压力容器2023，Vol.40Issue(10)：75-82,8.DOI:10.3969/j.issn.1001-4837.2023.10.009
蜡油加氢装置主汽提塔腐蚀泄漏原因分析及预防
Analysis and prevention of corrosion and leakage in the main stripper of wax oil hydrogenation unit
刘仁杰 1张盛 1奚力军 1裴克祥1
作者信息
- 1. 中海油 惠州石化有限公司,广东惠州 516086
- 折叠
摘要
Abstract
The main stripper tower of a company's wax oil hydrotreating unit was leaking during corrosion perforation during operation,and the corrosion perforation location was at the lower tower wall of the feed section of the stripper tower.In order to check the corrosion in the tower and study the cause of the corrosion,the unit was shut down for overhauling.After the overhaul of the stripper tower,it was found that the serious corrosion area was distributed in a step-like manner,the feed distribution pipe was perforated due to corrosion,the 9～11th layers of the stripper tower discs and connectors were seriously corroded,and the surface of the tower wall was uneven,with a large area covered by white,green or brown deposits.Crystallographic analysis,phase analysis and other methods were used to analyze the corrosion samples,and determine that the type of corrosion occurring in the tower was the corrosion under the ammonium chloride scale and wet hydrogen sulphide corrosion in combination with the material in the tower,temperature and other parameters.By adopting the methods such as correcting process parameters,repairing corroded areas and upgrading materials of internal parts,the occurrence of corrosion in the tower can be effectively reduced,thus the safe production of the plant was ensured.关键词
蜡油加氢装置/主汽提塔/泄漏/氯化铵垢下腐蚀/腐蚀预防Key words
wax oil hydrogenation unit/main stripper/leakage/corrosion under ammonium chloride scale/corrosion prevention分类
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刘仁杰,张盛,奚力军,裴克祥..蜡油加氢装置主汽提塔腐蚀泄漏原因分析及预防[J].压力容器,2023,40(10):75-82,8.
