【Ten Years of Rapid Development in Chemical Processing Equipment】The first ammonia cooler with a double U-tube structure in the industry, 2002–2023

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Ten years of rapid development in chemical processing equipment – praise for China’s prosperity and strength. This is just a starting point; more participation from everyone will make things even more lively. Haichuan becomes even better with your involvement; we welcome everyone to join in the forum discussions. Be careful of fire hazards due to the high temperatures in July. ********************************************* In January 2023, Dongfang Electric Group’s Dongfang Boiler Co., Ltd. successfully shipped and delivered the industry’s first ammonia cooler with a dual U-tube structure. This device enables the heat exchange efficiency to be increased by at least half, marking another step forward for Dongfang Boiler in the field of high-end chemical processing equipment. Currently, in the industry, coolers generally adopt a single-tube system design. In this project, the single-tube system structure was insufficient to meet the heat exchange requirements; for the first time, a double-tube system structure was used, resulting in a heat exchange efficiency that is at least twice as high. This equipment has large external dimensions, thin cylinder walls, numerous and complex manufacturing processes, making integration quite difficult. The equipment is approximately 17 meters in length and has an inner diameter of 1.6 meters. Dongfang Boiler formulated a production plan based on reverse sequencing requirements, focusing on monitoring and accelerating the production of supporting components. It paid close attention to key processes such as the fabrication of the shell, piping components, and sealing welds, ensuring seamless handover between workstations and the concurrent execution of multiple processes, thereby enabling 24/7 continuous production and successfully achieving the targets set for each manufacturing stage.