| 脱水褐煤复吸特性及孔结构对复吸影响研究 |
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| 引用本文： | 武建军,李慧蓉,周国莉,商玉坤,蔡志丹,王伟.脱水褐煤复吸特性及孔结构对复吸影响研究[J].煤炭工程,2012,0(12):102-104. |
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| 作者姓名： | 武建军 李慧蓉 周国莉 商玉坤 蔡志丹 王伟 |
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| 作者单位： | 中国矿业大学化工学院,江苏徐州,221116 |
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| 基金项目： | 国家自然科学基金资助项目，国家重点基础研究发展计划项目 |
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| 摘 要： | 对蒙东白音华褐煤进行不同温度热空气干燥后，考察了不同温度脱水褐煤的复吸情况，利用低温氮吸附法测定脱水褐煤的孔结构性质变化对脱水褐煤复吸的影响，并对复吸曲线进行NFLS拟合。结果表明：随着脱水温度的升高，相同复吸条件下脱水褐煤平衡复吸水分增量增加；孔容和比表面积增大，脱水褐煤复吸能力增强；复吸曲线拟合符合ExpAssoc模型。
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| 关 键 词： | 脱水褐煤 复吸 孔结构 ExpAssoc模型 |
Study on Re-adsorption Features and Porous Structure of Dewatered Lignite Affected to Re-adsorption |
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| WU Jian-jun
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LI Hui-rong
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ZHOU Guo-li
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SHANG Yu-kun
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CAI Zhi-dan
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WANG Wei.Study on Re-adsorption Features and Porous Structure of Dewatered Lignite Affected to Re-adsorption[J].Coal Engineering,2012,0(12):102-104. |
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| Authors: | WU Jian-jun LI Hui-rong ZHOU Guo-li SHANG Yu-kun CAI Zhi-dan WANG Wei |
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| Affiliation: | (School of Chemical Engineering and Technology,China University of Mining and Technology,Xuzhou 221116,China) |
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| Abstract: | In this paper East of Inner-Mongolia lignite was dehydrated in different temperature hot air and the moisture regain law of dehydrated lignite was researched. Nitrogen(77K) adsorption isotherm was applied to analyze pore structure and effect on regain law and moisture regain curves were fitted by Nonlinear Least Squares Fitter. The experiment results showed that equilibrium moisture increment and pore volume and specific surface area of dehydrated lignite increased with rise of dehydration temperature in the same regaining condition. The moisture regain curve fitted ExpAssoc model better. |
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| Keywords: | dehydrated lignite moisture regain pore structure ExpAssoc model |
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