Ultrapurification of gases in a continuous membrane column cascade Original Research Article

The high purification of gases from easily penetrating impurities by a cascade of a continuous membrane column type has been investigated experimentally and theoretically. The equations for the separation power of cascades in the case of high purification of gases from low level impurities has been obtained. The efficiency of a continuous membrane column cascade is compared with exergetic efficiency of a multistage symmetric cascade in the case of non-mixed flows at different concentrations.