Prediction for CH4 Isothermal Adsorption Curve of Coal at Low Temperature Based on Adsorption Potential Theory
MA Xiangpan
WANG Zhaofeng
REN Haoyang
Abstract：In order to accurately predict CH4 isothermal adsorption curve of coal at low temperature,the isothermal tests were done at different temperatures (-20,-10,0,10,20 ℃),which relied on high/low temperature adsorption experiment facility and used the sample of Ⅵ15-17 coal bed in Pingdingshan.Based on the uniqueness of adsorption characteristic curve in adsorption potential theory,in accordance with the experimental data at 20,10,0 ℃,the CH4 isothermal adsorption curves of coal at-10,-20 ℃ were predicted.The results showed that the predicted isothermal adsorption curves approximately agreed with reality isothermal adsorption curve,and the average relative error was 2.47％ and 2.64％.
Keywords：CH4 isothermal adsorption curveadsorption potential theorylow temperatureadsorption characteristic curveaverage relative error
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 22-25 )