Shenghong is deploying another set of high-end polyolefin pilot plants! Environmental impact assessment for Jiangsu Sierbang’s 800-ton/year high-end polyolefin pilot plant project accepted

Thread Content

On November 10, a public announcement was made regarding the status of acceptance of the environmental impact assessment documents for Jiangsu Sierbang Petrochemical Co., Ltd.’s 800-ton/year high-end polyolefin pilot plant project. Overview of this construction project Project name: 800-ton/year high-end polyolefin pilot plant project ； Project nature: Renovation and construction. Location: Within the existing Sierbang factory site, to the east of Gangqian Si Road and to the north of Zoushan Second Road, in the East-West-Mid Region Cooperation Demonstration Zone of Lianyungang City ； Total investment: 10 million yuan ； Project land area: This project is developed by upgrading the existing POE pilot-scale technology development facilities within the current factory site, with no additional land required; the land area for this project is 3,872 m² ； Construction content: Build a 800t/a high-end polyolefin pilot plant project. This project involves upgrading the existing 800-ton/year POE pilot plant along with its associated auxiliary facilities. By making use of the existing main pilot plant equipment and the extrusion and material preparation buildings, additional equipment such as butylene feed buffer tanks is added to build an 800-ton/year high-end polyolefin pilot plant, thereby enabling the production of high-end polyolefin products at a capacity of 800 tons per year. The metallocene solution process is adopted for production. Focusing on the high-end polyolefin sector, Shenghong Sierbang has prioritized the development of polyolefin elastomers (POE) and high-end ethylene-vinyl alcohol copolymers (high-end EVA), and has planned to build multiple industrial projects as well as pilot-scale production facilities. 800-ton/year POE pilot plant: This plant was successfully commissioned in September 2022 and produced qualified products, achieving full autonomy in POE catalysts as well as the entire production technology. Thanks to this equipment, Silbang acquired extensive practical experience and developed several POE grades, which made it the only company in the country at that time to possess independent production technologies for both photovoltaic-grade EVA and POE, the two main types of photovoltaic film materials. The 100,000 tons per year high-end polyolefin monomer (POE) production facility and related supporting facilities will be constructed by Jiangsu Hongjing New Materials, a wholly-owned subsidiary of Sierbang, and the project will be carried out in two phases. One of the phases involves a POE production facility with an annual capacity of 100,000 tons; this facility utilizes the solution polymerization method along with metalloorganic catalysts developed in-house. It came online successfully in September 2025, and the first batch of high-quality products amounting to 320 tons was delivered at that time. The facility is capable of producing 100,000 tons of POE per year, as well as small amounts of oligomers and fuel oil ； The two-phase plan calls for the construction of a new ethylene oligomerization unit with an annual capacity of 50,000 tons. Once operational, it will be able to produce 33,500 tons per year of 1-octene and 15,600 tons per year of 1-hexene – key monomers required for POE production – thereby ensuring a supply of raw materials for POE manufacturing. Sierbang has built a pilot-scale production project for high-end EVA new materials with an annual capacity of 800 tons (Phase 1). This project is located within its existing factory complex in Lianyungang; it was completed and commissioned in August 2025, and in October of the same year it entered the stage of self-inspection for environmental compliance prior to starting trial production. Its product, ethylene-vinyl alcohol copolymer, is a high-quality, highly barrier material; previously, there were no large-scale manufacturers in the Chinese mainland, leading to a high reliance on imports. This device is the result of the collaboration between Shenghong and the Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Through pilot-scale tests and scale-up studies using 5L reactors, the product samples have met the standards of competing manufacturers.