CAJ | 학술논문

通过模拟不同的含硫环境，研究了110S在不同含硫环境中的腐蚀行为，并通过SEM、XRD研究了腐蚀产物膜的形貌、组成，并确定不同环境的腐蚀主控因素。研究结果表明：依据NACE RP 0775-2005标准中对腐蚀严重程度的规定，在低含硫（20约PCO2/PH2S<500）、低含硫(PCO2/PH2S<20)、中含硫、高含硫、模拟环境中均匀腐蚀程度属于严重程度，而在特高含硫模拟环境中，均匀腐蚀速率最大，为0.3728mm/a，属于极严重腐蚀。低含硫(PCO2/PH2S<20)、中含硫、高含硫、特高含硫CO2与H2S的分压比小于20，腐蚀产物膜的主要成分为H2S的腐蚀产物，腐蚀主要由H2S控制，低含硫（20<PCO2/PH2S<500）CO2与H2S的分压比大于20小于500，腐蚀产物膜的主要为FeS和FeCO3，腐蚀由H2S和CO2共同控制。
통과모의불동적함류배경，연구료110S재불동함류배경중적부식행위，병통과SEM、XRD연구료부식산물막적형모、조성，병학정불동배경적부식주공인소。연구결과표명：의거NACE RP 0775-2005표준중대부식엄중정도적규정，재저함류（20약PCO2/PH2S<500）、저함류(PCO2/PH2S<20)、중함류、고함류、모의배경중균균부식정도속우엄중정도，이재특고함류모의배경중，균균부식속솔최대，위0.3728mm/a，속우겁엄중부식。저함류(PCO2/PH2S<20)、중함류、고함류、특고함류CO2여H2S적분압비소우20，부식산물막적주요성분위H2S적부식산물，부식주요유H2S공제，저함류（20<PCO2/PH2S<500）CO2여H2S적분압비대우20소우500，부식산물막적주요위FeS화FeCO3，부식유H2S화CO2공동공제。
By simulating different H2S environments, the corrosion behavior was studied and corrosion production was analyzed by SEM and XRD, the main controlling factor was made clearly. The results showed that:according to NACE RP 0775-2005, the uniform corrosion rate is belong to high level in low H2S en-vironment (20<PCO2/PH2S<500)、low H2S environment (PCO2/PH2S<20)、middle H2S environment、high H2S enviro nment, the uniform corrosion rate is belong to severe level in extra-high H2S environment. The CO2/H2S<20 , the main corrosion production is sulphide and corrosion is dominated by H2S in low H2S environment(PCO2/PH2S<20)、middle H2S environment、high H2S environment and extra-high H2S environment, The 20<CO2/H2S<500 the main corrosion production is FeS and FeCO3 , corrosion is dominated by H2S and CO2.