[Haichuan Engineering News] 4,800-ton gantry hydraulic jacking system used to lift the ethylene tower in the Tarim Ethane and Ethylene project
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This post was last edited by Desert Fish on 2020-8-22 at 18:32. At the lifting site, a set of 93-meter-high portal towers was installed; each tower was equipped with a square steel bar, as well as a set of 400-ton jacks and power jacks. In total, 2 pieces of 400-ton jacks were used, enabling a lifting capacity of 800 tons. For the lifting of the ethylene tower, a 4,800-ton gantry hydraulic jacking system was used as the main lifting device, while a 400-ton crawler crane was employed for lifting the tail section. The ethylene tower to be lifted this time is 75.9 meters tall, weighs 492 tons, and has a diameter of 5 meters. To reduce the risks associated with working at heights, all construction work related to pipelines attached to the tower, insulation measures, electrical instruments, and safety platforms is carried out on the ground.
At 1:30 p.m. on August 3, at the construction site of the Tarim Ethane to Ethylene project in the Petroleum and Petrochemical Industrial Park of the Shangku High-Tech Zone in Korla City, the lights came on in the ethylene tower following six and a half hours of continuous lifting operations.
The ethylene tower is a oversized equipment unit; it is the heaviest, tallest, and largest in diameter among all the towers used in ethylene production facilities. The lifting of this ethylene tower was carried out by China National Petroleum Corporation Sixth Construction Company. The lifting system used was the state-of-the-art \"Carrom\" hydraulic intelligent lifting system available in the world today; the entire lifting process was controlled by a computer, with real-time monitoring of data, allowing for precision in the levelness and verticality of the lift to within millimeters.
The quench tower is 61.7 meters tall, with a diameter of 7.2 meters; its total weight is 449 tons. After being equipped with necessary components, its lifting weight becomes 480 tons. The lifting was carried out using a holistic lifting method, enabling it to be placed in position in one go. The lifting operation made use of a climbing hydraulic jacking system unique to Huanqiu Sixth Construction Company. This system is entirely controlled by computers, and it is capable of performing various functions such as intelligent synchronized lifting, operational locking, process display, fault detection, as well as digital control of forces and the deformation of the tower. It represents a modern intelligent lifting device that integrates mechanical, electrical, hydraulic systems, sensors, computers, and control technologies. The main lifting power of this system is provided by 2 climbing hydraulic jacks mounted on the steel beams on both sides; it can achieve a maximum lifting height of 160 meters and a maximum lifting capacity of 4800 tons. Compared with similar lifting equipment, the 4800-ton hydraulic jacking system features a simple structure, light weight, small footprint, and reduced usage of slings, giving it unique advantages in lifting ultra-high and ultra-heavy equipment as well as large-scale steel structures. Taking into account the large size and heavy weight of quench water towers, the hydraulic lifting system enables millimeter-level fine adjustment as well as precise vertical positioning in mid-air by monitoring real-time images and relevant data, thereby achieving the goal of promoting \"intelligent\" lifting through information technology.
Sichuan Petrochemical’s ethylene glycol plant successfully completed the lifting operation 5,627 views Source: China Petroleum News Center, August 9, 2011 Bookmark According to Sinochem News, on August 2, the heaviest equipment in the chemical processing unit of Sichuan Petrochemical’s integrated refining and chemical project – the ethylene oxide reactor, which is used to produce 360,000 tons of ethylene glycol per year and weighs 760 tons – was lifted successfully after two hours of intense effort. For lifting, a 4800-ton gantry hydraulic jacking system is used as the main lifting device, with a 400-ton crane serving as a backup; this not only saves labor and resources but also increases the safety factor of the lifting operations.
The Changqing ethane-to-ethylene project, which is being constructed simultaneously, employs a segmented lifting method. [In-depth Discussion on Haichuan’s Modular Construction Methods] The ethylene tower of the ethylene production unit in the Changqing ethane-to-ethylene project was lifted in three segments: https://bbs.hcbbs.com/thread-3073825-1-1.html (Source: Huahai Chuanliu – Haichuan Chemical Industry Forum Website)
If it can be widely adopted, it seems to have advantages over crawler cranes: lol
It seems that the mobile factory model was also utilized for on-site welding