Experimental Study on Influence of Coal Ash Content and Volatile Matter upon Its Methane Adsorption Capability
LI Shugang
HU Weiwei
LIN Haifei
ZHAO Pengxiang
WEI Zongyong
Abstract：In order to study the influence of coal ash content and volatile matter on the coal methane absorption capability, measurement was carried out on the isothermal adsorption curve and the adsorption constants a and b of the coal samples from one coal mine and with different ash content and volatile matter by using a high-capacity adsorption device in the laboratory, and analysis was made on them with the multiple linear regression software SPSS. The experimental results showed that the isothermal adsorption curve of coal samples with different coal ash content and volatile matter well fit the Langmuir equation,and both had a certain influence on the coal methane adsorption performance;when the coal ash content was constant,the adsorption constants a increased linearly with the increase of volatile matter,but the constant b decreased linearly with the increase of volatile matter;and when the volatile matter was constant,the adsorption constants a increased linearly with the increase of coal ash content,but the constant b decreased linearly with the increase of the coal ash content. This research results provided a certain theoretical basis for the accurate determination of the parameters such as coal-seam gas content and gas pressure.
Keywords：coalash contentvolatile matteradsorption constantisothermal adsorption curvemethane
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 16-18 )