动态模拟FGD环境对玻璃鳞片防腐性能影响的研究  

Anticorrosive performance of glass flake mortar in dynamic simulated FGD environment

作　　者：刘迅 陆小成 冀运东[2] 王森 杨根生 LIU Xun;LU Xiaocheng;JI Yundong;WANG Sen;YANG Gensheng(National Environmental Protection Research Institute for Electric Power,Nanjing 210031;Wuhan University of Technology,School of Materials Science and Engineering,Wuhan 430070)

机构地区：[1]国电环境保护研究院有限公司,江苏南京210031 [2]武汉理工大学材料科学与工程学院,湖北武汉430070

出　　处：《电力科技与环保》2022年第2期116-121,共6页Electric Power Technology and Environmental Protection

基　　金：国家能源集团科学技术研究院有限公司科技项目(H2020Y08)。

摘　　要：玻璃鳞片涂层是火电炉后环保设施的主要防腐材料。国产玻璃鳞片涂层在工程应用中性能参差不齐,大多数寿命短、性能差。由于工程环境和材料防腐性能的复杂性,实验室常用的化学介质浸泡法难以区分和预测玻璃鳞片涂层的工程表现。自行研制了动态模拟湿法脱硫环境(FGD)的仿真腐蚀试验装置,在此基础上,研究了4组进口玻璃鳞片涂层和3组自制涂层的腐蚀性能。研究结果发现:样品在动态腐蚀环境中均有鳞片外露、表面牛毛纹、树脂碎屑、断口呈脱粘和台阶面的腐蚀现象;试样腐蚀后弯曲性能下降幅度达5%~25%,硬度变化波动幅度在90%~108%;进口涂层腐蚀后增重幅度0.2%~1.2%,显著小于自制涂层约1.2%的幅度。研究结果为工程鉴别鳞片涂层耐腐蚀性能提供了新途径。Glass flake coating is the main anti-corrosive material for power plant environmental protection facilities.The properties of domestic glass flake coating in power engineering practice are uneven,most of them have a limited lifespan and poor performance.It is difficult to distinguish and predict the engineering performance of glass flake coating by chemical immersion method commonly used in laboratory because of the complexity of engineering environment and material corrosion resistance.A simulated corrosion test device for dynamic simulation of wet desulfurization environment(FGD)is developed.Based on this,the corrosion properties of four imported glass flake coatings and three self-made coatings are studied.The results show that the samples in the dynamic corrosion environment hare corrosion phenomena exposure to the glass flake,the surface of cattle hair grain,resin chips,the fracture of debonding and step surface;the bending property of the specimens decreases by 5%~25%and the hardness fluctuates by 90%~108%after corrosion;the weight gain of imported coating after corrosion is 0.2%~1.2%,which was significantly smaller than that of self-made coating about 1.2%.The results provide a new way to identify the corrosion resistance of scale coatings in engineering.

关 键 词：玻璃鳞片 湿法脱硫 动态模拟 防腐性能 

分 类 号：TK229.66[动力工程及工程热物理—动力机械及工程]