Study on the Effect of HS on the Adsorption of CH, N, and CO by Anthracite.

In order to study the effect of HS on gas adsorption in a coal seam, the adsorption characteristics of single-component CO, CH, N, and HS and multicomponent HS mixed with CO, CH, and N by anthracite were simulated by using the Grand Canonical Ensemble Monte Carlo (GCMC) method. The results show that the adsorption capacity of CO, CH, N, and HS in anthracite decreases with increasing temperature and increases with increasing pressure. The isothermal adsorption curves of CO, CH, N, and HS and different proportions of HS/CH, HS/N, and HS/CO are highly consistent with the Langmuir equation, and the is above 0.99. Under different temperature and pressure conditions, the adsorption capacity of HS and CO is stronger than that of coal for N and CH, and the adsorption capacity difference is about 3 mmol/g. There is competitive adsorption among HS, CO, CH, and N, and HS has a superior adsorption property. When HS and other gases exist at the same time, the adsorption capacities of CH, N, and CO are reduced by 48-60%, 81-91%, and 51-66%, respectively.