甲烷吸附前后高煤级煤孔隙结构粒径效应

doi:10.11764/j.issn.1672-1926.2020.06.003

Abstract

Abstract:

Methane isothermal adsorption experiments were carried out on the high rank coal samples with three different particle sizes， and dynamic change of the pore structure was measured with the low temperature N₂ adsorption and the low temperature CO₂ adsorption before and after the methane adsorption. The results show that the adsorption isothermal curves of the various grain sizes coal samples present no significant differences， the adsorption rate and maximum excess adsorption capacity increase with the decreasing particle sizes. Before the methane isothermal adsorption， the $d (q d e - q a d)'$ decreases with the decreasing grain sizes， while that for the equivalent desorption rate curvatures decrease first and then increase. After the methane adsorption， the $d (q d e - q a d)'$ for DY-5 coal sample decreases， while that for the DY-6 and DY-7 coal samples feature the contrary characteristics， indicating that the methane adsorption has a significant influence on the meso- and macropore structure for the small grain size coal samples. In fact， the methane adsorption could change the pore structures in the coal at all stages. For the coal samples with larger grain size， the pore connectivity is enhanced， while that for the coal samples with smaller grain sizes， the distribution of the pores would be more concentrate after the methane adsorption.

Key words: High-rank coal, Methane isothermal adsorption, Grain sizes effect, Pore structure

CLC Number:

TE122

Teng LI, Cai-fang WU. The grain size effect on pore structure characteristics of high-rank coal before and after the methane adsorption[J].Natural Gas Geoscience, 2021, 32(1): 125-135.

