Dynamic analysis of elemental mercury released from thermal decomposition of coal

Guo, Shaoqing; Yang, Jianli; Liu, Zhenyu

Title: Dynamic analysis of elemental mercury released from thermal decomposition of coal

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Abstract

Mercury (Hg) is a toxic and ubiquitous trace element in coal. Monitoring its release behavior during coal processing is a challenging problem. This paper presents a method that is capable of online measurement of the dynamic release behavior of elemental Hg (Hg{sup 0}) from thermal decomposition of coal. The method couples a temperature-programmed decomposition unit with an atomic fluorescence spectrometry detector (TPD-AFS). The AFS signal can be converted to Hg content for quantitative analysis through calibration. The main advantage of the TPD-AFS system is that it can provide either real-time or accumulated data. It was confirmed that the amount of Hg{sup 0} determined by this method agreed well with that by the Ontario-Hydro method, and the results are reproducible with a high accuracy. The method can be used to characterize the release behavior of Hg in coals upon heating and may be used to identify the forms of occurrence of Hg in coals. 16 refs., 4 figs., 3 tabs.

Authors:

Guo, Shaoqing; Yang, Jianli; Liu, Zhenyu ^[1]

Chinese Academy of Sciences, Taiyuan (China). State Key Laboratory of Coal Conversion

Publication Date:: Tue Sep 15 00:00:00 EDT 2009

OSTI Identifier:: 21261673

Resource Type:: Journal Article

Journal Name:: Energy and Fuels

Additional Journal Information:: Journal Volume: 23; Journal Issue: 10; Journal ID: ISSN 0887-0624

Country of Publication:: United States

Language:: English

Subject:: 01 COAL, LIGNITE, AND PEAT; MERCURY; COAL; PYROLYSIS; ON-LINE MEASUREMENT SYSTEMS; FLUORESCENCE SPECTROSCOPY

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                    Guo, Shaoqing, Yang, Jianli, and Liu, Zhenyu. Dynamic analysis of elemental mercury released from thermal decomposition of coal.  United States: N. p., 2009. 
        Web.

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                    Guo, Shaoqing, Yang, Jianli, & Liu, Zhenyu. Dynamic analysis of elemental mercury released from thermal decomposition of coal.  United States.

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                    Guo, Shaoqing, Yang, Jianli, and Liu, Zhenyu. 2009.  
        "Dynamic analysis of elemental mercury released from thermal decomposition of coal".  United States.

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@article{osti_21261673,

  title        = {Dynamic analysis of elemental mercury released from thermal decomposition of coal},

  author       = {Guo, Shaoqing and Yang, Jianli and Liu, Zhenyu},

  abstractNote = {Mercury (Hg) is a toxic and ubiquitous trace element in coal. Monitoring its release behavior during coal processing is a challenging problem. This paper presents a method that is capable of online measurement of the dynamic release behavior of elemental Hg (Hg{sup 0}) from thermal decomposition of coal. The method couples a temperature-programmed decomposition unit with an atomic fluorescence spectrometry detector (TPD-AFS). The AFS signal can be converted to Hg content for quantitative analysis through calibration. The main advantage of the TPD-AFS system is that it can provide either real-time or accumulated data. It was confirmed that the amount of Hg{sup 0} determined by this method agreed well with that by the Ontario-Hydro method, and the results are reproducible with a high accuracy. The method can be used to characterize the release behavior of Hg in coals upon heating and may be used to identify the forms of occurrence of Hg in coals. 16 refs., 4 figs., 3 tabs.},

  doi          = {},

  url          = {https://www.osti.gov/biblio/21261673},
  journal      = {Energy and Fuels},

  issn         = {0887-0624},

  number       = 10,

  volume       = 23,

  place        = {United States},

  year         = {Tue Sep 15 00:00:00 EDT 2009},

  month        = {Tue Sep 15 00:00:00 EDT 2009}

}

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