无烟煤对CO_2和CH_4的吸附解吸特性研究
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摘要
为研究2种变质程度不同的无烟煤样对不同吸附质的吸附解吸情况,选取白芨沟煤矿和阳煤五矿2种变质程度不同的无烟煤样对二氧化碳和甲烷气体进行吸附解吸实验,采用恒容和恒压2种实验方法,测试了在不同压力点下,2种煤样吸附二氧化碳和甲烷的吸附量,以及在连续阶梯压力点下吸附解吸的特征,分别与Langmuir模型和本课题组提出的"■"式进行拟合,Q为吸附量,t为解吸时间。实验结果表明:进行恒压吸附时,2种煤样对二氧化碳的吸附量总是大于对甲烷的吸附量;进行阶梯压力实验时,2种煤样对二氧化碳和甲烷的吸附规律与Langmuir模型的拟合效果很好,解吸规律与"■"模型的拟合情况很好;二氧化碳吸附速率大于甲烷吸附速率。
To study the adsorption and desorption of different adsorbents in two kinds of anthracite samples with different metamorphic degrees,the experiments of adsorption and desorption of carbon dioxide and methane gas using two kinds of anthracite coal samples with different preparation degrees in Baijigou Coal Mine and Yangmei Mine were conducted.Using constant volume and constant pressure test methods,the adsorption capacities of carbon dioxide and methane on two kinds of coal samples under different pressure points and the characteristics of adsorption and desorption at successive step pressure points were tested.The experimental results are fitted to the Langmuir model and the "■" model proposed by this group separately.The experimental results show that the adsorption of carbon dioxide by two kinds of coal samples is always greater than the adsorption of methane for constant pressure adsorption,and the adsorption laws of carbon dioxide and methane for two kinds of coal samples are well matched with the Langmuir model,and the analytical laws are also well matched with the "■" model;the adsorption rate of carbon dioxide is greater than that of methane.
To study the adsorption and desorption of different adsorbents in two kinds of anthracite samples with different metamorphic degrees,the experiments of adsorption and desorption of carbon dioxide and methane gas using two kinds of anthracite coal samples with different preparation degrees in Baijigou Coal Mine and Yangmei Mine were conducted.Using constant volume and constant pressure test methods,the adsorption capacities of carbon dioxide and methane on two kinds of coal samples under different pressure points and the characteristics of adsorption and desorption at successive step pressure points were tested.The experimental results are fitted to the Langmuir model and the "■" model proposed by this group separately.The experimental results show that the adsorption of carbon dioxide by two kinds of coal samples is always greater than the adsorption of methane for constant pressure adsorption,and the adsorption laws of carbon dioxide and methane for two kinds of coal samples are well matched with the Langmuir model,and the analytical laws are also well matched with the "■" model;the adsorption rate of carbon dioxide is greater than that of methane.
引文
[1]于不凡.煤和瓦斯突出机理[M].北京:煤炭工业出版社,1985.
[2]白怀东.CH4与CO2吸附解吸特征对比研究[D].西安:西安科技大学,2014.
[3]张子戌,刘高峰,张小东,等.CH4/CO2不同浓度混合气体的吸附-解吸实验[J].煤炭学报,2009,34(4):551.
[4]崔永君.煤对CH4、N2、CO2及多组分气体吸附的研究[D].北京:煤炭科学研究总院,2003.
[5]张淑同,王波,曹偈,等.型煤吸附解吸二氧化碳与甲烷的性能对比试验研究[J].矿业安全与环保,2016,43(5):5-8.
[6]王雪峰,邓存宝,邓汉忠,等.甲烷气体对煤吸附二氧化碳气体的影响研究[J].计算机与应用化学,2013,30(5):511-514.
[7]秦跃平,郝永江,刘鹏,等.煤粒瓦斯放散模型对比分析[J].煤矿安全,2015,46(4):144-147.
[8]秦跃平,史浩洋,乔珽,等.关于煤粒瓦斯解吸经验公式的探讨[J].矿业安全与环保,2015,42(1):109.
[9]张登峰,崔永君,李松庚,等.甲烷及二氧化碳在不同煤阶煤内部的吸附扩散行为[J].煤炭学报,2011,36(10):1693-1698.
[10]Charriere D,Pokryszka Z,Behra P.Effect of pressure and temperature on diffusion of CO2and CH4into coal from the Lorraine basin(France)[J].International Journal of Coal Geology,2010,81(4):373-380.
[2]白怀东.CH4与CO2吸附解吸特征对比研究[D].西安:西安科技大学,2014.
[3]张子戌,刘高峰,张小东,等.CH4/CO2不同浓度混合气体的吸附-解吸实验[J].煤炭学报,2009,34(4):551.
[4]崔永君.煤对CH4、N2、CO2及多组分气体吸附的研究[D].北京:煤炭科学研究总院,2003.
[5]张淑同,王波,曹偈,等.型煤吸附解吸二氧化碳与甲烷的性能对比试验研究[J].矿业安全与环保,2016,43(5):5-8.
[6]王雪峰,邓存宝,邓汉忠,等.甲烷气体对煤吸附二氧化碳气体的影响研究[J].计算机与应用化学,2013,30(5):511-514.
[7]秦跃平,郝永江,刘鹏,等.煤粒瓦斯放散模型对比分析[J].煤矿安全,2015,46(4):144-147.
[8]秦跃平,史浩洋,乔珽,等.关于煤粒瓦斯解吸经验公式的探讨[J].矿业安全与环保,2015,42(1):109.
[9]张登峰,崔永君,李松庚,等.甲烷及二氧化碳在不同煤阶煤内部的吸附扩散行为[J].煤炭学报,2011,36(10):1693-1698.
[10]Charriere D,Pokryszka Z,Behra P.Effect of pressure and temperature on diffusion of CO2and CH4into coal from the Lorraine basin(France)[J].International Journal of Coal Geology,2010,81(4):373-380.