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The structure of the ethylene oxide reactor is complex, and the technical and safety factor requirements are extremely high, and the process is difficult. In the past, only a few well-known companies in Japan and Germany were able to manufacture. In the process of undertaking the 180,000-ton/year ethylene oxide reactor domestic research project, Nanhua Chemical Machinery Plant, Sinopec Engineering Construction Company and other relevant units centered around the reactor engineering design, manufacturing technology, domestic material application, and inspection technology. Research and other aspects of research, demonstration, development of large-scale tube plate welding prevention deformation, tube sheet forging process, large-diameter grid manufacturing and grid and tube plate, cylinder group precision control and a number of independent intellectual property manufacturing Process technology fills the domestic gap.
The first domestically produced 180,000-ton ethylene oxide reactor has a maximum diameter of 7 meters, a length of 22 meters, a weight of 820 tons, and a total cost of more than 100 million yuan. On the basis of the successful development of the first equipment, Nanhua Chemical Machinery Factory has also signed six ethylene oxide reactor manufacturing contracts with several domestic petrochemical companies.
Ethylene oxide is an important fine chemical raw material and has a wide range of applications. Due to the limited domestic production capacity, it needs a large amount of imports every year to satisfy the market. The domestic production of ethylene oxide reactors will effectively promote the production of ethylene oxide in China and accelerate the development of the deep processing industry.
The first domestic 180,000 t/y ethylene oxide reactor manufactured by Sinopec Nanhua Chemical Machinery Plant was completed on the 22nd. This achievement has ended the history of long-term dependence on imports of ethylene oxide reactors in the domestic petrochemical industry, which indicates that China's petrochemical major equipment development capability has reached the international advanced level.