摘要
结合济南—齐鲁天然气管道投产要求和实际施工环境 ,对两种天然气管道整体干燥、置换方案进行了比较分析。采用甲醇 +氮气的干燥、置换工艺 ,依靠甲醇干燥管道 ,采用氮气置换空气、天然气置换氮气的方法 ,通过在四个清管器之间分别注入一定量氮气、甲醇、氮气和天然气的方式 ,实现管道一次性干燥与置换。介绍了该工艺在管道干燥与置换过程中的具体实施情况 ,给出了甲醇实际注入量的计算方法 。
This paper presents two design scenarios for overall pigging drying and gas displacement of gas trans-mission pipeline project. This gas pipeline project,Ji'nan to QiLu gas pipeline, 134 km in length and 508×7.9 mm,was put into use in 2002. Before commissioning, whole pipeline pigging drying and gas displacement were made according to the optimal design scenarios. On the basis of analysis results and field feasibility in season,temperature and humidity, the pigging drying and gas displacement scenario, the 2nd scenario (methanol plus nitrogen) was determined. This scenario was successfully carried out in March,2002.
出处
《油气储运》
CAS
北大核心
2003年第10期57-59,共3页
Oil & Gas Storage and Transportation
关键词
天然气管道
干燥
投产分析
氮气置换
natural gas pipeline, commissioning, pigging drying and gas displacement process,project report
