热力发电Issue(8)：104-108,112,6.DOI:10.3969/j.issn.1002-3364.2015.08.104
对冲燃烧锅炉水冷壁高温硫腐蚀分析及防治
Cause analysis and countermeasures of high-temperature sulfur corrosion of water wall in an opposed firing boiler
许涛 1李敏 2李春曦1
作者信息
- 1. 华北电力大学能源动力与机械工程学院，河北 保定 071003
- 2. 国网河南省电力公司电力科学研究院，河南 郑州 450052
- 折叠
摘要
Abstract
High temperature corrosion occurred on water wall of a 600 MW unit opposed firing boiler.The corrosion inspection and flue gas atmosphere test indicates that the corrosion type was high temperature sulfur corrosion and the corrosion got more serious on middle part of the side walls.The concentration of H2S in flue gas was very high near the side wall surface,which reached higher than 0.1%.In order to con-trol the high temperature corrosion,a type of closing-to-wall air device on the side wall was designed.The test results show that,after the transformation,the H2 S concentration at side A and side B of the boiler re-duced by 83.20% and 87.16%,respectively,and the corresponding O2 content increased by 224.5% and 1 5 5 .3%,respectively.Thus,the reducing atmosphere was alleviated near the water wall and the high tem-perature corrosion can be effectively controlled.关键词
超临界/600 MW机组/锅炉/对冲燃烧/水冷壁/高温硫腐蚀/贴壁风/腐蚀性气体Key words
supercritical/600 MW unit/boiler/opposed firing/water wall/high temperature sulfur corro-sion/closing-to-wall air/corrosive gas分类
能源科技引用本文复制引用
许涛,李敏,李春曦..对冲燃烧锅炉水冷壁高温硫腐蚀分析及防治[J].热力发电,2015,(8):104-108,112,6.
