| In this paper, multi-gas at atmospheric pressure and under high pressure to start the emission laws, through laboratory experiments to study the coal containing CO2, CH4, N2 and other multi-component gas adsorption, the difference in emission capacity, and a variety of mixed-gas adsorption conditions of decentralization were scattered gas group change over time. One-component gas emission laws and Absorption depends on the gas adsorbent of the physical and chemical properties of its own, and mixed-gas emission laws and not only the nature of each component, but also with the components in the composition of multi-gas, and one of In addition to the emission of a fraction of its physical and chemical properties of its own factors, but also with other components have a direct bearing on its constraints, the emission of each component changes with time into a function.Development of gas samples and gas samples collected mixer device. Gas mixer can be a different kind in a certain proportion of mixed gas, and as the speed of adsorption and emission of the gas measuring device. Gas sample collection device can be mixed collection of free gas, for the analysis of its components.Experimental Analysis of coal-bed methane resulted in a multi-body highlights the dangers of the impact of the law, improve the prediction of regional emission coal initial velocity of the target prediction accuracy.
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