摘要
提出了在煤层气吸附解吸实验过程中,吸附相体积和自由空间误差体积是造成吸附量测试误差的主要因素。通过分析吸附量的计算公式发现:这两种误差之和与吸附量误差成正比,而吸附解吸曲线之间的差异与这两种误差无关;增大样品缸容积可以减小自由空间误差体积对吸附量的影响,却不能改变吸附相体积对吸附量的影响。
This paper put forward the adsorbed phase volume and the test error volume of free space are the main factors which caused the test error of adsorption volume in the process of coal-bed methane adsorption and desorption experiments. It was found that the sum of the two errors is proportional to adsorption error but the difference between adsorption and desorption curves has nothing to do with the two types of errors by analyzing the formula for calculating the adsorption capacity. Enlarge sample cylinder volume can reduce the effect of the test error volume of free space on adsorption but the the effect of adsorbed phase volume does not change.
出处
《煤》
2009年第11期1-4,共4页
Coal
基金
国家973煤层气项目"煤层气开采基础理论研究"(2002CB211708-01)
关键词
煤层气
甲烷
吸附相体积
自由空间体积
coal-bed methane
methane
adsorbed phase volume
free-space volume
