At the Rongxin project in Inner Mongolia, a 2,000-ton capacity crawler crane was used to lift the first large-scale tower unit, with a net weight of 532 tons: the No. 1 Propylene Distillation Tower (T-2303)

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At 9:17 a.m. on January 13, the lifting of the first large-scale tower unit, the No. 1 Propylene Distillation Tower (T-2303), with a weight of 532 tons, was commenced at the construction site of Inner Mongolia Yankuang Energy Rongxin Chemical’s 800,000-ton olefin project. The net weight of this tower unit is 532 tons. It is understood that the 1# propylene distillation tower to be lifted this time is large in size and presents high technical challenges; it has a diameter of 6.3 meters, a height of 68.4 meters, a net weight of 532 tons, with a total lifting weight of 722 tons. On the day of lifting, with the precise coordination between the main crane of the 2,000-ton class crawler crane and the auxiliary crane of the 450-ton class crawler crane, the equipment was lifted, rotated, and placed in position smoothly over a period of 1 hour and 58 minutes. The installation was successfully completed at 11:15; the entire process was safe, under control, and precise. The successful installation of the No. 1 propylene distillation tower marks an important breakthrough on the project’s critical path, and it also provides valuable experience for the subsequent sectional lifting and welding of larger equipment such as the No. 2 propylene distillation tower.