摘要
燃煤电厂湿法脱硫后烟气中含有SO_3、HCl、HF等强腐蚀性物质,虽然含量不高,但对烟囱抗腐蚀性能提出了更高的要求。湿法脱硫后加装湿式电除尘器,对SO_3、HCl、HF等有一定的脱除效果,为研究湿式电除尘器对其脱除效率,在某电厂330 MW机组金属极板式湿式电除尘器进出口对烟气进行采样,检测SO_3、HCL、HF的浓度,得出湿式电除尘器对这些强腐蚀性酸性气体的脱除效率分别为45%、85%及65%左右。结果表明湿式电除尘器可有效脱除烟气中的腐蚀性气体,降低其在烟囱入口浓度,因而可减缓烟囱腐蚀。
In coal-fired power plants, the flue gas after wet desulphurization still contains strong corrosive substances such as SO3,HCl, HF and so on. Higher requirements are put forward for the corrosion resistance of the chimney even though the content is notthat high. The wet electrostatic precipitator installed after the desulphurization has certain removal effect for the corrosive substances.In order to study the removal efficiency of wet electrostatic precipitator, samples were taken from the inlet and outlet flue gas of ametal plate type wet precipitator in a 330 MW unit of a power plant to detect the concentration of SO3, HCl and HF. It is concludedthat the removal efficiency of the wet electrostatic precipitator for the strong corrosive acid gases was 45%, 85% and 65%,respectively. The results show that the wet electrostatic precipitator can effectively remove the corrosive gas in the flue gas andreduce its concentration at the inlet of the chimney, and therefore the corrosion rate of chimney can be slowed down.
作者
王贵华
朱斌帅
张海珍
韩海燕
WANG Guihua;ZHU Binshuai;ZHANG Haizhen;HAN Haiyan(Huadian Electric Power Research Institute Co.,Ltd.,Hangzhou 310030,China;Hangzhou Huadian Energy Engineering Co.,Ltd.,Hangzhou 310030,China)
出处
《中国电力》
CSCD
北大核心
2018年第12期170-174,共5页
Electric Power
基金
中国华电集团科技项目(330 MW燃煤机组湿法电除尘器协同脱除PM_(2.5)技术及示范工程
CHDKJ13-01-41)~~
关键词
燃煤电厂
湿法脱硫
湿式电除尘器
SO3
HCL
HF
脱除效率
coal-fired power plant
wet desulfurization
wet electrostatic precipitator
SO3
HCl
HF
removal efficiency
