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| Citation: |
HU Jian, LIU Maoxia, WANG Hang, et al. Effect of particle size on adsorption and desorption of carbon monoxide by coal[J]. Safety in Coal Mines, 2024, 55（1）: 107−115. DOI: 10.13347/j.cnki.mkaq.20222153
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CO gas is often used as an effective indicator gas for the prediction and early warning of coal spontaneous combustion, but the causes for the rapid decrease or even disappearance of CO after the closing of spontaneous combustion in goaf are not clear, which affects the accurate determination of the coal spontaneous combustion degree. In order to study the adsorption/desorption characteristics of CO gas in coal, the pore structure of coal samples was determined by pressured-mercury testing and liquid N2 adsorption experiment. The effects of coal samples with different particle sizes on CO gas adsorption/desorption characteristics were investigated at 303.15-333.15 K and 0.15-0.50 MPa by using a self-developed gas adsorption/desorption device, and the adsorption rate and desorption hysteresis effect of CO gas were analyzed in depth. The results showed that the pore volume of non-cohesive coal sample from Lingxin Mine was mainly large pores and transition pores, accounting for 33.02% and 38.26%, respectively. The pore specific surface area was mainly micropores and transition pores, accounting for 97.73%. With the diminishment of particle size, the proportion of micropore volume increased, and the proportion of transition pore and mesopore decreased. The adsorption amount of CO gas on coal samples with varing particle sizes increased with the rising of pressure. When the pressure was constant, the adsorption amount of CO gas decreased with the rising of temperature. Under the identical temperature and pressure conditions, the smaller the sample particle size was, the larger the CO gas adsorption amount was; at the same temperature, the saturated adsorption capacity of coal for CO was positively correlated with particle size. In the process of CO desorption, the saturated adsorption capacity increased with decreasing particle size. The CO adsorption rate of coal samples could be divided into three stages: rapid rising period (0-750 s), slow rising period (750-2 250 s), and saturated equilibrium period (2 250-3 600 s). The CO gas desorption hysteresis with varing sample particle sizes decreased with the rising of temperature. At the identical temperature, the smaller the sample particle size was, the smaller the desorption hysteresis of CO gas was, and the easier it was to reach the equilibrium state of adsorption/desorption.
| [1] |
任万兴,郭庆,石晶泰,等. 基于标志气体统计学特征的煤自燃预警指标构建[J]. 煤炭学报,2021,46(6):1747−1758.
REN Wanxing, GUO Qing, SHI Jingtai. et al. Construction of early warning indicators for coal spontaneous combustion based on statistical characteristics of index gases[J]. Journal of China Coal Society, 2021, 46(6): 1747−1758.
|
| [2] |
文虎,唐瑞,张铎,等. CO在烟煤中吸附与扩散的分子模拟研究[J]. 中国安全生产科学技术,2022,18(7):95−101.
WEN Hu, TANG Rui, ZHANG Duo. et al. Molecular simulation study on adsorption and diffusion of CO in bituminous coal[J]. Journal of Science and Technology, 2022, 18(7): 95−101.
|
| [3] |
孙泽源,张小东,张硕,等. 煤演化过程中THF可溶低分子化合物组成及化学结构变化机制[J]. 煤炭学报,2021,46(12):3962−3973.
SUN Zeyuan, ZHANG Xiaodong, ZHANG Shuo, et al. Dissolution of low molecular weight compounds and change mechanism of macromolecular structure during coal evolution[J]. Journal of China Coal Society, 2021, 46(12): 3962−3973.
|
| [4] |
MA Zhanyuan, DU Feng. Evolution law of gas discharge of carbon monoxide in mining extra-thick coal seam of Datong Mining Area [J]. Geofluids, 2021.
|
| [5] |
DUDZIŃSK A, CYGANKIEWICZ J, WODAREK M. Natural content of gases: Carbon monoxide, carbon dioxide, hydrogen and unsaturated hydrocarbons of ethylene, propylene and acetylene in selected bituminous coal seams[J]. International Journal of Coal Geology, 2017, 178: 110−121. doi: 10.1016/j.coal.2017.05.005
|
| [6] |
郭立稳,王月红,张九零,等. 低阶烟煤对CO的吸附特性及影响因素[J]. 中国矿业大学学报,2008,37(6):763−768.
