基于单层吸附理论不同温度下煤层气等温吸附特性

发布时间：2018-07-03 18:25

  本文选题：煤层气 + 吸附特性　； 参考：《煤炭科学技术》2017年07期

【摘要】：为了更准确地描述煤体对甲烷的吸附特性,基于常规等温吸附试验,对煤体甲烷吸附量进行了修正,引入了真实吸附量和视吸附量的计算方法,对比分析了视吸附量和真实吸附量之间的差异以及温度对二者差异性的影响;并以真实吸附量为基础,得到饱和吸附量和温度间的函数关系。结果表明:真实吸附量和视吸附量之间的差异会随着温度升高而逐渐显著,90℃时,二者差异最大,可达8%;煤体的吸附能力与其比表面积成正比,随着温度升高,因煤体比表面积不断增大,饱和吸附量随温度呈线性规律增长。研究结果可为正确认识煤体对煤层气的吸附特性及煤层气资源的开发利用提供参考。
[Abstract]:In order to describe the adsorption characteristics of methane on coal body more accurately, based on the conventional isothermal adsorption test, the adsorption capacity of methane in coal body was modified, and the calculation method of real adsorption capacity and apparent adsorption capacity was introduced. The difference between apparent adsorption capacity and real adsorption capacity and the effect of temperature on their differences were analyzed, and the functional relationship between saturation adsorption capacity and temperature was obtained based on the real adsorption capacity. The results show that the difference between the real adsorption capacity and apparent adsorption capacity will become more and more significant at 90 鈩，

本文编号：2094595