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Naphthenic acids, total acid number and sulfur content profile characterization in Isthmus and Maya crude oils

机译:地峡和玛雅原油中的环烷酸,总酸值和硫含量分布特征

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摘要

In order to understand the origin of the corrosive behavior presented in the Atmospheric/Vacuum Distillation Unit in the Salina Cruz Refinery, Mexico, where a 90/10 Isthmus/Maya crude blend is processed, distributions of sulfur content and total acid number along the distillation curves of the Maya and Isthmus crude oils were performed. Naphthenic acids characterizations for both crude oils are also presented. According to our results, the Isthmus crude oil may be more corrosive than the Mayan crude oil, apparently due to the presence of low molecular weight naphthenic acids and very low sulfur contents observed in the fractions distilled at temperatures below 200 deg C. The occurrence of this type of acids and the lack of a protective sulfur film might be the reason for this behavior. Nevertheless, other factors like salt content or equipment metallurgy should be considered before giving a final conclusion.
机译:为了了解在墨西哥萨利纳克鲁兹精炼厂的大气/真空蒸馏装置中呈现的腐蚀行为的起源,在该处加工了90/10的地峡/玛雅原油混合物,在蒸馏过程中硫含量和总酸值的分布对Maya和地峡原油进行了曲线分析。还介绍了两种原油的环烷酸表征。根据我们的结果,地峡原油可能比玛雅原油更具腐蚀性,这显然是由于在低于200摄氏度的温度下蒸馏出的馏分中观察到低分子量的环烷酸和非常低的硫含量。这种类型的酸和缺乏保护性的硫膜可能是造成这种现象的原因。然而,在得出最终结论之前,应考虑其他因素,例如盐含量或设备冶金学。

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