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A Comparison between the Product-Refill and the Equalization Oxygen Pressure Swing Adsorption Processes | ||
| Iraqi Journal of Chemical and Petroleum Engineering | ||
| Article 1, Volume 19, Issue 1, 2018, Pages 61-66 | ||
| Author | ||
| Zaid Adnan Abdel-Rahman | ||
| Abstract | ||
| This work presents a design for a pressure swing adsorption process (PSA) to separate oxygen from air with approximately 95% purity, suitable for different numbers of columns and arrangements. The product refill PSA process was found to perform 33% better (weight of zeolite required or productivity) than the pressure equalization process. The design is based on the adsorption equilibrium of a binary mixture of O2 and N2 for two of the most commonly used adsorbents, 5A & 13X, and extension from a single column approach. Zeolite 13X was found to perform 6% better than zeolite 5A. The most effective variables were determined to be the adsorption step time and the operational pressure. Increasing the adsorption step time from 1 to 5 minutes decreased the performance by approximately 5 times. Increasing the pressure from 2 to 6 bars increased the performance by approximately 3 times. | ||
| Keywords | ||
| Oxygen production; PSA; process design; product refill; equalization | ||
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