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腐蚀是影响天然气集输安全工作可靠性和使用寿命的重要因素之一。据资料介绍,集气管线和输气干线的泄漏事故中,有74%是由腐蚀因素造成的。我国天然气管道投产1-2年即发生腐蚀穿孔的情况也屡见不鲜。本文从天然气地下金属管道的腐蚀机理和腐蚀类型着手,然后介绍了一些防腐措施。
Corrosion is one of the important factors affecting the reliability and service life of natural gas gathering and transportation safety work. According to the information, 74% of the leakage accidents of gas gathering lines and gas transmission lines are caused by corrosion factors. It is not uncommon for corrosive perforations to occur in China’s natural gas pipelines 1-2 years ago. This paper starts with the corrosion mechanism and corrosion type of natural gas underground metal pipes, and then introduces some anti-corrosion measures.