| 柴油加氢精制装置换热器隔板断裂原因分析 |
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| 引用本文： | 黄鑫.柴油加氢精制装置换热器隔板断裂原因分析[J].石油化工腐蚀与防护,2005,22(4):45-47. |
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| 作者姓名： | 黄鑫 |
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| 作者单位： | 中国石油化工股份有限公司金陵分公司,江苏,南京,210033 |
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| 摘 要： | 柴油加氢精制装置的两台高压换热器投用不到4年,发现管箱隔板断裂。通过对隔板的检查和分析,判断隔板断裂属于连多硫酸引起的应力腐蚀开裂。硫和硫化氢与隔板表面反应形成FeS,FeS在氧气和水的作用下形成连多硫酸,导致连多硫酸应力腐蚀开裂。文末提出了相应的防护措施。
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| 关 键 词： | 奥氏体不锈钢 连多硫酸 应力腐蚀开裂 |
| 文章编号： | 1007-015X(2005)04-0045-03 |
| 修稿时间： | 2005年3月28日 |
Analysis of Cracking of Heat Exchanger Partition Plate in Diesel Hydrotreating Unit |
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| Huang Xin.Analysis of Cracking of Heat Exchanger Partition Plate in Diesel Hydrotreating Unit[J].Petrochemical Corrosion and Protection,2005,22(4):45-47. |
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| Authors: | Huang Xin |
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| Abstract: | The partition plates in two high-pressure heat exchangers in diesel hydrotreating unit experienced cracking in less than 4 years after the heat exchangers were commissioned. The examination and analysis reveal that the cracking of the plates is the result of stress corrosion cracking (SCC) caused by polythionic acid. The polythionic acid is formed by the reaction of oxygen and water with FeS on the surface of the plates which is the result of reaction of plate surface with sulfur and hydrogen sulfide. The corresponding measures are suggested. |
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| Keywords: | austenitic stainless steel polythionic acid stress corrosion cracking |
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