【作者】 陈维旺； 唐伟； 徐海涛； 朱勇敢； 胡坤； 唐少春； 陆洪彬；

【Author】 Chen Weiwang;Tang Wei;Xu Haitao;Zhu Yonggan;Hu Kun;Tang Shaochun;Lu Hongbin;Jiangsu Co-win Environmental Technology Co., Ltd;School of Chemistry and Chemical Engineering, Nantong University;High-Tech Institute, Nanjing University;Hangzhou Everbright Environmental Energy Co., Ltd;

【机构】 江苏科辉环境科技有限公司； 南通大学化学化工学院； 海安南京大学高新技术研究院； 光大环保能源(杭州)有限公司；

【摘要】 对垃圾焚烧电厂尾部净烟道腐蚀产物进行了组成分析,探讨了可能的腐蚀机理,针对性地研制了疏水防护涂料并在工况条件下评估其防护效果。研究发现:腐蚀产物主要有铁的氧化物、氯化物、硫化物及少量Ca、K、Zn氧化物组成,高温酸性气体结露腐蚀和积灰腐蚀是引起和加速烟道腐蚀的主要原因。研制的防护涂料能够显著提高烟道表面疏水性能,减少积灰发生,提高防腐蚀性能,服役时间达到常规防腐涂料4倍以上。更多还原

【Abstract】 Composition of the corrosion product taken from the back-end gas flue of waste incineration power plant was analyzed, and the possible corrosion mechanisms were revealed in this paper. The hydrophobic coating was developed and its protective properties were evaluated under working conditions. It is found that the corrosion products mainly consist of iron oxide,chloride, sulfide, and fewer oxides containing Ca, K, and Zn. The corrosion mainly results from the moisture condensation and the ash adhesion under the high temperature, moisture, and acidic gases conditions. The developed hydrophobic coating on the gas flue improves the hydrophobic property, reduces the ash adhesion, and significantly improves the anti-corrosion property. Compared with the conventional anti-corrosion coating, the hydrophobic and anti-corrosion coating increases the service time of the gas flue by more than 4 times.更多还原