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The PSA is a wall - known technology widely used for the separation of gas mixtures. The adsorption
adsorption cycle of the PSA system accomplished through the pressure dependency of adsorption phenomena. Different mathematical models can be employed to demonstrate the PSA process. In particular. when the components of the mixture have different diffusion properties. a kinetic model is proper to describe the system. In this paper. a kinetic model for the separation of N2 from air IS presented. The adsorbent used in the study IS 4.A molecular sieve material. A nonlinear relationship IS assumed for the time dependency of the pressure during the
blow down and pressurization steps of
PSA cycles In all other modeling studies of the S\ skill. pressure has been assumed to be constant. Furthermore. the gas flow velocity in the adsorption column IS
assumed to be not constant in the case of bulk separation process of N: from _1Ir. The orthogonal collocation method is used
for solving the set of partial differential equation, and the results have demonstrated a good agreement with experimental data.