Figures/Tables 14

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References 34

1	康志勤，李翔，李伟，等. 煤体结构与甲烷吸附/解吸规律相关性实验研究及启示［J］. 煤炭学报， 2018， 43（5）： 1400-1407.
	KANG Z Q， LI X， LI W， et al. Experimental investigation of methane adsorption/desorption behavior in coals with different coal-body structure and its revelation［J］. Journal of China Coal Society， 2018， 43（5）： 1400-1407.
2	降文萍，张群，崔永君. 煤吸附气体的量子化学特性及其应用［J］. 天然气地球科学， 2014， 25（3）： 1672-1926.
	JIANG W P， ZHANG Q， CUI Y J. Quantum chemistry characteristics of coal adsorbing gas and their applications［J］. Natural Gas Geoscience， 2014， 25（3）： 1672-1926.
3	程波，向真才，郭恒，等. 煤岩材料对瓦斯吸附性能的研究进展［J］. 材料导报， 2018， 32（5）： 1513-1518.
	CHENG B， XIANG Z C， GUO H， et al. A review on gas adsorption performance of coal （rock） material［J］. Materials Review， 2018， 32（5）： 1513-1518.
4	刘操，张玉贵，贾天让，等. 气源岩吸附试验的机理及吸附特征新认识［J］. 煤炭学报， 2019， 44（11）： 3441-3452.
	LIU C， ZHANG Y G， JIA T R， et al. New interpretation of adsorption test mechanism and adsorption law for gas source rock［J］.Journal of China Coal Society，2019，44（11）：3441-3452.
5	朱学申，吕玉民，王存武，等. 沁南柿庄地区高煤阶煤储层吸附性及其影响因素［J］. 煤炭技术， 2020， 39（3）： 121-124.
	ZHU X S， LV Y M， WANG C W， et al. Adosorbability of high rank coal reservoir and its influencing factors in Shizhuang area， south of Qinshui Basin［J］. Coal Technology， 2020， 39（3）： 121-124.
6	马东民，李沛，张辉，等. 长焰煤中镜煤与暗煤吸附/解吸特征对比［J］. 天然气地球科学， 2017， 28（6）： 852-862.
	MA D M， LI P， ZHANG H， et al. Comparison on characteristics of adsorption/desorption of vitrain and durain in long-flame coal［J］.Natural Gas Geoscience，2017，28（6）：852-862.
7	CAI Y， LIU D， PAN Z， et al. Pore structure and its impact on CH₄ adsorption capacity and flow capability of bituminous and subbituminous coals from Northeast China［J］.Fuel， 2013， 103： 258-268.
8	WEI Q， LI X， ZHANG J， et al. Full-size pore structure characterization of deep-buried coals and its impact on methane adsorption capacity： A case study of the Shihezi Formation coals from the Panji deep area in Huainan Coalfield， Southern North China［J］.Journal of Petroleum Science and Engineering， 2019， 173： 975-989.
9	王玲玲，王兆丰，霍肖肖，等. 高温高压下煤孔隙结构的变化对瓦斯吸附特性的影响［J］. 中国安全生产科学技术， 2018， 14（12）： 97-101.
	WANG L L， WANG Z F， HUO X X， et al. Influence of pore structure change on gas adsorption characteristics of coal under high temperature and high pressure［J］. Journal of Safety Science and Technology， 2018， 14（12）： 97-101.
10	CHEN Y， WEI L， MASTALERZ M， et al. The effect of analytical particle size on gas adsorption porosimetry of shale［J］. International Journal of Coal Geology， 2015， 138： 103-112.
11	LUTYNSKI M， GONZALEZ M A. Characteristics of carbon dioxide sorption in coal and gas shale： The effect of particle size［J］.Journal of Natural Gas Science and Engineering， 2016， 28： 558-565.
12	康毅力，陈益滨，李相臣，等. 页岩粒径对甲烷吸附性能的影响［J］. 天然气地球科学， 2017， 28（2）： 272-279.
	KANG Y L， CHEN Y B， LI X C， et al. Effect of particle size on methane sorption capacity of shales［J］. Natural Gas Geoscience， 2017， 28（2）： 272-279.
13	袁梅，王玉丽，李闯，等. 粒径—温度耦合作用下煤中瓦斯解吸规律试验研究［J］. 煤矿安全， 2019， 50（12）： 32-35.
	YUAN M， WANG Y L， LI C， et al. Experimental study on coupling effect of particle size and temperature on gas desorption in coal［J］. Safety in Coal Mines， 2019， 50（12）： 32-35.
14	陈向军，李立杨，杜云飞，等. 粒径和吸附平衡压力对无烟煤残存瓦斯含量的影响［J］. 煤矿安全， 2018， 49（9）： 1-5.
	CHEN X J， LI L Y， DU Y F， et al. Influence of coal particle size and adsorption equilibrium pressure on residual gas content of anthracite［J］. Safety in Coal Mines， 2018， 49（9）： 1-5.
15	冯艳艳，黄宏斌，杨文. 粒径分布对煤的孔隙结构及其CH₄和CO₂吸附性能的影响［J］.煤炭技术，2018，37（3）：163-165.
	FENG Y Y， HUANG H B， YANG W. Effects of particle size on coal pore structure and CH₄ and CO₂ adsorption characteristics［J］. Coal Technology， 2018， 37（3）： 163-165.
16	刘彦伟，潘保龙，张加琪，等. 不同粒度软煤与硬煤吸附性能差异性研究［J］. 煤矿安全， 2017， 48（6）： 52-56，59.
	LIU Y W， PAN B L， ZHANG J Q， et al. Study on difference of gas adsorption between soft and hard coal with different grain sizes［J］. Safety in Coal Mines， 2017， 48（6）： 52-56，59.
17	张晓东，桑树勋，秦勇，等. 不同粒度的煤样等温吸附研究［J］. 中国矿业大学学报， 2005， 34（4）： 427-432.
	ZHANG X D， SANG S X， QIN Y， et al. Isotherm adsorption of coal samples with different grain size［J］. Journal of China University of Mining & Technology，2005，34（4）： 427-432.
18	ZHANG L， AZIZ N， REN T， et al. Influence of coal particle size on coal adsorption and desorption characteristics［J］. Archives of Mining Sciences， 2014， 59（3）： 807-820.
19	LIU J， JIANG X， HUANG X， et al. Morphological characterization of super fine pulverized coal particle. Part 4. Nitrogen adsorption and small angle X-ray scattering study［J］. Energy & Fuels， 2010， 24（5）： 3072-3085.
20	MASTALERZ M， HAMPTON L， DROBNIAK A， et al. Significance of analytical particle size in low-pressure N₂ and CO₂ adsorption of coal and shale［J］. International Journal of Coal Geology， 2017， 178： 122-131.
21	HOU S， WANG X， WANG X， et al. Pore structure characterization of low volatile bituminous coals with different particle size and tectonic deformation using low pressure gas adsorption［J］.International Journal of Coal Geology，2017，183：1-13.
22	ZOU J， REZAEE R. Effect of particle size on high-pressure methane adsorption of coal［J］.Petroleum Research，2016，1（1）： 53-58.
23	CHEN Y， QIN Y， WEI C， et al. Porosity changes in progressively pulverized anthracite subsamples： Implications for the study of closed pore distribution in coals［J］. Fuel， 2018， 225： 612-622.
24	GUO H， YUAN L， CHENG Y， et al. Experimental investigation on coal pore and fracture characteristics based on fractal theory［J］. Powder Technology， 2019， 346： 341-349.
25	CLARKSON C R， BUSTIN R M. The effect of pore structure and gas pressure upon the transport properties of coal： A laboratory and modeling study. 1. Isotherms and pore volume distributions［J］. Fuel， 1999， 78（11）： 1333-1344.
26	LI T， WU C. Research on the abnormal isothermal adsorption of shale［J］. Energy & Fuels， 2015， 29（2）： 634-640.
27	LI T， WU C. Continual refined isothermal adsorption of pure illite in shale with gravimetric method［J］. Journal of Petroleum Science and Engineering， 2019， 172： 190-198.
28	张政，秦勇， WANG G X，等. 基于等温吸附实验的煤层气解吸阶段数值描述［J］. 中国科学：地球科学， 2013， 43（8）： 1352-1358.
	ZHANG Z， QIN Y， WANG G X， et al. Numerical description of coalbed methane desorption stages based on isothermal adsorption experiment［J］.Science China：Earth Sciences， 2013， 43（8）： 1352-1358.
29	LI X， KANG Y， HAGHIGHI M. Investigation of pore size distributions of coals with different structures by nuclear magnetic resonance （NMR） and mercury intrusion porosimetry （MIP）［J］. Measurement， 2018， 116： 122-128.
30	李伟. CO₂-ECBM中煤储层结构对CH₄和CO₂吸附/解吸影响的研究［D］. 太原：太原理工大学， 2018： 51-60.
	LI W. Influences of Coal Reservoir Structure on Adsorption/Desorption of CH₄ and CO₂ Associated with CO₂-ECBM［D］. Taiyuan： Taiyuan University of Technology， 2018： 51-60.
31	周动，冯增朝，王辰，等. 煤吸附甲烷结构变形的多尺度特征［J］. 煤炭学报， 2019， 44（7）： 2159-2166.
	ZHOU D， FENG Z C， WANG C， et al. Multi-scale characteristics of coal structure deformation during methane adsorption［J］.Journal of China Coal Society，2019，44（7）：2159-2166.
32	魏彬，赵宇，张玉贵. 煤岩吸附—解吸变形各向异性特征试验分析［J］. 石油地球物理勘探， 2019， 54（1）： 112-117.
	WEI B， ZHAO Y， ZHANG Y G. Experimental study on anisotropic characteristics of coal deformation caused by gas adsorption and desorption［J］.Oil Geophysical Prospecting， 2019， 54（1）： 112-117.
33	姚宇平. 吸附瓦斯对煤的变形及强度的影响［J］. 煤矿安全， 1988，（12）： 37-41.
	YAO Y P. Effect of adsorbed gas on deformation and strength of coal［J］. Safety in Coal Mines， 1988，（12）： 37-41.
34	何学秋，王恩元，林海燕. 孔隙气体对煤体变形及蚀损作用机理［J］. 中国矿业大学学报， 1996， 25（1）： 6-11.
	HE X Q， WANG E Y， LIN H Y. Coal deformation and fracture mechanism under pore gas action［J］. Journal of China University of Mining & Technology， 1996， 25（1）： 6-11.

