煤岩瓦斯固气耦合相似材料瓦斯吸附特性研究
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摘要
为研究"固-气"耦合物理相似模拟试验中模拟煤层材料的瓦斯吸附问题,根据孔隙特征及吸附特征选择活性氧化铝、硅胶、硅藻土、高岭土、3A分子筛、4A分子筛、5A分子筛作为吸附材料以及屯堡矿煤样为对比材料,采用WY-98A瓦斯吸附常数测定仪对以上材料开展瓦斯吸附量及吸附常数a,b值试验。试验结果表明,高岭土、硅藻土呈现先平缓后陡峭的等温线,不符合Langmuir单分子层吸附模型,不能作为吸附材料;活性氧化铝和硅胶与屯堡矿煤样的吸附量增量变化趋势相似并且屯堡矿煤样与其吸附量比值在0.6～2之间且比值变化趋于常数,因此吸附过程变化规律与屯堡矿煤样较为相似;且吸附常数a值较大,有作为吸附材料的可能性;3种分子筛吸附量增量变化趋势呈"W型",分别在0.9,0.6,0.4 mL/g左右波动;屯堡矿煤样与其吸附量比值变化较大且不稳定,吸附过程变化规律与屯堡矿煤样相似度较低;吸附常数a值较小,不适合作为吸附材料;各种试验材料吸附常数b值均存在较大差异且都小于屯堡矿煤样。研究结果为"固-气"耦合物理相似模拟试验中具有瓦斯吸附性材料的选择及开展"固-气"耦合物理相似模拟试验提供了一定的实验基础。
Aiming at studying the gas adsorption of simulated material of coal seam in the solid-gas coupling physical simulation test, according to the pore and adsorption characteristics, activated alumina, silica gel, diatomaceous earth, kaolin, 3 A molecular sieves, 4 A molecular sieves, 5 A molecular sieves are selected as adsorption materials and coal samples of Tunbao Mine as comparison material.The WY-98 A constant gas adsorption analyzer is used to test the amount of gas adsorption and adsorption constant a, b of the above testing materials. The results have shown that the isotherms of both kaolinite and diatomaceous soil are gentle first and then steep. They are not fitted with Langmuir formula,so they cannot be used as the adsorption materials. The change trend of adsorption increment of activated alumina and silica gel are similar with that of coal samples of Tunbao Mine. The ratio of coal sample to its adsorption capacity is between 0.6 and 2, and the ratio tends to be constant, so their change rules of adsorption process are similar with the rules of coal samples of Tunbao Mine. If their adsorption constant a is large, they might be used as the adsorption materials. The adsorption increments of three kinds of molecular sieves show the changing trend of "W", fluctuating at 0.9 m L/g,0.6 m L/g and 0.4 m L/g. The ratio of coal and adsorption amount varies largely and is unstable. The change rules of adsorption process are not very similar with the coal samples of Tunbao Mine. Their adsorption constant a is small, so it is not a suitable adsorbent. The adsorption constant b in the various testing materials is quite different and less than the values of coal samples of Tunbao Mine. The results provide a certain experimental basis for the simulation test of "solid and gas" coupling with physical similarity and the selection of gas-adsorbing materials in the test.
