CAJ | 학술논문

当前我国面临严重的大气细颗粒物( PM2.5)污染，燃煤电厂是大气中PM2.5的重要来源之一.为了实现国家“十一五”和“十二五”规划对二氧化硫( SO2)和氮氧化物( NOx )的总量减排目标，燃煤电厂大规模安装烟气脱硫和脱硝设施，这虽然减少了气态污染物转化生成的二次PM2.5 ，但另一方面也会对烟气中PM2.5的物理化学特征产生影响，有可能增加一次PM2.5的排放.本文综述了燃煤电厂排放PM2.5及其水溶性离子的粒径分布特征，重点介绍了脱硫和脱硝这两种烟气处理设施对燃煤电厂排放PM2.5的影响原理及相关研究结果，特别是对细颗粒物中水溶性离子(如SO2-4、 Ca2＋和NH4＋)的影响.在目前我国PM2.5污染十分严重和燃煤电厂大量安装脱硫和脱硝装置的背景下，定量研究脱硫和脱硝对PM2.5排放特征的影响具有十分重要的意义.
당전아국면림엄중적대기세과립물( PM2.5)오염，연매전엄시대기중PM2.5적중요래원지일.위료실현국가“십일오”화“십이오”규화대이양화류( SO2)화담양화물( NOx )적총량감배목표，연매전엄대규모안장연기탈류화탈초설시，저수연감소료기태오염물전화생성적이차PM2.5 ，단령일방면야회대연기중PM2.5적물이화학특정산생영향，유가능증가일차PM2.5적배방.본문종술료연매전엄배방PM2.5급기수용성리자적립경분포특정，중점개소료탈류화탈초저량충연기처리설시대연매전엄배방PM2.5적영향원리급상관연구결과，특별시대세과립물중수용성리자(여SO2-4、 Ca2＋화NH4＋)적영향.재목전아국PM2.5오염십분엄중화연매전엄대량안장탈류화탈초장치적배경하，정량연구탈류화탈초대PM2.5배방특정적영향구유십분중요적의의.
Currently, China suffers from serious pollution of fine particulate matter ( PM2. 5 ) . Coal-fired power plant is one of the most important sources of PM2. 5 in the atmosphere. To achieve the national goals of total emission reductions of sulfur dioxide ( SO2 ) and nitrogen oxides (NOx) during the 11th and 12th Five-Year Plan, most of coal-fired power plants in China have installed or will install flue gas desulfurization (FGD) and flue gas denitrification (DNOx) systems. As a result, the secondary PM2.5, generated from gaseous pollutants in the atmosphere, would be decreased. However, the physical and chemical characteristics of PM2. 5 in flue gas would be affected, and the emission of primary PM2. 5 might be increased. This paper summarized the size distributions of PM2. 5 and its water soluble ions emitted from coal-fired power plants, and highlighted the effects of FGD and DNOx on PM2. 5 emission, especially on water soluble ions ( such as SO2-4 , Ca2+ and NH4+) in PM2. 5 . Under the current condition of serious PM2. 5 pollution and wide application of FGD and DNOx, quantitative study on the effects of FGD and DNOx installation on emission characteristics of PM2.5 from coal-fired power plants is of great necessity.