The steel dome of the 120,000-cubic-meter low-temperature ethane storage tank, weighing 540 tons, was smoothly raised as part of the Sinopec Ethane Cracking Upgrade and Feedstock Structure Optimization project in Shanghai

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At 10:20 on April 14, at the site of the Shanghai Sinopec Ethane Cracking Upgrade and Feedstock Structure Optimization project, which is under EPC general contracting by Ningbo Engineering Company, a steel dome with a diameter of 72 meters and a total weight of 540 tons was lifted smoothly under air pressure, and was placed precisely on top of the 120,000 cubic meter low-temperature ethane storage tank. The project includes 1 low-temperature ethane tank with a capacity of 120,000 cubic meters, 1 low-temperature LPG tank with a capacity of 50,000 cubic meters, 1 low-temperature ethylene tank with a capacity of 50,000 cubic meters, as well as supporting auxiliary systems. Once completed, it will help the Sinopec Ethylene Plant in Shanghai diversify its raw material sources, thereby improving quality and efficiency and accelerating transformation and upgrading on the new journey of promoting high-quality development through a second round of innovation. The lifting of the 540-ton dome this time used the \"pneumatic jacking\" method. The fan continuously supplies air into the sealed tank, and the overpressure generated inside the tank acts evenly on the bottom surface of the dome. When the upward force exceeds the weight of the structure plus the frictional resistance of the tank walls, the dome begins to rise steadily along the tank walls. The lifting speed is controlled to the millimeter level, the deviation angle is kept within a very small threshold; there is no need for correction throughout the process, and the task is completed in one go.