| 摘要: |
| 利用物料衡算和源排放测试对江苏省典型汽车涂装企业VOCs排放特征进行研究，并提出最佳治理技术。结果表明，大客车单位涂装面积VOCs排放量达到300 g/m2以上，小轿车为40~60 g/m2。苯系物是VOCs排放的重要组分，最高占比为33.2%~64.6%。乙酸丁酯、异丙醇、丁醇等醇酯类物质近年来广泛用于代替苯系物溶剂，其排放占比为29.6%~61.2%。汽车涂装行业最佳治理技术包括采用3C1B、水性免中涂等先进涂装工艺，用粉末涂料、水性涂料和高固体成分涂料等代替溶剂型涂料，从源头控制排放。采用干式漆雾分离技术、转轮浓缩吸附-蓄热式焚烧技术等先进尾气治理技术，VOCs去除率可达99%以上。 |
| 关键词: 汽车涂装 挥发性有机物 排放特征 污染控制技术 江苏 |
| DOI： |
| 分类号:X831 |
| 文献标识码:B |
| 基金项目:国家环境保护公益性行业科研专项基金资助项目（20140919）；江苏省科技支撑计划基金资助项目（SBE2014070918） |
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| Emission Characteristics and Control of VOCs for Typical Automotive Coating Enterprise in Jiangsu |
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XIA Sijia，QIAO Yuezhen，MU Su, ZHAO Qiuyue1,2
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1.Jiangsu Provincial Academy of Environmental Science, Nanjing, Jiangsu 210036, China;2.Jiangsu Provincial Environmental Monitoring Center , Nanjing, Jiangsu 210036,China
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| Abstract: |
| The material balance method and source emission test were used for some typical automotive surface coating factories in Jiangsu province to study the emission characteristics of VOCs, and the best control technology was proposed. The results indicate that the VOCs emission of per unit coating area for the buses reaches more than 300 g/m2, and for the cars, between 40～60 g/m2. The benzene homologues are the important components in VOCs emission, which account for at most 33.2%~64.6%. In recent years, butyl acetate, isopropyl alcohol, butyl alcohol, etc. are widely used to replace the benzene solvents, and their highest proportion in VOCs emission is between 29.6%~61.2%. The best control technology for the automotive coating industry is to control the emission source by using the powder coatings, waterborne coatings, high solids coating and other coatings to replace the solvent coatings through the use of advanced coating technologies including 3C1B, water free coating and others. By using the advanced exhaust gas treatment technologies such as, dry paint mist separation technology, runner concentrated adsorption and regenerative combustion technology and so on, the removal rate of VOCs will reach more than 99%. |
| Key words: Automotive surface coating Volatile organic compounds (VOCs) Emission characteristics Pollution control technology Jiangsu |
