天然气管道腐蚀控制措施研究  

Research on Corrosion Control Measures for Natural Gas Pipelines

作　　者：贾正东 Jia Zhengdong(Pipeline Branch of Shanxi Gas Industry Group Co.,Ltd.,Taiyuan Shanxi 030000,China)

机构地区：[1]山西燃气产业集团有限公司管道分公司,山西太原030000

出　　处：《山西化工》2024年第11期191-192,199,共3页Shanxi Chemical Industry

摘　　要：为保证天然气长输管道的正常运行,降低管道腐蚀风险,提出采用防腐涂层和阴极保护相结合的管道腐蚀控制措施。当采取镁合金牺牲阳极保护后,对管道的有效保护距离约为3 km,极化效果好;当对管道采取外加电流和牺牲阳极联合保护,同时将两端防腐站的电流降低,电位分布更均匀,且阴极保护效率由42%提高到100%。经应用表明该联合控制措施的管道阴极保护效果好。In order to ensure the normal operation of natural gas long-distance pipelines and reduce the risk of pipeline corrosion,a pipeline corrosion control measure combining anti-corrosion coatings and cathodic protection is proposed.When magnesium alloy sacrificial anode protection is adopted,the effective protection distance of the pipeline is about 3 km,and the polarization effect is good.When external current and sacrificial anode are combined to protect the pipeline,and the current at both ends of the anti-corrosion station is reduced,the potential distribution is more uniform,and the cathodic protection efficiency is increased from 42% to 100%.The application shows that the joint control measure has a good cathodic protection effect on pipelines.

关 键 词：天然气长输管道 防腐涂层 阴极保护 牺牲阳极 

分 类 号：TE988.2[石油与天然气工程—石油机械设备]