Zhou Zi-Hang, Deng Ye, Zhou Xiao-Ling, Wu Ke-Ying, Tan Qin-Wen, Yin Dai-Juan, Song Dan-Lin, Chen Qiu-Yu, Zeng Wen-Hao
Chengdu Key Laboratory of Air Pollution Research, Chengdu Academy of Environmental Sciences, Chengdu 610072, China.
Sichuan Tonsin Testing Corporation, Chengdu 610046, China.
Huan Jing Ke Xue. 2020 Jul 8;41(7):3042-3055. doi: 10.13227/j.hjkx.201912203.
The volatile organic compound (VOC) emission characteristics of various production procedures were analyzed through GC-MS after the emissions of typical enterprises such as automobile manufacturing, petrochemical, and other industries had been sampled with SUMMA canisters. Each production procedure in the automobile manufacturing and petrochemical industries was considered. The results showed that each automobile manufacturing procedure had its own dominant species, and alkanes (32%) and aromatics (35%) were the main emission species of coating spraying. The emission characteristics of furniture manufacturing were highly correlated with the raw materials, and the VOC emission species were mainly composed of aromatics (50%) and oxygenated VOCs (OVOCs) (38%). As for the petrochemical industry, VOC concentrations in various process plant areas ranged from 49 μg·m to 1387 μg·m. As the main products of the refining area were C-C gasoline and benzene series, whereas comparatively more solvents were used in the chemical area, which would generate alkene products, VOC concentrations greatly differed in the various process plant areas. In terms of electronic manufacturing, OVOCs were the main emission species, accounting for more than 50% of total VOCs. Alkanes and OVOCs were the main contributors to VOC emissions in shoemaking, accounting for 52% and 36% on average, respectively, which was strongly related to the species of the used solvents. The VOC emission species of automobile manufacturing were quite different, predominantly including n-dodecane and 2-butanone. The emission species of furniture manufacturing mainly included styrene, ethyl acetate, /-xylene, etc., which are typical species of coatings and diluents. As for the differences in the emission species of process plant areas in the petrochemical industry, styrene was the main species in the refining area, 1,3-butadiene in the chemical area, C-C alkanes in the storage area, and C-C alkanes in the wastewater treatment area. The main emission species of electronic manufacturing were ethanol, acetone, and other aldehyde ketone species. The emission species of shoemaking enterprises are mainly C and C alkanes. According to the results of ozone formation potential (OFP), alkenes and aromatics were the main VOC emission species that contribute significantly to the OFP in the automobile manufacturing and petrochemical industries, with relatively high pollution source reaction activity. The results showed that the emission ratio (17%-96%) and OFP contributions of OVOCs were significant in various industries. Therefore, for VOC emission control, in addition to focusing on the control of aromatics and alkenes, attention should also be paid to OVOCs.
采用苏玛罐对汽车制造、石化等典型企业的排放进行采样后，通过气相色谱 - 质谱联用仪（GC - MS）分析了各生产工序的挥发性有机化合物（VOC）排放特征。考虑了汽车制造和石化行业的各生产工序。结果表明，汽车制造的各工序都有其主要排放物种，烷烃（32%）和芳烃（35%）是涂装喷涂的主要排放物种。家具制造的排放特征与原材料高度相关，VOC排放物种主要由芳烃（50%）和含氧挥发性有机化合物（OVOCs）（38%）组成。对于石化行业，各工艺装置区域的VOC浓度范围为49μg·m至1387μg·m。由于炼油区域的主要产品是碳 - 碳汽油和苯系物，而化工区域使用的溶剂相对较多，会产生烯烃产品，各工艺装置区域的VOC浓度差异很大。在电子制造方面，OVOCs是主要排放物种，占总VOCs的50%以上。烷烃和OVOCs是制鞋行业VOC排放的主要贡献者，平均分别占52%和36%，这与所用溶剂的种类密切相关。汽车制造的VOC排放物种差异较大，主要包括正十二烷和2 - 丁酮。家具制造的排放物种主要包括苯乙烯、乙酸乙酯、间二甲苯等，它们是涂料和稀释剂的典型物种。至于石化行业工艺装置区域排放物种的差异，炼油区域的主要物种是苯乙烯，化工区域是1,3 - 丁二烯，储存区域是碳 - 碳烷烃，废水处理区域是碳 - 碳烷烃。电子制造的主要排放物种是乙醇、丙酮和其他醛酮类物种。制鞋企业的排放物种主要是碳和碳烷烃。根据臭氧生成潜势（OFP）的结果，烯烃和芳烃是汽车制造和石化行业中对OFP有显著贡献的主要VOC排放物种，污染源反应活性相对较高。结果表明，OVOCs在各行业中的排放比例（17% - 96%）和对OFP的贡献都很显著。因此，对于VOC排放控制，除了关注芳烃和烯烃的控制外，还应关注OVOCs。
