Core Viewpoint - China National Offshore Oil Corporation (CNOOC) announced the completion of the Dasha Petrochemical Integration Project in Ningbo, Zhejiang, marking it as the largest petrochemical industrial base in China, which is significant for enhancing the efficient conversion of heavy oil and improving the self-sufficiency of high-end chemical materials [1][4]. Investment and Project Details - The total investment for the Dasha Petrochemical Project is 21 billion yuan, with its core production facility utilizing domestically developed technology for the direct cracking of heavy oil into chemical products, achieving a 100% domestic production rate [4]. - The project focuses on enhancing resource utilization efficiency and the value of the industrial chain, transitioning from traditional fuel production to high-end chemical new materials [4]. Production Capacity and Environmental Impact - The core facility has a capacity of 3.2 million tons per year for catalytic cracking, producing 1.2 million tons of polymer-grade ethylene and propylene annually, making it the largest single unit for direct conversion of heavy oil to olefins in China [4][6]. - The project is expected to reduce carbon dioxide emissions by 200,000 tons annually and lower unit product energy consumption by over 30% compared to traditional methods, providing a new pathway for low-carbon transformation in refining enterprises [6]. Technological Innovations - The project team developed a unique "upside-down lining construction technology" to address challenges in the installation of the reactor and regenerator, which have the largest head diameter in the country [6]. - The innovative lining materials and segmented pouring process significantly reduced construction time by 90 days, setting a new benchmark for the shortest installation period for large petrochemical equipment in China [6].