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The last edit to this post was made by Desert Fish on 2022-4-25 at 18:54. On April 10, the polypropylene plant of Guangxi Petrochemical Company successfully completed a one-week trial using domestically produced donor agents as catalysts; approximately 3,500 tons of polypropylene resin were produced. The plant operated smoothly and the product quality met the required standards, which indicates that the catalyst system used in this polypropylene plant is now entirely domestically sourced. In recent years, polypropylene plants have made efforts to achieve domestic production of the three components in the catalyst system; domestic production of the main catalyst, triethylaluminum as a co-catalyst, and granulation additives has been achieved for long-term stable use in the extrusion process. However, technical issues still exist regarding imported electron donors. Guangxi Petrochemical continues to explore solutions for replacing imported electron donors with domestic ones, having completed pilot tests and industrial trials of domestic electron donors in its polypropylene plants. This year, after preliminary tasks such as research, testing, site visits, exchanges, summarization, and bidding, the company began using domestically produced electron donors on April 1. During the operation, the staff strictly followed the grade-switching plan and carefully optimized the operational parameters; issues such as catalyst activity and reactor static electricity were resolved, ensuring the smooth progress of the operation. The successful use of domestically produced electron-donating promoters in polypropylene production not only reduced the cost of the three types of catalysts used in the process, enhancing the market competitiveness of the products, but also provided a technical foundation for developing new polypropylene products using different catalysts.