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首页> 外文期刊>Waste Management >Insights into the effect of chlorine on arsenic release during MSW incineration: An on-line analysis and kinetic study
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Insights into the effect of chlorine on arsenic release during MSW incineration: An on-line analysis and kinetic study

机译：深入了解氯对生活垃圾焚烧过程中砷释放的影响：在线分析和动力学研究

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摘要

The effect of chlorine on arsenic (As) release dynamics during municipal solid waste (MSW) incineration in a fluidized bed was studied on the basis of an on-line analysis system. This system can continuously and quantitatively measure the concentrations of trace elements in flue gas. Chlorine addition increases obviously the concentration of arsenic in flue gas, indicating a promoting effect of chlorine on arsenic release during MSW incineration. Based on the temporal concentration of arsenic in flue gas, the overall kinetic parameters of arsenic release during MSW incineration were calculated. A second-order kinetic lawr(x) = 81.6e−66.9/RT(−1.05x2 − 0.01x + 1.03) was ascertained for arsenic release during MSW incineration without chlorine addition, andr(x) = 177.3e−65.3/RT(−0.68x2 − 0.43x + 1.08) for arsenic release with chlorine addition. Thermodynamic calculations were performed to predict the partitioning behavior of arsenic during MSW incineration. The addition of chlorine can not only compete with gaseous arsenic to react with mineral, but is also able to increase the volatilization of arsenic by forming volatile arsenic chlorides, thereby affecting the release kinetics of arsenic during MSW incineration.
机译：基于在线分析系统，研究了氯对流化床中城市固体废物（MSW）焚烧过程中砷（As）释放动力学的影响。该系统可以连续和定量地测量烟气中微量元素的浓度。氯的添加明显增加了烟气中砷的浓度，表明氯对垃圾焚烧过程中砷的释放具有促进作用。根据烟气中砷的时间浓度，计算了垃圾焚烧过程中砷释放的总体动力学参数。确定了在不添加氯的情况下，MSW焚烧过程中砷释放的二阶动力学定律（x）= 81.6e-66.9 / RT（-1.05x2-0.01x + 1.03），并且r（x）= 177.3e−65.3 / RT（ -0.68x2-0.43x + 1.08），用于在添加氯的情况下释放砷。进行热力学计算，以预测生活垃圾焚烧过程中砷的分配行为。氯的添加不仅可以与气态砷竞争与矿物发生反应，而且还可以通过形成挥发性的氯化砷来增加砷的挥发，从而影响生活垃圾焚烧过程中砷的释放动力学。

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  • 来源
    《Waste Management》 |2018年第5期|327-332|共6页
  • 作者

    Fenghua Shen; Jing Liu; Yuchen Dong; Chenkai Gu;

  • 作者单位

    State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology;

    State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology;

    State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology;

    State Key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science and Technology;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Arsenic; Chlorine; Dynamic release behavior; On-line analysis; MSW incineration;

    机译：砷氯动态释放行为在线分析垃圾焚烧;

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