基于数值计算的罐底板阴极保护电位分布研究进展与展望

Research Progress of Regional Cathodic Protection Potential Distribution of Tank Floor Based on Numerical Calculation

总结了近几十年的罐底板阴极保护研究,归纳了影响油罐外底板腐蚀的直接和间接因素,介绍了储罐底板阴极保护的机理、方法及所用阳极地床形式,分析了目前数值模拟计算方法在罐底板阴极保护中的应用并讨论了阴极保护数值模拟技术的最新进展,以及阴极保护数值模拟技术现有的缺点,并对其未来的发展趋势进行了预测,可以为阴极保护系统的建设提供参考。

At present,cathodic protection technology is the most effective and economical method for preventing oil and gas storage tank from corrosion,while regional cathodic protection technology,especially the regional cathodic protection technology of tank farms,is not mature enough.How to determine whether the cathodic protection applied to the protected facility is achieved the desire effect is still the bottleneck of the current technological development.This paper primarily summarizes the research on cathodic protection of tank floors from the previous decades and the direct and indirect factors impacting the tank outer floor corrosion,introduces the mechanisms,methods and forms of anode bed used for cathodic protection of tank floors,describes the application of the current numerical simulation calculation methods in cathodic protection of tank floors and the latest advancements.Finally,we summarize the existing drawbacks of numerical simulation techniques for cathodic protection and forecast their future development trends,with the goal of providing a helpful reference for construction of cathodic protection systems.