The topping-out of the 100-meter-high chimney for the MTO unit of Ningxia Baofeng’s 500,000 tons per year coal-to-olefins project was successfully completed

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On November 15, the topping-out of the 100-meter-high chimney for the MTO unit of Ningxia Baofeng’s 500,000 tons per year coal-to-olefins project was successfully completed. This topping-out marks a milestone achievement in the project construction, laying a solid foundation for subsequent equipment installation and commissioning. This chimney is 100 meters tall and serves as a key component of the MTO facility. Both its foundation and the main cylindrical wall are constructed from reinforced concrete. The cylinder has a variable diameter: its maximum outer diameter at the bottom is 6.98 meters, while the minimum outer diameter at the top is 3.18 meters. Due to its height and structural characteristics, it is classified as a highly hazardous construction project. To overcome these technical challenges, the project team established specialized technical groups that worked together with experienced teams to conduct simulation tests. Specialized plans were developed by drawing on the experience of similar construction projects, and a dual assessment system based on both theoretical knowledge and practical skills was implemented for the workers, to ensure that everyone mastered the construction procedures and emergency response skills. During construction, a derrick-assisted formwork technique along with a combination of external sliding formwork and internal folding formwork was employed, enabling the project to be completed efficiently within 60 days while achieving \"zero safety incidents and zero quality issues\" throughout the construction process.