【Ten Years of Rapid Development in Chemical Engineering Equipment】2245–2025: The World’s First Intercooling System for a Megawatt-Class Power Unit with Five Towers Integrated Together

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Let’s give praise and support to the achievements made in China’s chemical engineering technology and equipment; your participation in discussions is the greatest encouragement. **********************【Ten Years of Great Development in Chemical Engineering Equipment】Continuous updates and summaries are available; feel free to join the discussions: https://bbs.hcbbs.com/thread-3576046-1-1.html ***************** At 7 p.m. on March 5th, the world’s first million-kilowatt power unit featuring five towers combined – Unit 1 of the Huaneng Zhengning 2×1000 megawatt peak-shaving coal-fired power project – successfully completed its 168-hour full-load trial operation, with all performance indicators exceeding the design standards. This important milestone laid a solid foundation for the unit to begin generating electricity once it is connected to the grid. The indirect air-cooling tower system for the project’s steel structure was constructed by Shuangliang Energy Saving EPC. Full-process supervision was carried out throughout the construction of the main body of the intercooling tower, as well as during the installation, commissioning, and trial operation of the intercooling system equipment, thereby providing a solid guarantee for the smooth commissioning of the unit. The Huaneng Zhengning project is located in Zhengning County, Qingyang City, Gansu Province. It serves as a key power source for the \"Longdian to Shandong\" project, and it is also one of the major projects designated for implementation in accordance with the 14th Five-Year Plan and the Plan for Ecological Protection and High-Quality Development of the Yellow River Basin. It is reported that through integrated planning, construction, and operation of wind, solar, thermal, and storage resources, this project will involve the development of 4 million kilowatts of coal-fired power capacity for peak-shaving purposes, 6.5 million kilowatts of wind power capacity, 4 million kilowatts of solar power capacity, and 1 million kilowatts (for a 2-hour storage period). Once completed, it will be able to generate 40 billion kilowatt-hours of electricity per year for transmission outside the area. One of the highlights of this project is the use, for the first time, of a steel-structure indirect air cooling system featuring a \"five-tower integration\" design that combines the main unit system, auxiliary unit systems, desulfurization absorption towers, the original flue ducts of the CCUS system, and the chimney. The project was constructed by Shuangliang Energy Saving, and it incorporates 9 innovative features including the \"five-tower integration\" design, an internal skinning technique, and an external reinforcement ring technique. The total height of the steel structure intercooler tower is 190.5 meters. The radiators are arranged vertically around the outside of the intercooler tower; the radiators for the main units and those for the auxiliary units are arranged in layers to enable combined cooling, with the auxiliary unit radiators located below those of the main units. This design offers significant advantages such as low construction costs, reduced land usage, a short construction period, lower safety risks, high residual value recovery potential, good seismic performance, and being environmentally friendly with no pollution. During the construction of the indirect air cooling system for the steel structure of Unit 1, the flushing and commissioning of this cooling system, as well as the 168-hour trial operation period, the Shuangliang project team worked together with great determination to overcome various difficulties. They closely cooperated with the owner’s team in carrying out supervision and control, organized tasks efficiently, mobilized all available resources, and ensured that all scheduled milestones were met on time. This project received high praise from the owner, supervisors, commissioning teams, and other parties involved.