The Effect of Desorption Pressure on Breakthrough Behavior of CO2 and N2 Mixture on Zeolites 3A, 4A, 5A, and 13X

The effect of desorption pressure on CO2/N2 breakthrough behaviors for 4 different adsorbents were studied at a fixed bed. Zeolite 3A, 4A, 5A, 13X pellets were used as adsorbents. Cyclic operations were executed with varying desorption pressure from vacuum (0 bar) to 3 bar without changing other conditions such as adsorption step pressure (3 bar), temperature (293K), composition (CO₂:N₂=10:90vol%) and flow rate (400ccm). Adsorption step time was 80 min and desorption step time was 80 min for 5 Cycles. After the experiment, breakthrough time, saturation time, and adsorption amount were measured and compared in order to find an optimum adsorbent and a proper operating condition for a post combustion CO₂ capture process.