摘要
长距离油气输运管道运行工况复杂,事故频发,冲蚀腐蚀是导致管道局部失效的典型问题之一,受多因素作用影响。为探究管道钢冲蚀腐蚀多因素影响机制,通过全因子实验设计方法,量化比较了包含不同颗粒浓度、冲击角度、氯离子浓度和pH的多变量系统中单一因素和因素间相互作用对X80管道钢冲蚀腐蚀损失的影响效应,并分析了它们的显著性与方向性。统计学分析结果表明,4个单一因素对冲蚀腐蚀损失均有显著影响,其中颗粒浓度和氯离子浓度与冲蚀腐蚀损失正相关,pH和冲击角度与冲蚀腐蚀损失负相关;因素间协同作用中只有颗粒浓度与氯离子浓度之间的协同作用以及颗粒浓度与冲击角度之间的协同作用效应显著,其余交叉因素效应不显著。此外,根据这些因子对X80管道钢冲蚀腐蚀质量损失速率影响的显著性,给出了作用大小排序,并通过显微照片分析了不同条件下材料损失模式,讨论了因素间协同作用机制,用示意图对因素作用效果和作用机理进行了解释。
Erosion corrosion,which is affected by many factors,is one of the typical problems leading to local failures of long-distance crude oil pipelines.In order to study the influence of multi factors on erosion corrosion of pipeline steel,erosion corrosion loss of X80 Pipeline Steel with different particle concentration,impact angle,chloride ion concentration and pH were quantitatively compared by full factor experimental design method.The significance of single factor and interaction between factors were analyzed.The results showed that factors named above had significant effects on erosion corrosion loss,in which particle concentration and chloride ion concentration were positive effects,while pH and impact angle were negative effects.For cross effects among those four factors,only the interaction between particle concentration and chloride ion concentration and the interaction between particle concentration and impact angle were significant.In addition,the factors were arranged in order according to the significance of their effects on erosion corrosion weight loss of X80 pipeline steel.The material loss modes under different condition were analyzed through micrograph and interaction mechanism between factors was discussed and explained by schematic diagrams.
作者
叶福相
姚军
刘玉发
赵彦琳
董士刚
YE Fuxiang;YAO Jun;LIU Yufa;ZHAO Yanlin;DONG Shigang(International Joint Laboratory on Clean Energy Science and Technology,Beijing Key Laboratory of Process Fluid Filtration and Separation,College of Mechanical and Transportation Engineering,China University of Petroleum-Beijing,Beijing 102249,China;School of Energy,Xiamen University,Xiamen 361005,Fujian,China)
出处
《化工进展》
EI
CAS
CSCD
北大核心
2021年第12期6450-6459,共10页
Chemical Industry and Engineering Progress
基金
国家自然科学基金(51876221,51776225)。
关键词
冲蚀腐蚀
管道钢
两相流
多因素影响
电化学
erosion corrosion
pipeline steel
two-phase flow
multiple factors
electrochemistry
