[中国四川不同类型工业锅炉的挥发性有机物来源概况]。

Q2 Environmental Science Huanjing Kexue/Environmental Science Pub Date : 2024-10-08 DOI:10.13227/j.hjkx.202310244
Ying-Jie Li, Li Han, Cheng-Hui Wang, Yang Bai, Tao Jiang
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引用次数: 0

摘要

选取了四川省 7 台不同类型的工业锅炉,采用聚四氟乙烯取样和 GC-MS/FID 分析方法,确定了挥发性有机物的排放成分,并建立了含有 115 种成分的挥发性有机物的源剖面图。臭氧形成潜势(OFP)和不同类型工业锅炉的 VOC 排放因子进行了分析。结果表明,不同类型工业锅炉排放的挥发性有机化合物成分不同。含氧挥发性有机化合物(OVOCs)和卤代烃是生物质锅炉的主要成分,总贡献率超过 60%。挥发性有机化合物的主要排放物包括二氯甲烷、乙烯、丙酮、乙醛、乙炔和甲苯。卤代烃(50.7%)是燃煤产生的主要排放物。是燃煤锅炉的主要排放成分,其次是芳香烃和 OVOCs。二氯甲烷、乙烯、乙醛、乙酸乙酯和苯碳氢化合物是挥发性有机化合物的主要排放物。烷烃(59.7%)的排放在天然气锅炉中尤为突出。尤其是乙烷和异戊烷。燃煤、生物质和天然气工业锅炉排放的挥发性有机化合物的 OFP 值分别为 6.1、28.7 和 4.7 mg-m-3。在不同类型的工业锅炉中,烯类是主要的 OFP 贡献者(35.1%-59.5%)。在不同类型的工业锅炉中。生物质锅炉中的 OVOCs(32.8)生物质锅炉中的 OVOC(32.8%)和燃煤锅炉中的芳香烃(43.0燃煤锅炉中的芳香烃(43.0%)也在很大程度上增加了 OFP。四川省燃煤、生物质和天然气工业锅炉的挥发性有机物排放因子分别为(17.3 ± 10.7)g-t-1、(90.6 ± 10.7)g-t-1和(90.6 ± 10.7)g-t-1。g-t-1、(90.6 ± 42.1)g-t-1 和 0.10 g-m-3。生物质锅炉的 VOC 排放水平高于燃煤锅炉,VOC 排放控制不容忽视。
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[Source Profiles of VOCs for Different Types of Industrial Boilers in Sichuan, China].

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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来源期刊
Huanjing Kexue/Environmental Science
Huanjing Kexue/Environmental Science Environmental Science-Environmental Science (all)
CiteScore
4.40
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0.00%
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15329
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