高校地质学报Issue(4)：648-654,7.
高温高压条件下深部煤层气吸附行为
Adsorption Behavior of Deep Coalbed Methane Under High Temperatures and Pressures
摘要
Abstract
In order to analyze adsorption characteristics of deep coalbed, this paper studies the main coalbed of Eastern Ordos Basin and develops 4 groups of methane isothermal adsorption experiments of high pressure of the coal samples under different temperatures. By varying geological factors including temperature, pressure, and coal rank etc, we studied the adsorption characteristics under high temperatures and high pressures. Meanwhile, effects of geological factors on the adsorption behavior are analyzed by comparing results of different geologic factors, and the adsorption behaviors of deep coalbeds and shallow coalbeds. The results show that the adsorption characteristics of deep coalbeds is mainly influenced by temperature and pressure for deep coalbeds;The adsorption capacity of coal samples to CH4 is greatly reduced and the coal rank, coal macerals, ash content and moisture are less effective than the shallow coalbed on the adsorption property under high temperature conditions. So temperature and pressure become determinant factors in controlling the adsorption quantity. Adsorption capacities of the coal samples decrease along with the increase in pressure as the pressure reaches a certain value under 100℃according to the analyses, With the increase in pressure, the density difference of gas between the adsorbed phase and dissociative phase decreases gradually and Langmuir isothermal adsorption model is no longer applicable.关键词
深部煤层气/吸附特征/高温高压Key words
deep coalbed methane/adsorption characteristics/high temperature and pressure分类
天文与地球科学引用本文复制引用
赵丽娟,秦勇,Geoff Wang,吴财芳,申建..高温高压条件下深部煤层气吸附行为[J].高校地质学报,2013,(4):648-654,7.基金项目
江苏省普通高校研究生科研创新计划项目（CXZZ12-0947）；国家科技重大专项（2011ZX05033-03）；国家自然科学基金重点项目（40730422）；国家科技支撑计划（2012BAK04B00）联合资助 （）
