【Major Chemical Equipment Innovations】150 – The world’s largest first 5 million tons/year PTA oxidation reactor
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Happy May Day! Reply reward! ---------------------------------------------- The past decade has been a period of rapid development in China’s chemical industry, marked by the emergence of many new processes, products, and equipment. There has also been significant progress in China’s chemical processing equipment, which has contributed to the swift advancement of the petrochemical sector. Here, we have compiled some of the achievements and breakthroughs made by Chinese equipment manufacturers in terms of larger-scale production and greater use of domestic equipment. We invite everyone to share their insights and engage in discussions, to cheer for Made in China and to support the development of chemical processing equipment! ****************** On February 22, 2022, Nanjing Mingdi Energy Technology Co., Ltd., a wholly-owned subsidiary of Nanjing Anzhixin Engineering Technology Co., Ltd. which is a member of the China Equipment Supervision Association, successfully completed the task of supervising the construction of the first oxidation reactor for Jiangsu Jiatong Energy Co., Ltd.’s 5 million tons per year PTA project. This project is the world’s largest PTA facility of its kind, and the PTA reactor used in it is also the largest of its type in the world. The construction of the first reactor took over 9 months, with SenSong (Jiangsu) Heavy Industry Co., Ltd. being responsible for its manufacture.
The oxidation reactor included in this shipment utilizes the world’s most advanced PTA Coriolis (formerly Inventa) P8++ technology； The main material is a titanium-steel composite plate of type (SB-265Gr.1+SA-51670), with a thickness of δ(3+76) millimeters. The diameter of the equipment is 11.3 meters, its total length is 21.7 meters, and its weight is 604 tons. The manufacturing of oxidation reactors is characterized by high technical complexity, intricate production processes, and stringent requirements for welding composite panel materials; it also demands high standards for corresponding supervision and inspection coordination efforts. The supervision work involved in this project encompassed the control and inspection of aspects such as the adhesion quality of the titanium-steel composite plate materials through explosive bonding, the control of material cutting and edge trimming, the assembly and welding after the formation of the melon-seed shaped heads, the rolling and assembly of the cylinder body along with the welding of its longitudinal and circumferential seams, as well as the assembly welding between the cylinder body and the heads. In particular, attention was paid to tasks like the welding of titanium strips, the prefabrication of titanium lining tubes, and the welding of titanium internal components. The final inspection and approval prior to shipment were made possible through the hard work of the company’s on-site supervisors and the active cooperation of the manufacturing plant.