Shenhua Coal-to-Oil Yulin Company uses domestic catalysts for the first time to produce impact-resistant copolymerized polypropylene products

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This post was last edited by liaifeng on 2018-8-15 at 18:42. Shenhua Coal-to-Oil Yulin Company uses domestic catalysts to produce impact-resistant copolymerized polypropylene for the first time. Author/Source: Date: 2017-10-24. Views: 32. On October 13, the polypropylene production unit of Shenhua Coal-to-Oil Yulin Company successfully completed the switch from S1003 to K8003 using domestic catalysts for the first time, marking a successful attempt at producing impact-resistant polypropylene with such catalysts. K8003 is a low-flow impact-resistant copolymer product that is widely used in the production of injection-molded home appliances, automotive parts, extruded pipes, fibers, and non-wovens. It has a broad range of applications and high market demand. Compared to S1003, the addition of ethylene in K8003 enhances the activity of the second reactor; as a result, the temperature and pressure within the reaction system are prone to fluctuations. Lumps and sticky materials tend to form during the reaction process, making it more difficult to control the reaction ； Compared with imported CDI catalysts, domestic SAL has reduced sensitivity to hydrogen and ethylene, increasing the difficulty of product quality control. To ensure the smooth completion of this operation to switch to a domestic catalyst grade, the company prepared in advance relevant technical materials such as switch-over procedure cards and emergency response plans, conducted comprehensive and systematic theoretical training for its employees, and organized instrument specialists in advance to inspect and verify equipment such as gas chromatographs. After 9 hours of meticulous work, the company successfully completed the grade switch; throughout the process there were no fluctuations in temperature or pressure, and no clumping or sticking of materials occurred. As the company’s first attempt to use domestic catalysts to produce impact-resistant copolymer products, this successful switch to a new grade not only effectively tested the performance of domestic catalysts in producing such copolymers but also assessed the operational skills of the employees at a higher level. This will lay a solid foundation for using domestic catalysts to produce other grades of polypropylene in the future.