中国电力2017，Vol.50Issue(5)：7-12,45,7.DOI:10.11930/j.issn.1004-9649.2017.05.007.06
660 MW超临界对冲火焰锅炉水冷壁高温腐蚀原因探究
Study on the Cause of High-Temperature Corrosion of Water Wall Tubes in a 660-MW Supercritical Opposed Firing Boiler
刘昕昶 1鄢晓忠 1敬佩 1李佩 1张艺漫 1吴爱军 2陈绍龙2
作者信息
- 1. 长沙理工大学能源与动力工程学院,湖南长沙410004
- 2. 湖南宝庆煤电有限公司,湖南邵阳422000
- 折叠
摘要
Abstract
In order to explore the causes and the mechanism of frequent high-temperature corrosion in the supercritical opposed firing boilers,the cause analysis is carried out for a 600-MW boiler through the coal quality analysis,the wareswall thickness measurement,the waterwall surrounding atmosphere testing,and the corrosion products analysis by using SEM,EDS and XRD.The study results show that the waterwall high-temperature corrosion occurs mainly in the high-temperature load areas of the burners at all levels on both sides and spreads unevenly.The unevenness is attributed to the high-temperature sulfurization and oxidation caused by the sulfide and the oxygen in the combustion.In addition,the reducing atmosphere formed in the lower part of the furnace leads to the increase of the H2S concentration making the high-temperature corrosion at this part worse.关键词
超临界锅炉/高温腐蚀/SEM分析/EDS分析/XRD分析/气氛条件/腐蚀原因Key words
supercritical boiler/high-temperature corrosion/SEM analysis/EDS analysis/XRD analysis/atmosphere condition/cause of corrosion分类
能源科技引用本文复制引用
刘昕昶,鄢晓忠,敬佩,李佩,张艺漫,吴爱军,陈绍龙..660 MW超临界对冲火焰锅炉水冷壁高温腐蚀原因探究[J].中国电力,2017,50(5):7-12,45,7.
