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Emission of volatile organic compounds (VOCs) during coal combustion at different heating rates

机译：煤燃烧过程中不同升温速率下的挥发性有机化合物（VOC）排放

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摘要

The emission of volatile organic compounds (VOCs) during coal combustion at different heating rates in a power plant boiler, a drop tube furnace and a TGA reactor was studied. TD-GC/MS and online FTIR were used to measure VOCs during coal combustion. This study shows that the combustion temperature has a distinct effect on VOC composition. Larger VOC concentrations were detected in the flue gas collected at higher furnace temperatures in a drop tube furnace. Higher furnace temperatures led to a faster heating rate and a shorter residence time for the flue gas in the furnace, resulting in increased VOC generation. In the power plant boiler study, passing the flue gas through the SCR system increased the oxidation of hydrocarbons and reduced VOC emissions by 61%. Moisture effects in the WFGD and WESP systems reduced the VOCs by 10-15%. The ESP might release a small amount of the condensed VOCs on the surface of the fly ash. Overall, the APCD systems in a power plant can reduce VOC emissions. This study used measurements obtained during coal combustion at three different heating rates to generate a complete VOC emission profile. In addition, this study demonstrates the ability of air pollution control devices to reduce VOC emissions.
机译：研究了燃煤锅炉在电厂锅炉，下降管式炉和TGA反应器中不同升温速率下挥发性有机化合物（VOC）的排放。 TD-GC / MS和在线FTIR用于测量煤燃烧过程中的挥发性有机化合物。这项研究表明，燃烧温度对VOC成分有明​​显的影响。在下降管式炉中，在较高炉温下收集的烟气中检测到较大的VOC浓度。较高的炉温导致更快的加热速率和较短的烟道气在炉中的停留时间，从而增加了VOC的产生。在发电厂锅炉研究中，使烟道气通过SCR系统可增加碳氢化合物的氧化作用，并将VOC排放降低61％。 WFGD和WESP系统中的水分影响使VOC减少了10-15％。 ESP可能会在飞灰表面释放少量冷凝的VOC。总体而言，发电厂中的APCD系统可以减少VOC排放。这项研究使用了在三种不同加热速率下的煤燃烧过程中获得的测量结果，以生成完整的VOC排放曲线。此外，这项研究证明了空气污染控制设备能够减少VOC排放。

著录项

  • 来源
    《Fuel》 |2018年第1期|554-562|共9页
  • 作者

    Cheng Jie; Zhang Yongsheng; Wang Tao; Xu Hong; Norris Pauline; Pan Wei-Ping;

  • 作者单位

    North China Elect Power Univ, Key Lab Condit Monitoring & Control Power Plant E, Minist Educ, Beijing 102206, Peoples R China;

    North China Elect Power Univ, Key Lab Condit Monitoring & Control Power Plant E, Minist Educ, Beijing 102206, Peoples R China;

    North China Elect Power Univ, Key Lab Condit Monitoring & Control Power Plant E, Minist Educ, Beijing 102206, Peoples R China;

    North China Elect Power Univ, Key Lab Condit Monitoring & Control Power Plant E, Minist Educ, Beijing 102206, Peoples R China;

    Western Kentucky Univ, Inst Combust Sci & Environm Technol, Bowling Green, KY 42101 USA;

    North China Elect Power Univ, Key Lab Condit Monitoring & Control Power Plant E, Minist Educ, Beijing 102206, Peoples R China|Western Kentucky Univ, Inst Combust Sci & Environm Technol, Bowling Green, KY 42101 USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    VOCs emission; Sorbent tube; TD-GC/MS; Online FTIR;

    机译：挥发性有机化合物排放;吸附管;TD-GC / MS;在线FTIR;

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