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Experimental Study of Different Granularity on the Gas Absorption of Coal

机译：不同粒度对煤气吸收的实验研究

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To study the impact of different granularities on the gas adsorption of coal, the experimental system has been designed to apply dynamic constant pressure and the coal sample which is made from the same quality coal. The experimental data of the gas adsorption and desorption capacity with four different granularities coal sample under different initial pressure are obtained. Relative analysis to the different data shows the mathematical equation relationship among the capacity, rate and time of gas adsorption. The fitted curves of gas adsorption capacity with time in different granularities coal indicated how the size of granularities influences the time to reach the equilibrium of adsorption and desorption, the rate of gas adsorption. And the fitted curve showed the initial pressure had no influence on the rate of gas adsorption too. The smaller of the granularities, the faster of the adsorption rate, the shorter the time spent to adsorption equilibrium; the bigger of the granularities, the slower of the adsorption rate, the longer the time spent to adsorption equilibrium. It can be concluded that the rate of gas adsorption and desorption has scale effect.
机译：为研究不同粒度对煤气吸附的影响，实验系统设计用于施加由相同质量煤制成的动态恒压和煤样。获得了在不同初始压力下具有四种不同粒度煤样的气体吸附和解吸能力的实验数据。对不同数据的相对分析显示了气体吸附的容量，速率和时间之间的数学方程关系。在不同粒度煤中的气体吸附能力的拟合曲线表明粒度尺寸如何影响吸附和解吸的均衡，气体吸附速率。拟合曲线显示初始压力对气体吸附速率没有影响。较小的粒度，吸附速率越快，吸附均衡的时间越短;粒度较大，吸附速率较慢，时间越长，吸附均衡。可以得出结论，气体吸附和解吸速率具有规模效应。

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