煤气与热力2025，Vol.45Issue(8)：37-42,6.
基于内腐蚀泄漏的高压燃气管道建设要点
Key Points for Construction of High-Pressure Gas Pipelines Based on Internal Corrosion and Leakage
石丹阳 1张鸣 1左怀梦 2许克家 3高思静4
作者信息
- 1. 中裕(河南)能源控股有限公司,河南 郑州 450000
- 2. 泗洪中裕燃气有限公司,江苏宿迁 223900
- 3. 温县中裕燃气有限公司,河南焦作 454800
- 4. 北京市煤气热力工程设计院有限公司,北京 100032
- 折叠
摘要
Abstract
Internal corrosion and leakage cases related to construction are summarized.The causes of internal corrosion and leakage before and after the commission-ing of pipelines,as well as the mechanisms of major corrosion types(pitting corrosion and CO2 corrosion)are analyzed,and the key points for construction are proposed.The main reasons for internal corrosion be-fore commissioning include a long time interval be-tween pipeline completion and commissioning,the ab-sence or substandard quality of relevant pigging and drying operations.The corrosion type is primarily pit-ting corrosion perforation.The main cause for internal corrosion after commissioning is the accumulation of liquid water during the construction period,leading to CO2 weak acid corrosion.To prevent internal corrosion of pipelines,it is necessary to carry out pipeline pig-ging,pressure testing,drying,shorten the idle time;implement the operations in accordance with stan-dards;and use dry nitrogen at 0.2 MPa to maintain pipeline pressure after pipeline construction.关键词
内腐蚀/泄漏/燃气管道建设/CO2弱酸腐蚀/点蚀Key words
internal corrosion/leakage/gas pipeline construction/CO2 weak acid corrosion/pitting corrosion分类
建筑与水利引用本文复制引用
石丹阳,张鸣,左怀梦,许克家,高思静..基于内腐蚀泄漏的高压燃气管道建设要点[J].煤气与热力,2025,45(8):37-42,6.
