Domestic First 450,000 Tons/Year Polypropylene (PP) Compounding Extrusion Pelletizing Unit Passes Factory Acceptance Test

Building the "Nation's Heavy Artillery"Create maximum value for customers

Recently,CNPC Group Dushanzi Petrochemical CompanyTarim 1.2 million tons/year Phase II Ethylene ProjectThe domestically developed first set of 450,000 tons/year polypropylene compounding and extrusion granulation unit.Factory acceptance was completed at the Yingchengzi site of Dalian Heavy Industry Plastic and Rubber Equipment Group Co., Ltd.

Evaluated by the expert panel

The first domestically produced 450,000 tons/year polypropylene compounding extrusion pelletizing unit features a reasonable overall layout and good exterior quality; the technical indicators such as cold and hot state tests and performance tests of the unit all meet the requirements; the provided acceptance documents are complete and data reliable, conforming to the factory acceptance criteria, and the unit is hereby approved for release.

The Dushanzi Petrochemical Tarim 1.2 million tons/year Phase II ethylene project is a demonstration project by China National Petroleum Corporation to practice green and low-carbon development, leverage the integrated advantages of upstream and downstream sectors, and lead the high value-added comprehensive utilization of resources. It is a "model project" promoting the transformation and upgrading of refining and chemical businesses, achieving high-quality development. The large extrusion pelletizing unit is a key core equipment of the project, and its localization carries the strategic mission of solving the country's major equipment "bottleneck" issues. After 14 months of effort, the first set of 450,000 tons/year polypropylene compounding extrusion pelletizing machine was successfully delivered, while the other two 450,000 tons/year full-density polyethylene extrusion pelletizing machines have also entered the final assembly stage, making the last sprint toward unit delivery.

As China’s first domestic 450,000-ton-per-year polypropylene blended extrusion pelletizing unit, its development successfully overcame multiple technical challenges, effectively enhancing the unit’s advancement, stability, and reliability. This laid a solid foundation for the unit’s long-term optimal operation, significantly reducing costs compared to similar imported equipment and shortening the delivery cycle by more than six months. The delivery of this breakthrough product fills a domestic gap and fully demonstrates the company’s sense of responsibility and technical strength in advancing the localization of major core equipment. It marks a key milestone in China’s transition from “following” to “running alongside” in the design, manufacturing, and integration of large blended extrusion pelletizing units, and takes a crucial step toward “leading.” This achievement greatly promotes the independent development and localization of China’s high-end polyolefin major equipment, enhances the resilience and security of the national industrial and supply chains, and lays a solid technical and equipment foundation for subsequent large-scale ethylene and polypropylene projects in China. It holds significant industry-leading and exemplary value.