| 煤样粒径对煤吸附常数及瓦斯放散初速度的影响 |
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| 引用本文： | 李一波,郑万成,王凤双.煤样粒径对煤吸附常数及瓦斯放散初速度的影响[J].煤矿安全,2013(1):5-8. |
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| 作者姓名： | 李一波 郑万成 王凤双 |
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| 作者单位： | 云南省一九八煤田地质勘探队;四川省煤炭设计研究院;中国矿业大学煤炭资源与安全开采国家重点实验室 |
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| 基金项目： | 国家自然科学基金资助项目(51174198,50834005);煤炭资源与安全开采国家重点实验室自主课题资助项目(SKLCRSM11X01) |
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| 摘 要： | 运用Langmuir单分子层吸附理论,对煤在不同粒径条件下吸附瓦斯气体进行了实验研究。利用WY-98A型瓦斯常数测定仪及WFC-2型瓦斯放散初速度测定仪,分别对不同煤样在不同粒径条件下吸附甲烷气体的等温吸附曲线、吸附常数a、b及瓦斯放散初速度△p进行了定性与定量分析,并得出了吸附常数a及放散初速度△p随粒径变化的关系式。结果表明,吸附常数a随粒径出现阶段性的变化,瓦斯放散初速度随粒径变化呈现出对数函数的变化规律。
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| 关 键 词： | 煤样粒径 吸附常数 瓦斯放散初速度 甲烷 |
The Effect of Coal Sample Particle Size on Coal Adsorption Constants and Initial Speed of Methane Diffusing |
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| LI Yi-bo,ZHENG Wan-cheng,WANG Feng-shuang.The Effect of Coal Sample Particle Size on Coal Adsorption Constants and Initial Speed of Methane Diffusing[J].Safety in Coal Mines,2013(1):5-8. |
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| Authors: | LI Yi-bo ZHENG Wan-cheng WANG Feng-shuang |
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| Affiliation: | 1.No.198 Coalfield Geology Prospecting Team of Yunnan Province,Kunming 650208,China;2.Sichuan Coal Design and Research Institute,Chengdu 610031,China;3.State Key Laboratory of Coal Resources and Safe Mining,China University of Mining and Technology,Xuzhou 221008,China) |
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| Abstract: | Adopting the Langmuir monolayer adsorption theory,the experimental research was done for adsorbing methane under the different particle size conditions.By using the WY-98A gas constant determinator and WFC-2 initial speed determinator of methane diffusing,it made the qualitative and quantitative analysis for the curve of isothermal adsorption,adsorption constants a and b and initial speed of methane diffusing △p for different coal samples under the different particle size conditions,and obtained the relationship of adsorption constant a and initial speed of methane diffusing △p with the particle size change.The results showed that adsorption constant a would present periodic change with particle size varying,and the initial speed of methane diffusing △p took on the variation law of logarithmic function. |
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| Keywords: | coal sample particle size adsorption constants initial speed of methane diffusing methane |
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