Research on Corrosion Control Measures for Natural Gas Pipelines
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.
natural gas long-distance pipelineanti-corrosion coatingcathodic protectionsacrificial anode
NETL
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