Aiming at studying the gas adsorption of simulated material of coal seam in the solid-gas coupling physical simulation test, according to the pore and adsorption characteristics, activated alumina, silica gel, diatomaceous earth, kaolin, 3 A molecular sieves, 4 A molecular sieves, 5 A molecular sieves are selected as adsorption materials and coal samples of Tunbao Mine as comparison material.The WY-98 A constant gas adsorption analyzer is used to test the amount of gas adsorption and adsorption constant a, b of the above testing materials. The results have shown that the isotherms of both kaolinite and diatomaceous soil are gentle first and then steep. They are not fitted with Langmuir formula,so they cannot be used as the adsorption materials. The change trend of adsorption increment of activated alumina and silica gel are similar with that of coal samples of Tunbao Mine. The ratio of coal sample to its adsorption capacity is between 0.6 and 2, and the ratio tends to be constant, so their change rules of adsorption process are similar with the rules of coal samples of Tunbao Mine. If their adsorption constant a is large, they might be used as the adsorption materials. The adsorption increments of three kinds of molecular sieves show the changing trend of "W", fluctuating at 0.9 m L/g,0.6 m L/g and 0.4 m L/g. The ratio of coal and adsorption amount varies largely and is unstable. The change rules of adsorption process are not very similar with the coal samples of Tunbao Mine. Their adsorption constant a is small, so it is not a suitable adsorbent. The adsorption constant b in the various testing materials is quite different and less than the values of coal samples of Tunbao Mine. The results provide a certain experimental basis for the simulation test of "solid and gas" coupling with physical similarity and the selection of gas-adsorbing materials in the test.
引文
[1]姜福兴,孔令海,刘春刚.特厚煤层综放采场瓦斯运移规律[J].煤炭学报,2011,36(3):407-411.JIANG Fuxing,KONG Linghai,LIU Chungang.Gas emission laws of fully-mechanized sublevel caving mining in extra-thick coal seam[J].Journal of China Coal Society,2011,36(3):407-411.
[2]刘泽功,张春华,刘健,等.低透气煤层预裂瓦斯运移数值模拟及抽采试验[J].安徽理工大学学报(自科版),2009,29(4):17-21.LIU Zegong,ZHANG Chunhua,LIU Jian,et al.Numerical simulation of gas migration in pre-splitted coal seam with low permeability and experiment of gas extraction[J].Journal of Anhui University of Science and Technology(Natural Science),2009,29(4):17-21.
[3]王汉鹏,李术才,张强勇,等.新型地质力学模型试验相似材料的研制[J].岩石力学与工程学报,2006,25(9):1842-1847.WANG Hanpeng,LI Shucai,ZHANG Qiangyong,et al.Development of a new geomechanical similar material[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(9):1842-1847.
[4]林海飞,程博,李树刚,等.煤的吸附孔结构对瓦斯放散特性影响的实验研究[J].采矿与安全工程学报,2016,33(3):557-563.LIN Haifei,CHENG Bo,LI Shugang,et al.Experimental study on the effect of adsorption pore structure on gas emission characteristics[J].Journal of Mining&Safety Engineering,2016,33(3):557-563.
[5]陈向军,刘军,王林,等.不同变质程度煤的孔径分布及其对吸附常数的影响[J].煤炭学报,2013,38(2):294-300.CHEN Xiangjun,LIU Jun,WANG Lin,et al.Influence of pore size distribution of different metamorphic grade of coal on adsorption constant[J].Journal of China Coal Society,2013,38(2):294-300.
[6]GENSTERBLUM Y,MERKEL A,BUSCH A,et al.High-pressure CH4,and CO2,sorption isotherms as a function of coal maturity and the influence of moisture[J].International Journal of Coal Geology,2013,118(3):45-57.
[7]BUSCH A,GENSTERBLUM Y,KROOSS B M,et al.Investigation of high-pressure selective adsorption/desorption behaviour of CO2,and CH4,on coals:an experimental study[J].International Journal of Coal Geology,2006,66(1/2):53-68.
[8]张占存,马丕梁.水分对不同煤种瓦斯吸附特性影响的实验研究[J].煤炭学报,2008,33(2):144-147.ZHANG Zhancun,MA Piliang.Experimental on moisture effects on the gas absorption speciality of different kinds of coal[J].Journal of China Coal Society,2008,33(2):144-147.
[9]MAJEWSKA Z,MAJEWSKI S,ZIETEK J.Swelling of coal induced by cyclic sorption/desorption of gas:experimental observations indicating changes in coal structure due to sorption of CO2 and CH4[J].International Journal of Coal Geology,2010,83(4):475-483.
