页岩气等温吸附/解吸特征

摘要

The experimental study of shale gas adsorption and desorption characteristics were carried out.The fitness and comparison of adsorption experiment data and desorption experiment data with various adsorption and desorption models were made,respectively.The results show that Langmuir model is suitable to calculate the adsorption isothermal curve which fits the experiment data well; shale gas adsorption curve and desorption curve don't coincide and the desorption curve is in hysteresis; desorption model which fits the experiment data very well can be used to calculate the desorption curve.%对页岩的吸附与解吸特征进行实验研究,通过吸附模型和解吸模型分别对等温吸附实验和等温解吸实验数据进行拟合和作对比.研究结果表明:Langmuir模型描述页岩气等温吸附过程比较合适；页岩的吸附曲线与解吸曲线不重合,解吸过程存在着滞后.页岩气的等温解吸过程宜用解吸式模型进行模拟.