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Review of naphthenic acid corrosion in oilrefining

机译:炼油中环烷酸腐蚀研究综述

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摘要

Naphthenic acid corrosion is a major concern for the oil refinery business. While much is now known about the phenomenon, it is still not completely understood because of the complex influences on corrosion of the type of acid and other constituents in the crude oil and the effects of both temperature and fluid flow. A review of this form of corrosion has been undertaken with respect to the role of crude oil composition, temperature, fluid velocity, physical state (vapour or liquid), pressure, and materials of construction. Simple measures of corrosivity based on the total acid or neutralisation number are insufficient. The sulphur content of the crude is important but the extent to which the various sulphur containing compounds act as inhibitors or corrodents is not understood. There is little knowledge also of the nature of films formed on the steel surfaces under operating conditions and the role of natural inhibitors that may be present in crudes requires more attention.
机译:环烷酸腐蚀是炼油业务的主要关注点。尽管现在对该现象知之甚少,但由于对酸的类型和原油中其他成分的腐蚀以及温度和流体流动的影响都具有复杂的影响,因此仍未完全理解。已经就原油成分,温度,流体速度,物理状态(蒸气或液体),压力和结构材料的作用对这种腐蚀形式进行了综述。基于总酸或中和值的简单的腐蚀性度量是不够的。原油的硫含量很重要,但尚不清楚各种含硫化合物起抑制剂或腐蚀剂作用的程度。对于在操作条件下在钢表面上形成的膜的性质也知之甚少,原油中可能存在的天然抑制剂的作用需要引起更多关注。

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  • 来源
    《British Corrosion Journal》 |1999年第2期|125-131|共7页
  • 作者单位

    The Bulgarian Academy of Sciences, Akad. G. Bonchev St, Sofia, Bulgaria;

    Ty Isa, Mold, UK;

    The National Physical Laboratory, Teddington, Middx, UK;

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  • 正文语种 eng
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