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| HIGH TEMPERATURE NAPHTHENIC ACID CORROSION OF STEEL IN HIGH TAN REFINING MEDIA |
| YU Jianfei1;2; GAN Fuxing2;3; HAO Long3; CHEN Zhiliang2 |
1. Hubei Electric Power Testing & Research Institute; Wuhan 430077
2. School of Resource and Environmental Science; Wuhan University; Wuhan 430079
3. State Key Laboratory for Corrosion and Protection; Institute of Metal Research; Chinese Academy of Sciences; Shenyang 110016 |
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Abstract Corrosion behavior of carbon steel and stainless steel in white oil withm naphthenic acid were studied under high temperature by mass loss method and surface analysis. Naphthenic acid corrosion (NAC) rates were directly related to experimental temperature and total acid number (TAN). The activation energy was calculated and the process kinetics could be represented by Arrhenius-type equation. The relationship between the isothermal line in liquid phase and that in vapor phase at different TAN values had a significant distinction with the change of temperature. The relationship between corrosion rate and square root of TAN is linear. The corrosion rate decreased sharply with the increase of exposure time from 1.5 h to 12 h, and then remained comparative steady state after 12 h. The findings have important implications for assessing the corrosivity of crude oils with high TAN value from various resources.
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Received: 23 July 2008
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Corresponding Authors:
GAN Fuxing
E-mail: fxgan@163.com
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| [1] Zhou S, Stack M M, Newman R C.Characterization of synergistic effects between erosion and corrosion in an aqueous environments using electrochemical techniques [J]. Corrosion, 1996, 52(12): 934-942
[2] Gutzeit J. Naphthenic acid corrosion in oil refineries [J]. Mater. Perform,1977, 16(10): 24-35
[3] Slavcheva E, Shone B, Turnbull A. Review of naphthenic acid corrosion in oil refining [J]. Br. Corros. J.,1999, 34(2): 125-131
[4] Piehl R L. Naphthenic acid corrosion in crude distillation units [J]. Mater. Perform., 1988, 27(1): 37-43
[5] Turnbull A, Slavcheva E, Shone B. Factors controlling naphthenic acid corrosion [J]. Corrosion, 1998, 54: 922-930
[6] Wu X Q, Jina H M, Zheng Z M, et al. The testing equipment simulating high-temperature and high-velocity situations in oil refinery industry and the selection of its experimental prameters [J]. J. Chin. Soc. Corros.Prot., 2002, 22(1): 1-7
(吴欣强, 敬和民, 郑玉贵等. 模拟工业炼油环境高温高流速状态的循环测试装置及其实验参数选择 [J]. 中国腐蚀与防护学报, 2002, 22(5): 257-263)
[7] Wu X Q, Jina H M, Zheng Y G, et al. Study on corrosion and erosion-corrosion behaviors of carbon steel in naphthenic acid mediums at high temperature [J]. J. Chin. Soc.Corros. Prot., 2002, 22(5): 257-263
(吴欣强, 敬和民, 郑玉贵等. 碳钢在高温环烷酸介质中冲刷腐蚀行为[J]. 中国腐蚀与防护学报,2002, 22(5): 257-263)
[8] Wu X R, Jing H M, Zheng Y G, et al. Study on high-temperature naphthenic acid corrosion and erosion-corrosion of aluminized carbon steel [J]. J. Mater. Sci., 2004, 39(11): 975-985
[9] Qu D R, Zheng Y G, Ke W. Correlation between the corrosivity of naphthenic acids and their chemical structures [J]. Anti-Corros.Methods Mater., 2007, 54(2): 211-218
[10] Qu D R, Zheng Y G, Yao H M, et al. High temperature naphthenic acid corrosion and sulphidic corrosion of Q235 and 5Cr1/2Mo in synthetic refining media [J].Corros. Sci., 2006, 48: 1960-1985
[11] Jayaraman A, Saxena R C.Corrosion and its control in petroleum refineries-a review [J].Corros. Prev. Control, 1995, 14 (12): 123-131
[12] Gao Y M,Cheng J J, Yu G. Corrosion mechanism of A3 steel in naphthenic acid [J]. Corros. Sci. Prot. Technol, 2000, 12(1): 27-29
(高延敏, 陈家坚, 余刚. 环烷酸对A3钢腐蚀机理的研究 [J]. 腐蚀科学与防护技术, 2000, 12(1): 27-29) |
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