纳米级孔隙对构造煤吸附瓦斯能力的影响

doi:10.16265/j.cnki.issn1003-3033.2018.10.022

中国安全科学学报 ›› 2018, Vol. 28 ›› Issue (10): 131-136.doi: 10.16265/j.cnki.issn1003-3033.2018.10.022

纳米级孔隙对构造煤吸附瓦斯能力的影响

闫江伟^1,2,3 副教授, 薄增钦^1,2,3, 杨亚磊^1,2,3

1 河南省瓦斯地质与瓦斯治理重点实验室－省部共建国家重点实验室培育基地,河南焦作454003
2 河南理工大学安全科学与工程学院,河南焦作 454003
3 煤炭安全生产河南省协同创新中心,河南焦作454003

收稿日期:2018-06-22 修回日期:2018-08-26 出版日期:2018-10-28 发布日期:2020-11-20
作者简介:闫江伟 (1979—),男,河南柘城人,博士,副教授,主要从事瓦斯地质、瓦斯治理等方面的教学与科研工作。E-mail:gisyjw@hpu.edu.cn。
基金资助:
教育部创新团队发展支持计划(IRT16R22);河南省科技攻关重点项目(152102210105);河南省教育厅自然科学研究计划(2010B440004)。

Influence of nanoscale pore on gas adsorption capacity of deformed coal

YAN Jiangwei^1,2,3, BO Zengqin^1,2,3, YANG Yalei^1,2,3

1 State Key Laboratory Cultivation Base for Gas Geology and Gas Control,Henan Polytechnic University,Jiaozuo Henan 454003,China
2 School of Safety Science and Engineering, Henan Polytechnic University, Jiaozuo Henan 454003, China
3 Collaborative Innovation Center of Coal Safety Production of Henan, Jiaozuo Henan 454003, China

Received:2018-06-22 Revised:2018-08-26 Online:2018-10-28 Published:2020-11-20

摘要/Abstract

摘要： 为了理清构造煤是否具有超强瓦斯吸附能力及纳米级孔隙与吸附能力的关系,通过压汞、低温液氮吸附和高压等温吸附试验,对比分析采自焦作、平顶山和永夏矿区的不同煤级的IV—V类构造煤和同层共生的原生结构煤在孔隙结构、瓦斯吸附能力方面的差异,并探究纳米级孔隙与吸附能力关系。结果表明:煤中纳米级孔隙是比表面积的主要贡献者,是煤吸附瓦斯能力的决定因素;构造煤相对于同层共生的原生结构煤,纳米级孔隙和比表面积略有增加,吸附能力增加不大,且不具有超强吸附能力;构造变形作用对纳米级孔隙变化及吸附瓦斯能力的影响远小于变质作用。

关键词: 纳米级孔隙, 构造煤, 吸附能力, 比表面积, 孔容

Abstract: In order to clarify whether tectonic coal has superior gas adsorption capacity and the relationship between nanoscale pores and adsorption capacity, mercury injection, cryogenic liquid nitrogen adsorption and high pressure isothermal adsorption experiments were carried out. Differences in pore structure and gas adsorption capacity between the Ⅳ-Ⅴ tectonic coals from different coal grades and the symbiotic primary structural coals collected from the Jiaozuo, Pingdingshan and Yongxia mining areas were compared and analyzed. The relationship between nanoscale pores and adsorption capacity was explored. Experimental results show that the nano-pores in coal are the major contributor to the specific surface area, and are the determinants of coal's ability to adsorb gas, that compared with the original structural coal symbiotic with the same layer, the nano-scale pores and specific surface area increase slightly, and the adsorption capacity increases little, and does not have super-adsorption capacity, and that the effect of structural deformation on the change of nanoscale pores is far less than that of metamorphism.

Key words: nanoscale pore, tectonic coal, adsorption capacity, specific surface area, pore volume

中图分类号:

X936

闫江伟, 薄增钦, 杨亚磊. 纳米级孔隙对构造煤吸附瓦斯能力的影响[J]. 中国安全科学学报, 2018, 28(10): 131-136.

YAN Jiangwei, BO Zengqin, YANG Yalei. Influence of nanoscale pore on gas adsorption capacity of deformed coal[J]. China Safety Science Journal, 2018, 28(10): 131-136.