[10]李树刚,赵鹏翔,林海飞,等.煤岩瓦斯“固-气”耦合物理模拟相似材料特性实验研究[J].煤炭学报,2015,40(1):80-86.LI Shugang,ZHAO Pengxiang,LIN Haifei,et al.Study on character of physical simulation similar material of coal-rock and gas solid-gas coupling[J].Journal of China Coal Society,2015,40(1):80-86.
[11]李术才,周毅,李利平,等.地下工程流-固耦合模型试验新型相似材料的研制及应用[J].岩石力学与工程学报,2012,31(6):1128-1137.LI Shucai,ZHOU Yi,LI Liping,et al.Development and application a new similar material for underground engineering fluid-solid coupling model test[J].Chinese Journal of Rock Mechanics and Engineering,2012,31(6):1128-1137.
[12]王凯,李术才,张庆松,等.流-固耦合模型试验用的新型相似材料研制及应用[J].岩土力学,2016,37(9):2521-2533.WANG Kai,LI Shucai,ZHANG Qingsong,et al.Development and application of new similar materials of surrounding rock for a fluid-solid coupling model test[J].Rock and Soil Mechanics,2016,37(9):2521-2533.
[13]李树忱,冯现大,李术才,等.新型固流耦合相似材料的研制及其应用[J].岩石力学与工程学报,2010,29(2):281-288.LI Shuchen,FENG Xianda,LI Shucai,et al.Research and development of a new similar material for solid-fluid coupling and its application[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(2):281-288.
[14]林海飞,翟雨龙,李树刚,等.基于正交设计的“固-气”耦合相似材料力学与渗透特性试验研究[J].煤炭学报,2016,41(3):672-679.LIN Haifei,ZHAI Yulong,LI Shugang,et al.Research on mechanics and permeability characteristics of similar material of solid-gas coupling based on orthogonal design[J].Journal of China Coal Society,2016,41(3):672-679.
[15]董金玉,杨继红,杨国香,等.基于正交设计的模型试验相似材料的配比试验研究[J].煤炭学报,2012,37(1):44-49.DONG Jinyu,YANG Jihong,YANG Guoxiang,et al.Research on similar material proportioning test of model test based on orthogonal design[J].Journal of China Coal Society,2012,37(1):44-49.
[16]史小萌,刘保国,肖杰.水泥和石膏胶结相似材料配比的确定方法[J].岩土力学,2015,36(5):1357-1362.SHI Xiaomeng,LIU Baoguo,XIAO Jie.A method for determining the ratio of similar materials with cement and plaster as bonding agents[J].Rock and Soil Mechanics,2015,36(5):1357-1362.
[17]王汉鹏,张庆贺,袁亮,等.含瓦斯煤相似材料研制及其突出试验应用[J].岩土力学,2015,36(6):1676-1682.WANG Hanpeng,ZHANG Qinghe,YUAN Liang,et al.Development of a similar material for methane-bearing coal and its application to outburst experiment[J].Rock and Soil Mechanics,2015,36(6):1676-1682.
[18]许江,叶桂兵,李波波,等.不同黏结剂配比条件下型煤力学及渗透特性试验研究[J].岩土力学,2015,36(1):104-110.XU Jiang,YE Guibing,LI Bobo,et al.Experimental study of mechanical and permeability characteristics of moulded coals with different binder ratios[J].Rock and Soil Mechanics,2015,36(1):104-110.
[19]张淑同,戴林超,王波,等.模拟煤与瓦斯突出的相似材料配比试验研究[J].煤炭科学技术,2015,43(6):76-80.ZHANG Shutong,DAI Linchao,WANG Bo,et al.Experiment study on mixture ratio of similar material for simulation of coal and gas outburst[J].Coal Science and Technology,2015,43(6):76-80.
[20]康向涛,黄滚,邓博知,等.模拟原煤的相似材料试验研究[J].东北大学学报(自然科学版),2015,36(1):138-142.KANG Xiangtao,HUANG Gun,DENG Bozhi,et al.Experimental study on similar material for simulating raw coal[J].Journal of Northeastern University(Natural Science),2015,36(1):138-142.
