某钢厂炼焦区域环境空气中挥发性有机物特征与臭氧生成潜能  

Characterization and ozone formation potence of ambient VOCs in a coke making section of an iron and steel complex

作　　者：蒋轶伦 王达玮 杨晓东 JIANG Yilun;WANG Dawei;YANG Xiaodong(Shanghai Jinyi Inspection Technology Co.,Ltd.,Shanghai 201900,China)

机构地区：[1]上海金艺检测技术有限公司,上海201900

出　　处：《宝钢技术》2025年第1期57-62,共6页Baosteel Technology

摘　　要：基于2023年秋季在某钢厂炼焦区域开展的环境空气中主要挥发性有机物的连续自动监测,对炼焦区域挥发性有机物(VOCs)的优势类别、优势组分、一日间24 h质量浓度变化特征等进行分析,并结合臭氧、氮氧化物等的监测探讨了炼焦区域VOCs的臭氧生成潜能。研究表明:炼焦区域环境空气中VOCs优势类别为芳烃、烷烃和烯烃;质量浓度值和臭氧生成潜势(OFP)值筛选结果均显示优势组分为苯、甲苯、二甲苯等苯系物和乙烯;环境O_(3)质量浓度24 h变化与甲苯等O_(3)生成重要前体物质量浓度24 h变化呈相反趋势;通过非甲烷总烃(NMHC)与NO_(x)体积分数比值指标判断,该钢厂炼焦区域环境空气中O_(3)的生成主要受VOCs控制。Based on the continuous automated monitoring of major ambient VOCs in a coke making section of an iron and steel complex in 2023,the dominant VOCs types,components,and the diurnal variations of their mass concentrations were analyzed and reported.Combining the monitoring of ambient O_(3)and NO x,ozone formation potence of the VOCs was explored.Results showed that the dominant VOCs types in the coke making section were aromatic hydrocarbons,alkanes,and alkenes.While the dominant VOCs components were benzene,toluene,xylene,and ethene,specifically,considering both the mass concentration levels and the OFP values.Diurnal variations of the mass concentrations of ozone and dominant VOCs components indicated an opposite trend.Based on the indicator of the NMHC to NO_(x)volume fraction ratio,it was suggested that the ozone formation in the coke making section of this iron and steel complex was mainly controlled by the ambient VOCs.

关 键 词：炼焦区域环境空气 VOCs优势组分 质量浓度一日间变化 臭氧生成控制 钢铁联合企业 

分 类 号：X784[环境科学与工程—环境工程]