Volume 46 Issue 7
Turn off MathJax
Article Contents
Abstract
Related Articles
XIA Hui, CAI Feng, YUAN Yuan, XU Chao. Experimental study on gas adsorption and desorption characteristics of coal sample under variable temperature and pressure[J]. Journal of Mine Automation, 2020, 46(7): 89-93. DOI: 10.13272/j.issn.1671-251x.2019100005
Citation: XIA Hui, CAI Feng, YUAN Yuan, XU Chao. Experimental study on gas adsorption and desorption characteristics of coal sample under variable temperature and pressure[J]. Journal of Mine Automation, 2020, 46(7): 89-93. DOI: 10.13272/j.issn.1671-251x.2019100005
shu

Experimental study on gas adsorption and desorption characteristics of coal sample under variable temperature and pressure

  • 1.

    School of Energy and Safety, Anhui University of Science and Technology, Huainan 232001, China

  • 2.

    Key Laboratory of Safety and High-efficiency Coal Mining of Ministry of Education, Anhui University of Science and Technology, Huainan 232001, China

More Information
    Graphical Abstract
    • Abstract
  • In order to study influence of temperature and pressure on gas adsorption and desorption characteristics of coal sample, adsorption capacity, isosteric heat of adsorption, Langmuir adsorption constant, initial effective diffusion coefficient and diffusion kinetic parameter under different temperatures(20,25,30,35,40,45,50 ℃) and pressure(0-5 MPa) were analyzed by use of gas adsorption and desorption experimental device. The results show that adsorption capacity decreases with the increase of temperature and increases with the increase of pressure. When adsorption capacity is constant, the higher the temperature is, the greater the gas adsorption pressure is, and isosteric heat of adsorption increases with the increase of adsorption capacity. Langmuir adsorption constant a decreases firstly, and then rises and decreases again with the increase of temperature, and reaches peak value at 45 ℃, while Langmuir adsorption constant b decreases with the increase of temperature. Initial effective diffusion coefficient and diffusion kinetic parameter increase with the increase of temperature, and increase amplitude is most obvious at 35-40 ℃.
    • FullText(HTML)
    • References (0)
    • Related Articles

  • Related Articles

    [1]JIA Nan. The influence of coal pore structure on gas desorption-diffusion-seepage process[J]. Journal of Mine Automation, 2024, 50(3): 122-130. DOI: 10.13272/j.issn.1671-251x.2023110076
    [2]MA Xingying, GONG Xuanping, CHENG Xiaoyu, CHENG Cheng, LI Debo. Study on gas desorption dynamic features of mixed coal samples with different particle sizes[J]. Journal of Mine Automation, 2023, 49(8): 142-147. DOI: 10.13272/j.issn.1671-251x.2022110069
    [3]YAN Guofeng, HUANG Xingli, YAN Zhenguo. Research on exothermic and kinetic characteristics of low-temperature oxidation of preoxidized coal[J]. Journal of Mine Automation, 2022, 48(7): 135-141. DOI: 10.13272/j.issn.1671-251x.2022030032
    [4]HOU Fei, CAO Weihu, WANG Yi, ZHONG Xiaoxing. Comparative study on test methods of coal low-temperature oxidation kinetic parameters[J]. Journal of Mine Automation, 2021, 47(9): 58-64. DOI: 10.13272/j.issn.1671-251x.17812
    [5]ZHOU Wei, YUAN Liang, XUE Junhua, HE Guanghui, LUO Yong, DUAN Changrui, REN Bo. Experimental analysis of isothermal adsorption and desorption characteristics of gas in coal samples with multi grain sizes: A case study on No.3 coal in Sihe Coal Mine[J]. Journal of Mine Automation, 2018, 44(1): 26-30. DOI: 10.13272/j.issn.1671-251x.17277
    [6]YANG Jianjian, LI Xu, FU Shichen, WU Miao. Research on correction coefficient of relationship formula of shearer parameters and coal rock hardness[J]. Journal of Mine Automation, 2015, 41(8): 123-126. DOI: 10.13272/j.issn.1671-251x.2015.08.031
    [7]LI Yaoqian, LIU Guolei. Research of influence law of water content in coal to gas adsorption and desorption characteristics[J]. Journal of Mine Automation, 2015, 41(6): 74-77. DOI: 10.13272/j.issn.1671-251x.2015.06.018
    [8]SU Heng, YANG Yong, CHEN Lianfang, ZHAO Jun. Research of influence of pressure and temperature on gas diffusion law[J]. Journal of Mine Automation, 2015, 41(2): 65-67. DOI: 10.13272/j.issn.1671-251x.2015.02.018
    [9]XIAO Yang, WANG De-ming, ZHONG Xiao-xing, JIAO Xin-ming. Research of Oxidation Kinetics Testing Equipment for Coal Spontaneous Combustion Tendency[J]. Journal of Mine Automation, 2012, 38(4): 1-4.
    [10]ZHU Yu. Study on Computer Automatic Control of Diffuse Stove[J]. Journal of Mine Automation, 2002, 28(6): 16-18.

Catalog

    Get Citation
    PDF
    XML

    Article Metrics

    Article views (95) PDF downloads (14) Cited by()
    Related

    苏ICP备 05016349号-2

    Supported by: Beijing Renhe Information Technology Co., Ltd. Visits：1152011    Baidu Analytics

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return