【Ten Years of Great Progress in Chemical Technology】012-2023: Sinopec’s first 3G+ loop polypropylene plant was successfully commissioned!

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The last edit to this post was made by Desert Fish on March 28, 2023, at 13:04. In March 2023, the copolymerization reactor of Hainan Refining & Chemical’s 300,000 tons per year polypropylene plant came online, producing high-performance impact-resistant copolymerized polypropylene products; this marked the successful full-scale operation of Sinopec’s 3G+ loop polypropylene technology. This is the first plant built by Sinopec using this technology, and it has the capability to produce high-performance polypropylene resin. The 3G+ ring-type pipe polypropylene technology was jointly developed by the Beijing Research Institute of Chemical Technology and the Engineering Construction Company (SEI). Building on third-generation (3G) ring-type pipe technology, it introduces a new type of fluidized-bed copolymerization reactor as well as a non-depressurized gas-locking technique for polymer powder, thereby significantly improving the performance of the impact-resistant copolymer products produced. Additionally, the startup cycle of the copolymerization reactor is extended. Direct preparation of polypropylene alloys in reactors can partially replace the blending modification process, enabling energy savings and reduced consumption in the processing of high-performance synthetic resins, while providing high-performance raw materials for downstream manufacturing industries. The rubber phase content of the products manufactured using this process exceeds 30%, which is significantly higher than that of 3G impact-resistant copolypropylene products; as a result, their impact resistance has been greatly improved. It is currently the product with the highest rubber phase content produced using the ring-type polypropylene process in the world.