Suggestions for material selection in refineries
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For areas subject to low-temperature corrosion, carbon steel is the material of choice, and corrosion protection is achieved primarily through processing methods. If the corrosion is severe, higher-grade materials such as 304, 316, duplex steel, and Monel can be considered. However, when using sensitized austenitic stainless steels, it is important to take into account the effects of harmful anions such as chloride ions, in order to prevent pitting or stress corrosion cracking. For high-sulfur, low-acid crude oils, corrosion at high temperatures is primarily caused by sulfur at high temperatures; the selection of materials should be based on field experience and the API 581 standard, with reference to the McConomy curve. For material transfer pipelines, medium temperature
According to the \"Guidelines for Material Selection in the Processing of Sulfur-Containing Crude Oils,\" when coking units process high-sulfur, low-acid crude oils, corrosion at high temperatures is primarily caused by sulfur at high temperatures; the temperature of the medium is relevant here
Material selection for pipelines: http://bbs.hcbbs.com/viewthread.php?tid=162022&highlight=%D1%A1%B2%C4 Material selection for pressure vessels: http://bbs.hcbbs.com/viewthread.php?tid=396018&highlight=%D1%A1%B2%C4 Material selection for typical pressure pipelines in chemical plants: http://bbs.hcbbs.com/viewthread.php?tid=314692&highlight=%D1%A1%B2%C4