我国重点行业氮氧化物管控现状及减排策略  

Control Status and Emission Reduction Strategies of Nitrogen Oxides in Key Industries in China

作　　者：单玉龙 彭悦[2] 楚碧武 单文坡[3] 徐光艳 陈建军[2] 余运波[1] 李俊华[2] 贺泓[1,3] SHAN Yulong;PENG Yue;CHU Biwu;SHAN Wenpo;XU Guangyan;CHEN Jianjun;YU Yunbo;LI Junhua;HE Hong(Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China;School of Environment,Tsinhua University,Beijing 100084,China;Institute of Urban Environment,Chinese Academy of Sciences,Xiamen 361021,China)

机构地区：[1]中国科学院生态环境研究中心,北京100085 [2]清华大学环境学院,北京100084 [3]中国科学院城市环境研究所,福建厦门361021

出　　处：《环境科学研究》2023年第3期431-438,共8页Research of Environmental Sciences

基　　金：O_(3)和PM_(2.5)复合污染协同防控科技攻关预研项目(No.DQGG202009)。

摘　　要：氮氧化物(NO_(x))减排对于我国细颗粒物(PM_(2.5))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NO_(x)管控现状和减排策略进行了综述与展望.研究表明,我国NO_(x)排放主要来源于工业炉窑和柴油机尾气,其中工业烟气NO_(x)排放主要来源于钢铁、建材和有色等行业;柴油机NO_(x)排放主要来源于柴油车、非道路移动机械与船舶.NO_(x)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NO_(x)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NO_(x)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NO_(x),实现PM_(2.5)与O3的协同控制.The reduction of nitrogen oxide(NO_(x))emissions is critical for the control of fine particulate matter(PM_(2.5))and ozone(O3)complex air pollution in China.Therefore,in this paper the control status and emission reduction strategies of NO_(x)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 NO_(x)emissions.The NO_(x)in industrial flue gas mainly comes from the steel,construction material and metallurgical industries,while the NO_(x)in diesel engine exhaust mainly comes from diesel vehicles,off-road machinery and marine engines.The reduction strategies for NO_(x)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 NO_(x)emission standards,strengthening intelligent monitoring and supervision,and developing new energy technologies.At the present stage,there is still room for NO_(x)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 NO_(x)emissions and achieve synergetic control of both PM_(2.5)and O3.

关 键 词：氮氧化物(NO_(x)) 工业烟气 移动源尾气 选择性催化还原 排放标准 

分 类 号：X511[环境科学与工程—环境工程]