What is the function of a quench tower? ?

It is understood that the quench tower of the 800,000 tons per year ethylene plant in the Gulei refining and chemical integration project is 54.75 meters long, 10.6 meters in diameter, and has a net weight of 867 tons. At present, the civil foundation construction for this equipment at the site has passed inspection. To create the best conditions for its installation on site, the Gulai Refining and Chemical Project Department of the Refining and Chemical Engineering Construction Company strictly follows the requirements set by the owner, the general contractor, and other parties, carefully planning the routes for transporting the equipment and determining its placement locations. This approach lays a solid foundation for the modular construction and lifting of the equipment. 　　 Since the project commenced, Shijian Company has closely monitored the arrival time of the equipment, continuously optimized the construction plan, and carried out the civil engineering work for the equipment foundations in advance. To accelerate the overall construction progress, the staff involved started working on the prefabrication of the structure attached to the cooling water tower as well as the process pipelines as early as early September, thereby creating favorable conditions for achieving the goal of having the equipment operational and lit up once the tower is built.

Tender Announcement for Quench Oil Tower and Quench Water Tower of the Gulei Refining and Chemical Integration Project in Zhangzhou, Fujian – Xiangshan Internal Subcontracting – Sinopec Ningbo Engineering Co., Ltd

According to the project leader, starting from mid-October, the equipment ordered for the Gulei refining and chemical integration project will begin arriving at the Gulei heavy machinery port. Among these, there are 222 units of equipment weighing over 80 tons each, with a total weight of more than 40,000 tons.

Modular lifting of the second largest-diameter quench tower at Sinopec Refining & Chemicals – 2019-03-22 Source: Sinopec News Network. Print article. Petrochemical news: Another success for the Sinopec Refining & Chemicals project – the second large-diameter tower unit, with a height of 58 meters, a diameter of 10.2 meters, and a lifting weight of 1,285 tons; namely the quench tower for Sinopec’s 800,000-ton/year ethylene steam cracking unit, was lifted into place starting on March 21. Thus, the modular construction of the two largest-diameter towers in this project – the quench oil tower and the quench water tower – has been completed. The volume of the quench water tower is slightly smaller than that of the quench oil tower, and their lifting weights are similar; the two units are considered \"sibling\" towers. The modular installation of the quench water tower began on February 20th, with a construction period of 30 days. To ensure the safe, high-quality completion of the tower on schedule, all staff from the Zhongke project team of the general contractor for this project, Engineering Construction Company, took charge of the operations, urging suppliers to deliver the urgently needed pipes, electrical equipment, and other materials as soon as possible, so as to avoid any delays or stoppages in work ； Strictly control safety and quality to ensure smooth construction progress ； After each process is completed, the supervision team and the construction party carry out inspections, confirmations, and sign off for acceptance, providing round-the-clock high-quality support for the modular construction of the tower. Shi Jian Company, which is responsible for the installation work, allocated human resources and machinery as planned, organized the construction in a scientific manner. Facing a workload that included more than 100 tons of steel structures and pipelines attached to the towers, 28 sets of lighting fixtures to be installed, 155 cubic meters of insulation material, and 2,326 square meters of protective panels, the company increased the degree of prefabrication, developed detailed plans, assigned tasks to specific teams, and defined responsibilities for individuals. It also organized labor competitions among the construction teams working on the quench oil tower and the quench water tower, encouraging them to learn from one another and strive for excellence. By drawing on the lessons learned from previous construction projects on the quench oil tower, they further optimized the construction plan, resulting in a more efficient and high-quality construction process for the quench water tower. In particular, when it came to the welding of the large pipes at the top of the tower, which were 40 meters long and 1.9 meters in diameter, the welding was carried out quickly and with high quality; the success rate for each welding operation was 100%, which is 1 percentage point higher than the 99% achieved in previous projects on the quench oil tower. Similar to the lifting operation carried out 5 days ago for the quench oil tower with the largest diameter, this lift also employed a lifting plan that involved a 4,000-ton crane for the main lifting effort and a 1,250-ton crane to assist in moving the load. All the staff from Zhongke Large-Scale Lifting, the company responsible for lifting such large structures, were well prepared for this task ； The lifting of the large tower began at 13:17 on the 21st. The operators of the two cranes were highly skilled, and it took just over an hour to erect the tower by 14:37. Subsequently, through close coordination between the heavy-lifting team and the installation crew, the tower was placed in position at 15:47 – two full hours faster than the previous lifting process for the quench oil tower – once again demonstrating the safety, quality, and high technical standards associated with the lifting of large-scale equipment. (Gao Mingliang)

