The production of qualified nitrogen from the A/B sets of cryogenic tanks in the air separation unit of the Tarim Phase II ethylene project was successfully completed on schedule

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On February 11, in the vast Tarim Basin, the A/B cryogenic tanks of the air separation unit for the Tarim Phase II ethylene project – a project that represents a major advancement in the field of energy and chemical industry – successfully produced qualified nitrogen, marking the completion of this phase of construction. This important milestone represents a significant achievement in the construction process of the Tarim Phase II ethylene plant; it signifies the transition of the facility from the construction phase to the operational phase. As the \"gas supply system\" for ethylene production, the air separation unit is responsible for providing industrial gases such as high-purity oxygen and nitrogen, and its stable and efficient operation is of utmost importance. The completion of the air separation unit means that the key components of the project’s utility systems are now ready for operation, providing strong support for the timely completion and commissioning of the entire ethylene plant as planned. On November 15, 2024, amid the roar of the pile driver, the first pile was driven deep into this land, marking the official start of the physical construction of the project. On November 20, with the formal grooving of the foundation in the cabinet room, the project construction entered a substantive phase. In the vast Gobi Desert, project builders braved sandstorms and extreme cold, advancing with determination and momentum to push forward the construction of the projects steadily and swiftly. Through thorough planning in the early stage, a solid foundation is laid for the efficient progress of subsequent construction. The air separation unit was EPC-general contracted by Kunlun Dalian Branch, comprising 19 individual construction units. The design and construction tasks were complex, the technical standards were high, and coordination posed significant challenges. The main quantities of work include 9.2 kilometers of process piping installation, with a welding equivalent of 46,000 inches; the fabrication and installation of 1 storage tank; the installation of 74 various types of equipment; a total of 1,177 tons of steel structure installation; 177,000 meters of electrical and instrumentation cables laid; and the installation of 554 sets of electrical and instrumentation equipment. Faced with such a massive volume of work and a tight deadline, the project management team coordinated efforts in a scientific manner, optimized resource allocation, and efficiently organized 325 construction workers to work together during the peak construction period, ensuring seamless progression of all tasks.