| 轻柴油换热器腐蚀原因分析及防范措施 |
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| 引用本文： | 郑新兵.轻柴油换热器腐蚀原因分析及防范措施[J].管道技术与设备,2010(4):47-48. |
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| 作者姓名： | 郑新兵 |
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| 作者单位： | 中国石油大庆石化分公司炼油厂,黑龙江大庆,163711 |
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| 摘 要： | 某厂重油催化裂化装置轻柴油换热器管束使用5年后发生严重腐蚀,管束外壁腐蚀严重,多处腐蚀穿孔。通过调查分析,原因是轻柴油中含有少量H2S、HCl和H2O,形成了HCl-H2S-H2O腐蚀环境,特别是低温部由于有液态水存在,腐蚀严重。通过多个方案对比,提出了采用碳钢管束渗铝技术,即节约制造费用,又提高了管束抗腐蚀性能,延长了设备运行周期。
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| 关 键 词： | 换热器 轻柴油 渗铝 腐蚀 |
Corrosion of the Light Diesel Heat Exchanger and Protective Measure |
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| ZHENG Xin-bing.Corrosion of the Light Diesel Heat Exchanger and Protective Measure[J].Pipeline Technique and Equipment,2010(4):47-48. |
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| Authors: | ZHENG Xin-bing |
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| Institution: | ZHENG Xin-bing(Refinery of Daqing Petrochemical Branch,CNPC,Daqing 163711,China) |
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| Abstract: | The light diesel heat exchanger of FCC unit in the company has experienced corrosion leakages only 5 years.The external wall of heat exchanger tubes is worst.The investigation and analysis of it leads to a conclusion that the leakages were caused by the comprehensive corrosion of H2S-HCl-H2O.Through contrasts,between many plans,an aluminized heat-exchanger is much more superior in resisting corrosion to carbon steel.The application of the aluminized heat-exchanger can effectively prevent the corrosion and extension equipment renewal cycle. |
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| Keywords: | heat exchanger light diesel aluminized corrosion |
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