Recently, the BSQ-2 catalyst independently developed by Sinopec with ultra-high hydrogenation sensitivity, high stereospecificity, and no plasticizer has been industrially applied in the multi-zone gas-phase circulation polypropylene plant with an annual output of 200,000 tons in Zhongke Refining & Chemical , and achieve stable operation.
The BSQ-2 catalyst for industrial application this time is a new catalyst with better performance developed by the research team of Polypropylene Research Institute after the successful industrial application of BSQ-1 catalyst by Zhongke Refining & Chemical. The activity of the BSQ-2 catalyst is twice that of the original imported catalyst used in the device, and it has higher hydrogen adjustment sensitivity, which can reduce the hydrogen consumption by half. During the catalyst trial process, the multi-zone reactor operated smoothly and the discharge was smooth and stable, which contributed to the localization of the multi-zone cyclic reaction catalyst and the development of new grades of high-performance polypropylene.
Beginning in 2021, Sinopec Beihua Research Institute, Zhongke Refining and Chemical, and Catalyst Company will form a joint research team to develop catalysts aimed at the problem of poor feeding or blockage in the production of impact copolymers using imported catalysts in polypropylene plants BSQ-1, assisting the device in the development and production of high-end grades.
In 2023, under the premise of stable production and guaranteed production, the research team conducted two trial trials of domestic catalysts to accumulate experience for catalyst improvement and finalization. Since February this year, the research team has held a co-construction exchange meeting on the development of new polyolefin products and the localization of catalysts, and initiated the final tackling of the localization of catalysts for this process; on March 9th, the industrial application of BSQ-1 catalysts was successfully completed, making the process equipment The domestic catalyst was used for the first time.
Xia Xianzhi, a senior expert of Sinopec Group Corporation, said that the current domestic demand for low-end polyolefin products has decreased, and the demand for the development of high value-added grades has continued to increase. New catalysts with better performance must be further developed to meet the needs of the industry. The device's demand for high value-added product development.
The research team once again organized scientific research personnel to go deep into the production line of Zhongke Refining and Chemical Plant, understand the characteristics of the process equipment, communicate with Zhongke Refining and Chemical Technology and production personnel, optimize the production plan, and further develop a new type of ultra-high hydrogen adjustment sensitivity , High stereospecificity, plasticizer-free BSQ-2 catalyst.
During the industrial trial of BSQ-2 catalyst, technicians kept a close eye on various reaction parameters and paid attention to product analysis. According to the previous laboratory data and device operation experience, they timely adjusted the feed amount of activator, external electron donor, hydrogen, catalyst and other materials to ensure the stable operation of the device, and successfully produced two grades of resin products, EP440N and EP548R, with various performances of the products Up to standard. (Baichuan)
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