[21]张庆贺,袁亮,王汉鹏,等.煤与瓦斯突出物理模拟相似准则建立与分析[J].煤炭学报,2016,41(11):2773-2779.ZHANG Qinghe,YUAN Liang,WANG Hanpeng,et al.Establishment and analysis of similarity criteria for physical simulation of coal and gas outburst[J].Journal of China Coal Society,2016,41(11):2773-2779.
[22]王春蓉.改性硅胶吸附分离N2/CO2的研究[J].化学与黏合,2009,31(6):76-78.WANG Chunrong.Study on Modified Silica Gel for Adsorptive Separation of N2/CO2[J].Chemistry and Adhesion,2009,31(6):76-78.
[23]王东田,尹方平,杨兰.改性活性氧化铝的除氟效能及再生方法研究[J].工业水处理,2010,30(6):55-58.WANG Dongtian,YIN Fangping,YANG Lan.Research on the defluoridation capacity and regeneration of modified activated alumina[J].Industrial Water Treatment,2010,30(6):55-58.
[24]姚小利,杜旭东,刘宗健,等.5A分子筛吸附正己烷的性能及其表征[J].石油化工,2010,39(7):757-761.YAO Xiaoli,DU Xudong,LIU Zongjian,et al.Adsorption performance for hexane and characterization of 5A molecular sieve[J].Petrochemical Industry,2010,39(7):757-761.
[25]张希望,李淑芳,王晓航,等.A型分子筛/活性炭纤维复合材料的制备与吸附性能研究[J].山东科技大学学报(自然科学版),2016,35(4):74-79.ZHANG Xiwang,LI Shufang,WANG Xiaohang,et al.preparation and adsorption properties of zeolite A/activated carbon fiber composite materials[J].Journal of Shandong University of Science and Technology(Natural Science),2016,35(4):74-79.
[26]KOOHSARYAN E,ANBIA M.Nanosized and hierarchical zeolites:a short review[J].Chinese Journal of Catalysis,2016,37(4):447-467.
[27]李慧芳,徐海,赵勤,等.几种分子筛对甲醛气体吸附性能的研究[J].硅酸盐通报,2014,33(1):122-126.LI Huifang,XU Hai,ZHAO Qin,et al.Adsorption performance of formaldehyde on molecular sieve[J].Bulletin of the Chinese Ceramic Society,2014,33(1):122-126.
[28]马东民.煤层气吸附解吸机理研究[D].西安:西安科技大学,2008.
[2]刘泽功,张春华,刘健,等.低透气煤层预裂瓦斯运移数值模拟及抽采试验[J].安徽理工大学学报(自科版),2009,29(4):17-21.LIU Zegong,ZHANG Chunhua,LIU Jian,et al.Numerical simulation of gas migration in pre-splitted coal seam with low permeability and experiment of gas extraction[J].Journal of Anhui University of Science and Technology(Natural Science),2009,29(4):17-21.
[3]王汉鹏,李术才,张强勇,等.新型地质力学模型试验相似材料的研制[J].岩石力学与工程学报,2006,25(9):1842-1847.WANG Hanpeng,LI Shucai,ZHANG Qiangyong,et al.Development of a new geomechanical similar material[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(9):1842-1847.
[4]林海飞,程博,李树刚,等.煤的吸附孔结构对瓦斯放散特性影响的实验研究[J].采矿与安全工程学报,2016,33(3):557-563.LIN Haifei,CHENG Bo,LI Shugang,et al.Experimental study on the effect of adsorption pore structure on gas emission characteristics[J].Journal of Mining&Safety Engineering,2016,33(3):557-563.
[5]陈向军,刘军,王林,等.不同变质程度煤的孔径分布及其对吸附常数的影响[J].煤炭学报,2013,38(2):294-300.CHEN Xiangjun,LIU Jun,WANG Lin,et al.Influence of pore size distribution of different metamorphic grade of coal on adsorption constant[J].Journal of China Coal Society,2013,38(2):294-300.
