| 常减压换热器壳体腐蚀开裂原因分析 |
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| 引用本文： | 勾晓弘,宋笑群,朱宏顺.常减压换热器壳体腐蚀开裂原因分析[J].石油化工腐蚀与防护,2004,21(4):30-33. |
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| 作者姓名： | 勾晓弘 宋笑群 朱宏顺 |
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| 作者单位： | 中国石油股份有限公司锦州石化公司,辽宁,锦州,121001 |
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| 摘 要： | 对H - 10 6 ,H - 116换热器开裂的壳体材质、力学性能、断裂韧性、硬度、裂纹剖面金相组织以及壳体介质有害成分进行分析 ,指出换热器壳体开裂主要是硫化氢引起的应力腐蚀开裂。提出了采用涂层和阴极保护 ,选用强度较低的碳钢代替 16MnR ,以及焊后进行热处理等防护措施。
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| 关 键 词： | 换热器 开裂 硫化氢 应力腐蚀 涂层 阴极保护 焊后处理 |
| 文章编号： | 1007-015X(2004)04-0030-04 |
| 修稿时间： | 2003年9月12日 |
Analysis of Corrosion Cracking of Heat Exchangers Shells in Atmospheric-vacuum Distillation Units |
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| Gou Xiaohong,Song Xiaoqun,Zhu Hongshun.Analysis of Corrosion Cracking of Heat Exchangers Shells in Atmospheric-vacuum Distillation Units[J].Petrochemical Corrosion and Protection,2004,21(4):30-33. |
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| Authors: | Gou Xiaohong Song Xiaoqun Zhu Hongshun |
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| Abstract: | The analysis of the metallurgy, mechanism performance, crack rigidity, hardness and metallograhic structure and detrimental substance in the medial of the shell of the heat exchangers H-106 and H-116 finds out that the cracking of the shell is mainly the stress corrosion cracking caused by hydrogen sulfide. Application of coatings and cathode protection, selection of lower-strength carbon steel instead of 16MnR and application of post weld heat treatment are suggested to prevent the cracking. |
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| Keywords: | heat exchanger hydrogen sulfide stress corrosion coating cathode protection post weld heat treatment |
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