烟气脱硫吸收塔入口烟道合金钢贴衬设计选型及焊接工艺分析  

Alloy Steel Backing Design of Inlet Flue Gas Duct of FGD Absorber and Welding Technique Analysis

作　　者：张春雷[1] 程诺伟[1] 

机构地区：[1]广东省电力试验研究所,广州510600

出　　处：《广东电力》2009年第1期78-81,共4页Guangdong Electric Power

摘　　要：针对超临界机组锅炉烟气脱硫(FGD)吸收塔入口烟道的腐蚀特征,提出防腐贴衬材料的选型应以耐蚀性为基础,通过对常用材料腐蚀数据的对比,得出C276系列合金是应用于电厂脱硫系统入口烟道腐蚀环境的首选金属材料,并对常用的哈氏合金C276的焊接工艺进行了分析,指出了需要注意的问题。In light of the corrosion character of the inlet flue gas duct of flue gas desulfurization （FGD） absorber alloy steel for a supercritical boiler, it is indicated that the selection of anti-corrosion backing material should be based on corrosion resistance. By comparing the corrosion data of common material, it is concluded that alloy C276 is the best choice for the corrosion environment in the inlet flue gas duct of power plant FGD system. The common welding techniques of Haste alloy C276 are also analyzed with matters needing attention pointed out.

关 键 词：烟气脱硫(FGD) 吸收塔 入口烟道 防腐贴衬 贴衬材料 哈氏合金 

分 类 号：TG174[金属学及工艺—金属表面处理] TG441[金属学及工艺—金属学]