Fenton试剂作用下煤的渗透规律及增透机理研究
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摘要
为研究Fenton试剂作用下煤的渗透规律及增透机理,对焦作煤业(集团)有限责任公司九里山煤矿的无烟煤、安阳市主焦煤业有限责任公司的焦煤、义马煤业集团股份有限公司杨村煤矿的长焰煤等3种不同煤阶的煤样,利用Fenton试剂进行加压饱和浸泡试验,研究其渗透率变化情况,并通过对比试验前后各煤样核磁共振T_2谱和红外光谱,分析探讨了Fenton试剂作用下煤样的增透机理。结果表明:Fenton试剂作用后,煤样中大孔和裂隙体积增大,内部连通性变好; Fenton试剂作用后,煤样表面含氧官能团增加,抑制了煤对瓦斯的吸附能力;通过3种煤样的对比试验发现,Fenton试剂作用对低阶煤煤样有较好的增透效果。研究结果可为提高煤层的透气性提供新的方法和理论指导。
In order to study the penetration law and the mechanism of increase permeability of the coal under the action of Fenton reagent,three coal samples of different coal ranks,including anthracite coal from Jiulishan coal mine in Jiaozuo coal group Co.,Ltd.,coking coal from Zhujiao coal mine Co.,Ltd.,in Anyang city,and long flame coal from the Yangcun coal mine in Yima coal group Co.,Ltd.,were selected,and the changes of permeability after the samples being subjected to pressure saturated soaking treatment with Fenton reagent were studied. At the same time,the comparison of T_2 spectra and infrared spectra of coal samples before and after their treated by Fenton reagent was conducted to investigate the mechanism of increase permeability. The results showed that: Fenton reagent led to increase the volume of macropores and fissures in the coal sample,and internal connectivity in the coal sample became better. The increase of oxygen-containing functional groups on the coal surface with Fenton reagent inhibited the adsorption capacity of coal on methane. Through the comparative experiments of three kinds of coal samples,it was proved that Fenton reagent had a good increase permeability effect on low-rank coal samples. The conclusions provided a new method and theoretical guidance for improving the permeability of coal seam.
In order to study the penetration law and the mechanism of increase permeability of the coal under the action of Fenton reagent,three coal samples of different coal ranks,including anthracite coal from Jiulishan coal mine in Jiaozuo coal group Co.,Ltd.,coking coal from Zhujiao coal mine Co.,Ltd.,in Anyang city,and long flame coal from the Yangcun coal mine in Yima coal group Co.,Ltd.,were selected,and the changes of permeability after the samples being subjected to pressure saturated soaking treatment with Fenton reagent were studied. At the same time,the comparison of T_2 spectra and infrared spectra of coal samples before and after their treated by Fenton reagent was conducted to investigate the mechanism of increase permeability. The results showed that: Fenton reagent led to increase the volume of macropores and fissures in the coal sample,and internal connectivity in the coal sample became better. The increase of oxygen-containing functional groups on the coal surface with Fenton reagent inhibited the adsorption capacity of coal on methane. Through the comparative experiments of three kinds of coal samples,it was proved that Fenton reagent had a good increase permeability effect on low-rank coal samples. The conclusions provided a new method and theoretical guidance for improving the permeability of coal seam.
引文
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[16]王登科,魏建平,付启超,等.基于Klinkenberg效应影响的煤体瓦斯渗流规律及其渗透率计算方法[J].煤炭学报,2014,39(10):2029-2036.WANG D K,WEI J P,FU Q C,et al. Coalbed gas seepage law and permeability calculation method based on Klinkenberg effect[J]. Journal of China Coal Society,2014,39(10):2029-2036.
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[18]GORGE COATES,肖立志,MANFRED PRAMMER.核磁共振测井原理与应用[M].北京:石油工业出版社,2007.GORGE COATES,XIAO L Z,MANFRED PRAMMER.Principle and application of nuclear magnetic resonance logging[M]. Beijing:Petroleum Industry Press,2007.
[19]张超谟,陈振标,张占松,等.基于核磁共振T2谱分布的储层岩石孔隙分形结构研究[J].石油天然气学报,2007,29(4):80-86.ZHANG C M,CHEN Z B,ZHANG Z S,et al. Fractal characteristics of reservoir rock pore structure based on NMR T2distribution[J]. Journal of Oil and Gas Technology,2007,29(4):80-86.
