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Partitioning of trace inorganic elements in a coal-fired power plant equipped with a wet Flue Gas Desulphurisation system

机译:配备湿法烟气脱硫系统的燃煤电厂中痕量无机元素的分配

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摘要

The abatement capacity of trace inorganic elements was studied in a large Pulverized Coal Combustion (PCC) power plant equipped with a wet limestone Flue Gas Desulphurisation (FGD) system. High proportions of most elements were retained as fly ash as consequence of the efficiency of the electrostatic pre-cipitator (ESP, 99.6% of fly ash) and slag (11%). The most volatile elements, such as S and F are retained by the FGD gypsum, and Cl by the filtered water; whereas the moderately volatile elements, As and B, are retained mainly by fly ash, reaching very high abatement efficiencies for these elements when considering the whole plant (>92%). Selenium and Hg are still retained by the whole system with relatively high proportions (89% and 67%); however a prominently proportion is emitted; Se (11%) and Hg (29%), attaining gaseous/PM rate at the emissions reaching 0.08 and 290, respectively. The gaseous emissions are below the limits according to the European directive 2001/80/EC for large combustion plants and the PRTR threshold values with the exception of Hg emissions and paniculate Se, As, Zn, Cu, Ni, and Cr. Remediation actions to prevent and/or reduce the gaseous and PM emissions as well as the determination of leachable potential of trace inorganic pollutants retained in FGD gypsum, especially F in view of its disposal, are of significant relevance.
机译:在配备湿石灰石烟气脱硫(FGD)系统的大型粉煤燃烧(PCC)电厂中研究了痕量无机元素的减排能力。由于静电除尘器(ESP,99.6%的粉煤灰)和矿渣(11%)的效率,大多数元素的高比例保留为粉煤灰。挥发性最高的元素(例如S和F)被FGD石膏保留,Cl被过滤后的水保留;而挥发性中等的元素As和B主要被粉煤灰保留,考虑到整个植物,这些元素的除草效率非常高(> 92%)。硒和汞仍以较高比例(89%和67%)保留在整个系统中。但是,有很大一部分被散发出去;硒(11%)和汞(29%)在排放达到0.08和290时分别达到气态/ PM率。气态排放物低于欧洲指令2001/80 / EC的大型燃烧装置的限值和PRTR阈值,汞排放物和颗粒状的Se,As,Zn,Cu,Ni和Cr除外。预防和/或减少气体和PM排放的补救措施,以及确定烟气脱硫石膏(尤其是从烟气脱硫)中保留的微量无机污染物的可浸出潜力的测定,具有重大意义。

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  • 来源
    《Fuel》 |2012年第1期|p.145-157|共13页
  • 作者单位

    Institute de Diagndstico Ambientaly Estudios del Agua (ID/EA-CSIC),Jordi Cirona 18-26, E-08034 Barcelona, Spain;

    Instituto National del Carbon (INCAR-CSIC), Francisco Pintado Fe 26, 33011 Oviedo, Spain;

    Institute de Diagndstico Ambientaly Estudios del Agua (ID/EA-CSIC),Jordi Cirona 18-26, E-08034 Barcelona, Spain;

    Institute de Diagndstico Ambientaly Estudios del Agua (ID/EA-CSIC),Jordi Cirona 18-26, E-08034 Barcelona, Spain;

    Institute de Diagndstico Ambientaly Estudios del Agua (ID/EA-CSIC),Jordi Cirona 18-26, E-08034 Barcelona, Spain;

    Escuela Superior de Ingenieros de Sevilla, Departamento de Ingenieria Quimica y Ambiental, Camino de los Descubrimientos, s. Isla de la Cartuja, 41092 Sevilla, Spain;

    Instituto National del Carbon (INCAR-CSIC), Francisco Pintado Fe 26, 33011 Oviedo, Spain;

    Instituto National del Carbon (INCAR-CSIC), Francisco Pintado Fe 26, 33011 Oviedo, Spain;

    Instituto National del Carbon (INCAR-CSIC), Francisco Pintado Fe 26, 33011 Oviedo, Spain;

    Escuela Superior de Ingenieros de Sevilla, Departamento de Ingenieria Quimica y Ambiental, Camino de los Descubrimientos, s. Isla de la Cartuja, 41092 Sevilla, Spain;

    ENDESA GENERAC16N, SA Ribera del Loira, 60, Planta 2, Sector E, 28042 Madrid, Spain;

  • 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

    trace inorganic elements; PCC; FGD; ESP; PRTR threshold;

    机译:微量无机元素;PCC;烟气脱硫;ESP;PRTR阈值;

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