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活性炭辅助微波活化煤矸石的“枣糕”模型

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连明磊, 李志, 霍霞, 孔德顺. 活性炭辅助微波活化煤矸石的“枣糕”模型[J]. 环境工程学报, 2013, 7(6): 2378-2382.
引用本文: 连明磊, 李志, 霍霞, 孔德顺. 活性炭辅助微波活化煤矸石的“枣糕”模型[J]. 环境工程学报, 2013, 7(6): 2378-2382.
shu
Lian Minglei, Li Zhi, Huo Xia, Kong Deshun. Jujube cake model of activated carbon assisted microwave activating coal gangue[J]. Chinese Journal of Environmental Engineering, 2013, 7(6): 2378-2382.
Citation: Lian Minglei, Li Zhi, Huo Xia, Kong Deshun. Jujube cake model of activated carbon assisted microwave activating coal gangue[J]. Chinese Journal of Environmental Engineering, 2013, 7(6): 2378-2382.
shu

活性炭辅助微波活化煤矸石的“枣糕”模型

  • 1.

    六盘水师范学院化学与化学工程系, 六盘水 553004

  • 2.

    六盘水市钟山区环保局, 六盘水 553004

  • 基金项目:

    六盘水市科技计划项目资助(52020-2011-05)

    贵州省煤炭资源清洁高效利用科研实验平台项目资助(黔科平台[2011]4003)

    贵州省教育厅特色重点实验室项目资助([2011]278)

  • 中图分类号: X784

Jujube cake model of activated carbon assisted microwave activating coal gangue

  • 1.

    Department of Chemistry and Chemical Engineering, Liupanshui Normal College, Liupanshui 553004, China

  • 2.

    Liupanshui Zhongshan District Environmental Protection Bureau, Liupanshui 553004, China

  • Fund Project:

  • 摘要: 采用活性炭辅助微波活化煤矸石,将煤矸石的活化时间由传统高温焙烧方法的2 h缩短到了24 min以内。将70目活性炭与200目煤矸粉以2.0:1的质量配比充分混合后在800 W微波功率下活化24 min,铝铁浸出率可达750℃焙烧2 h的1.71倍。将微波看做实体物质,将活化过程看做是由活性炭向煤矸粉的单向微波能量传递,引入化学反应工程学方法,"枣糕"模型计算表明,在680 W功率下,活性炭的微波附着速率常数ka=0.334 min-1,微波脱附速率常数k'a=0.050min-1,煤矸粉的微波附着速率常数kb=0.262 min-1,相关系数R=0.99997 。在528、680、800 W 3个功率水平下,"枣糕"模型的计算值均与实验值拟合良好,相关系数均高于0.999,在以上3功率下,发现极限铝铁相对浸出率a与极限温升ΔTmax近似成正比。
    Abstract: The activated carbon was used to assist in microwave-activating coal gangue, and the gangue activation time was reduced to 24 min from 2 h of the traditional high-temperature method. According to the mass ratio of 2.0:1, the 70 mesh GAC and 200 mesh coal gangue powder were activated in 800 W microwave power for 24 min after mixed, and the relative Al/Fe leaching rate was up to 1.71 compared with calcinning for 2 h at 750℃. Microwave was seen as solid material, and the activation process was of the opinion that microwave energy was transferred from activated carbon to coal gangue powder by one-way. The chemical reaction engineering methods was introduced, and the following conclusions can be drawn from the jujube cake model. When the microwave power is 680 W, the microwave adsorption rate constant of GAC is identified as ka=0.334 min-1, and the microwave desorption rate constant of GAC is identified as k'a=0.050 min-1. Also, the microwave adsorption rate constant of coal gangue powder is identified as kb=0.262 min-1, and the correlation coefficient is 0.99997. Jujube cake model fits well with the experimental dates when the power is 528, 680 and 800 W,and the correlation coefficients are higher than 0.999. The limited Al/Fe relative leaching rates are proportional to the limited temperature nearly under the above three powers.
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出版历程
  • 收稿日期:  2012-07-04
  • 刊出日期:  2013-06-11
连明磊, 李志, 霍霞, 孔德顺. 活性炭辅助微波活化煤矸石的“枣糕”模型[J]. 环境工程学报, 2013, 7(6): 2378-2382.
引用本文: 连明磊, 李志, 霍霞, 孔德顺. 活性炭辅助微波活化煤矸石的“枣糕”模型[J]. 环境工程学报, 2013, 7(6): 2378-2382.
shu
Lian Minglei, Li Zhi, Huo Xia, Kong Deshun. Jujube cake model of activated carbon assisted microwave activating coal gangue[J]. Chinese Journal of Environmental Engineering, 2013, 7(6): 2378-2382.
Citation: Lian Minglei, Li Zhi, Huo Xia, Kong Deshun. Jujube cake model of activated carbon assisted microwave activating coal gangue[J]. Chinese Journal of Environmental Engineering, 2013, 7(6): 2378-2382.
shu

活性炭辅助微波活化煤矸石的“枣糕”模型

  • 1. 六盘水师范学院化学与化学工程系, 六盘水 553004
  • 2. 六盘水市钟山区环保局, 六盘水 553004
  • 收稿日期:  2012-07-04
基金项目:

六盘水市科技计划项目资助(52020-2011-05)

贵州省煤炭资源清洁高效利用科研实验平台项目资助(黔科平台[2011]4003)

贵州省教育厅特色重点实验室项目资助([2011]278)

摘要: 采用活性炭辅助微波活化煤矸石,将煤矸石的活化时间由传统高温焙烧方法的2 h缩短到了24 min以内。将70目活性炭与200目煤矸粉以2.0:1的质量配比充分混合后在800 W微波功率下活化24 min,铝铁浸出率可达750℃焙烧2 h的1.71倍。将微波看做实体物质,将活化过程看做是由活性炭向煤矸粉的单向微波能量传递,引入化学反应工程学方法,"枣糕"模型计算表明,在680 W功率下,活性炭的微波附着速率常数ka=0.334 min-1,微波脱附速率常数k'a=0.050min-1,煤矸粉的微波附着速率常数kb=0.262 min-1,相关系数R=0.99997 。在528、680、800 W 3个功率水平下,"枣糕"模型的计算值均与实验值拟合良好,相关系数均高于0.999,在以上3功率下,发现极限铝铁相对浸出率a与极限温升ΔTmax近似成正比。

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