变流场电除尘与常规电除尘技术性能对比研究

Comparative study on technical performance of variable flow field electrostatic precipitator and conventional electrostatic precipitator

通过对变流场电除尘技术与常规电除尘技术的本体结构特征、荷电粉尘在电场中的受力、有效收尘面积及电场风速进行分析,搭建了冷态物理试验中试平台,对变流场电除尘技术与常规电除尘技术进行了除尘性能试验。结果表明,变流场电场结构在增加总集尘面积、改变气体流向、降低电场风速的条件下,除尘性能没有得到突破,且除尘效率略有下降。从变流场格栅极板结构特性及电流密度角度分析了其除尘效率差的原因,同时提出了改进措施,以期提高变流场电除尘器运行效率,为电除尘器电场结构优化和设计提供参考。

By analyzing the structural characteristics of the variable flow field electrostatic precipitator technology and conventional electrostatic precipitator technology,the force of charged dust in the electric field,the effective dust collection area,and the wind speed of electric field were analyzed,and a cold physical test pilot platform was built to conduct dust removal performance tests on variable flow field electrostatic precipitator technology and conventional electrostatic precipitator technology.The results showed that under the conditions of increasing the total dust collection area,changing the gas flow direction,and reducing the electric field wind speed of the electric field,the dust removal performance of the variable flow field electric field structure has not been breakthrough,and the dust removal efficiency has slightly decreased.The possible reasons for the insufficient dust removal efficiency of variable flow field grid plates were analyzed from the perspective of structural characteristics and current density.At the same time,improvement measures were proposed to improve the operational efficiency of variable flow field electrostatic precipitators,thereby providing a reference for the optimization and design of electric field structures in electrostatic precipitators.