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样品号	粒度/目	R_o,max/%	工业分析/%
样品号	粒度/目	R_o,max/%	M_ad	A_d	V_daf	FC_ad
DY-5	40~60	3.13	1.84	8.41	8.02	82.69
DY-6	60~80		1.90	8.64	8.24	82.24
DY-7	80~100		1.82	9.15	8.25	81.84

样品	吸附前后	吸附类型	D_-10	D₀	D₁	D₂	D₁₀	D_-10－D₁₀	D₀－D₁₀	D_-10－D₀
DY-5	吸附前	液氮吸附	1.52	1	0.95	0.9051	0.84	0.68	0.16	0.52
	吸附前	二氧化碳吸附	1.40	1	0.83	0.66	0.44	0.96	0.56	0.40
	吸附后	液氮吸附	1.18	1	0.98	0.96	0.90	0.27	0.10	0.18
	吸附后	二氧化碳吸附	1.22	1	0.88	0.75	0.58	0.65	0.42	0.22
DY-6	吸附前	液氮吸附	1.35	1	0.96	0.92	0.86	0.49	0.14	0.35
	吸附前	二氧化碳吸附	1.23	1	0.85	0.69	0.50	0.73	0.50	0.23
	吸附后	液氮吸附	1.08	1	0.94	0.88	0.68	0.40	0.32	0.08
	吸附后	二氧化碳吸附	1.23	1	0.87	0.73	0.52	0.70	0.48	0.23
DY-7	吸附前	液氮吸附	1.42	1	0.99	0.98	0.94	0.48	0.06	0.42
	吸附前	二氧化碳吸附	1.23	1	0.85	0.71	0.53	0.71	0.47	0.23
	吸附后	液氮吸附	1.31	1	0.96	0.92	0.84	0.48	0.16	0.31
	吸附后	二氧化碳吸附	1.23	1	0.85	0.71	0.48	0.75	0.52	0.23

The grain size effect on pore structure characteristics of high-rank coal before and after the methane adsorption

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