原油管线腐蚀原因分析

概述了原油长输埋地管线的腐蚀情况,管线腐蚀的主要原因是因玻璃纤维布严重破损而发生的由外及里的微电池腐蚀、由里及外的含硫原油中的二氧化硫腐蚀及H2S-H2O型腐蚀、耗氧腐蚀和二氧化碳腐蚀,分析了管线腐蚀的腐蚀机理,提出了防腐措施及对策。

Analysis on the Corrosion of the Long - range Crude Oil Pipelines

The corrosion of the long - range crude oil pipelines is summarized in this paper, The corrosion of pipelines is resulted mainly from the severe damage of glass fiber sheets, causing the corrosion of micro - cell which extends from the outside to the inside of the pipelines, the corrosion of the carbon dioxide from the sweet crude oil which extends from the inside to the outide of the pipelines, and H2S-H2O corrosion, the oxygen - consumption corrosion and the corrosion of carbon dioxide, etc. The mechanism of corrsion is analyzed, and some measures for corrosion protection are put forward.