收尘区脉冲供电对电除尘器收集性能的影响

建立了双区电除尘器实验模型,研究了预荷电压、不同供电方式下极板间距、电极型式对双区电除尘器收尘效果的影响.结果表明:随着预荷电压逐渐升高,除尘效率也随之增加,双区除尘效果明显优于单区的除尘效果.脉冲供电对电除尘器的除尘性能影响明显,与直流供电相比,脉冲供电对PM25的分级效率可提高16.9%;在较高的电压时,极板间距为...

Influence of pulse supply in collecting area on collection performance of electrostatic precipitator

The two-stages electrostatic precipitator (ESP) model was set up. The dust collection efficiency of two-stages electrostatic precipitator (ESP) was investigated under different parameters, including pre-charge voltage, power supply mode, electrode-plate space distance, and electrode type. The result showed that the dust collection efficiency of two-stages ESP increased with increasing of pre-charge voltage, and was better than that of single-stage ESP. The dust collection efficiency under pulse power was better than that under DC supply power; as to PM_2.5, which grade efficiency is over 16.9% highter than that of in DC supply power.The dust collection efficiency at electrode-plate space distance 400 mm was higher than that of at 300 mm, and the migration was depply enhanced. Nail electrode had a more contribution than smooth electrode under same base supply voltage. The migration velocity of PM₂₀ under pulse power was over 54.22% highter than that under DC supply power.