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首页> 外文期刊>Journal of Cleaner Production >Distribution and emission of speciated volatile organic compounds from a coal-fired power plant with ultra-low emission technologies
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Distribution and emission of speciated volatile organic compounds from a coal-fired power plant with ultra-low emission technologies

机译：用超低发射技术从燃煤发电厂推出和排放燃煤发电厂的分布和排放

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摘要

To reduce the volatile organic compounds (VOCs) emission and to achieve an ultra-low emission in coal-fired power plant, it is essential to understand the effect of air pollution control device system (APCD) on the emission of VOCs. In this study, the mass concentration of speciated VOCs in the flue gas on the nine sampling locations from the coal-fired power plant was obtained at different boiler loads. The samples were collected by the portable gas chromatograph equipped with a flame ionization detector sampling system and a sorbent trap sampling system. The results showed that the collaborative removal efficiency of VOCs could reach over 80% using the APCD system with ultra-low emission technologies. Boiler load would affect not only the concentration and distribution of VOCs but also the removal efficiency of the APCD system. The major products for 100% and 50% loads were aromatic and halogenated organic compounds, respectively. Besides, higher load also received more VOCs reduction benefits. The reduction of aromatics and alkane/alkene compounds could reach 93% and 94%, respectively. However, the reduction of polycyclic aromatic hydrocarbons in fly ash was 57%, and the reduction of halogenated organic compounds and oxygen-containing VOCs could only reach less than 45%. The major mechanisms for the removal of VOCs are oxidation and condensation through a selective catalytic reduction system (SCR) and the air preheater system. The types and reaction conditions of catalysts in the SCR system play an important role in promoting the removal of organic pollutants. The information generated from this study can help the power plant to select the correct control technologies for the VOCs emission. (C) 2020 Elsevier Ltd. All rights reserved.
机译：为了减少挥发性有机化合物（VOCS）排放并在燃煤发电厂实现超低发射，必须了解空气污染控制装置系统（APCD）对VOC的发射的影响。在该研究中，在不同的锅炉负荷下获得燃烧发电厂的九个采样位置上的烟道气中所指标VOC的质量浓度。通过配备有火焰电离检测器采样系统和吸附剂陷阱采样系统的便携式气相色谱仪收集样品。结果表明，使用具有超低发射技术的APCD系统可以达到80％以上的转储效率。锅炉负荷不仅会影响VOC的浓度和分布，还会影响APCD系统的去除效率。 100％和50％负载的主要产品分别是芳族和卤化有机化合物。此外，较高的负荷还获得了更多的VOCS减少益处。芳烃和烷烃/烯烃化合物的还原可分别达到93％和94％。然而，粉煤灰中的多环芳烃的还原为57％，卤化有机化合物和含氧VOC的还原只能达到45％。除去VOC的主要机制是通过选择性催化还原系统（SCR）和空气预热器系统的氧化和缩合。 SCR系统中催化剂的类型和反应条件在促进有机污染物的去除方面发挥着重要作用。本研究生成的信息可以帮助电厂为VOCS发射选择正确的控制技术。 （c）2020 elestvier有限公司保留所有权利。

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  • 来源
    《Journal of Cleaner Production》 |2020年第10期|121686.1-121686.9|共9页
  • 作者

    Liu Jun; Wang Jiawei; Cheng Jie; Zhang Yongsheng; Wang Tao; Pan Wei-Ping;

  • 作者单位

    North China Electric Power Univ Key Lab Power Stn Energy Transfer Convers & Syst Minist Educ Beijing 102206 Peoples R China;

    North China Electric Power Univ Key Lab Power Stn Energy Transfer Convers & Syst Minist Educ Beijing 102206 Peoples R China;

    North China Electric Power Univ Key Lab Power Stn Energy Transfer Convers & Syst Minist Educ Beijing 102206 Peoples R China;

    North China Electric Power Univ Key Lab Power Stn Energy Transfer Convers & Syst Minist Educ Beijing 102206 Peoples R China;

    North China Electric Power Univ Key Lab Power Stn Energy Transfer Convers & Syst Minist Educ Beijing 102206 Peoples R China;

    North China Electric Power Univ Key Lab Power Stn Energy Transfer Convers & Syst Minist Educ Beijing 102206 Peoples R China;

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  • 正文语种 eng
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  • 关键词

    Volatile organic compounds; Coal-fired power plant; Ultra-low emission technologies; Polyaromatic hydrocarbons;

    机译：挥发性有机化合物;燃煤发电厂;超低发射技术;多芳烃;

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