GUO Liwen, WANG Yuehong, ZHANG Jiuling, et al. CO Adsorptive characters and influence factors of low rank soft coals[J]. Journal of China University of Mining & Technology, 2008, 37(6): 763−768.
|
| [7] |
肖藏岩,韦重韬,郭立稳. 中低煤阶煤对CO的吸附/解吸特性[J]. 煤炭科学技术,2016,44(11):98−102.
XIAO Cangyan, WEI Chongtao, GUO Liwen. Carbon monoxide adsorption and desorption features of medium and low rank coal[J]. Coal Science and Technology, 2016, 44(11): 98−102.
|
| [8] |
FAN L, LIU S. Numerical prediction of in situ horizontal stress evolution in coalbed methane reservoirs by considering both poroelastic and sorption induced strain effects[J]. International Journal of Rock Mechanics & Mining Sciences, 2018, 104: 156−164.
|
| [9] |
徐龙君,张代钧,鲜学福. 煤的吸附特征及其应用[J]. 煤炭转化,1997(2):25−31.
XU Longjun, ZHANG Daijun, XIAN Xuefu. Adsorption characteristics of coal and its application[J]. Coal Conversion, 1997(2): 25−31.
|
| [10] |
GUO J, KANG T, KANG J, et al. Effect of the lump size on methane desorption from anthracite[J]. Journal of Natural Gas Science & Engineering, 2014, 20: 337−346.
|
| [11] |
戚宇霄. 新景矿3#煤层地质构造作用对煤孔隙结构特征及瓦斯吸附—解吸特性影响[D]. 徐州: 中国矿业大学, 2018.
|
| [12] |
CHENG Y, PAN Z. Reservoir properties of Chinese tectonic coal: a review[J]. Fuel, 2020, 260: 116350. doi: 10.1016/j.fuel.2019.116350
|
| [13] |
王翠霞,任棒,李成柱. 不同变质程度煤体孔隙结构非均质性表征[J]. 煤矿安全,2021,52(6):40−46.
WANG Cuixia, REN Bang, LI Chengzhu. Heterogeneity characterization of coal pore structure with different metamorphic degrees[J]. Safety in Coal Mines, 2021, 52(6): 40−46.
|
| [14] |
ZHAO Wei, WANG Kai, WANG Liang, et al. Influence of matrix size and pore damage path on the size dependence gas adsorption capacity of coal[J]. Fuel, 2021, 283: 1−11.
|
| [15] |
岳克明. 常温常压下煤对CO吸附及解吸特性研究[D]. 徐州: 中国矿业大学, 2014.
|
| [16] |
张遵国. 煤吸附/解吸变形特征及其影响因素研究[D]. 重庆: 重庆大学, 2015.
|
| [17] |
朱令起,桑明明,杜嘉奇,等. 基于吸附势理论的煤吸附CO超临界模型构建[J]. 煤矿安全,2022,53(9):25−30.
ZHU Lingqi, SANG Mingming, DU Jiaqi, et al. Construction of supercritical model for coal adsorbing CO based on adsorption potential theory[J]. Safety in Coal Mines, 2022, 53(9): 25−30.
|
| [18] |
黄若彤. 平煤十矿煤孔隙结构对吸附解吸特性影响[D]. 徐州: 中国矿业大学, 2020.
|
| [19] |
田伟兵,李爱芬,韩文成. 水分对煤层气吸附解吸的影响[J]. 煤炭学报,2017,42(12):3196−3202.
