MATHEMATICAL MODELING OF THE SEPARATION OF A MIXTURE OF NITROGEN AND OXYGEN USING A SELECTIVE MEMBRANE

A mathematical model is presented for the process of separating air into nitrogen and oxygen in a membrane installation, in which separation occurs in dynamics on the inside and outside of a tubular porous membrane. Using numerical modeling of the said process, a distribution has been obtained for nitrogen concentration after passage through the membrane. It has been established that the permeability of the membrane tubes has a signifi cant eff ect on the quality of the bleed gas and the installation ramp-up time
A mathematical model is presented for the process of separating air into nitrogen and oxygen in a membrane installation, in which separation occurs in dynamics on the inside and outside of a tubular porous membrane. Using numerical modeling of the said process, a distribution has been obtained for nitrogen concentration after passage through the membrane. It has been established that the permeability of the membrane tubes has a signifi cant eff ect on the quality of the bleed gas and the installation ramp-up time
Author:  M. A. Anisimova, A. Ya. Gil′manov, A. V. Kuznetsov, A. P. Shevelev
Keywords:  separation, gas mixture, mechanics, selective membranes, permeability, mass conservation law, Darcy′s law
Page:  1542