输油管道腐蚀垢样中硫酸盐还原菌对Q235钢腐蚀行为的影响
Effect of Sulfate Reducing Bacteria from Corrosion Scale of Oil Pipeline on Corrosion Behavior of Q235 Steel
摘 要
取某输油管线腐蚀管垢进行硫酸盐还原菌（SRB）的富集培养，并测量SRB在生长周期内H2S含量变化趋势。采用腐蚀挂片和电化学试验研究了Q235钢在接种SRB溶液及无菌溶液中的腐蚀行为，并对腐蚀挂片表面形貌和产物进行了分析。结果表明：某输油管线中存在SRB，细菌代谢过程中产生了H2S气体，增加了管线钢硫化物应力腐蚀开裂的可能性；SRB导致Q235钢局部腐蚀严重，使得钢片表面腐蚀形式由轻微不非均匀腐蚀向严重局部腐蚀转变；SRB代谢产物主要为含硫化合物，这可能是诱发钢片局部腐蚀萌生的主要原因。
Q235钢
腐蚀
sulfate reducing bacteria
Q235 steel
corrosion
Abstract
Sulfate reducing bacteria (SRB) from corrosion scale were cultured and the change trend of H2S from the solution with SRB in the growth cycle was measured to prove whether the existence of SRB was the cause of increasing sulfur content in the oil pipeline. Corrosion coupon test and electrochemical experiment were used to research the corrosion behavior of Q235 steel in SRB and sterile mediums and the corrosion morphology and products of the steel were alalyzed. The results showed that there existed SRB in the oil pipeline and hydrogen sulfide gas was produced in the process of metabolism, which increased the possibility of stress corrosion cracking of pipeline steel. The corrosion mode on the surface of the steel was changed from the slight non-uniform corrosion to serious localized corrosion due to SRB. The metabolites of SRB were mainly sulfur compounds, and might be responsible for the increase of localized corrosion of the steel.
中图分类号 TG172 DOI 10.11973/fsyfh-201801002
所属栏目 试验研究
基金项目 国家重大专项课题（2016 ZX 05024-004）
收稿日期 2015/12/3
修改稿日期
网络出版日期
作者单位点击查看
联系人作者敬加强(jjq@swpu.edu.cn)
引用该论文: JING Jiaqiang,LIU Li,XIE Junfeng,WANG Peng. Effect of Sulfate Reducing Bacteria from Corrosion Scale of Oil Pipeline on Corrosion Behavior of Q235 Steel[J]. Corrosion & Protection, 2018, 39(1): 6
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参考文献
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【3】BORENSTEIN S W. Microbiologically influenced corrosion of austenitic stainless steel weldments[J]. Mater Perform,1991,30(1):52-54.
【4】JAVAHERDASHTI R. A review of some characteristics of MIC caused by sulphate-reducing bacteria:past,present and future[J]. Anti-Corros Method M,1999,46(3):173-180.
【5】FRIESEN W,PETROVIC S,DONINI J C,et al. Relative corrosivities of crude oils from oil transmission pipelines[C]//NACE Northern Area Eastern Conference,[S.l.]:[s.n.],2012.
【6】BEEN J,HOLM M. Evaluating corrosion and inhibition under sludge deposits in large diameter crude oil pipelines[J]. Journal of the Electrochemical Society,2010,162(10):D491-D496.
【7】BRENDAN C. Long term evaluation of microbial induced corrosion contribution to underdeposit sludge corrosivity in a heavy crude oil pipeline[C]//Corrosion,[S.l.]:[s.n.],2013.
【8】曹然伟. 管线钢腐蚀的材料因素与环境因素关联性研究[D]. 成都:西南石油大学,2011.
【9】SUICKLAND L N. A case history of microbiologically influenced corrosion in the lost hills oilfield[J]. Corrosion,1996(12):297.
【10】邱学青,肖锦. 硫酸盐还原菌的腐蚀性与杀菌处理的缓蚀效果研究[J]. 油田化学,1991,2(8):149-152.
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【12】LIU F L,ZHANG J,SUN C X,et al. The corrosion of two aluminium sacrificial anode alloys in SRB containing sea mud[J]. Corrosion Science,2014,83:375-381.
【13】MA H Y,CHENG X L,LI G Q,et al. The influence of hydrogensulfide on corrosion of iron under different conditions[J]. Corrosion Science,2000(10):1669-1683.
【14】曹楚南. 腐蚀电化学原理[M]. 第3版. 北京:化学工业出版社,2008.
【15】YU L,DUANG J Z,DU X Q,et al. Accelerated anaerobic corrosion of electroactive sulfate-reducing bacteria by electrochemical impedance spectroscopy and chronoamperometry[J]. Electrochemistry Communications,2013,26:101-104.
【16】COTE C,ROSAS O,SZTYER M,et al. Corrosion of low carbon steel by microorganisms from the ‘pigging’ operation debris in water injection pipelines[J]. Bioelectrochemistry,2014,97:97-109.
【17】AlABBAS F M,WILLIAMSON C,BHOLA S M,et al. Influence of sulfate reducing bacterial biofilm on corrosion behavior of low-alloy,high-strength steel (API-5L X80)[J]. Int Biodeterior Biodegrad,2013,78:34-42.
【18】刘宏芳,徐立铭. 硫酸盐还原菌生物膜下钢铁腐蚀研究概况[J]. 油田化学,2000,17(1):94-96.
【19】CHEN S Q,WANG P,ZHANG D. Corrosion behavior of copper under biofilm of sulfate-reducing bacteria[J]. Corrosion Science,2014,87:407-415.
【20】SUL B G H,TILLER A K. Cathodic characteristics of mild steel in suspensions of phate-recteria bacteria[J]. Corrosion Science,1968(8):583-585.
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