CAJ | 학술논문

　　采用燃煤热态试验系统，进行了分别在电除尘器和脱硫塔入口烟气、脱硫液中添加化学团聚剂促进电除尘、湿法烟气脱硫系统脱除细颗粒物的试验研究；试验考察了团聚剂添加前后细颗粒物浓度及其粒度分布的变化，以及团聚剂类型、浓度、添加点烟温等对细颗粒物脱除效果的影响。结果表明：化学团聚技术可使细颗粒物平均粒径增大约4倍，数浓度降低40%以上；在电除尘器和脱硫塔入口烟气、脱硫液中添加化学团聚剂均可有效提高细颗粒物的脱除效果，其中在烟气中添加团聚剂的作用效果与添加点处烟温存在密切关系，高温烟气(≥250℃)中试验采用的有机团聚剂容易失效，而无机团聚剂仍能维持相同效果。
　　채용연매열태시험계통，진행료분별재전제진기화탈류탑입구연기、탈류액중첨가화학단취제촉진전제진、습법연기탈류계통탈제세과립물적시험연구；시험고찰료단취제첨가전후세과립물농도급기립도분포적변화，이급단취제류형、농도、첨가점연온등대세과립물탈제효과적영향。결과표명：화학단취기술가사세과립물평균립경증대약4배，수농도강저40%이상；재전제진기화탈류탑입구연기、탈류액중첨가화학단취제균가유효제고세과립물적탈제효과，기중재연기중첨가단취제적작용효과여첨가점처연온존재밀절관계，고온연기(≥250℃)중시험채용적유궤단취제용역실효，이무궤단취제잉능유지상동효과。
Experiments were conducted on an experimental coal-fired thermal system to study the removal of fine particles by electrostatic precipitator (ESP) and wet flue gas desulfurization (WFGD) system. Agglomerant solutions were added into flue gas and desulphurizing agents at the inlets of electrostatic precipitator (ESP) and desulphurization scrubber, respectively. Changes of number concentration and diameter distribution of particles were tested before and after the agglomeration, and the influences of species and concentration of agglomerant solutions, and the temperature of flue gas at the point of addition were analyzed. The results show that chemical agglomeration can increase the average size of particles by four times and decrease the number concentration of particles by 40%. Both the two addition sites of agglomerants have a positive effect on improving the removal of fine particles, and the performance of agglomerants added into flue gas has a close relationship with the temperature of flue gas. Organic agglomerant solutions have low efficiency in high-temperature (≥250℃) flue gas while inorganic ones can keep excellent performance.