[Ten years of development of chemical equipment] Domestic polypropylene vertical hydrogen presses passed acceptance inspection from 2013 to 2021

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Chemical science and technology has developed greatly in the past ten years, praising China's prosperity and strength. It is more lively and more exciting with everyone's participation. Everyone is welcome to participate in the forum to communicate and discuss. The July fire, pay attention to fire prevention. The propylene device. The hydrogen compressor is a pressurizing device for polypropylene molecular weight regulator, and is one of the key equipment of the ring-pipe polypropylene (STPP) device. This compressor is specially used to transport flammable and explosive media. It has very high sealing safety requirements and has long relied on imports. In response to the "stuck" problems of imported hydrogen compressors such as long supply cycles, high procurement costs, and expensive spare parts, my country has initiated research and development projects on the localization of major equipment for vertical hydrogen compressors for polypropylene devices since 2018. On March 31, 2021, the "Polypropylene Device Vertical Hydrogen Compressor" localization research liaison group, led by Sinopec Engineering Construction Company and participated by Sinopec Materials and Equipment Department, Hainan Refining and Chemical, and Zhejiang Qiangsheng Compressor Manufacturing Co., Ltd., was established in Wenzhou City, Zhejiang Province, and began to carry out localization research. After half a year of design and development, the test was successful on October 22, 2021, and reached the factory acceptance conditions, successfully breaking the long-term monopoly of hydrogen compressors in propylene plants by foreign companies. * * It has improved the manufacturing capacity of domestic hydrogen compressors, effectively solved the localization problem of small vertical hydrogen compressors, provided a strong guarantee for the equipment supply of Hainan Refinery's million-ton ethylene project, and reduced the equipment procurement cost of the ethylene project. According to reports, the unit has a number of independent intellectual property rights and high manufacturing process standards. For example, the crankshaft is integrally forged and designed with no oil holes. ； Cylinder integrally forged ； The crankcase shaft extension end is designed with a mechanical seal structure, which can reduce wear and increase the nitrogen-filled protective sealing performance of the crankcase. From design to production, this unit broke foreign technology monopoly and made positive contributions to my country's equipment technology in the field of polypropylene equipment.