[6]GENSTERBLUM Y,MERKEL A,BUSCH A,et al.High-pressure CH4,and CO2,sorption isotherms as a function of coal maturity and the influence of moisture[J].International Journal of Coal Geology,2013,118(3):45-57.
[7]BUSCH A,GENSTERBLUM Y,KROOSS B M,et al.Investigation of high-pressure selective adsorption/desorption behaviour of CO2,and CH4,on coals:an experimental study[J].International Journal of Coal Geology,2006,66(1/2):53-68.
[8]张占存,马丕梁.水分对不同煤种瓦斯吸附特性影响的实验研究[J].煤炭学报,2008,33(2):144-147.ZHANG Zhancun,MA Piliang.Experimental on moisture effects on the gas absorption speciality of different kinds of coal[J].Journal of China Coal Society,2008,33(2):144-147.
[9]MAJEWSKA Z,MAJEWSKI S,ZIETEK J.Swelling of coal induced by cyclic sorption/desorption of gas:experimental observations indicating changes in coal structure due to sorption of CO2 and CH4[J].International Journal of Coal Geology,2010,83(4):475-483.
[10]李树刚,赵鹏翔,林海飞,等.煤岩瓦斯“固-气”耦合物理模拟相似材料特性实验研究[J].煤炭学报,2015,40(1):80-86.LI Shugang,ZHAO Pengxiang,LIN Haifei,et al.Study on character of physical simulation similar material of coal-rock and gas solid-gas coupling[J].Journal of China Coal Society,2015,40(1):80-86.
[11]李术才,周毅,李利平,等.地下工程流-固耦合模型试验新型相似材料的研制及应用[J].岩石力学与工程学报,2012,31(6):1128-1137.LI Shucai,ZHOU Yi,LI Liping,et al.Development and application a new similar material for underground engineering fluid-solid coupling model test[J].Chinese Journal of Rock Mechanics and Engineering,2012,31(6):1128-1137.
[12]王凯,李术才,张庆松,等.流-固耦合模型试验用的新型相似材料研制及应用[J].岩土力学,2016,37(9):2521-2533.WANG Kai,LI Shucai,ZHANG Qingsong,et al.Development and application of new similar materials of surrounding rock for a fluid-solid coupling model test[J].Rock and Soil Mechanics,2016,37(9):2521-2533.
[13]李树忱,冯现大,李术才,等.新型固流耦合相似材料的研制及其应用[J].岩石力学与工程学报,2010,29(2):281-288.LI Shuchen,FENG Xianda,LI Shucai,et al.Research and development of a new similar material for solid-fluid coupling and its application[J].Chinese Journal of Rock Mechanics and Engineering,2010,29(2):281-288.
[14]林海飞,翟雨龙,李树刚,等.基于正交设计的“固-气”耦合相似材料力学与渗透特性试验研究[J].煤炭学报,2016,41(3):672-679.LIN Haifei,ZHAI Yulong,LI Shugang,et al.Research on mechanics and permeability characteristics of similar material of solid-gas coupling based on orthogonal design[J].Journal of China Coal Society,2016,41(3):672-679.
[15]董金玉,杨继红,杨国香,等.基于正交设计的模型试验相似材料的配比试验研究[J].煤炭学报,2012,37(1):44-49.DONG Jinyu,YANG Jihong,YANG Guoxiang,et al.Research on similar material proportioning test of model test based on orthogonal design[J].Journal of China Coal Society,2012,37(1):44-49.
[16]史小萌,刘保国,肖杰.水泥和石膏胶结相似材料配比的确定方法[J].岩土力学,2015,36(5):1357-1362.SHI Xiaomeng,LIU Baoguo,XIAO Jie.A method for determining the ratio of similar materials with cement and plaster as bonding agents[J].Rock and Soil Mechanics,2015,36(5):1357-1362.