[20]李子文.低阶煤的微观结构特征及其对瓦斯吸附解吸的控制机理研究[D].徐州:中国矿业大学,2015.LI Z W. Study on microstructure characteristics of low rank coal and its control mechanism on gas desorption[D]. Xuzhou:China University of Mining and Technology,2015.
[21]朱红,李虎林,欧泽深,等.不同煤阶煤表面改性的FTIR谱研究[J].中国矿业大学学报,2001,30(4):366-370.ZHU H,LI H L,OU Z S,et al. Study on surface modification of different rank coals by using FTIR[J]. Journal of China University of Mining&Technology,2001,30(4):366-370.
[22]李霞,曾凡桂,王威,等.低中煤级煤结构演化的FTIR表征[J].煤炭学报,2015,40(12):2900-2908.LI X,ZENG F G,WANG W,et al. FTIR characterization of structural evolution in low-middle rank coals[J]. Journal of China Coal Society,2015,40(12):2900-2908.
[23]冯艳艳,黄利宏,储伟.表面改性对煤基活性炭及其甲烷吸附性能的影响[J].煤炭学报,2011,36(12):2080-2085.FENG Y Y,HUANG L H,CHU W. Surface modification of coal-based activated carbon and its effects on methane adsorption[J]. Journal of China Coal Society,2011,36(12):2080-2085.
[2]刘成林,朱杰,车长波,等.新一轮全国煤层气资源评价方法与结果[J].天然气工业,2009,29(11):130-132.LIU C L,ZHU J,CHE Z B,et al. Methodologies and results of the latest assessment of coalbed methane resources in China[J]. Natural Gas Industry,2009,29(11):130-132.
[3]孔令峰,栾向阳,杜敏,等.典型区块煤层气地面开发项目经济性分析及国内煤层气可持续发展政策探讨[J].天然气工业,2017,37(3):116-126.KONG L F,LUAN X Y,DU M,et al. Economic analysis of CBM ground development projects of typical exploration blocks and discussion on support policies for CBM sustainable development in China[J]. Natural Gas Industry,2017,37(3):116-126.
[4]魏建平,位乐,王登科.含水率对含瓦斯煤的渗流特性影响试验研究[J].煤炭学报,2014,39(1):97-103.WEI J P,WEI L,WANG D K. Experimental study of moisture content influences on permeability of coal containing gas[J]. Journal of China Coal Society,2014,39(1):97-103.
[5]叶建平,史保生.中国煤储层渗透性及其主要影响因素[J].煤炭学报,1999,24(2):118-122.YE J P,SHI B S. Coal reservoir permeability and its controlled factors in China[J]. Journal of China Coal Society,1999,24(2):118-122.
[6]赵文秀,李瑞,乌效鸣,等.利用酸化技术提高煤储层渗透率的室内初探[J].中国煤层气,2012(1):10-13.ZHAO W X,LI R,WU X M,et al. Preliminary study on improving the permeability of coal reservoir by acidification technology[J]. China Coalbed Methane,2012(1):10-13.
[7]李全中.多组分酸对不同煤阶煤增透机理研究[D].焦作:河南理工大学,2014.LI Q Z. Study on mechanism of augmentation by multicomponent acids on different coal ranks[D]. Jiaozuo:Henan Polytechnic University,2014.
[8]郭红玉,苏现波,陈俊辉,等.二氧化氯对煤储层的化学增透实验研究[J].煤炭学报,2013,38(4):633-636.GUO H Y,SU X B,CHEN J H,et al. Experimental study on chemical permeability improvement of coal reservoir using chlorine dioxide[J]. Journal of China Coal Society,2013,38(4):633-636.
[9]王惠风,姬明,潘晋,等.二氧化氯作用下不同煤阶煤的表面改性研究[J].煤矿安全,2014,45(3):21-23.WANG H F,JI M,PAN J,et al. Study on surface modification of different rank coal disposed by chlorine dioxide[J]. Safety in Coal Mines,2014,45(3):21-23.
[10] BURKE S,JARVIE A W P,GAINES A F. A modification of the deno oxidation process for use in the solubilization of higher ranked coals[J]. Fuel,1992,71(4):395-399.
