Comparison of CuCl/NaY and CuCl/AC Process Performance Using a Vacuum Pressure Swing Adsorption Simulation
A five-bed, seven-step vacuum pressure swing adsorption (VPSA) system was computationally modeled to assess carbon monoxide (CO) separation from CO/N<sub>2</sub> mixed gas (30/70, <i>v</i>/<i>v</i>). Two adsorbents with distinct isotherm characteristics (steep-slo...
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MDPI AG
2025-04-01
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| author | Congli Li Xuling Guo Lei Tang Jiahui Yang Qi Shi |
| author_facet | Congli Li Xuling Guo Lei Tang Jiahui Yang Qi Shi |
| author_sort | Congli Li |
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| description | A five-bed, seven-step vacuum pressure swing adsorption (VPSA) system was computationally modeled to assess carbon monoxide (CO) separation from CO/N<sub>2</sub> mixed gas (30/70, <i>v</i>/<i>v</i>). Two adsorbents with distinct isotherm characteristics (steep-slope CuCl/NaY and flat-slope CuCl/AC) were comparatively evaluated for their process performance, focusing on CO purity, recovery, productivity, and energy consumption. The simulation results demonstrate that under industrial-grade specifications requiring both adsorbents to achieve CO purity > 97% and recovery > 83%, CuCl/AC achieves a 3.9-fold higher productivity (27.238 vs. 7.016 mol kg<sup>−1</sup> h<sup>−1</sup>) than CuCl/NaY while maintaining a comparable energy consumption. This performance disparity stems from CuCl/AC’s enhanced bed layer CO desorption amount during a cyclic VPSA operation, which enhances feed gas throughput per unit adsorbent mass. This study demonstrates that CuCl/AC, with its flat-slope adsorption isotherm and high desorption amount, can serve as a promising adsorbent for achieving high-purity CO with a significantly enhanced productivity via the VPSA process. |
| format | Article |
| id | doaj-art-4255599d6593437480ac2cf2876ece4a |
| institution | OA Journals |
| issn | 2297-8739 |
| language | English |
| publishDate | 2025-04-01 |
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| series | Separations |
| spelling | doaj-art-4255599d6593437480ac2cf2876ece4a2025-08-20T02:25:07ZengMDPI AGSeparations2297-87392025-04-011249310.3390/separations12040093Comparison of CuCl/NaY and CuCl/AC Process Performance Using a Vacuum Pressure Swing Adsorption SimulationCongli Li0Xuling Guo1Lei Tang2Jiahui Yang3Qi Shi4College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, ChinaCollege of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, ChinaCollege of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, ChinaCollege of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, ChinaCollege of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, ChinaA five-bed, seven-step vacuum pressure swing adsorption (VPSA) system was computationally modeled to assess carbon monoxide (CO) separation from CO/N<sub>2</sub> mixed gas (30/70, <i>v</i>/<i>v</i>). Two adsorbents with distinct isotherm characteristics (steep-slope CuCl/NaY and flat-slope CuCl/AC) were comparatively evaluated for their process performance, focusing on CO purity, recovery, productivity, and energy consumption. The simulation results demonstrate that under industrial-grade specifications requiring both adsorbents to achieve CO purity > 97% and recovery > 83%, CuCl/AC achieves a 3.9-fold higher productivity (27.238 vs. 7.016 mol kg<sup>−1</sup> h<sup>−1</sup>) than CuCl/NaY while maintaining a comparable energy consumption. This performance disparity stems from CuCl/AC’s enhanced bed layer CO desorption amount during a cyclic VPSA operation, which enhances feed gas throughput per unit adsorbent mass. This study demonstrates that CuCl/AC, with its flat-slope adsorption isotherm and high desorption amount, can serve as a promising adsorbent for achieving high-purity CO with a significantly enhanced productivity via the VPSA process.https://www.mdpi.com/2297-8739/12/4/93vacuum pressure swing adsorptionprocess simulationadsorbentcarbon monoxideproductivity |
| spellingShingle | Congli Li Xuling Guo Lei Tang Jiahui Yang Qi Shi Comparison of CuCl/NaY and CuCl/AC Process Performance Using a Vacuum Pressure Swing Adsorption Simulation Separations vacuum pressure swing adsorption process simulation adsorbent carbon monoxide productivity |
| title | Comparison of CuCl/NaY and CuCl/AC Process Performance Using a Vacuum Pressure Swing Adsorption Simulation |
| title_full | Comparison of CuCl/NaY and CuCl/AC Process Performance Using a Vacuum Pressure Swing Adsorption Simulation |
| title_fullStr | Comparison of CuCl/NaY and CuCl/AC Process Performance Using a Vacuum Pressure Swing Adsorption Simulation |
| title_full_unstemmed | Comparison of CuCl/NaY and CuCl/AC Process Performance Using a Vacuum Pressure Swing Adsorption Simulation |
| title_short | Comparison of CuCl/NaY and CuCl/AC Process Performance Using a Vacuum Pressure Swing Adsorption Simulation |
| title_sort | comparison of cucl nay and cucl ac process performance using a vacuum pressure swing adsorption simulation |
| topic | vacuum pressure swing adsorption process simulation adsorbent carbon monoxide productivity |
| url | https://www.mdpi.com/2297-8739/12/4/93 |
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