CAJ | 학술논문

静电除尘器已广泛应用于工业除尘领域，其对粗颗粒收集效率高达99.9%以上，但在PM2.5范围内存在穿透窗口，难以满足日趋严格的烟气污染物排放环保标准。文中介绍了3种发展的电除尘新技术——低低温电除尘器、湿式电除尘器和电袋除尘器，分别采用实验与理论分析的方法对3种电除尘器的脱除机理与脱除性能及在国内外燃煤电站的应用情况进行了探讨，结果表明，电除尘新技术可有效控制PM2.5的排放，达到粉尘低于20 mg/m3排放的目标，并可实现SO3酸雾及汞等重金属排放的协同控制。
정전제진기이엄범응용우공업제진영역，기대조과립수집효솔고체99.9%이상，단재PM2.5범위내존재천투창구，난이만족일추엄격적연기오염물배방배보표준。문중개소료3충발전적전제진신기술——저저온전제진기、습식전제진기화전대제진기，분별채용실험여이론분석적방법대3충전제진기적탈제궤리여탈제성능급재국내외연매전참적응용정황진행료탐토，결과표명，전제진신기술가유효공제PM2.5적배방，체도분진저우20 mg/m3배방적목표，병가실현SO3산무급홍등중금속배방적협동공제。
ABSTRACT:The Electrostatic Precipitator (ESP) has been used widely in coal-fired power plants and other industrial plants. Although the collection efficiency of ESP higher than 99.9% for coarse particles, it exhibits relatively low performance in capturing of fine particles (PM2.5), in which a penetrating window exists in the range of 0.1-1.0μm. Therefore, several technologies, including extra cold-side ESP, wet ESP and hybrid ESP/BAG device, have been developed for the efficient removal of PM2.5 to meet the increasingly strict emission standards. In this paper, the removal mechanisms and performances of these three kinds of new emerging technologies, which are all on the basis of ESP principle, were analyzed and tested by the experimental and theoretical investigations. Furthermore the comparisons on the practical applications in coal-fired power plants were discussed. The results indicate that the synergetic capture of PM2.5, SO3acid mist and even mercury can be effectively achieved by employing the single or coupled approach of these three new technologies.