TIAN Weibing, LI Aifen, HAN Wencheng. Effect of water content on adsorption/ desorption of coalbed methane[J]. Journal of China Coal Society, 2017, 42(12): 3196−3202.
|
| [20] |
ZHANG Shasha, LIU Huan, JIN Zhehui, et al. Multifractal analysis of pore structure in middle- and high-rank coal by mercury intrusion porosimetry and low-pressure N2 adsorption[J]. Natural Resources Research, 2021, 30(6): 4565−4584. doi: 10.1007/s11053-021-09952-z
|
| [21] |
蒋仲安,王龙飞,张晋京,等. 煤层注水对原煤孔隙及甲烷吸脱附性能的影响[J]. 煤炭学报,2018,43(10):2780−2788.
JIANG Zhongan, WANG Longfei, ZHANG Jinjing, et al. Influence of coal water injection on pore and methane adsorption / desorption properties of raw coal[J]. Journal of China Coal Society, 2018, 43(10): 2780−2788.
|
| [22] |
LOI Q K, PRASETYO L, TAN J S, et al. Wedge pore modelling of gas adsorption in activated carbon: Consistent pore size distributions[J]. Carbon, 2020, 166: 414−426. doi: 10.1016/j.carbon.2020.05.035
|
| [23] |
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):1517−1526.
ZHAO Difei, GUO Yinghai, MAO Xiaoxiao, et al. Characteristics of macro-nanopores in anthracite coal based on mercury injection, nitrogen adsorption and FE-SEM[J]. Journal of China Coal Society, 2017, 42(6): 1517−1526.
|
| [24] |
唐明云,张海路,段三壮,等. 基于Langmuir模型温度对煤吸附解吸甲烷影响研究[J]. 煤炭科学技术,2021,49(5):182−189.
TANG Mingyun, ZHANG Hailu, DUAN Sanzhuang, et al. Study on effect of temperature on methane adsorption and desorption in coal based on Langmuir model[J]. Coal Science and Technology, 2021, 49(5): 182−189.
|
| [25] |
武腾飞,都喜东,李琪琦. 煤与泥页岩孔隙结构和吸附特性的对比分析[J]. 煤矿安全,2020,51(11):169−174.
WU Tengfei, DU Xidong, LI Qiqi. Comparative analysis of pore structure and adsorption characteristics of coal and shale[J]. Safety in Coal Mines, 2020, 51(11): 169−174.
|
| [26] |
董银涛,鞠斌山,刘楠楠. 页岩甲烷高压等温吸附模型评价与改进[J]. 煤炭学报,2020,45(9):3208−3218.
DONG Yintao, JU Binshan, LIU Nannan. Evaluation and improvement of high-pressure isothermal adsorption model for methane in shale[J]. Journal of China Coal Society, 2020, 45(9): 3208−3218.
|
| [27] |
江兆龙,周禹军,刘伟,等. 煤对CO2,N2和CH4的吸附速率经验公式与异同性研究[J]. 中国安全生产科学技术,2020,16(9):83−88.
JIANG Zhaolong, ZHOU Yujun, LIU Wei, et al. Study on empirical formula and heterogeneity for adsorption rate of CO2, N2 and CH4 by coal[J]. Journal of Safety Science and Technology, 2020, 16(9): 83−88.
|
| [28] |
ZHANG Junjian, WEI Chongtao, ZHAO Chengjin, et al. Effects of nano-pore and macromolecule structure of coal samples on energy parameters variation during methane adsorption under different temperature and pressure[J]. Fuel, 2021, 289(1): 119804.
|
| [29] |
亓宪寅,杨典森,陈卫忠. 煤层气解吸滞后定量分析模型[J]. 煤炭学报,2016,41(S2):475−481.
QI Xianyin, YANG Dianshen, CHEN Weizhong. Resarch of a bidisperse diffusion model based on adsorption hysteresis[J]. Journal of China Coal Society, 2016, 41(S2): 475−481.
|
| [30] |
王公达,REN Tingxiang,齐庆新,等. 吸附解吸迟滞现象机理及其对深部煤层气开发的影响[J]. 煤炭学报,2016,41(1):49−56.
WANG Gongda, REN Tingxiang, QI Qingxin, et al. Mechanism of adsorption-desorption hysteresis and its effect on deep coalbed methane development[J]. Journal of China Coal Society, 2016, 41(1): 49−56.
|
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