锅炉技术2026，Vol.57Issue(4)：41-45,5.
电厂锅炉高温再热管烟气侧高温腐蚀原因分析
Analysis on Corrosion on Flue Gas Side of High Temperature Reheater Tubes in Power Plant Boiler
罗昌福 1胡明 1李文博 1地里扎提·地里夏提 1杨博闻 1祁博武 1李鹏辉1
作者信息
- 1. 华电电力科学研究院有限公司,浙江 杭州 310030
- 折叠
摘要
Abstract
In view of the serious problem of high-temperature corrosion on the flue gas side of the high-temperature reheater of a power plant,the causes of high-temperature corrosion of the high-temperature reheater tube of a TP347HFG boiler used for about 40,000 hours in a power plant were analyzed through macroscopic analysis,microscopic observation,scanning electron microscopy,energy spectrum composition test and room temperature mechanical test.The results showed that the aging degree of the reheater tubes reached grade 3.Due to the temperature difference between the flue gas side and rear side,the hardness,tensile strength and yield strength of the flue gas side are lower than those of the rear side,but the elongation is higher.The mechanical properties of both meet the ASTM A213/A213M-2019 standard.The high concentration of SO2 and CO in the uneven boiler air supply and local flue gas is the main cause of high-temperature corrosion,which is mainly manifested as sulfur corrosion and corrosion caused by reducing atmosphere.关键词
TP347HFG/常温力学性能/高温腐蚀Key words
TP347HFG/room temperature mechanical properties/high-temperature cor-rosion分类
矿业与冶金引用本文复制引用
罗昌福,胡明,李文博,地里扎提·地里夏提,杨博闻,祁博武,李鹏辉..电厂锅炉高温再热管烟气侧高温腐蚀原因分析[J].锅炉技术,2026,57(4):41-45,5.
