摘要
为了准确预测低温条件下煤对甲烷的吸附等温线,选用平顶山己15-17煤层煤样,并以高低温变频实验装置为依托,对煤样进行高/低温环境(-20、-10、0、10、20℃)下的甲烷吸附试验。基于吸附势理论,利用吸附特性曲线的唯一性,根据20、10、0℃的甲烷吸附数据,预测-10、-20℃时甲烷的吸附等温线。结果表明:预测的吸附等温线与实测的吸附等温线吻合良好,平均相对误差分别为2.47%和2.64%。
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 irl 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 resuhs 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%.
出处
《煤矿安全》
北大核心
2017年第5期22-25,共4页
Safety in Coal Mines
基金
国家自然科学基金资助项目(51274090)
关键词
甲烷吸附等温线
吸附势理论
低温
吸附特性曲线
平均相对误差
CH4 isothermal adsorption curve
adsorption potential theory
low temperature
adsorption characteristic curve
average relative error
