干空气吹扫干燥法在输气管道中的应用  

The Application of Dry Air Pigging/Drying Method in Gas Transmission Pipeline

作　　者：郝建斌[1] 王宜建[2] 孙盛[1] 常景龙[1] 廖强[3] 

机构地区：[1]中国石油管道公司管道科技中心 [2]中国石油管道公司涩宁兰项目部 [3]中国石油管道公司工程处

出　　处：《油气储运》2002年第2期51-54,共4页Oil & Gas Storage and Transportation

摘　　要：除水干燥是提高输气质量、预防水合物形成的重要环节,也是输气管道水试压后应进行的重要工序。以涩宁兰输气管道9.5km水试压段采用干空气吹扫法进行的除水干燥试验为例,介绍了干空气吹扫干燥的过程。对管道除水效果及除水干燥中露点的变化进行了分析,结果表明,天然气管道应用干空气吹扫干燥法具有经济、工艺过程易控制等优点,适合在输气管道中推广应用。Dewatering/drying technology, which can provide a quality gas transported and prevent hydrate from forming,is a key procedure that conducts after water pressure testing. Take the dewatering/drying test as an example, which has been carried out with the dry air pigging/drying method in Sebei-Ningxia-Lanzhou Gas Transmission Pipeline,the paper introduces the process of dry air pigging/drying in a 9. 5 km water pressure testing pipe section of the line. The analysis on dewatering result and the variation of water dew point during dewatering/drying is made. The results indicate that the dry air pigging/drying method is cost-effective and the process is easy to control,suitable to apply in gas transmission pipeline.

关 键 词：输气管道 干气 干空气吹扫干燥法 除水干燥 应用 

分 类 号：TE832.3[石油与天然气工程—油气储运工程]