煤矸石自燃过程中多环芳烃含量的变化研究  

Study on Polycyclic Aromatic Hydrocarbons( PAHs) Content Changing of Coal Gangue during Spontaneous Combustion

作　　者：姜楠[1] 杨锋杰[1] 孟彦如[1] 张丽萍[1] 

机构地区：[1]山东科技大学地球科学与工程学院,山东青岛266590

出　　处：《工业安全与环保》2015年第4期69-72,共4页Industrial Safety and Environmental Protection

基　　金：国家自然科学基金(40802086);山东省自然科学基金(ZR2013DM008);教育部博士点基金(20113718110007)

摘　　要：采用室内模拟实验的方法,综合分析了煤矸石堆积自燃过程中多环芳烃(PAHs)含量的变化规律。研究发现,煤矸石自燃过程中,PAHs的生成与散失同时存在。较低的温度(60℃)对多环芳烃的生成具有一定的促进作用;500℃之后,PAHs全部散失或者降解为小分子物质,含量几乎为0。单个PAH的含量变化与总含量基本一致,仅是某一个PAH在不同温度下在总含量中所占的比例不同。自燃过程中高环的PAHs可能生成低环的PAHs使其含量增加。Indoor simulation experiment method is used to analyze migration characteristics of PAHs during the spontaneous combustion process of coal gangue in this paper .The study shows that PAHs dissipation and formation coexist during sponta-neous combustion of coal gangue .Lower temperature （60 ℃） has some certain promotion effects on PAHs formation ,PAHs are all lost or decomposed to micro-molecules and the content is nearly zero after 500 ℃ .Content variation of single PAH and total PAHs is almost the same ,only different is that content of some kind of PAH accounts for a different proportion of total PAHs content at different temperatures .High ring PAHs may be degraded to low ring PAHs to make its content in-creased during spontaneous combustion .

关 键 词：煤矸石 自燃 多环芳烃 含量变化 

分 类 号：X752[环境科学与工程—环境工程]