Another success has been achieved in the Sinochem Refining project: the second large-diameter tower unit, the quench water tower for Sinochem’s 800,000 tons per year ethylene steam cracking unit, which is 58 meters high, 10.2 meters in diameter, and weighs 1,285 tons, was lifted into place on March 21 following its modular assembly. Thus, the modular construction of the two largest diameter towers in this project – the quench oil tower and the quench water tower – has been completed. The volume of the quench water tower is slightly smaller than that of the quench oil tower, and their lifting weights are similar; the two units are considered \"sibling\" towers. The modular installation of the quench water tower began on February 20th, with a construction period of 30 days. To ensure the safe, high-quality completion of the tower on schedule, all staff from the Zhongke project team of the general contractor for this project, Engineering Construction Company, took charge of the operations, urging suppliers to deliver the urgently needed pipes, electrical equipment, and other materials as soon as possible, so as to avoid any delays or stoppages in work ； Strictly control safety and quality to ensure smooth construction progress ； After each process is completed, the supervision team and the construction party carry out inspections, confirmations, and sign off for acceptance, providing round-the-clock high-quality support for the modular construction of the tower. Shi Jian Company, which is responsible for the installation work, allocated human resources and machinery as planned, organized the construction in a scientific manner. Facing a workload that included more than 100 tons of steel structures and pipelines attached to the towers, 28 sets of lighting fixtures to be installed, 155 cubic meters of insulation material, and 2,326 square meters of protective panels, the company increased the degree of prefabrication, developed detailed plans, assigned tasks to specific teams, and defined responsibilities for individuals. It also organized labor competitions among the construction teams working on the quench oil tower and the quench water tower, encouraging them to learn from one another and strive for excellence. By drawing on the lessons learned from previous construction projects on the quench oil tower, they further optimized the construction plan, resulting in a more efficient and high-quality construction process for the quench water tower. In particular, when it came to the welding of the large pipes at the top of the tower, which were 40 meters long and 1.9 meters in diameter, the welding was carried out quickly and with high quality; the success rate for each welding operation was 100%, which is 1 percentage point higher than the 99% achieved in previous projects on the quench oil tower. Similar to the lifting operation carried out 5 days ago for the quench oil tower with the largest diameter, this lift also employed a lifting plan that involved a 4,000-ton crane for the main lifting effort and a 1,250-ton crane to assist in moving the load. All the staff from Zhongke Large-Scale Lifting, the company responsible for lifting such large structures, were well prepared for this task ； The lifting of the large tower began at 13:17 on the 21st. The operators of the two cranes were highly skilled, and it took just over an hour to erect the tower by 14:37. Subsequently, through close coordination between the heavy-lifting team and the installation crew, the tower was placed in position at 15:47 – two full hours faster than the previous lifting process for the quench oil tower – once again demonstrating the safety, quality, and high technical standards associated with the lifting of large-scale equipment. (Gao Mingliang)

Quench water tower: A quench water tower is a hollow cylindrical device; inside it, floating valve trays/angle iron trays, corrugated sieve trays, packing, and similar elements are typically installed. The pyrolysis gas from the top of the gasoline fractionation tower enters at the bottom of the quench tower, where it comes into direct counterflow contact with the recycled quench water introduced from the top and middle of the tower, thereby being cooled and partially condensed. The cooled pyrolysis gas is sent to the pyrolysis gas compression section. The condensed gasoline is collected in the bottom of the tower and flows, by gravity, into the oil/water separator. From there, it is pumped by a quench water circulation pump to various users to absorb heat, before returning to the quench tower.