-based systems, could significantly enhance the performance and reliability of drying equipment. To move forward, China must invest more in research, improve experimental capabilities, upgrade manufacturing processes, and adopt modern control technologies. Only then can its drying industry truly compete on the global stage.

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