【Major Industrial Equipment in the Chemical Industry】201 – Ten years ago, a gas-phase reactor for refining was assembled at a dock in Quanzhou, Fujian
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This post was last edited by Desert Fish on 2022-5-11 at 19:00. The gas-phase reactor from Quanzhou, Fujian, weighing 370 tons, measuring 43 meters in length and with a maximum diameter of 7 meters, was successfully launched into the sea at Maoming Petrochemical Port’s 20,000-ton bulk cargo terminal. It is understood that this is the heaviest piece of equipment to be loaded and unloaded at the general cargo terminal of Maoming Petrochemical Port Branch this year. The gas-phase reactor was constructed by Maoming Gravity Company and delivered to the port’s warehouse in four sections in November 2011, where it was assembled outdoors with the assistance of several large cranes at the port facility.
4 cranes are involved in the assembly @ZhiZheMing @ShuTong
This post was last edited by Shutong on 2022-5-10 09:02. I see that this company lacks port cranes. The fact that the lifting was successful in this way shows there must be an expert in crane operation involved! Two-machine lifting is quite common, and it requires unified command as well as coordinated actions; if one machine loses its load-bearing capacity, the other one will have to bear an excessive load, which is quite dangerous. Moreover, the distance between the two lifting components must be greater than five meters. Lifting with four machines is relatively rare and extremely dangerous! For amounts over 300 tons, we first select candidates from the expert database in Inner Mongolia; the plan is subject to review, evaluation, and calculation by experts within that database.
Several points need to be clarified: 1. It should be stated that Maoming Gravity Company has the capability to manufacture large-scale reactors as a whole； 2. It shows that Maoming Gravity Company has the capability to manufacture large-scale plate-welded reactors as a whole ； 3. It is indicated that the transportation route between Maoming Gravity Company and the Miscellaneous Heavy Goods Terminal of Maoming Petrochemical does not have the capacity to transport large-scale reactors; this may be due to the load capacity of roads and bridges being below 370 tons, or issues such as the radius of curvature or width of the roads, or perhaps the clear height of the roads being less than around 8.5 meters. 4. It is noted that Maoming Gravity Company has built a large-scale equipment manufacturing workshop at the Maoming Petrochemical General Cargo and Heavy Goods Terminal, which includes an ultra-large heat treatment furnace.
If Maoming Gravity Company is to achieve further growth, it is necessary to thoroughly address the issue of improving the capacity of transportation routes between Maoming Petrochemical’s various cargo and heavy-load docks, in order to overcome these bottlenecks. Of course, that was ten years ago; I wonder how Maoming Gravity Company is doing these days?
The news report stating that “the reactor was successfully launched at the heavy-lift dock” does not match the photos provided. The photo shows the reactor during its manufacturing process in a workshop located at the dock (presumably for weld heat treatment). A heavy-lift dock should be equipped with large cranes; moreover, it is clearly impossible to use the few truck cranes shown in the picture to load and unload 370-ton heavy equipment.
This post was last edited by Wise Ming on 2022-5-10 at 11:54. The Maoming Petrochemical General Cargo and Heavy Goods Terminal indeed does not have heavy lifting equipment such as large cranes; ship cranes need to be installed according to the loading and unloading requirements. The attached image shows the unloading at the Maoming Petrochemical Heavy Goods Wharf, in November 2014, of the tubular reactor for BASF’s isononanol production project in Maoming. This equipment weighed 374.2 tons in total and was 60.4 meters long.
This was ten years ago; back then there were no large cranes available, and it was only with the guidance of experienced people that such work could be carried out. It shows just how difficult it was to achieve localization at that time. Now that conditions are better, doing such things seems a bit risky and violates regulations. Perhaps these large cranes have become an essential asset for this factory. @WisdomShine
Several points have been analyzed correctly. The fourth point is that there is no transportation capacity from the factory to the dock, so assembly can only take place at the dock; the blue structures are likely to be sheds used for welding
So it is assembled at the dock, and the lifting should be done as shown in your illustration
Equipment manufacturing plants do not use truck cranes; they rent temporary ones for equipment assembly and welding.