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首页> 外文期刊>Environmental Pollution >Influence of flue gas desulfurization (FGD) installations on emission characteristics of PM2.5 from coal-fired power plants equipped with selective catalytic reduction (SCR)
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Influence of flue gas desulfurization (FGD) installations on emission characteristics of PM2.5 from coal-fired power plants equipped with selective catalytic reduction (SCR)

机译：烟气脱硫（FGD）装置对配备选择性催化还原（SCR）的燃煤电厂PM2.5排放特性的影响

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摘要

Flue gas desulfurization (FGD) and selective catalytic reduction (SCR) technologies have been widely used to control the emissions of sulphur dioxide (SO2) and nitrogen oxides (NOx) from coal-fired power plants (CFPP5). Field measurements of emission characteristics of four conventional CFPPs indicated a significant increase in particulate ionic species, increasing PM2.5 emission with FGD and SCR installations. The mean concentrations of PM2.5 from all CFPP5 tested were 3.79 +/- 137 mg/m(3) and 5.02 +/- 1.73 mg/m(3) at the FGD inlet and outlet, respectively, and the corresponding contributions of ionic species were 19.1 7.7% and 38.2 7.8%, respectively. The FGD was found to enhance the conversion of NH3 slip from the SCR to NH4- in the PM2.5, together with the conversion of SO2 to SO42-, and increased the primary NH4+ and SO42- aerosol emissions by approximately 18.9 and 4.2 times, respectively. This adverse effect should be considered when updating the emission inventory of CFPP5 and should draw the attention of policy makers for future air pollution control. (C) 2017 Elsevier Ltd. All rights reserved.
机译：烟气脱硫（FGD）和选择性催化还原（SCR）技术已被广泛用于控制燃煤电厂（CFPP5）排放的二氧化硫（SO2）和氮氧化物（NOx）。四种常规CFPP排放特性的现场测量表明，颗粒离子种类显着增加，随着FGD和SCR装置的PM2.5排放增加。来自所有测试过的CFPP5的PM2.5的平均浓度分别为FGD进口和出口处的3.79 +/- 137 mg / m（3）和5.02 +/- 1.73 mg / m（3），以及离子的相应贡献种类分别为19.1 7.7％和38.2 7.8％。发现烟气脱硫促进了PM2.5中SCR NH3泄漏从SCR到NH4-的转化，以及SO2到SO42-的转化，并使主要NH4 +和SO42-气溶胶排放增加了约18.9和4.2倍，分别。在更新CFPP5的排放清单时应考虑这种不利影响，并应引起决策者对未来空气污染控制的关注。 （C）2017 Elsevier Ltd.保留所有权利。

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  • 来源
    《Environmental Pollution》 |2017年第11期|655-662|共8页
  • 作者

    Li Zhen; Jiang Jingkun; Ma Zizhen; Fajardo Oscar A.; Deng Jianguo; Duan Lei;

  • 作者单位

    Tsinghua Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing, Peoples R China;

    Tsinghua Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing, Peoples R China|Tsinghua Univ, State Environm Protect Key Lab Sources & Control, Beijing, Peoples R China;

    Tsinghua Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing, Peoples R China;

    Tsinghua Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing, Peoples R China|Cent Univ, Fac Engn & Basic Sci, Dept Environm Engn, Bogota, Colombia;

    Tsinghua Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing, Peoples R China;

    Tsinghua Univ, Sch Environm, State Key Joint Lab Environm Simulat & Pollut Con, Beijing, Peoples R China|Tsinghua Univ, Collaborat Innovat Ctr Reg Environm Qual, Beijing, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    PM2.5; Coal-fired power plant; Flue gas desulfurization (FGD); Selective catalytic reduction (SCR); Water-soluble ions; Primary ammonium aerosol emissions; Ammonia slip;

    机译：PM2.5;燃煤电厂;烟气脱硫（FGD）;选择性催化还原（SCR）;水溶性离子;一级铵气溶胶排放;氨漏失;

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