【Major Chemical Equipment】510-2022: 167-stage tray column with a diameter of DN10,000 mm for propylene-propane separation

Thread Content

This post was last edited by Desert Fish on 2022-8-24 at 17:24. In June 2022, the propylene-propane separation tower, which is a key piece of equipment for Quanzhou Guoheng’s project involving 660,000 tons per year of propane dehydrogenation and 450,000 tons per year of high-performance polypropylene production, was manufactured and successfully shipped. 　　The propylene-propane separation tower delivered this time has a diameter of DN10,000 mm, a wall thickness of 30 mm, a length of 106.7 meters, and a total weight of 1,300 tons; it contains 167 trays in total. In the manufacturing process, such ultra-large diameter thin-walled disk towers represent the category with the highest construction requirements and the greatest difficulty. To overcome the technical challenges, the entire prefabrication process in the production workshop was carried out at the standard upper limits. After the longitudinal ring welds were completed through horizontal alignment and welding, line marking and welding of the tower segments were performed in a vertical position in order to minimize the ellipticity of the tower. Although the construction was challenging, all process requirements were ultimately met, and all equipment passed the inspections on the first attempt.