Modelling and simulation of pessure swing adsorption

PSA is an adsorption-based separation process in which separation is achieved when an adsorbent preferentially adsorbs one or more components from a feed mixture. A brief back ground on the principles of adsorption and different kinds of cyclic adsorption processes are discussed. The first task in the design of PSA is to select the adsorbent thus adsorbent properties (capacity, selectivity, regenerability) also discussed. As an alternative to the Pressure Swing Adsorption (PSA) based on the Skarstrom cycle or its variants, a novel two-bed PSA-called duplex PSA has been proposed by Hirose and independently by Leavitt to get both products of high purities and a modified duplex PSA has been presented to enhance the product purities for and productivities.