民用燃煤挥发性有机物(VOCs)排放特征研究  

Emission Characteristics of Volatile Organic Compounds (VOCs)Emitted From Residential Coal Combustion

作　　者：王昭怡 张仟 王帅 张瑞 张晖 刘君侠[1] 刘琼玉[1] Wang Zhaoyi;Zhang Qian;Wang Shuai;Zhang Rui;Zhang Hui;Liu Junxia;Liu Qiongyu(Hubei Key Laboratory of Industrial Fume and Dust Pollution Control,Jianghan University,Wuhan,Hubei 430056,China)

机构地区：[1]江汉大学工业烟尘污染控制湖北省重点实验室,湖北武汉430056

出　　处：《绿色科技》2022年第6期71-74,77,共5页Journal of Green Science and Technology

基　　金：国家级大学生创新训练计划项目(编号:202011072021)。

摘　　要：探讨了烟煤、无烟煤、蜂窝煤等典型民用燃煤燃烧烟气中挥发性有机物(VOCs)的组成特征及臭氧形成潜势(OFP)。结果表明:燃煤烟气的VOCs物种组成随着煤种类及燃烧温度的变化而呈现较大差异,烟煤在较低燃烧温度下(460℃)排放的VOCs物种种类较多且TVOC浓度较高,排放的VOCs种类和TVOC浓度均随着燃烧温度的增加而明显减少;无烟煤燃烧烟气排放的VOCs主要是2-甲基丁烷和正己烷;蜂窝煤排放的VOCs主要是2-甲基丁烷。苯系物和烷烃是民用燃煤排放的主要VOCs种类,其中烟煤排放的VOCs主要为苯系物和烷烃,而无烟煤和蜂窝煤排放的VOCs主要为烷烃。臭氧形成潜势(OFP)分析结果表明:烟煤、无烟煤和蜂窝煤对臭氧生成的贡献率总体上呈现随温度升高而降低的趋势;烟煤对臭氧生成的贡献以苯系物为主,无烟煤和蜂窝煤对臭氧生成的贡献以烷烃为主。Typical civil coals,were placed in a controllable combustion device for combustion test.The composition characteristics and Ozone Formation Potential(OFP)of VOCs emitted from civil coal were analyzed,including bituminous coal,anthracite and honeycomb coal.The results showed that the VOCs species composition of coal-fired flue gas varies greatly with the change of coal types and combustion temperature.There were more VOCs species and higher TVOC concentration emitted from bituminous coal at lower combustion temperature (460℃). The VOCs species and TVOC concentration decreased significantly with the increase of combustion temperature. The main VOCs species emitted from anthracite combustion flue gas were 2-methylbutane and n-hexane. The main VOCs species emitted from honeycomb coal was 2-methylbutane. Benzene series and alkanes were important groups of VOCs emitted from civil coal combustion. The VOCs emitted from bituminous coal are mainly benzene series and alkanes, while the VOCs emitted from anthracite and honeycomb coal are mainly alkanes. The analysis results of OFP showed that the contribution rates of bituminous coal, anthracite and honeycomb coal to ozone formation generally decrease with the increase of temperature. The contribution of bituminous coal to ozone formation was mainly benzene series, and the contribution of anthracite and honeycomb coal to ozone formation was mainly alkanes.

关 键 词：民用燃煤 挥发性有机物(VOCs) 源谱 排放特征 臭氧生成潜势(OFP) 

分 类 号：X83[环境科学与工程—环境工程]