[11] HAYASHI JUNICHIRO,AIZAWA SADAYOSHI,HARUO KUMAGAI,et al. Evaluation of macromolecular structure of a brown coal by means of oxidative degradation in aqueous phase[J]. Energy&Fuels,1999,13(1):69-76.
[12] CALEMMA V,IWANSKI P,RAUSA R,et al. Changes in coal structure accompanying the formation of regenerated humic acids during air oxidation[J]. Fuel,1994,73(5):700-707.
[13]张德莉,黄应平,罗光富,等. Fenton及Photo-Fenton反应研究进展[J].环境化学,2006,25(2):121-127.ZHANG D L,HUANG Y P,LUO G F,et al. Research progress of Fenton and Photo-Fenton reaction[J]. Environment Chemistry,2006,25(2):121-127.
[14]任喜超,温志辉,宋会磊,等. Fenton试剂对煤吸附特性改变的实验研究[J].煤炭技术,2016,35(2):173-175.REN X C,WEN Z H,SONG H L,et al. Experimental study on change of coal adsorption characteristics by using Fenton reagent[J]. Coal Technology,2016,35(2):173-175.
[15]魏建平,王政锦,戴俊. Fenton试剂氧化降解瓦斯试验研究[J].河南理工大学学报(自然科学版),2013,32(1):1-5.WEI J P,WANG Z J,DAI J. Experimental study of coal-mine gas degradation using Fenton oxidative reaction system[J]. Journal of Henan Polytechnic University(Natural Science),2013,32(1):1-5.
[16]王登科,魏建平,付启超,等.基于Klinkenberg效应影响的煤体瓦斯渗流规律及其渗透率计算方法[J].煤炭学报,2014,39(10):2029-2036.WANG D K,WEI J P,FU Q C,et al. Coalbed gas seepage law and permeability calculation method based on Klinkenberg effect[J]. Journal of China Coal Society,2014,39(10):2029-2036.
[17]魏建平,秦恒洁,王登科,等.含瓦斯煤渗透率动态演化模型[J].煤炭学报,2015,40(7):1555-1561.WEI J P,QIN H J,WANG D K,et al. Dynamic permeability model for coal containing gas[J]. Journal of China Coal Society,2015,40(7):1555-1561.
[18]GORGE COATES,肖立志,MANFRED PRAMMER.核磁共振测井原理与应用[M].北京:石油工业出版社,2007.GORGE COATES,XIAO L Z,MANFRED PRAMMER.Principle and application of nuclear magnetic resonance logging[M]. Beijing:Petroleum Industry Press,2007.
[19]张超谟,陈振标,张占松,等.基于核磁共振T2谱分布的储层岩石孔隙分形结构研究[J].石油天然气学报,2007,29(4):80-86.ZHANG C M,CHEN Z B,ZHANG Z S,et al. Fractal characteristics of reservoir rock pore structure based on NMR T2distribution[J]. Journal of Oil and Gas Technology,2007,29(4):80-86.
[20]李子文.低阶煤的微观结构特征及其对瓦斯吸附解吸的控制机理研究[D].徐州:中国矿业大学,2015.LI Z W. Study on microstructure characteristics of low rank coal and its control mechanism on gas desorption[D]. Xuzhou:China University of Mining and Technology,2015.
[21]朱红,李虎林,欧泽深,等.不同煤阶煤表面改性的FTIR谱研究[J].中国矿业大学学报,2001,30(4):366-370.ZHU H,LI H L,OU Z S,et al. Study on surface modification of different rank coals by using FTIR[J]. Journal of China University of Mining&Technology,2001,30(4):366-370.
[22]李霞,曾凡桂,王威,等.低中煤级煤结构演化的FTIR表征[J].煤炭学报,2015,40(12):2900-2908.LI X,ZENG F G,WANG W,et al. FTIR characterization of structural evolution in low-middle rank coals[J]. Journal of China Coal Society,2015,40(12):2900-2908.
[23]冯艳艳,黄利宏,储伟.表面改性对煤基活性炭及其甲烷吸附性能的影响[J].煤炭学报,2011,36(12):2080-2085.FENG Y Y,HUANG L H,CHU W. Surface modification of coal-based activated carbon and its effects on methane adsorption[J]. Journal of China Coal Society,2011,36(12):2080-2085.
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