烟道中同极性荷电粉尘的凝并研究  

STUDY ON AGGLOMERATION OF HOMO-POLARITY PARTICLES IN FLUE

作　　者：周建刚[1] 刘栋[1] 白敏菂[1] 邱秀梅[1] 

机构地区：[1]大连海事大学环境工程研究所,辽宁大连116026

出　　处：《环境工程》2009年第2期12-14,62,共4页Environmental Engineering

基　　金：国家自然科学基金资助项目(60471036和50578020)

摘　　要：针对目前电除尘器对微小颗粒粉尘捕集效率低、本体体积庞大的问题，突破传统预荷电装置的应用模式，将预荷电装置安装于电除尘器模拟烟道中，进行了高压电场荷电凝并研究，考察了凝并电场频率、电场强度以及电场类型对粉尘凝并效果的影响。实验结果表明：可以大幅度降低粒径在0．3～0．5舯的粉尘百分比；有效增加粒径〉1μm的粉尘百分比；可以有效提高模拟电除尘器对细小颗粒粉尘的捕集效率，有望减少电除尘器的本体体积。The high-voltage electric field agglomeration experiment was conducted, which broke through the customary pre-charged facility usage manner, which was carried out under the circumstance that the pre-eharged facility was installed in the flue of the electrostatic precipitator to contrapose the electrostatic precipitator problem of the large volume and low efficiency of micro-particles trapping at present. The result showed that the percentage of particles whose diameter was between 0.3 μm and 0.5 μm could be highly decreased while the percentage of particles whose diameter was beyond 1 μm could be highly increased. The research could increase the micro-particles trapping efficiency of the electrostatic precipitator and decrease the electrostatic precipitator volume effectively.

关 键 词：凝并电场 预荷电 粉尘粒径 电除尘器 

分 类 号：X701.2[环境科学与工程—环境工程]