H2S对碳钢在模拟罐底水中腐蚀行为的影响
Effects of H2S on Corrosion Behavior of Carbon Steel in Simulated Oil Storage Tank Bottom Solution
摘 要
利用腐蚀失重法、电化学测试、扫描电镜（SEM）和X射线衍射（XRD）研究了Q235碳钢在含H2S的模拟罐底水中的腐蚀行为。结果表明：增加H2S含量，可以促进碳钢表面的析氢反应，从而增大了碳钢的腐蚀速率；碳钢表面形成由四方硫化亚铁组成的疏松、多孔的腐蚀产物膜；碳钢先后在含H2S溶液、无H2S且含溶解氧的溶液中进行二次腐蚀后，其腐蚀产物分为两层，内层主要组成依然是四方硫化亚铁，外层为氧化产物，其中氧化产物的生成导致硫化亚铁膜的破裂与脱落；硫化亚铁膜的存在，对碳钢在含H2S溶液中的保护性大于其在含溶解氧溶液中的。
碳钢
硫化亚铁
储罐罐底水
hydrogen sulfide corrosion
carbon steel
ferrous sulfide
oil storage tank bottom solution
Abstract
The corrosion behavior of Q235 carbon steel in simulated solution containing H2S was investigated using the methods of weight loss, electrochemical measurement, scanning electron microscopy (SEM) and X-ray diffraction (XRD). The results show that the increase of H2S concentration promoted hydrogen evolution reaction, so the corrosion rate of carbon steel increased. The loose and porous corrosion products formed on the steel surface were composed of mackinawite. The corrosion products of carbon steel, which was corroded in sequence in the solution containing H2S and in the solution containing dissolved oxygen but without H2S, were divided into two layers. The inner layer was still mainly composed of mackinawite and the outer layer was oxidation product. The oxidation product led to the rupture and shedding of ferrous sulfide film. The existence of ferrous sulfide film provided more protection to carbon steel in the solution containing H2S than in the solution containing oxygen.
中图分类号 TG172 DOI 10.11973/fsyfh-201702009
所属栏目 试验研究
基金项目
收稿日期 2015/10/8
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引用该论文: LI Guang-zhou,CHEN Lin-hua,ZHANG Yao,CHANG Hui,DING Yi,MENG Xian-hu. Effects of H2S on Corrosion Behavior of Carbon Steel in Simulated Oil Storage Tank Bottom Solution[J]. Corrosion & Protection, 2017, 38(2): 129
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参考文献
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【3】董娇,李青蕊. 储罐底板的腐蚀与防护[J]. 广东化工,2013,40:129-130.
【4】王菁辉. 钢质石油储罐防腐蚀工程[M]. 北京:中国石化出版社,2011:6-9.
【5】MA H,CHENG X,LI G,et al. The influence of hydrogen sulfide on corrosion of iron under different conditions[J]. Corrosion Science,2000,42(10):1669-1683.
【6】ARZOLA S,GENESCÁ J. The effect of H2S concentration on the corrosion behavior of API 5L X-70 steel[J]. Journal of Solid State Electrochemistry,2005,9(4):197-200.
【7】TANG J W,SHAO Y W,GUO J B,et al. The effect of H2S concentration on the corrosion behavior of carbon steel at 90℃[J]. Corrosion Science,2010,52(6):2050-2058.
【8】TAHERI H,KAKOOEI S,ISMAIL M C,et al. The effect of H2S concentration and temperature on corrosion behavior of pipeline steel A516-Gr70[J]. Caspian Journal of Applied Sciences Research,2012,1(5):41-47.
【9】QI Y,LUO H,ZHENG S,et al. Effect of temperature on the corrosion behavior of carbon steel in hydrogen sulphide environments[J]. International Journal of Electrochemical Science,2014,9(4):2101-2112.
【10】LI D,ZHANG L,YANG J,et al. Effect of H2S concentration on the corrosion behavior of pipeline steel under the coexistence of H2S and CO2[J]. International Journal of Minerals,Metallurgy,and Materials,2014,21(4):388-394.
【11】ABELEV E,RAMANARAYANAN T A,BERNASEK S L. Iron corrosion in CO2/brine at low H2S concentrations:an electrochemical and surface science study[J]. Journal of the Electrochemical Society,2009,156(9):331-339.
【12】SMITH S N,JOOSTEN M W. Corrosion of carbon steel by H2S in CO2 containing oilfield environments[C]//Corrosion 2006.[S.l.]:NACE International,2006.
【13】MORRIS D R,SAMPALEANU L P,VEYSEY D N. The corrosion of steel by aqueous solutions of hydrogen sulfide[J]. Journal of the Electrochemical Society,1980,127(6):1228-1235.
【14】MEYER F H,RIGGS O L,MCGLASSON R L,et al. Corrosion products of mild steel in hydrogen sulfide environments[J]. Corrosion,1958,14(2):69-75.
【15】SMITH J S,MILLER J D A. Nature of sulphides and their corrosive effect on ferrous metals:a review[J]. British Corrosion Journal,1975,10(3):136-143.
【16】MENENDEZ C M,JOVANCICEVIC V,RAMACHANDRAN S,et al. Assessment of corrosion under iron sulfide deposits and CO2/H2S conditions[J]. Corrosion,2012,69(2):145-156.
【17】LYUBLINSKI E,KUZNETSOV Y I,SCHULTZ M,et al. Corrosion protection of tank product side bottoms[J]. International Journal of Corrosion and Scale Inhibition,2013,2(2):150-161.
【18】VELOZ M A,GONZALEZ I. Electrochemical study of carbon steel corrosion in buffered acetic acid solutions with chlorides and H2S[J]. Electrochimica Acta,2002,48(2):135-144.
【19】FATAH M C,ISMAIL M C,ARI-WAHJOEDI B,et al. Effects of sulphide ion on the corrosion behaviour of X52 steel in a carbon dioxide environment at temperature 40℃[J]. Materials Chemistry and Physics,2011,127(1):347-352.
【20】SHOESMITH D W,TAYLOR P,BAILEY M G,et al. The formation of ferrous monosulfide polymorphs during the corrosion of iron by aqueous hydrogen sulfide at 21℃[J]. Journal of the Electrochemical Society,1980,127(5):1007-1015.
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【22】VEDAGE H,RAMANARAYANAN T A,MUMFORD J D,et al. Electrochemical growth of iron sulfide films in H2S-saturated chloride media[J]. Corrosion,1993,49(2):114-121.
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