The Study of Cyclic Adsorption Air Separation and Oxygen Concentration Processes
The paper presents the dynamics of the developed mathematical model of pressure swing adsorption (PSA) process, which is carried out in a dual-adsorber unit with a 13X zeolite adsorbent used for air separation with the aim of oxygen concentration. The authors formulate and solve the regularized problem of identifying the kinetic parameters for the mathematical model - the mass and oxygen transfer coefficients for oxygen and nitrogen. Numerical studies of the effect of raw materials load (air composition, environment temperature and pressure) and control variables (“adsorption - desorption” cycle time, pressure at the compressor outlet, laws of changing the opening degree of the inlet and discharge valves of the PSA unit) on the dynamics and performance indicators of cyclic adsorption process of air oxygen enrichment have been carried out. The mathematical and algorithmic support for the creation of automated processes and PSA units for gas mixtures separation and purification has been developed.