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针对开滦集团下属3个煤矿CO长期超标的现象,测定了CO在煤层中的吸附量和煤的孔隙结构,分析了不同孔径对煤层中CO吸附量的影响,讨论了煤的孔隙率、分形维数、比表面积与煤层中CO吸附量的关系.研究结果表明,低压条件下,煤层中CO气体的吸附量与微孔体积分数呈二次曲线关系,随着压力的升高CO的吸附量与微孔体积分数成正比关系;过渡孔体积分数的增加不利于煤层中CO的吸附;孔隙率、分形维数与CO的吸附量呈二次曲线关系;CO吸附量与煤样内比表面积呈正比.图5,表5,参11.
In view of the long-term over-standardization of CO in three coal mines of Kailuan Group, the adsorption amount of CO in coal seam and the pore structure of coal were measured. The influence of different pore size on the adsorption amount of CO in coal seam was analyzed. The porosity, fractal Dimension, specific surface area and the amount of CO adsorbed in the coal seam.The results show that under the condition of low pressure, the adsorption amount of CO gas in the coal seam is quadratic curve with the micropore volume fraction, with the increase of pressure, And pore volume fraction is proportional to the proportion of transition pore volume fraction is not conducive to the adsorption of CO in the coal seam; porosity, fractal dimension and CO adsorption showed a quadratic curve; CO adsorption capacity and the coal sample surface area was positive Figure 5, Table 5, reference 11.