天然气输气管线钢的CO2腐蚀行为
CO2 Corrosion of Natural Gas Pipe Steels
摘 要
在模拟含二氧化碳气体的天然气气氛中,对X60管线钢、16MnR钢和20#钢静态挂片腐蚀试验,得出三种材料腐蚀速率从小到大的顺序为X60＜16MnR＜20#.随着温度升高挂片腐蚀速率加快且以点蚀为主,在 60 ℃附近时腐蚀速率最大.当温度升至90 ℃时,均匀腐蚀开始产生,腐蚀产物膜形成.腐蚀产物主要由铁的氧化物(Fe2O3、FeO)、碳酸亚铁(FeCO3)及氢氧化铁(Fe(OH)2)等组成,对钢片起到一定的保护作用.
点蚀
影响因素
carbon dioxide corrosion
pitting
influencing factor
Abstract
The static corrosion of steels X60,16MnR and 20# was tested in the simulated atmosphere of natural gas containing CO2.The order of corrosion rates was X60＜16MnR＜20#.The corrosion rate and pitting became serious with the increase of temperature.The maximum corrosion rate appeared at 60 ℃.It was uniform corrosion when the temperature got to 90 ℃.The corrosion product films consisting of ferric oxide(Fe2O3,FeO),ferrous carbonate(FeCO3)and ferrous hydroxide(Fe(OH)2) had definite corrosion protection.
中图分类号 TG174.4
所属栏目 试验研究
基金项目
收稿日期 2007/9/26
修改稿日期 2007/10/31
网络出版日期
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引用该论文: LI Ting-qu,WU Hua,LI Xue-song. CO2 Corrosion of Natural Gas Pipe Steels[J]. Corrosion & Protection, 2008, 29(5): 260～262
被引情况:
【1】李岩,单华,白文龙,张杨,徐海霞, "某采气井支线进集气干线三通处的爆管原因",腐蚀与防护 35, 1056-1059(2014)
【2】骆鸿,于成雨,毕研峰,李浩,刘智勇,李晓刚, "酸性环境中CO2对2205不锈钢应力腐蚀的影响",腐蚀与防护 34, 659-662(2013)
【3】张玉成,屈少鹏,庞晓露,高克玮, "超临界CO2条件下钢的腐蚀行为研究进展",腐蚀与防护 32, 854-858(2011)
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参考文献
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【2】刘绘新,苏永平.川东气田油管腐蚀现状的基本特征[J].天然气工业,2000,20(5):77-79.
【3】Burke P A.Synopsis:recent progress in the understanding of CO2 corrosion[C]//In:Hausler R H,Giddard H P.(Eds),Advances in CO2 corrosion Vol.1.Corrosion’84,Houston,TX:NACE International,1993:1-18.
【4】Waard C,Lozt U.Prediction of CO2 corrosion of carbon steel[C]//A working party report on prediction CO2 corrosion in oil and gas corrosion of carbon steel.Corrosion’94,Houston,TX:NACE International,1994:1-21.
【5】Newton L E.CO2 corrosion in oil and gas production[C]//Corrosion/1984,Paper No.7.Houston:National Association of Corrosion Engineers,Texas,1984.
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