电厂湿法脱硫装置腐蚀与防护现状  

Corrosion and Protection Status on Wet Desulfurization Equipment in Power Plant

作　　者：朱启武[1] 何笑微[2] 周永璋[1] 娄菲菲[1] 叶琴琴[1] 

机构地区：[1]南京工业大学环境学院,江苏南京210009 [2]新乡职业技术学院,河南新乡453006

出　　处：《中国材料科技与设备》2013年第2期13-16,共4页Chinese Materials Science Technology & Equipment

摘　　要：本文根据电厂湿法烟气脱硫（FGD）工艺指出了系统中常见的几种腐蚀类型，主要有化学腐蚀、电化学腐蚀、机械腐蚀、结晶腐蚀；分析了SO42-、C1-、F-、温度、pH值和流速对腐蚀的影响；归纳了脱硫装置相关的国内外防腐方法。常用的防腐材料有：不锈钢、复合轧制钢板或内贴耐蚀钢板、合金、橡胶衬里和玻璃鳞片衬里等；指出了如何解决Cl-和F-积累又不消耗过多能源将是今后需要解决的问题。This paper pointed out that several common types of corrosion in the process of wet flue gas desulfurization （FGD） systems of power plant, chemical corrosion, electrochemical corrosion, mechanical erosion, crystalline corrosion; A nalysis the influence of SO4 2- , Cl-, F-, temperature, pH, and flow rate on the corrosion; summarized anticorrosive methods of desulfurization equipment at home and abroad. The commonly used anti--corrosion materials： stainless steel, composite rolled plates or stickers corrosion resistant steel plate, alloy, rubber lining and glass flake lining; pointed out how to solve the Cl and F accumulation without excessive consumption of energy will need to be addressed in the future.

关 键 词：湿法脱硫 腐蚀 硫酸铵浆液 闭路循环系统 防护方法 

分 类 号：X701.3[环境科学与工程—环境工程]