Polycyclic Aromatic Hydrocarbons: Temperature Driven Formation and Behavior during Coal Combustion in a Coal-Fired Power Plant
Polycyclic Aromatic Hydrocarbons: Temperature Driven Formation and Behavior during Coal Combustion in a Coal-Fired Power Plant
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DOI：
10.1021/ef401467z
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发表时间：
2013-09
期刊：
影响因子：
5.3
通讯作者：
M. Pergal;Ž. Tešić;A. Popović
中科院分区：
文献类型：
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作者：
M. Pergal;Ž. Tešić;A. Popović
在距离塞尔维亚首都贝尔格莱德50公里的“Nikola Tesla B”发电厂进行的燃烧温度实验中，研究了16种美国环境保护局(U.S.EPA)优先考虑的多环芳烃(PAHs)的形成和行为与温度的原位相关性。定期采集用过的褐煤和褐煤燃烧副产物样品，用二氯甲烷超声萃取法提取样品中的多环芳烃，并用气相色谱-质量选择检测(GC/MSD)进行分析。建立了多环芳烃分子的降解和形成过程。通过对所得数据的关联，发现了不同的多环芳烃合成机理，并证实了苯基加成/环化(PAC)和氢提取/乙炔加成(HACA)机理的存在。结果表明，燃烧温度的升高对总PAH浓度的增加有一定的影响。
In situ dependence of the formation and behavior of 16 United States Environmental Protection Agency (U.S. EPA) priority polycyclic aromatic hydrocarbons (PAHs) upon the temperature was examined during the experiment carried out on combustion temperatures between 930 and 998 °C in the “Nikola Tesla B” power plant, located 50 km from the Serbian capital, Belgrade. Samples of used lignite and lignite combustion byproducts were collected on a regular basis, and PAHs in collected samples were extracted using ultrasonic extraction with methylene chloride and analyzed by gas chromatography with mass selective detection (GC/MSD). Degradation and formation of PAH molecules were established. Different PAH synthesis mechanisms were noticed by correlation of obtained data, and the presence of phenyl addition/cyclization (PAC) and hydrogen abstraction/acetylene addition (HACA) mechanisms was confirmed. It was concluded that the increase of the combustion temperature has an influence on the increase of total PAH conce...