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What are the differences between domestic and imported ethylene triunit systems? What are the difficulties in localization? Please share

2021-11-27View Original

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What are the differences between domestic and imported ethylene triunit systems? What are the difficulties in localization? Please share
Reply #22021-11-27
It is mainly the operating cycle; the operating cycle of the compressor determines the maintenance schedule for the ethylene plant. Imported compressors can now have a major maintenance cycle every 4 to 5 years, while domestically produced compressors require slightly more frequent maintenance. The main gap in domestic production lies in the stability of compressor quality. The other differences are not significant.
Reply #32021-11-29
According to relevant information, the technology involved in manufacturing ethylene compressors with a capacity of millions of tons is quite complex. Among the three machines, the ethylene compressor is the most difficult. Ethylene compressors were also the last to be localized, and it was not until 2011 that they were used on a million-ton scale in China. The gap compared to imported units exists in every aspect. Process design and machining design, the use of low-temperature materials, and the fault-free operation period are inherent to them. There are also aspects such as the processing and manufacturing of the appearance, as well as the rationality and aesthetics of the piping.
Reply #42021-12-09
Thank you, is there any specific material I can take a look at? As a user, what aspects should be given priority attention during the production process? zhikangzhang@163.com, thank you very much
Reply #52021-12-09
Thank you, is there any specific material I can take a look at? As a user, what aspects should be given priority attention during the production process? zhikangzhang@163.com, thank you very much
Reply #62021-12-09
It covers all the key supervision outlines for petrochemical equipment at Sinopec.

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