超临界直流锅炉水冷壁管高温硫腐蚀的成因及防治  

Causes and Prevention of High Temperatures Sulfur Corrosion of Water Wall Tubes of Supercritical Concurrent Boiler

作　　者：贺永冰[1,2] 王卫军[3] 李长鸣[3] 何俊峰[3] 孙厚礼 

机构地区：[1]鹤壁丰鹤发电有限责任公司,河南省鹤壁市458008 [2]武汉大学,武汉市430072 [3]河南电力试验研究院,郑州市450007

出　　处：《电力建设》2010年第10期61-66,共6页Electric Power Construction

摘　　要：当超临界直流锅炉燃用煤的硫含量St.ar平均值在1.5%以上时,一般会出现高温腐蚀。通过对某超临界前、后墙对冲燃烧直流锅炉所送检的水冷壁管烟气侧腐蚀状况,采用目视、体视镜、电镜、能谱以及X射线衍射分析等方法进行检查分析,确定了高温硫腐蚀的产物,并对成因进行分析,然后提出防治的措施和建议,为预防高温硫腐蚀提供参考。When the content of sulfur St.ar is more than 1.5% in the coal,high temperature sulfur corrosion will generally occur in supercritical concurrent boilers.An analysis is made of the corroded water wall samples of a supercritical concurrent boiler by such means as visual inspection,stereoscope,electron microscope,energy spectrum and X ray diffraction,and the production of high temperature sulfur corrosion is determined.Based on the analysis of the causes for the corrosion,some prevention measures are proposed,which can be used as a reference for prevention of high temperature sulfur corrosion.

关 键 词：超临界 直流锅炉 水冷壁管 高温硫腐蚀 能谱分析 X射线衍射分析 

分 类 号：TK223.31[动力工程及工程热物理—动力机械及工程]