[Haichuan Overseas Engineering] The high-altitude removal and lifting of the regenerator head for the refinery maintenance project at Dangote Refinery in Nigeria was successfully completed

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The high-altitude removal and lifting of the regenerator head at the Dangote Refinery was successfully completed on December 20. After 17 consecutive hours of hard work, day and night, the project team managed to remove the 1,350-ton heavy regenerator top head along with the cyclone separator components from a height of 60 meters, and install them accurately on a temporary repair framework. The completion of this key milestone marks a significant advancement in the regenerator repair project at the Dangote Refinery. This lifting operation presents numerous challenging tasks, including the welding and heat treatment of the head lugs, the removal of the refractory lining, the cutting of long and deep welds, as well as the lifting of 1,340-ton heavy components at great heights. For the head welds, which are up to 48 millimeters thick and 66 meters long, as well as the hard linings, the project team formed \"double-shift task forces\" to carry out 24/7 cleaning efforts, ensuring seamless progression of the work processes. Furthermore, the team innovatively adopted a \"suspended scaffolding system supported by cyclone separators,\" which effectively solved the problem of a lack of support points for work at heights, demonstrating a high level of technical expertise and engineering adaptability. The lifting operation began at 9 a.m. and continued until 1:30 a.m. the following day. Throughout the process, the team overcame challenges such as strong winds at high altitudes and limited visibility, strictly followed the lifting plan, and achieved millimeter-level precision in the translation and alignment of the thousand-ton components, ultimately completing the installation successfully. The lifting was completed 20 hours ahead of the original schedule, earning high praise from the client. The project team stated that it will use this breakthrough as an opportunity to continue strengthening quality control and technological innovation, accumulate experience in the field of large-scale equipment maintenance, and lay a solid foundation for the progress of subsequent projects.