Abstract: Gas mixture adsorption is related to temperature and pressure, also there exists the competing adsorption phenomenawith the change of gas composition.The gas mixture adsorption model can be used to calculate the adsorption equilibriumquantity of each component of the gas mixture at certain temperature and pressure by using pure component or bi-component gasadsorption isotherm. The two-phase equilibrium calculation model with the adsorption phase and freedom gas phase is developed .using Flory Hugging Vacancy Solution Model(FHVSM)of gas adsorption.For two samples of dual gas mixture adsorptionequilibrium, the adsorption equilibrium simulation calculation is completed after regressing the parameters of the pure componentadsorption isotherm. The studied result shows that FHVSM can be used to describe the gas mixture adsorption equilibrium andsimulation calculations of adsorption equilibrium for both hydrocarbon gas mixture and non-hydrocarbon gas mixture.

Key words: adsorption, model, gas, mixture, phase equilibrium, simulation