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赵文鑫, 刘瑞卿, 张建利, 王钧伟. 煤矸石热处理过程中汞的释放行为[J]. 环境化学, 2019, 38(4): 842-849. doi: 10.7524/j.issn.0254-6108.2018112904
引用本文: 赵文鑫, 刘瑞卿, 张建利, 王钧伟. 煤矸石热处理过程中汞的释放行为[J]. 环境化学, 2019, 38(4): 842-849. doi: 10.7524/j.issn.0254-6108.2018112904
shu
ZHAO Wenxin, LIU Ruiqing, ZHANG Jianli, WANG Junwei. Release behaviors of mercury during thermal treatment of three coal gangues[J]. Environmental Chemistry, 2019, 38(4): 842-849. doi: 10.7524/j.issn.0254-6108.2018112904
Citation: ZHAO Wenxin, LIU Ruiqing, ZHANG Jianli, WANG Junwei. Release behaviors of mercury during thermal treatment of three coal gangues[J]. Environmental Chemistry, 2019, 38(4): 842-849. doi: 10.7524/j.issn.0254-6108.2018112904
shu

煤矸石热处理过程中汞的释放行为

  • 1.

    山西大学环境与资源学院, 太原, 030006;

  • 2.

    省部共建煤炭高效利用与绿色化工国家重点实验室, 宁夏大学, 银川, 750021;

  • 3.

    安庆师范大学化学化工学院, 安庆, 246011

  • 基金项目:

    省部共建煤炭高效利用与绿色化工国家重点实验室开放课题（2018-K16）和安徽省自然科学基金（1708085MB49）资助.

Release behaviors of mercury during thermal treatment of three coal gangues

  • 1.

    College of Environmental Science and Resources, Shanxi University, Taiyuan, 030006, China;

  • 2.

    State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan, 750021, China;

  • 3.

    College of Chemistry and Chemical Engineering, Anqing Normal University, Anqing, 246011, China

  • Fund Project: Supported by Foundation of State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering (2018-K16) and Anhui Provincial Natural Science (1708085MB49).

  • 摘要: 选取山西省的3种典型煤矸石，利用固定床反应装置研究了该3种煤矸石中汞的释放行为.考察了温度（150-1000℃）、气氛（N2、3%O2、CO2）、氧气体积分数（3%、9%、15%、21%）对煤矸石中汞释放行为的影响.结果表明，温度是影响煤矸石中汞释放的主要因素，汞的主要释放温区为200-600℃，600℃时汞在不同热工况条件下的释放率均约为92%；汞在释放温区内呈现两个主要的释放强度峰，分别位于200-400℃，400-600℃区间，且3种煤矸石中汞均在中温区（400-600℃）呈现的峰于500℃附近达到最强释放；微氧气氛促进了汞的释放；二氧化碳气氛抑制了低温区（200-400℃）汞的释放，促进了中温区（400-600℃）汞的释放；随着氧气体积分数的增大，汞与挥发份的释放能力依次增强.
    Abstract: Release behaviors of mercury during thermal treatment of three coal gangues sampled in Shanxi were studied at 150-1000℃ in a quartz tube fixed-bed reactor. Effect of temperature (150-1000℃), atmosphere (N2, 3%O2+N2, CO2), oxygen volume fraction (3%, 9%, 15%, 21%) on the release of mercury were investigated. The result indicated that temperature was the most significant factor of Hg release in coal gangues. The temperature scope of Hg releases was 200-600℃ and the release ratios of Hg were about 92% under different conditions. There are two releasing peaks during the whole temperature range of Hg release at the temperature range of 200-400℃ and 400-600℃, respectively. And the maximum release of Hg in the middle temperature releasing range occurd at 500℃ for the three coal gangues. The results also illustrated that micro oxygen atmosphere promoted the release of Hg while the dioxide restrains the release of Hg in the low temperature range (200-400℃) and improved the release during the middle temperature range (400-600℃). The ability of Hg and volatility releasing rised as the oxygen volume fraction increasing in turn.
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  • 收稿日期:  2018-11-29
  • 刊出日期:  2019-04-15
赵文鑫, 刘瑞卿, 张建利, 王钧伟. 煤矸石热处理过程中汞的释放行为[J]. 环境化学, 2019, 38(4): 842-849. doi: 10.7524/j.issn.0254-6108.2018112904
引用本文: 赵文鑫, 刘瑞卿, 张建利, 王钧伟. 煤矸石热处理过程中汞的释放行为[J]. 环境化学, 2019, 38(4): 842-849. doi: 10.7524/j.issn.0254-6108.2018112904
shu
ZHAO Wenxin, LIU Ruiqing, ZHANG Jianli, WANG Junwei. Release behaviors of mercury during thermal treatment of three coal gangues[J]. Environmental Chemistry, 2019, 38(4): 842-849. doi: 10.7524/j.issn.0254-6108.2018112904
Citation: ZHAO Wenxin, LIU Ruiqing, ZHANG Jianli, WANG Junwei. Release behaviors of mercury during thermal treatment of three coal gangues[J]. Environmental Chemistry, 2019, 38(4): 842-849. doi: 10.7524/j.issn.0254-6108.2018112904
shu

煤矸石热处理过程中汞的释放行为

  • 1.  山西大学环境与资源学院, 太原, 030006;
  • 2.  省部共建煤炭高效利用与绿色化工国家重点实验室, 宁夏大学, 银川, 750021;
  • 3.  安庆师范大学化学化工学院, 安庆, 246011
  • 收稿日期:  2018-11-29
基金项目:

省部共建煤炭高效利用与绿色化工国家重点实验室开放课题（2018-K16）和安徽省自然科学基金（1708085MB49）资助.

摘要: 选取山西省的3种典型煤矸石，利用固定床反应装置研究了该3种煤矸石中汞的释放行为.考察了温度（150-1000℃）、气氛（N2、3%O2、CO2）、氧气体积分数（3%、9%、15%、21%）对煤矸石中汞释放行为的影响.结果表明，温度是影响煤矸石中汞释放的主要因素，汞的主要释放温区为200-600℃，600℃时汞在不同热工况条件下的释放率均约为92%；汞在释放温区内呈现两个主要的释放强度峰，分别位于200-400℃，400-600℃区间，且3种煤矸石中汞均在中温区（400-600℃）呈现的峰于500℃附近达到最强释放；微氧气氛促进了汞的释放；二氧化碳气氛抑制了低温区（200-400℃）汞的释放，促进了中温区（400-600℃）汞的释放；随着氧气体积分数的增大，汞与挥发份的释放能力依次增强.

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