CAJ | 학술논문

石脑油中常含有H2O、H2S和Cl-等，对石油化工的常减压装置具有很强的腐蚀性，易导致常减压装置的腐蚀破坏，给油品车间的安全生产带来隐患。通过XRD、SEM和能谱分析，研究常减压装置石脑油介质中的腐蚀成分和腐蚀形貌。结果表明，酸性石脑油的环境下，腐蚀产物主要是疏松且易脱落的粗晶粒四方硫铁矿FeS1-x和Fe3O4，无法在碳钢表面生成保护膜，形成了大量腐蚀坑。腐蚀机理主要是电化学腐蚀，NaCl等盐会促进腐蚀，H2S的存在有很强的渗氢作用，进一步加剧了腐蚀。
석뇌유중상함유H2O、H2S화Cl-등，대석유화공적상감압장치구유흔강적부식성，역도치상감압장치적부식파배，급유품차간적안전생산대래은환。통과XRD、SEM화능보분석，연구상감압장치석뇌유개질중적부식성분화부식형모。결과표명，산성석뇌유적배경하，부식산물주요시소송차역탈락적조정립사방류철광FeS1-x화Fe3O4，무법재탄강표면생성보호막，형성료대량부식갱。부식궤리주요시전화학부식，NaCl등염회촉진부식，H2S적존재유흔강적삼경작용，진일보가극료부식。
Naphtha often contains H2O, H2S, and Cl-, etc, often pressure-relief device of petrochemical industry has a strong corrosion resistance, easy to cause corrosion and damage, often pressure-relief devices bring oil workshop production safety hidden trouble. By XRD, SEM and energy spectrum analysis, the research often pressure-relief device corrosion medium naphtha composition and morphology of corrosion. Results showed that the acidic environment of naphtha, corrosion products mainly is loose and easy to fall off the coarse grain of square pyrite FeS1-x and Fe3O4, unable to form a protective film on carbon steel surface, forming a large amount of corrosion pit. Electrochemical corrosion, the corrosion mechanism is mainly such as NaCl salt can promote the corrosion, the presence of H2S has a strong hydrogen permeability function, further corrosion.