甲烷在煤表面的吸附势与煤阶的关系  

Relationship of Coalbed Methane Adsorption Potential and Coal Rank

作　　者：苏现波[1] 刘国伟[1] 郭盛强[1] 林晓英[1] 

机构地区：[1]河南理工大学,河南焦作454000

出　　处：《中国煤层气》2006年第3期21-23,共3页China Coalbed Methane

基　　金：国家973计划项目(编号:2002CB211705);国家自然科学基金项目(编号:50534070-E04)资助。

摘　　要：本文根据在平衡水分、30℃条件下实测和收集的煤的等温吸附资料,采用吸附势理论,计算了各个煤样吸附等体积(5cm3/g)甲烷时的吸附势,发现随煤阶的增加吸附势呈规律性变化。这种变化规律与兰氏体积随煤阶的变化规律一致,且完全与四次煤化作用跃变对应。可见煤层甲烷的吸附与煤的分子结构、晶体结构和孔隙度密切相关。Based on the adsorption potential theory and the isotherm data measured and collected at 30℃ of the equilibrium moisture, the adsorption potential of coals with different ranks is calculated and equivalent methane （5cm^3/g） is adsorbed on these coals. The result is found out that the evolution of adsorption capacity and potential are weU-regulated with coal rank. The evolution is absolutely corresponding to the coalification jump. Therefore, coalbed methane adsorption has close relationships with coal molecular structure, crystal structure and porosity.

关 键 词：煤层甲烷 吸附势 煤阶 煤化作用跃变 

分 类 号：TD712[矿业工程—矿井通风与安全]