低NOx同轴燃烧锅炉水冷壁腐蚀分析  

Corrosion Analysis of Water Cooled Wall of Low NO_(x) Coaxial Combustion Boiler

作　　者：孙如珂 SUN Ruke(Shandong University of Science and Technology,Jinan 250031,Shandong,China)

机构地区：[1]山东科技大学,山东济南250031

出　　处：《能源与节能》2022年第3期79-82,共4页Energy and Energy Conservation

摘　　要：燃煤电站锅炉水冷壁的高温腐蚀现象较为普遍,特别是锅炉低氮燃烧后,水冷壁的高温腐蚀情况加剧,影响锅炉的安全运行。以670 MW超临界燃煤电站煤粉垂直浓淡分离燃烧锅炉水冷壁高温腐蚀为例,从煤粉分配、还原性气氛、二次风分配等方面分析了水冷壁高温腐蚀的原因,并制定了相应的防范措施。The high-temperature corrosion of the water cooled wall of coal-fired power station boilers is common,especially after the low nitrogen combustion of the boiler,the high-temperature corrosion of the water cooled wall is aggravated,which affects the safe operation of the boiler.Taking the high-temperature corrosion of the water cooled wall of a pulverized coal vertical concentration separation combustion boiler of a 670 MW supercritical coal-fired power station as an example,this paper analyzed the reasons for the high-temperature corrosion of the water cooled wall from the aspects such as coal powder distribution,reducing atmosphere and secondary air distribution,and formulated corresponding preventive measures.

关 键 词：水冷壁 高温腐蚀 浓淡分离 还原性 二次风 

分 类 号：TK229.63[动力工程及工程热物理—动力机械及工程]