| 我国重点行业氮氧化物管控现状及减排策略 |
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| 引用本文： | 单玉龙,彭悦,楚碧武,单文坡,徐光艳,陈建军,余运波,李俊华,贺泓.我国重点行业氮氧化物管控现状及减排策略[J].环境科学研究,2023,36(3):431-438. |
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| 作者姓名： | 单玉龙 彭悦 楚碧武 单文坡 徐光艳 陈建军 余运波 李俊华 贺泓 |
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| 作者单位： | 1.中国科学院生态环境研究中心，北京 100085 |
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| 基金项目： | O3和PM2.5复合污染协同防控科技攻关预研项目(No.DQGG202009) |
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| 摘 要： | 氮氧化物(NOx)减排对于我国细颗粒物(PM2.5)与臭氧(O3)复合污染的协同控制至关重要.本文对我国重点行业NOx管控现状和减排策略进行了综述与展望.研究表明，我国NOx排放主要来源于工业炉窑和柴油机尾气，其中工业烟气NOx排放主要来源于钢铁、建材和有色等行业；柴油机NOx排放主要来源于柴油车、非道路移动机械与船舶.NOx减排策略主要包括技术措施和政策措施，其中技术措施主要包括清洁燃烧，如低氮燃烧、废气再循环、清洁燃料替代等，以及后处理净化技术，如选择性催化还原技术、选择性非催化还原、臭氧氧化吸收等；政策措施主要包括提升NOx排放标准，加强排放智能监测监管，布局新能源相关技术等.研究显示：现阶段，机动车和非电行业的NOx减排仍有较大空间；未来，在“碳达峰碳中和”背景下，通过发展大气污染物和温室气体的协同控制技术，将进一步深度减排NOx，实现PM...
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| 关 键 词： | 氮氧化物(NOx) 工业烟气 移动源尾气 选择性催化还原 排放标准 |
| 收稿时间： | 2022-11-09 |
Control Status and Emission Reduction Strategies of Nitrogen Oxides in Key Industries in China |
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| Affiliation: | 1.Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China2.School of Environment, Tsinhua University, Beijing 100084, China3.Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China |
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| Abstract: | The reduction of nitrogen oxide (NOx) emissions is critical for the control of fine particulate matter (PM2.5) and ozone (O3) complex air pollution in China. Therefore, in this paper the control status and emission reduction strategies of NOx in key industries in China are reviewed and future prospects are discussed. Exhaust gases from non-electric industrial furnaces and diesel engines are major sources of NOx emissions. The NOx in industrial flue gas mainly comes from the steel, construction material and metallurgical industries, while the NOx in diesel engine exhaust mainly comes from diesel vehicles, off-road machinery and marine engines. The reduction strategies for NOx include both technical and policy measures. The technical measures include clean combustion, such as low-nitrogen combustion, exhaust gas recirculation and clean fuel substitution; and after-treatment purification, such as selective catalytic reduction and selective non-catalytic reduction, and ozone oxidation combined with absorption. Policy measures include raising NOx emission standards, strengthening intelligent monitoring and supervision, and developing new energy technologies. At the present stage, there is still room for NOx reduction from motor vehicles and non-electric industries. In future, under the background of ‘carbon peak and carbon neutrality’, developing synergetic emission reduction technologies for atmospheric pollutants and greenhouse gases will further reduce NOx emissions and achieve synergetic control of both PM2.5 and O3. |
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