成品油携水特性对管道内腐蚀的影响  

Influence of water carrying capacity of oil products on internal corrosion of pipelines

作　　者：宋晓琴[1] 熊柯杰[1] 朱建平 余东亮 

机构地区：[1]西南石油大学石油与天然气工程学院,四川成都610500 [2]中国石油西南管道公司,四川成都610041

出　　处：《油气储运》2015年第8期834-838,共5页Oil & Gas Storage and Transportation

摘　　要：为了研究成品油携水特性的主要影响因素,分析成品油管道内腐蚀原因,以兰成渝管道为例,采用Fluent软件,模拟了流速、油品黏度、上倾角度等因素对油携水能力的影响,分析在地形起伏管段及工况参数改变的情况下油携水时的积水分布形态。重点研究兰成渝管道各年运行工况下的临界倾角,在此基础上判断兰成渝管道运行过程中的积水情况和内腐蚀原因。研究表明:流速和黏度的增加能够有效地提高油携水能力;成品油管道沿线坡度较大的上倾管段处是低洼积水的危险位置,而管道沿线低洼处存在大量积水是导致成品油管道内腐蚀的根本原因。In this paper, The Lanzhou-Chengdu-Chongqing Products Pipeline is taken as an example to study the main factors infl uencing water carrying capacity of oil products and analyze the cause for internal corrosion of products pipelines. Fluent software is adopted to simulate the effect of fl ow rate, viscosity and updip angle of oil product on its water carrying capacity, and to analyze distribution of accumulated water during oil carrying water at sections with topographic relief or changed working condition parameters. Research is focused on the critical dip angles under different working conditions when Lanzhou-Chengdu-Chongqing Products Pipeline is in operation, so as to analyze its water accumulation situations and internal corrosion causes. It is indicated that water carrying capacity of oil products can be improved effectively by increasing fl ow rate and viscosity. Water tends to accumulate at the updip section with higher slope along products pipelines. A large amount of water accumulation at the low sections is the fundamental cause of internal corrosion of products pipelines.

关 键 词：成品油管道 内腐蚀 油携水 数值模拟 

分 类 号：TE832[石油与天然气工程—油气储运工程]