【摘要】 我国很多城市存在颗粒粉尘浓度超标的现象,可吸入性粉尘无论对环境和人体都有较大的危害,治理烟尘污染刻不容缓,但粉尘粒径小而难以被除尘器直接捕集,而荷电凝并可通过电场的作用使粉尘粒子荷电而发生凝并,增大有效直径从而便于捕集.综述了国内外电凝并技术的研究进展,主要包括交变电场中同极性荷电颗粒凝并、直流电场中异极性荷电颗粒凝并、交变电场中异极性荷电颗粒凝并;介绍了几种荷电凝并方法,提出提高荷电凝并几率方法的主要发展趋势,为电凝并技术的实际应用和装备开发提供参考.更多还原

【Abstract】 The phenomenon of excessive concentration of particulate dust exists in many cities in China. Inhalable dust has great harm to the environment and human body,so it is imperative to control the dust pollution. However, it is difficult to be directly caught by precipitator because of the small particle size. Agglomeration is a simple and easy way to accumulate the dust particles by the action of electric field and to coagulate and increase the effective diameter to facilitate trapping. The agglomeration of homopolar and heteropole charged particles in alternating electric field,the coulomb agglomeration of heteropole charged particles and the agglomeration of heteropole charged particles in direct-current electric field are introduced. Several new electric agglomeration structures are introduced,and the main development tendency is proposed, which provides theoretical and technical support for the industrial application of electric agglomeration technology.更多还原