EngineeringA Comparison between the Product-Refill and the Equalization Oxygen Pressure Swing Adsorption Processes
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 producti...
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| Format: | Article |
| Language: | English |
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University of Baghdad/College of Engineering
2018-03-01
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| Series: | Iraqi Journal of Chemical and Petroleum Engineering |
| Online Access: | https://ijcpe.edu.iq/index.php/main/article/view/110/94 |
| Summary: | 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 O2and N2for 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 theoperational 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 |
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| ISSN: | 1997-4884 |