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在天然气长输管道工程竣工的运营过程中,为了防止空气和天然气在管道内的混合,以确保管道内的混合气体不会发生爆炸,空气置换此时就显得非常需要。置换是在管道的运行过程中一个非常重要的环节,本文比较了常用的几种管干燥技术,对注氮技术方案和氮气置换技术进行了分析,取得了良好的可用于工程实际的结论。
In the process of completing the long-distance natural gas pipeline project, air replacement is needed at this time in order to prevent the mixing of air and natural gas in the pipeline to ensure that the mixed gas in the pipeline will not explode. Replacement is a very important link in the operation of the pipeline. In this paper, several commonly used tube drying techniques are compared. Nitrogen injection technology and nitrogen replacement technology are analyzed. Good results can be obtained for engineering practice.