[17]王汉鹏,张庆贺,袁亮,等.含瓦斯煤相似材料研制及其突出试验应用[J].岩土力学,2015,36(6):1676-1682.WANG Hanpeng,ZHANG Qinghe,YUAN Liang,et al.Development of a similar material for methane-bearing coal and its application to outburst experiment[J].Rock and Soil Mechanics,2015,36(6):1676-1682.
[18]许江,叶桂兵,李波波,等.不同黏结剂配比条件下型煤力学及渗透特性试验研究[J].岩土力学,2015,36(1):104-110.XU Jiang,YE Guibing,LI Bobo,et al.Experimental study of mechanical and permeability characteristics of moulded coals with different binder ratios[J].Rock and Soil Mechanics,2015,36(1):104-110.
[19]张淑同,戴林超,王波,等.模拟煤与瓦斯突出的相似材料配比试验研究[J].煤炭科学技术,2015,43(6):76-80.ZHANG Shutong,DAI Linchao,WANG Bo,et al.Experiment study on mixture ratio of similar material for simulation of coal and gas outburst[J].Coal Science and Technology,2015,43(6):76-80.
[20]康向涛,黄滚,邓博知,等.模拟原煤的相似材料试验研究[J].东北大学学报(自然科学版),2015,36(1):138-142.KANG Xiangtao,HUANG Gun,DENG Bozhi,et al.Experimental study on similar material for simulating raw coal[J].Journal of Northeastern University(Natural Science),2015,36(1):138-142.
[21]张庆贺,袁亮,王汉鹏,等.煤与瓦斯突出物理模拟相似准则建立与分析[J].煤炭学报,2016,41(11):2773-2779.ZHANG Qinghe,YUAN Liang,WANG Hanpeng,et al.Establishment and analysis of similarity criteria for physical simulation of coal and gas outburst[J].Journal of China Coal Society,2016,41(11):2773-2779.
[22]王春蓉.改性硅胶吸附分离N2/CO2的研究[J].化学与黏合,2009,31(6):76-78.WANG Chunrong.Study on Modified Silica Gel for Adsorptive Separation of N2/CO2[J].Chemistry and Adhesion,2009,31(6):76-78.
[23]王东田,尹方平,杨兰.改性活性氧化铝的除氟效能及再生方法研究[J].工业水处理,2010,30(6):55-58.WANG Dongtian,YIN Fangping,YANG Lan.Research on the defluoridation capacity and regeneration of modified activated alumina[J].Industrial Water Treatment,2010,30(6):55-58.
[24]姚小利,杜旭东,刘宗健,等.5A分子筛吸附正己烷的性能及其表征[J].石油化工,2010,39(7):757-761.YAO Xiaoli,DU Xudong,LIU Zongjian,et al.Adsorption performance for hexane and characterization of 5A molecular sieve[J].Petrochemical Industry,2010,39(7):757-761.
[25]张希望,李淑芳,王晓航,等.A型分子筛/活性炭纤维复合材料的制备与吸附性能研究[J].山东科技大学学报(自然科学版),2016,35(4):74-79.ZHANG Xiwang,LI Shufang,WANG Xiaohang,et al.preparation and adsorption properties of zeolite A/activated carbon fiber composite materials[J].Journal of Shandong University of Science and Technology(Natural Science),2016,35(4):74-79.
[26]KOOHSARYAN E,ANBIA M.Nanosized and hierarchical zeolites:a short review[J].Chinese Journal of Catalysis,2016,37(4):447-467.
[27]李慧芳,徐海,赵勤,等.几种分子筛对甲醛气体吸附性能的研究[J].硅酸盐通报,2014,33(1):122-126.LI Huifang,XU Hai,ZHAO Qin,et al.Adsorption performance of formaldehyde on molecular sieve[J].Bulletin of the Chinese Ceramic Society,2014,33(1):122-126.
[28]马东民.煤层气吸附解吸机理研究[D].西安:西安科技大学,2008.
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