烟气温湿度对电除尘脱除细颗粒的影响

发布时间：2018-09-10 08:03

【摘要】：采用搭建的350 m~3/h燃煤热态实验平台,测量电除尘出口不同粒径细颗物脱除效率,考察喷雾降温对电除尘放电特性、烟气酸露点、粉尘比电阻及除尘效率的影响.结果表明:当烟气温度由130℃降低到90℃,相对湿度由6%提高到12%时,电除尘击穿电压升高,粉尘比电阻降低;同时烟气酸露点温度随着相对湿度增加而提高;电除尘质量脱除效率变化不明显,但在0.1~1.0μm区间的颗粒数量脱除效率可提高10%;根据低低温电除尘运行经验可知,喷水降温到烟气酸露点以下,合理控制烟气灰硫比可避免产生烟道腐蚀.
[Abstract]:The removal efficiency of fine particles with different particle sizes at the outlet of electrostatic precipitator was measured using a 350mm3 / h coal-fired thermal experimental platform. The effects of spray cooling on discharge characteristics, acid dew point of flue gas, specific resistance of dust and efficiency of dust removal were investigated. The results show that when the flue gas temperature decreases from 130 鈩，

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