| 集输管内腐蚀失效原因分析 |
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| 引用本文： | 田嘉治,吕庆钢,羊东明,田青超. 集输管内腐蚀失效原因分析[J]. 理化检验(物理分册), 2013, 0(12): 843-847 |
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| 作者姓名： | 田嘉治 吕庆钢 羊东明 田青超 |
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| 作者单位： | [1]上海电力学院,上海200082 [2]中石化西北油田分公司,乌鲁木齐830011 [3]宝钢研究院,上海201900 |
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| 摘 要： | 对某站原油外输管线的内腐蚀穿孔管段进行了取样分析，使用光学显微镜、X射线衍射仪、能谱分析仪等设备对管子腐蚀形貌进行观察，发现腐蚀产物中有不同类型的羟基氧化铁以及FeCO3和FeS等，分析了导致管子电化学腐蚀穿孔的主要原因，对杂散电流和氯离子加速腐蚀穿孔的机制进行了深入的探讨，并对该类腐蚀防护提出了建议。
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| 关 键 词： | 外输管线 电化学腐蚀 杂散电流 腐蚀防护 |
Failure Analysis on Internal Corrosion of Crude Oil Pipeline |
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| TIAN Jia-zhi,LU Qing-gang,YANG Dong-ming,TIAN Qing-chao. Failure Analysis on Internal Corrosion of Crude Oil Pipeline[J]. Physical Testing and Chemical Analysis Part A:Physical Testing, 2013, 0(12): 843-847 |
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| Authors: | TIAN Jia-zhi LU Qing-gang YANG Dong-ming TIAN Qing-chao |
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| Affiliation: | 1. Shanghai Electric Power College, Shanghai 200082, China; 2 Sinopec Northwest Oilfield Branch, Urumqi 830011, China; 3. Baosteel Research Institute, Shanghai 201900, China) |
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| Abstract: | The internal corrosion pipe specimens cut from the crude oil pipeline were analyzed by using the optical microscope, X-ray diffraction analyzer and SEM energy spectrum analyzer. It was found that there existed different types of hydroxy iron oxide as well as FeCOa and FeS in the corrosion products. The main causes of the electrochemical corrosion perforation were discussed, and then the accelerated effect of stray electric current and chloride ion on the corrosion perforation mechanism was proposed, and further the protection methods against this kind of corrosion were put forward. |
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| Keywords: | transportation oil pipeline electrochemical corrosiom stray electric current corrosion protection |
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