研究报告

  • 陈纯,李嘉鑫,廉洁,李伟,孙永旺,张建平,刘丹,李贝,李鹏钊,毛景.河南省典型炭素企业VOCs排放特征及臭氧生成潜势分析[J].环境科学学报,2022,42(11):383-394

  • 河南省典型炭素企业VOCs排放特征及臭氧生成潜势分析
  • Analysis of VOCs emission characteristics and ozone formation potential of typical carbon enterprises in Henan Province
  • 基金项目:河南省生态环境监测中心委托研究课题(No. 豫财招标采购-2020-1557)
  • 作者
  • 单位
  • 陈纯
  • 郑州大学材料科学与工程学院国家低碳和环境材料设计国际合作中心, 郑州 450001;河南省生态环境监测中心,河南省环境监测技术重点实验室,郑州 450046
  • 李嘉鑫
  • 郑州大学材料科学与工程学院国家低碳和环境材料设计国际合作中心, 郑州 450001
  • 廉洁
  • 河南省焦作生态环境监测中心, 焦作 454003
  • 李伟
  • 河南省焦作生态环境监测中心, 焦作 454003
  • 孙永旺
  • 河南省济源生态环境监测中心, 济源 459000
  • 张建平
  • 河南省济源生态环境监测中心, 济源 459000
  • 刘丹
  • 河南省生态环境监测中心,河南省环境监测技术重点实验室,郑州 450046
  • 李贝
  • 河南省生态环境监测中心,河南省环境监测技术重点实验室,郑州 450046
  • 李鹏钊
  • 郑州大学材料科学与工程学院国家低碳和环境材料设计国际合作中心, 郑州 450001
  • 毛景
  • 郑州大学材料科学与工程学院国家低碳和环境材料设计国际合作中心, 郑州 450001
  • 摘要:挥发性有机物(VOCs)是主要的臭氧前体物之一,控制VOCs排放是打赢“蓝天保卫战”的重要组成部分.研究工业源VOCs排放特征和对O3生成贡献对制定和修订相关VOCs排放标准、有针对性控制VOCs排放具有重要意义.炭素行业是非金属制品业的重要组成部分,属于高污染行业,对该行业有组织VOCs排放的研究鲜见文献报道.本文选取河南省某典型炭素企业Y炭素厂作为研究对象,通过实地采样分析了不同工序有组织和车间内、外无组织117种VOCs排放特征,计算臭氧生成潜势(OFP)并评估了不同VOCs类别和物种对O3生成的贡献.研究表明,Y炭素厂排放因子为0.031 g·kg-1,其中焙烧工序有组织VOCs排放量最大.总有组织排放占比较大的VOCs类别有烯烃(23.56%)、烷烃(21.24%)、芳香烃(18.17%)、卤代烃(15.34%)和含氧化合物(8.95%)等,占比较大的VOCs物种有乙烯(18.2%)、乙烷(11.5%)、苯(8.66%)和 乙炔(7.15%)等.车间内无组织排放占比较大的VOCs物种则为萘和四氯化碳等.总有组织排放的VOCs中,烯烃、芳香烃和含氧化合物的OFP占比较大,分别为71.72%、11.35%、10.05%,其中乙烯、丙烯的OFP占比分别为52.91%和13.98%,是需要重点治理的O3生成前体物.
  • Abstract:As a major precursor for ozone formation, volatile organic compounds (VOCs) studies and its emission control are core contents for accomplishing the goal of “Blue Sky Protection Campaign”. Identifying VOCs emission characteristics from industrial sources as well as evaluating their contributions to O3 formation are crucial for establishing VOCs emission standards and targeted controlling their emissions. As an important part of the non-metallic products but also a highly polluted industry, VOCs emission from the carbon material industry are rarely reported and their contributions to O3 formation remains unknown. In this study, we selected a typical carbon plant in Henan Province to evaluate the organized and unorganized emissions of 117 VOCs species from different processes inside and outside the workshops. The ozone formation potential (OFP) and the contribution of different VOCs categories and species to O3 formation were calculated. We show that the VOCs emission factor from this plant is 0.031 g·kg-1, with the largest contribution from organized emission of the baking process. The VOCs categories that account for the largest portions of total organized emissions are olefins (23.56%), alkanes (21.24%), aromatic hydrocarbons (18.17%), halogenated hydrocarbons (15.34%) and oxygenated compounds (8.95%), while those of VOCs species are ethylene (18.2%), ethane (11.5%), benzene (8.66%) and acetylene (7.15%). For unorganized emissions, naphthalene and carbon tetrachloride are major species. From the OFP aspect, olefins, aromatic hydrocarbons and oxygenated compounds dominant the OFP from total organized emissions, with a proportion of 71.72%, 11.35% and 10.05%, respectively. Ethylene and propylene are major OFP contributors which account for 52.91% and 13.98%, respectively. Therefore, it is important to further control emissions of small molecule VOCs, such as ethylene and propylene, especially from baking workshop discharges in carbon material industry.

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