转炉煤气柜柜内钢结构的腐蚀原因
Corrosion Reason of Steel Structure inside a Converter Gas Holder
摘 要
对转炉煤气柜内腐蚀介质与腐蚀产物进行分析，探讨了柜内钢结构腐蚀的原因与机理。结果表明：柜内碳钢表面腐蚀产物主要由FeCO3及少量铁氧化物和CaCO3组成，煤气冷凝水中含有大量的HCO3-及Cl-等腐蚀性离子，因此气柜内钢结构腐蚀主要是由CO2引起的，CO2溶于冷凝水后，在碳钢表面形成一层弱酸性腐蚀液膜，使得钢结构表面发生了CO2均匀腐蚀。由于柜内煤气温度较低，形成的腐蚀产物疏松，使得氧气、Cl-等能渗透到碳钢表面，加速局部腐蚀，使得气柜侧壁及底板表面出现许多腐蚀孔洞。
CO2腐蚀
腐蚀介质
温度
converter gas holder
CO2 corrosion
corrosive medium
temperature
Abstract
The corrosion reason and mechanism of a steel strusture inside a converter gas lolder were discussed through the analysis of corrosive medium and corrosion products. The results show that the corrosion products were mainly composed of FeCO3, CaCO3 and a little of iron oxides. In addition, the gas condensate in the gas holder contained a lot of corrosive ions, such as HCO3-, Cl-. When the gas condensate had formed a layer of liquid film on the carbon steel surface, homogeneous corrosion of CO2 on the carbon steel surface in the gas holder occurred. The corrosive irons, such as Cl- and O2, could penetrate through the corrosion product films and the corrosion of carbon steel was accelerated, which could cause lots of corrosive pits on the surface of carbon steel in the gas holder.
中图分类号 TG172 DOI 10.11973/fsyfh-201707019
所属栏目 失效分析
基金项目
收稿日期 2015/12/13
修改稿日期
网络出版日期
作者单位点击查看
引用该论文: LI Min,HUANG Yonghong. Corrosion Reason of Steel Structure inside a Converter Gas Holder[J]. Corrosion & Protection, 2017, 38(7): 568
共有人对该论文发表了看法，其中：
人认为该论文很差
人认为该论文较差
人认为该论文一般
人认为该论文较好
人认为该论文很好
参考文献
【1】LIU Q Y,MAO L J,ZHOU S W. Effects of chloride content on CO2 corrosion of carbon steel in simulated oil and gas well environments[J]. Corrosion Science,2014(84):165-171.
【2】赵景茂, 顾明广, 左禹. 碳钢在二氧化碳溶液中腐蚀影响因素的研究[J]. 北京化工大学学报,2005,32(5):71-74.
【3】冯蓓,杨敏,李秉风,等. 二氧化碳腐蚀机理及影响因素[J]. 辽宁化工,2010,39(9):976-979.
【4】YOON S,SRDJAN N,DAVID Y. Effect of impurities on the corrosion behavior of CO2 transmission pipeline steel in supercritical CO2-water environments[J]. Environ Sci Technol,2010,44:9233-9238.
【5】汪文强. 原油储罐内底板腐蚀机理分析与涂层防腐蚀技术研究[D]. 上海:华东理工大学,2014.
【6】ZHANG G A,CHENG Y F. Localized corrosion of carbon steel in a CO2-saturated oilfield formation water[J]. Electrochimica Acta,2011(56):1676-1685.
【7】宋玲,李慧珍. 转炉煤气回收系统的腐蚀与防腐问题探讨[J]. 武钢技术,2013,51(3):4-8.
【8】林冠发,白真权,赵新伟,等. 温度对二氧化碳腐蚀产物膜形貌特征的影响[J]. 石油学报,2004,25(3).
【9】SEHMITT G,ROTHMAN B. Corrosion of unalloyed and low alloyed steels in carbonic acid solutions[C]//CO2 Corrosion Oil and Gas Production Selected Papers,Abstracts and References.[S.l.]:[s.n.],NACE,1984.
【10】万里平,孟英峰,梁发书. 油气田开发中的二氧化碳腐蚀及影响因素[J]. 全面腐蚀控制,2003,17(2):14-17.
【11】张学元,邸超,雷良才. 二氧化碳腐蚀与控制[M]. 北京:化学工业出版社,2000.
【12】DE WARRD C,MILLIAMS D E. Predictive model for CO2 corrosion engineering in natural gas pipeline[J]. Corrosion,1991,47(12):976-985.
【13】李春福,王斌,张颖. 油气田开发中CO2腐蚀研究进展[J]. 西南石油学院学报,2004,26(2):42-46.
【14】艾俊哲,贾红霞,舒福昌,等. 油气田二氧化碳腐蚀及防护技术[J]. 湖北化工,2002(3):3-5.
【2】赵景茂, 顾明广, 左禹. 碳钢在二氧化碳溶液中腐蚀影响因素的研究[J]. 北京化工大学学报,2005,32(5):71-74.
【3】冯蓓,杨敏,李秉风,等. 二氧化碳腐蚀机理及影响因素[J]. 辽宁化工,2010,39(9):976-979.
【4】YOON S,SRDJAN N,DAVID Y. Effect of impurities on the corrosion behavior of CO2 transmission pipeline steel in supercritical CO2-water environments[J]. Environ Sci Technol,2010,44:9233-9238.
【5】汪文强. 原油储罐内底板腐蚀机理分析与涂层防腐蚀技术研究[D]. 上海:华东理工大学,2014.
【6】ZHANG G A,CHENG Y F. Localized corrosion of carbon steel in a CO2-saturated oilfield formation water[J]. Electrochimica Acta,2011(56):1676-1685.
【7】宋玲,李慧珍. 转炉煤气回收系统的腐蚀与防腐问题探讨[J]. 武钢技术,2013,51(3):4-8.
【8】林冠发,白真权,赵新伟,等. 温度对二氧化碳腐蚀产物膜形貌特征的影响[J]. 石油学报,2004,25(3).
【9】SEHMITT G,ROTHMAN B. Corrosion of unalloyed and low alloyed steels in carbonic acid solutions[C]//CO2 Corrosion Oil and Gas Production Selected Papers,Abstracts and References.[S.l.]:[s.n.],NACE,1984.
【10】万里平,孟英峰,梁发书. 油气田开发中的二氧化碳腐蚀及影响因素[J]. 全面腐蚀控制,2003,17(2):14-17.
【11】张学元,邸超,雷良才. 二氧化碳腐蚀与控制[M]. 北京:化学工业出版社,2000.
【12】DE WARRD C,MILLIAMS D E. Predictive model for CO2 corrosion engineering in natural gas pipeline[J]. Corrosion,1991,47(12):976-985.
【13】李春福,王斌,张颖. 油气田开发中CO2腐蚀研究进展[J]. 西南石油学院学报,2004,26(2):42-46.
【14】艾俊哲,贾红霞,舒福昌,等. 油气田二氧化碳腐蚀及防护技术[J]. 湖北化工,2002(3):3-5.
相关信息
