【Major Industrial Equipment in the Chemical Industry】081 – The world’s first and largest-proDUCTION-capacity propane dehydrogenation product separation tower
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The past decade has been a period of rapid development in China’s chemical industry, marked by the emergence of many new processes, products, and equipment. There has also been significant progress in China’s chemical processing equipment, which has contributed to the swift advancement of the petrochemical sector. Here, we have compiled some of the achievements and breakthroughs made by Chinese equipment manufacturers in terms of larger-scale production and greater use of domestic equipment. We invite everyone to share their insights and discuss these topics together; let’s cheer for Made in China and support the development of chemical processing equipment! *********************************** On November 26, 2019, the world’s first and most capacity-heavy product separation tower for propane dehydrogenation, manufactured by China State Construction Engineering Corporation, was successfully assembled at a height of 100 meters! In Qingdao’s **Circular Economy Demonstration Zone, around 1,600 tons of crawler cranes are at work, while four-column twelve-axis full-rotation hydraulic flatbed trucks move back and forth. The tubular sections lifted by tower cranes are transported after being elevated, then lifted into place, assembled at height, and finally welded and installed.
The separator tower resembles a giant, segmented \"bamboo stalk\"; the processing of each segment of this \"bamboo tube\" must be carried out on the ground first, before they are assembled one by one in vertical space. The construction process becomes increasingly difficult as the height increases. In the past, such equipment could be fabricated in sections at the China State Construction Fifth Continent Equipment Manufacturing Factory, which is part of China State Construction Installation, before being transported to the project site for assembly and welding. However, due to the large size of the 12-meter-diameter \"bamboo shafts\", the transportation costs would increase by tens of millions of yuan. Once all seven sections of these \"bamboo tubes\" had been fabricated, the final lifting operation at great heights would be required; the strong winds at that altitude would cause the sections to swing significantly, making lifting and alignment even more difficult and having a more pronounced impact on the quality of the welds. The project team employed methods such as using chain blocks for fixation, adjusting misalignments and edge discrepancies, tuning the alignment gaps, conducting inspections with a theodolite, and installing, assembling, and welding the platform, in order to ensure the final accuracy of alignment and verticality of the product; all 7 cylinder sections were successfully welded in a single attempt.
More people are welcome to participate in the relevant discussions. Click on the blue link to access it: The 【HaiChuan Equipment Guessing Game】 series is being updated continuously in 2022; all Hai friends are invited to join actively! https://bbs.hcbbs.com/thread-2079686-1-1.html (Source: Huahai Chuanliu – Haichuan Chemical Industry Forum) Summary post on the series 【Major Equipment in the Chemical Equipment Industry】 https://bbs.hcbbs.com/thread-3312079-1-1.html (Source: Huahai Chuanliu – Haichuan Chemical Industry Forum) Summary post discussing the components of cracking furnace equipment for 【Ethylene Cracking】 https://bbs.hcbbs.com/thread-3308724-1-1.html (Source: Huahai Chuanliu – Haichuan Chemical Industry Forum)
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