| 常减压蒸馏装置常顶空冷器腐蚀分析及防护 |
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| 引用本文： | 雷刚,张海波.常减压蒸馏装置常顶空冷器腐蚀分析及防护[J].石油化工腐蚀与防护,2012,29(4):37-40. |
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| 作者姓名： | 雷刚 张海波 |
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| 作者单位： | 1. 中国石油渤海装备公司,甘肃兰州,730060
2. 中国石油天然气股份有限公司兰州石化分公司,甘肃兰州,730060 |
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| 摘 要： | 通过对某常减压蒸馏装置常顶空冷器腐蚀现场进行肉眼观察、查看堵漏和定点测厚情况,掌握了常顶空冷器的腐蚀现状。结合装置运行工况,对常顶空冷器腐蚀的原因进行了分析。最后提出防腐建议：降低热媒水进装置温度;改变空冷的进料形式,变一侧进料为对称的形式进料;加长空冷管束内插入钛管长度;加强工艺防腐措施的管理,更换常顶注缓蚀剂泵,改善注水水质,控制pH值稳定合格,减少pH值的大幅度波动;加强腐蚀监检测与检查考核。
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| 关 键 词： | 常减压蒸馏装置 常顶 腐蚀 |
Study on Corrosion in Atmospheric Tower Overhead Air Coolers in Atmospheric -vacuum Distillation Unit and Protection |
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| Lei Gang,Zhang Haibo.Study on Corrosion in Atmospheric Tower Overhead Air Coolers in Atmospheric -vacuum Distillation Unit and Protection[J].Petrochemical Corrosion and Protection,2012,29(4):37-40. |
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| Authors: | Lei Gang Zhang Haibo |
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| Affiliation: | 1.PetroChina Bohai Equipment Company,Lanzhou,Gansu 730060; 2.PetroChina Lanzhou Petrochemical Company,Lanzhou,Gansu 730060) |
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| Abstract: | The corrosion conditions of atmospheric tower overhead air coolers were known by field visual observation and positioning thickness measurement.The corrosion causes of the air coolers were analyzed in consideration of unit operation conditions.The effective corrosion protection measures were recommended such as: lowering inlet temperature of hot medium water,changing the way of feed inlet of air coolers,changing one-side feeding into symmetrical two-side feeding,extending the length of Ti tubes in cooler tubes,strengthening process corrosion prevention management,replacing corrosion inhibitor injection pump in atmospheric tower overhead,improving injection water quality,controlling pH value at specifications,reducing large fluctuation in pH value and reinforcing corrosion detection and investigation. |
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| Keywords: | atmospheric - vacuum distillation unit atmospheric tower overhead corrosion |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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