| 乙烯EA1123稀释蒸汽发生器腐蚀原因分析 |
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| 引用本文： | 章炳华.乙烯EA1123稀释蒸汽发生器腐蚀原因分析[J].腐蚀与防护,2007,28(9):479-481. |
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| 作者姓名： | 章炳华 |
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| 作者单位： | 扬子石油化工股份有限公司,南京,210048 |
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| 摘 要： | 某乙烯装置EA1123稀释蒸汽发生器在最近运行17个月中发生腐蚀泄漏13次。本文从设备、工艺上分析了腐蚀原因,认为工艺水中含有大量硫化物,碱,形成NaOH-H2O和H2S-H2O腐蚀体系。在稀释蒸汽发生器中,腐蚀性介质由于蒸发浓缩产生强酸或强碱性腐蚀而引起换热管外壁局部腐蚀穿孔;提出了工艺防腐蚀措施。
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| 关 键 词： | 乙烯 稀释蒸汽发生器 腐蚀 分析 |
CORROSION ANALYSES OF DILUTED STEAM GENERATING SYSTEM OF EA1123 ETHYLENE PLANT |
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| ZHANG Bing-hua.CORROSION ANALYSES OF DILUTED STEAM GENERATING SYSTEM OF EA1123 ETHYLENE PLANT[J].Corrosion & Protection,2007,28(9):479-481. |
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| Authors: | ZHANG Bing-hua |
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| Abstract: | The leakage due to corrosion of the dilution steam generator of ethylene plant EA1123 occurred 13 times in recent 17 months.According to a detailed analysis of the corrosion reasons in the equipment and technology,main reason was regarded as that there was a mass of sulfide and alkali in water and subseguently NaOH-H2S-H2O corrosion system was formed.The localized corrosion perforation of the outer heat-exchange tube was caused by the strong acid and alkaline corrosion system produced by evaporating concentration of the corrosive medium in the dilution steam generator.Some protection measures are proposed. |
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| Keywords: | Ethylene Dilution steam generator Corrosion Analysis |
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