Adsorption Characteristics of CO(2)/CH(4)/N(2) Ternary Mixtures on Anthracite from 293.15 to 353.15 K and Pressures Up to 7 MPa

[Image: see text] We present the adsorption data of CO(2), CH(4), and N(2) ternary mixtures on anthracite from 293.15 to 353.15 K and pressures up to 7 MPa obtained via a volumetric method. The experimental data are given at different conditions, and simple analysis is made. The results show that the excess adsorption capacity of the CO(2)/CH(4)/N(2) mixture and its component gases decreases linearly with the increase of temperature for constant composition. The total adsorption capacity is between pure CO(2) and pure N(2) in the entire pressure range. The effect of total pressure on total adsorption capacity is mainly influenced by the CO(2) mole fraction in the feed gas. However, the adsorption capacities of CH(4) and N(2) decrease, and CO(2) presents a maximum with the decrease in total pressure. For the feed gases of 10% CH(4) and 16% CO(2), the total adsorption capacity increases when the ratio of CO(2) and CH(4) increases, respectively, and the increasing magnitudes for 10% CH(4) are larger than that of 16% CO(2). The obtained experimental data are in agreement with the extended three-parameter Ono–Kondo model.