在线测厚腐蚀监测技术在石油化工装置的应用

APPLICATION OF ONLINE THICKNESS MEA-SUREMENT AND CORROSION MONITORING TECHNOLOGY IN PETROCHEMICAL PLANTS

为了有效弥补探针监测、挂片监测和离线测厚监测等传统腐蚀监测技术的局限性,某石化公司在腐蚀程度较为严重的装置引入了在线超声测厚腐蚀监测技术,该技术具有适用于高温管道测厚、安装灵活方便、节约成本等优点。现场应用结果表明:在线超声测厚技术运行稳定可靠、数据准确,与离线测厚数据的比对误差不大于6%。该技术能够准确监测管道的剩余壁厚,真实反映其腐蚀变化趋势,并能及时发现腐蚀隐患,预防腐蚀事件的发生,未来将会成为炼化装置腐蚀监测领域广泛应用的一项新技术。

In order to effectively make up for the limitations of traditional corrosion monitoring technology such as probe monitoring,corrosion coupon monitoring and offline thickness monitoring,a petrochemical company introduced online ultrasonic thickness measurement and corrosion monitoring technology in the plant with more serious corrosion.The technology has the advantages of being applicable to high-temperature pipeline thickness measurement,flexible and convenient installation,cost savings and so forth.Application results show that the online thickness measurement and corrosion monitoring technology is stable and reliable with accurate data;the comparison error with offline thickness measurement data is no more than 6%.This technology can monitor the remaining wall thickness of the pipelines accurately,reflect the corrosion change trends truly,detect corrosion hazards timely and prevent corrosion events.Therefore,it will become a new technology widely used in corrosion monitoring in petrochemical plants in the future.