Abstract
In this work, two industrial dual-step pressure swing adsorption (PSA) processes were designed and simulated to obtain high-purity methane, CO2, and syngas from a gas effluent of a CO2 electroreduction reactor using different design configurations. Among the set of zeolites that was investigated using Monte Carlo and molecular dynamics simulations, NaX and MFI were the ones selected. The dual-PSA process for case study 1 is only capable of achieving a 90.5% methane purity with a 95.2% recovery. As for case study 2, methane is obtained with a 97.5% purity and 95.3% recovery. Both case studies can produce CO2 with high purity and recovery (>97 and 95%, respectively) and syngas with a H2/CO ratio above 4. Although case study 2 allows methane to be used as domestic gas, a much higher value for its energy consumption is observed compared to case study 1 (64.9 vs 29.8 W h molCH4-1).
| Original language | English |
|---|---|
| Pages (from-to) | 8847-8863 |
| Number of pages | 17 |
| Journal | Industrial and Engineering Chemistry Research |
| Volume | 62 |
| Issue number | 22 |
| DOIs | |
| Publication status | Published - 7 Jun 2023 |
Bibliographical note
Funding Information:This work was financially supported by LA/P/0045/2020 (ALiCE), UIDB/50020/2020, and UIDP/50020/2020 (LSRE-LCM), funded by national funds through FCT/MCTES (PIDDAC); project HyGreen&LowEmissions (NORTE-01-0145-FEDER-000077), supported by Norte Portugal Regional Operational Programme (NORTE 2020), under the PORTUGAL 2020 Partnership Agreement, through the European Regional Development Fund (ERDF). Mariana Bessa acknowledges her Ph.D. scholarship 2022.10166.BD funded by FEDER funds through NORTE 2020 and by national funds through FCT/MCTES. A.L.-T. and J.M.V.-L. acknowledge Santander Universidades for the Ibero-American Scholarship Santander Research.
