| 四川省不同类型工业锅炉VOCs源成分谱 |
| 摘要点击 1460 全文点击 268 投稿时间：2023-10-31 修订日期：2024-01-05 |
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| 中文关键词 挥发性有机物（VOCs） 工业锅炉 源成分谱 臭氧生成潜势（OFP） 排放因子 |
| 英文关键词 volatile organic compounds （VOCs） industrial boiler source profile ozone formation potential（OFP） emission factor |
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| 中文摘要 |
| 选取四川省7家不同类型工业锅炉测定VOCs排放组分,采用Teflon气袋采样和GC-MS/FID分析,建立含115种组分的VOCs源成分谱,并对不同类型工业锅炉排放VOCs的臭氧生成潜势（OFP）和排放因子进行分析.结果表明,不同类型工业锅炉排放的VOCs组分存在差异,含氧挥发性有机物（OVOCs）和卤代烃为生物质锅炉主要组分,合计贡献率60%以上,主要VOCs排放物种包括二氯甲烷、乙烯、丙酮、乙醛、乙炔和甲苯；卤代烃（50.7%）为燃煤锅炉主要排放组分,其次为芳香烃和OVOCs,二氯甲烷、乙烯、乙醛、乙酸乙酯和苯系物是主要VOCs排放物种；天然气锅炉中烷烃（59.7%）排放突出,以乙烷和异戊烷为主.燃煤、生物质和天然气工业锅炉VOCs排放的OFP值分别为6.1、 28.7和4.7 mg·m-3,烯烃为不同类型工业锅炉的主要OFP贡献组分（35.1%~59.5%）,生物质锅炉中OVOCs（32.8%）和燃煤锅炉中芳香烃（43.0%）的OFP贡献率也较大.测得四川省燃煤、生物质和天然气工业锅炉的VOCs排放因子分别为（17.3 ±10.7）g·t-1、（90.6 ±42.1）g·t-1和0.10 g·m-3,生物质锅炉VOCs排放水平高于燃煤锅炉,VOCs排放管控不容忽视. |
| 英文摘要 |
| Seven different types of industrial boilers in Sichuan Province were selected to determine the VOC emission components and the source profiles of VOCs containing 115 components were established using Teflon sampling and GC-MS/FID analysis. The ozone formation potential （OFP） and emission factors of VOCs from different types of industrial boilers were analyzed. The results showed that the VOC components emitted from different types of industrial boilers were different. Oxygenated volatile organic compounds （OVOCs） and halogenated hydrocarbons were the major components of biomass boilers, with a total contribution rate of more than 60%. The primary VOC emission species included dichloromethane, ethylene, acetone, acetaldehyde, acetylene, and toluene. Halogenated hydrocarbons （50.7%） were the chief emission components of coal-fired boilers, followed by aromatic hydrocarbons and OVOCs. Dichloromethane, ethylene, acetaldehyde, ethyl acetate, and benzene hydrocarbon were the major VOC emission species. The emission of alkanes （59.7%） in natural gas boilers was prominent, particularly ethane and isopentane. The OFP values of VOC emissions from coal-fired, biomass, and natural gas industrial boilers were 6.1, 28.7, and 4.7 mg·m-3, respectively. Alkenes were the primary OFP contributors （35.1%-59.5%） in different types of industrial boilers. OVOCs （32.8%） in biomass boilers and aromatic hydrocarbons （43.0%） in coal-fired boilers also contributed significantly to OFP. The VOC emission factors of coal-fired, biomass, and natural gas industrial boilers in Sichuan Province were （17.3 ± 10.7） g·t-1, （90.6 ± 42.1） g·t-1, and 0.10 g·m-3, respectively. The VOC emission level of biomass boilers was higher than that of coal-fired boilers and VOC emission control could not be ignored. |
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