【Haichuan Equipment Guessing Game】The big guy in the ethylene plant, with a crooked navel

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Question regarding the differences between the quench cooler, quench oil tower, and quench water tower in ethylene plant cracking furnaces: https://bbs.hcbbs.com/thread-1410431-1-1.html (Source: Haichuan Chemical Industry Forum)

You’re amazing! How did you know? ? ------------------------------------------- At 11:20 on January 29, the largest tower equipment in the Sinochem Refining project – the quench oil tower T-101 of the steam cracking unit – was successfully delivered to the construction site. The quench oil tower is one of the core equipment in the chemical plants of the Zhongke project; it has a diameter of 11.5 meters, a length of 46 meters, and a weight of 915 tons, making it one of the largest pieces of equipment in the Zhongke project. Due to the large diameter of the equipment, its excessive weight and size, as well as its center of gravity being positioned far back and offset from the line of gravity, unloading and transporting it posed considerable difficulties. To address this, the construction management department coordinated all parties to work together in accordance with the prepared plan. The shipping company leveraged its expertise and technical advantages to develop optimized plans for unloading and transportation. With a prompt approach and a rapid working pace, it ensured that all preparatory tasks were completed on time or even ahead of schedule. At 18:37 on the 28th, after 2 hours of careful and meticulous work, the quench oil tower was successfully rolled ashore. On the morning of the 29th, after a two-hour slow journey, \"Big Fat Guy\" arrived at the installation site. That same afternoon, the emergency cooling water tower T-103, which arrived on the same ship, was successfully brought ashore.

Questions regarding the quench oil tower: https://bbs.hcbbs.com/thread-338845-1-1.html (Source: Haichuan Chemical Industry Forum)

You could even think of a crooked navel; P

11.5 meters. How did you figure that out?