[Haichuan Project Update] Hengli Petrochemical’s No. 2 xylene tower has been lifted into place
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At 8:27 a.m. on the 20th, the main crane of the MYQ type 5000-ton gantry crane – one of CNPC’s top ten advanced equipment – and the LR11350 type 1350-ton crawler crane were used to lift the structure; employing the \"hydraulic lifting method\", it took approximately 5 hours and 36 minutes to successfully transport the 1836-ton 2# xylene tower T-5103, which is part of the No. 1 aromatic compounds processing unit in Hengli Petrochemical (Dalian)’s 20 million tons per year integrated refining and chemical processing plant, to its designated location.
This tower crane weighs 1,836 tons, is 91 meters tall and has a diameter of 10 meters; it represents the first time that CNPC has carried out the overall lifting of a structure of this hundred-meter scale.
This lifting operation used SG1 conditions, with 11 tower sections on each side, a beam span of 28 meters, and an installed height of nearly 140 meters.
The xylene tower has a diameter of 10 meters and a length of 87 meters, with a net weight of 1,340 tons. It was the first of the 10 towers in Hengli Petrochemical’s oversized tower project to be delivered, and it is also the largest custom-made equipment ever manufactured and shipped by the company. The tower is prefabricated in nine sections, including seven main sections and two skirt sections. At present, the seven-segment main structure has been assembled and the internal components have been installed; once the ring welds are completed, filling with water can begin to prepare for the hydrostatic test, while simultaneously the skirt base is welded together.
On October 31, 2017, the Equipment Manufacturing Branch successfully completed the vertical-to-horizontal lifting operation for the seventh section of the xylene tower in the Hengli Petrochemical Tower Project, thereby completing the assembly of the first main structure section of the xylene tower.
And there’s also this big item: [HaiChuan Project Information] The 2,100-ton 1# Xylenes Tower for the Dalian Hengli Petrochemical Project has been delivered and shipped. https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1937757 (Source: HaiChuan Chemical Industry Forum)
The xylene tower is assembled and welded in segmented horizontal sections, with vertical heat treatment carried out after the circumferential welds are completed. What was lifted this time were the fourth and sixth sections of the xylene tower; the sixth section has a diameter of 10 meters, a length of 12 meters, and a weight of 205 tons, making it the most difficult section to lift in this project. The heavy weight of the tower and site constraints pose challenges to lifting operations; therefore, the positioning of cranes and equipment is extremely important. To ensure absolute safety during the lifting process, the branch company’s lifting technicians developed a detailed lifting plan, and the project team held numerous meetings prior to the lifting to discuss various aspects, striving to meet the highest standards in terms of technology and safety.