Corrosion failure analysis of 20# steel in the process of natural gas purification

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• 作者：Lin Zhu ; Chaoyue Yang ; Decai Long ; Zhuo Chen
• 刊名：Russian Journal of Applied Chemistry
• 出版年：2015
• 出版时间：September 2015
• 年：2015
• 卷：88
• 期：9
• 页码：1510-1516
• 全文大小：1,169 KB
• 参考文献：1.Li, W.F. and Zhou, Y.J., Yan, X., J. Iron & Steel Research Int., 2012, vol. 19, pp. 59–65.CrossRef
  2.Sun, W., Nesic, S., and Papavinasam, S., Corrosion, 2006.
  3.Wang, Z., Yang, C., and Zhu, L., Eng. Failure Analysis, 2014, vol. 44, pp. 66–73.CrossRef
  4.Garcia-Arriaga, V., Alvarez-Ramirez, J., Amaya, M., and Sosa, E., Corrosion Sci., 2010, vol. 52, pp. 2268–2279.CrossRef
  5.Hara, T. and Asahi, H., Corrosion, 2000, vol. 56, pp. 533–542.CrossRef
  6.Ogundele, G.I. and White, W.E., Corrosion, 1986, vol. 42, pp. 71–78.CrossRef
  7.Veawab, A. and Tontiwachwuthikul, P., and Chakma, A., Ind & Eng. Chem. Res., 1999, vol. 38, pp. 3917–3924.CrossRef
  8.Shi, L., Wang, C., and Zou, C., Eng. Failure Analysis, 2014, vol. 36, pp. 372–378.CrossRef
  9.Cheng, X., Ma, H., Chen, S., Niu, L., Lei, S., Yu, R., and Yao, Z., Corrosion Sci., 1999, vol. 41, pp. 773–788.CrossRef
  10.Le, D.P., Ji, W.S., Kim, J.G., Jeong, K.J., and Lee, S.H., Corrosion Sci., 2008, vol. 50, pp. 1195–1204.CrossRef
  
• 作者单位：Lin Zhu (1)
  Chaoyue Yang (1)
  Decai Long (2)
  Zhuo Chen (1)
  
  1. School of Chemistry and Chemical Engineering, Southwest Petroleum University, Rd. 8, Xindu District, Chengdu City, Sichuan Province, P. R. China
  2. CNOOC-Fujian LNG Co., Ltd., Fuzhou City, Fujian Province, P. R. China
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Chemistry
  Industrial Chemistry and Chemical Engineering
  Russian Library of Science
  
• 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
• ISSN：1608-3296

文摘

The present work investigated the corrosion on 20# steel in the process of natural gas purification of PG gas field. According to the analyzing the corrosion condition of the desulfurization device, the research found that the main corrosion was caused by H₂S/CO₂ and there was also the obvious corrosive pitting caused by chloride ion. The morphology and composition of the corrosion scale were characterized by scanning electron microscopy, X-ray power diffraction, and energy-dispersive spectroscopy. Results showed that corrosion scale consists of FeS, Fe₂S, and FeCO₃. The weight loss experiment was conducted to estimate the actual corrosion rate of 20# steel. Electrochemical methods such as polarization curve and electrochemical impedance spectroscopy were used to analyze the effects of chloride ion concentration and temperature on the corrosion. It can be found that the corrosion rate increased with the increasing of chloride ion concentration and temperature.