Hydrogen purification by the multibed pressure swing adsorption process

Model simulations are performed for gas separation by the most widely used pressure swing adsorption (PSA) process: the multibed procedd with internal product recovery. The performance of the multibed process is simulated by equilibrium theory using a single bed. The specific separation being considered is hydrogen purification using zeolite 5A as the sorbent. The effects of the following PSA variables on separation are quantitatively discussed: H₂ purge-to-feed ratio, total cycle time, end pressure of cocurrent blowdown, and the ambient temperature.