煤的吸附常数与最高试验压力关系的研究

研究煤的吸附性能时,意外地发现同一试验条件下获得煤的L angmuir等温吸附常数并非常数,是一变值,其变化是由试验采用的最高试验压力不同而引起。通过对中国主要煤田不同变质程度煤的等温吸附试验数据处理,证明煤的L angmuir等温吸附常V_L,p_L与最高试验压力分别呈正线性相关,并具有普遍性。为了确保煤的吸附常数之间的可比性以及对已有资料的正确利用,建立了将不同最高试验压力的等温吸附试验结果统一到同一最高试验压力的方法。 

Study of the relationship between coal adsorption constent and maximum pressure used

The law that the adsorption values available for coal Langmuir isotherm testing isn't constant but variable under the same testing conditions occasionally was discovered by the author at studying coal absorption capacity.The experiment result indicates different maximum pressures used in the testing cause the variation of absorption value.The research result further reveals that the relation between absorption constant V_L & p_L and maximum testing pressures is positive linear trend,and this law identified is of universal based on a lot of absorption data of coal samples from several main coalfields of China.In order to show the correlation among absorption constants and make full use of the data and information collected from the past experiments,a special method transferring absorption estimates under different maximum testing pressures to same maximum pressures is established in the testing study.