【Ten Years of Rapid Development in Chemical Equipment】From 2393 to 2025, the production of polypropylene impact-resistant products saw the use of domestic catalysts

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Let’s give praise and encouragement to the achievements made in China’s chemical engineering technology and equipment; your participation in discussions is the greatest encouragement. **********************【Ten Years of Progress in Chemical Engineering Equipment】A continuously updated summary post is available – feel free to join the discussions: https://bbs.hcbbs.com/thread-3576046-1-1.html ***************** On May 13th, the Wushenzhao branch of China Coal Enerchemical Corporation successfully switched to using domestic catalysts in its polyolefin production facility to manufacture impact-resistant polypropylene products. This was the first time such a thing has been achieved in China, breaking through the technical bottleneck of relying on imported catalysts for the production of similar products domestically. It marks the achievement of full autonomy in both the use of domestic catalysts and the process operation techniques involved in manufacturing impact-resistant polypropylene products, filling a gap in China’s capabilities regarding the production and use of specialized catalysts in this field. 　　The production of polypropylene impact-resistant products is characterized by high operational complexity and intricate process interlocks. Catalysts, being a key technology in this field, have long relied on imports, facing challenges such as long supply lead times and high costs; especially for mid-to-high-end products, the dependence on imported catalysts is even greater. 　　Faced with the key core technical challenges that hinder the development of the industry, China Coal Enerchemical Company conducted numerous technical exchanges with domestic catalyst manufacturers. By integrating deeply the technological innovation capabilities of these catalyst producers with Enerchemical Company’s expertise in production operations and process technology, collaborative innovation was pursued to achieve breakthroughs in catalyst-related technologies, thereby providing domestic solutions for similar enterprises in China. First, algorithms enable accurate prediction. Based on a comparative analysis of parallel catalyst data, advanced process control systems and existing process mathematical models are utilized to simulate and predict the conversion process, thereby enabling the precise establishment of key technical control parameters ； Second is full-process risk control. By leveraging the catalyst laboratory, pilot-scale processes, and result analysis, the risks associated with catalyst performance and those arising during the testing phase are re-evaluated; specific technical control measures are established to ensure that the risks associated with domestic production trials remain under control ； Third is the in-depth application of achievements from the technical system. Based on previous production data and technical experience, a variety of technological innovations and process optimization measures were adopted to systematically address issues such as the difficulty in using domestic catalysts and unstable switching, as well as technical bottlenecks like high unit consumption and energy use, low stability, and excessive amount of intermediate materials, thereby providing technical support for the efficient use of domestic catalysts. 　　The successful application of domestic catalysts in these impact-resistant products has verified the feasibility of domestic catalyst technologies and production methods; it is expected to reduce catalyst costs by over 30%, thereby achieving cost savings and improved efficiency. The new polypropylene impact-resistant products LC1813-01 and K8303, as well as the differentiated grade EPS30R, produced using this catalyst, can be widely applied in products such as heavy-duty components and automotive parts. There is strong market demand for them, and they play an important role in enhancing competitive differentiation in the market.