The preliminary review meeting for the Pre-feasibility Study Report on the Transformation and Upgrading Project of Ethylene Production at China National Petroleum Lanzhou Petrochemical Company was successfully concluded

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Recently, the preliminary evaluation meeting for the \"Pre-feasibility Study Report on the Ethylene Transformation Project for the transformation and upgrading of China National Petroleum Corporation Lanzhou Petrochemical Company\" was successfully held jointly by the company’s refining and chemical division and its new materials subsidiary. This marks the completion of a key stage in the evaluation process for this major project that is crucial to the fate of the enterprise as well as to the structure of the chemical industry in the western region. The project is located in the Xigu Chemical Industry Park in Lanzhou City, and involves the renovation of the Xigu refinery area and the chemical plant area. With a total investment of around 23.17 billion yuan, the renovation plan for this project can be divided into three parts: 1. For the ethylene section, a new 1.2 million tons per year ethylene cracking + quenching unit will be built, along with a new 800,000 tons per year separation system (including cracking gas compression units, ethylene compression units, and propylene compression units). The existing 460,000 tons per year ethylene separation system (also comprising cracking gas compression units, ethylene compression units, and propylene compression units) will continue to be used, while the current 240,000 tons per year ethylene production facility will be shut down. This will result in an ethylene production system with a capacity of 1.2 million tons per year, structured as “one end and two ends”. 2. After the implementation of the refinery renovation project, the types of crude oil processed and the processing volume in the refinery system remain unchanged. By carrying out adaptive modifications to the existing three units—namely, the 1.2 million tons per year catalytic cracking unit, the 3 million tons per year diesel hydrogenation unit, and another 1.2 million tons per year diesel hydrogenation unit—the goal is to increase the supply of raw materials for ethylene production. At the same time, a new PSA unit and a carbon dioxide recovery unit will be built in the refining area. 3. Seven new chemical production units will be built as part of the downstream chemical industry infrastructure (20,000 tons per year of octene-1, 100,000 tons per year of POE, 140,000 tons per year of EVA, 450,000 tons per year of fully dense polyethylene, 400,000 tons per year of polypropylene, 700,000 tons per year for the hydrogenation of cracked gasoline, and 700,000 tons per year for aromatic extraction); meanwhile, one of the production lines of the existing 170,000 tons per year high-density polyethylene plant will be converted into a plant for producing ultra-high molecular weight polyethylene at a capacity of 60,000 tons per year.