参考文献

[1] 闫江伟, 张小兵, 张子敏.煤与瓦斯突出地质构造控制机理探讨[J].煤炭学报,2013,38(7): 1 174-1 178.
YAN Jiangwei, ZHANG Xiaobing, ZHANG Zimin. Research on geological control mechanism of coal-gas outburst[J].Journal of China Coal Society, 2013,38(7): 1 174-1 178.
[2] 张小兵,闫江伟. 瓦斯突出煤体形成的物理条件和过程[J]. 中国安全生产科学技术,2014,10(11): 48-53.
ZHANG Xiaobing, YAN Jiangwei. Physical conditions and process of gas outburst coal forming[J]. Journal of Safety Science and Technology 2014,10(11): 48-53.
[3] 焦堃. 煤和泥页岩纳米孔隙的成因、演化机制与定量表征[D].南京:南京大学,2015.
JIAO Kun. The characterization, genesis and evolution of nanopores in coals and shales [D]. Nanjing:Nanjing University, 2015.
[4] 张玉贵,焦银秋,雷东记,等.煤体纳米级孔隙低温氮吸附特征及分形性研究[J].河南理工大学学报:自然科学版,2016,35(2): 141-148.
ZHANG Yugui, JIAO Yinqiu, LEI Dongji, et al. Study on adsorption characteristics and fractal properties of nano-scale pores at low temperature in coal [J]. Journal of Henan Polytechnic University:Nature Science,2016,35(2): 141-148.
[5] 赵迪斐,郭英海,毛潇潇,等.基于压汞、氮气吸附与FE-SEM的无烟煤微纳米孔特征[J].煤炭学报,2017,42(6): 1 517-1 526.
ZHAO Difei,GUO Yinghai,MAO Xiaoxiao,et al.Characteristics of anthracite micro-nanoholes based on mercury intrusion, nitrogen adsorption and FE-SEM[J].Journal of China Coal Society,2017,42(6): 1 517-1 526.
[6] 侯锦秀,张玉贵,张进春.构造煤原生结构煤微孔特征的多重统计对比及其差异成因机制[J].安全与环境学报,2018,18(1): 139-146.
HOU Jinxiu,ZHANG Yugui,ZHANG Jinchun.Multi-statistical comparison of micropore characteristics of primary coal in structural coal and its differential mechanism[J].Journal of Safety and Environment,2018,18(1): 139-146.
[7] 肖知国,戚灵灵.高压注水影响阳泉3号煤孔隙特性的试验研究[J].中国安全科学学报,2015,25(4): 99-104.
XIAO Zhiguo,QI Lingling.Experimental study on Influence of high pressure water injection on pore characteristics of yangquan No.3 coal[J].China Safety Science Journal,2015,25(4): 99-104.
[8] 赵鹏翔,李树刚,张远琛,等混合煤样吸附瓦斯对孔隙比表面积影响的试验研究[J].中国安全科学学报,2016,26(10): 104-109.
ZHAO Pengxiang,LI Shugang,ZHANG Yuanchen,et al.Experimental study on the effect of adsorption coal gas on pore specific surface area[J].China Safety Science Journal,2016,26(10): 104-109.
[9] 蔡婷婷,赵东,冯增朝.基于单层吸附理论不同温度下煤层气等温吸附特性[J].煤炭科学技术,2017,45(7): 144-149.
CAI Tingting, ZHAO Dong, FENG Zengchao. Isothermal adsorption characteristics of coalbed methane under different temperatures based on monolayer adsorption theory[J]. Coal Science and Technology,2017,45(7): 144-149.
[10] 陈萍,唐修义.低温氮吸附法与煤中微孔隙特征的研究[J].煤炭学报,2001,26(5): 552-556.
CHEN Ping, TANG Xiuyi. The research on the adsorption in low temperature and micro-pore properties in coal [J].Journal of China Coal Society,2001,26(5); 552-556.
[11] 薛光武,刘鸿福,要惠芳,等.韩城地区构造煤类型与孔隙特征[J].煤炭学报,2011,36(11):1 845-1 850.
XUE Guangwu, LIU Hongfu, YAO Huifang, et al. The type of technic coals and pore characters in Hancheng [J].Journal of China Coal Society, 2011,36(11): 1 845-1 850.
[12] 霍多特B B[前苏联].煤与瓦斯突出[M].宋士钊,王佑安,译.北京:中国工业出版社,1966:27-28.
HODORT B B.Coal and gas outburst [M]. SONG Shizhao,WANG Youan, Translated. Beijing: China Industrial Press, 1966: 27-28.
[13] 侯锦秀,王宝俊,张玉贵,等. 不同煤级煤的微孔介孔演化特征及其成因[J]. 煤田地质与勘探,2017,45(5): 75-81.
HOU Jinxiu,WANG Baojun,ZHANG Yugui,et al. Evolution characteristics of micropore and mesopore of different rank coal and cause of their formation[J]. Coal Geology & Exploration,2017,45(5): 75-81.
[14] 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.

纳米级孔隙对构造煤吸附瓦斯能力的影响

Influence of nanoscale pore on gas adsorption capacity of deformed coal

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