Additive for naphthenic acid corrosion inhibition and method of using the same
    3.
    发明授权
    Additive for naphthenic acid corrosion inhibition and method of using the same 有权
    环烷酸腐蚀抑制添加剂及其使用方法

    公开(公告)号:US09115319B2

    公开(公告)日:2015-08-25

    申请号:US12677791

    申请日:2008-09-12

    摘要: The present invention relates to the field of processing hydrocarbons which causes corrosion in the metal surfaces of processing units. The invention addresses the technical problem of high temperature naphthenic acid corrosion and sulphur corrosion and provides a solution to inhibit these types of corrosion. The three combination compositions are formed by two mixtures separately, with one mixture obtained by mixing compound A, which is obtained by reacting high reactive polyisobutylene (HRPIB) with phosphorous pentasulphide in presence of catalytic amount of sulphur with compound B which is thiophosphorous compound such as phosphorous thioacid ester of Formula (1) and second mixture obtained by mixing compound A with compound C of Formula (2) which is obtained by reacting compound B with ethylene oxide, wherein each of these two mixtures independently provide high corrosion inhibition efficiency in case of high temperature naphthenic acid corrosion inhibition and sulphur corrosion inhibition. The invention is useful in all hydrocarbon processing units, such as, refineries, distillation columns and other petrochemical industries.

    摘要翻译: 本发明涉及在处理单元的金属表面中引起腐蚀的烃的加工领域。 本发明解决了高温环烷酸腐蚀和硫腐蚀的技术问题,并提供了抑制这些腐蚀类型的溶液。 三种组合组合物分别由两种混合物形成,一种混合​​物通过混合化合物A,其通过使高活性聚异丁烯(HRPIB)与五硫化磷在催化量的硫存在下与化合物B(其是硫代磷酸化合物)反应而获得, 通过将化合物B与通式(2)的化合物C混合而获得的第二种混合物,其通过使化合物B与环氧乙烷反应获得,其中这两种混合物中的每一种独立地提供高的腐蚀抑制效率 高温环烷酸腐蚀抑制和硫磺腐蚀抑制。 本发明可用于所有烃处理装置,如炼油厂,蒸馏塔和其他石化行业。