Biogas upgrading through CO2 methanation in a multiple-inlet fixed bed reactor: Simulated parametric analysis
A simulation of the catalytic CO2 methanation reaction was carried out, evaluating the effect of reactants distributed feeding throughout the bed. The main operational parameters were studied in a multiple-inlet reactor to test their effect on conversions and, most importantly, on selectivities towa...
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Elsevier
2025-03-01
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| Series: | Journal of CO2 Utilization |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2212982025000228 |
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| author | P. Aragüés-Aldea V.D. Mercader P. Durán E. Francés J.Á. Peña J. Herguido |
| author_facet | P. Aragüés-Aldea V.D. Mercader P. Durán E. Francés J.Á. Peña J. Herguido |
| author_sort | P. Aragüés-Aldea |
| collection | DOAJ |
| description | A simulation of the catalytic CO2 methanation reaction was carried out, evaluating the effect of reactants distributed feeding throughout the bed. The main operational parameters were studied in a multiple-inlet reactor to test their effect on conversions and, most importantly, on selectivities towards both CO and CH4 as reaction products. The analyzed parameters were, firstly, the number of feeding points (N) and the dosage degree of reactants, followed by temperature (T), partial pressures of reactants (H2:CO2 ratios), and the composition of a sweetened biogas as feeding stream (CH4:CO2 ratios). It is confirmed that a distribution of biogas through several side inlets improves selectivities to the desired CH4 product, over other feeding configurations. The effect of distributing reactants becomes intensified when the number of lateral feedings increases. This observation supports the experimental trends already proven in previous works. Regarding main operation parameters such as temperature and H2:CO2 molar ratio, the analysis confirmed that their influence on selectivities acts just as predicted at low conversions. However, when these conversions become higher the space velocity (WHSV) is the most important factor for selectivities. Finally, no significant changes in reaction performance were obtained when modifying the biogas CH4:CO2 ratio in the broad range of methane concentrations from 55 v% to 70 v%. |
| format | Article |
| id | doaj-art-e43b04a981c44788b673e680f7a63612 |
| institution | OA Journals |
| issn | 2212-9839 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of CO2 Utilization |
| spelling | doaj-art-e43b04a981c44788b673e680f7a636122025-08-20T01:57:19ZengElsevierJournal of CO2 Utilization2212-98392025-03-019310303810.1016/j.jcou.2025.103038Biogas upgrading through CO2 methanation in a multiple-inlet fixed bed reactor: Simulated parametric analysisP. Aragüés-Aldea0V.D. Mercader1P. Durán2E. Francés3J.Á. Peña4J. Herguido5Catalysis and Reactor Engineering Group (CREG) - Aragon Institute of Engineering Research (I3A), Universidad de Zaragoza, c/ Mariano Esquillor s/n, Zaragoza 50018, SpainCatalysis and Reactor Engineering Group (CREG) - Aragon Institute of Engineering Research (I3A), Universidad de Zaragoza, c/ Mariano Esquillor s/n, Zaragoza 50018, SpainCatalysis and Reactor Engineering Group (CREG) - Aragon Institute of Engineering Research (I3A), Universidad de Zaragoza, c/ Mariano Esquillor s/n, Zaragoza 50018, SpainCatalysis and Reactor Engineering Group (CREG) - Aragon Institute of Engineering Research (I3A), Universidad de Zaragoza, c/ Mariano Esquillor s/n, Zaragoza 50018, SpainCatalysis and Reactor Engineering Group (CREG) - Aragon Institute of Engineering Research (I3A), Universidad de Zaragoza, c/ Mariano Esquillor s/n, Zaragoza 50018, SpainCorresponding author.; Catalysis and Reactor Engineering Group (CREG) - Aragon Institute of Engineering Research (I3A), Universidad de Zaragoza, c/ Mariano Esquillor s/n, Zaragoza 50018, SpainA simulation of the catalytic CO2 methanation reaction was carried out, evaluating the effect of reactants distributed feeding throughout the bed. The main operational parameters were studied in a multiple-inlet reactor to test their effect on conversions and, most importantly, on selectivities towards both CO and CH4 as reaction products. The analyzed parameters were, firstly, the number of feeding points (N) and the dosage degree of reactants, followed by temperature (T), partial pressures of reactants (H2:CO2 ratios), and the composition of a sweetened biogas as feeding stream (CH4:CO2 ratios). It is confirmed that a distribution of biogas through several side inlets improves selectivities to the desired CH4 product, over other feeding configurations. The effect of distributing reactants becomes intensified when the number of lateral feedings increases. This observation supports the experimental trends already proven in previous works. Regarding main operation parameters such as temperature and H2:CO2 molar ratio, the analysis confirmed that their influence on selectivities acts just as predicted at low conversions. However, when these conversions become higher the space velocity (WHSV) is the most important factor for selectivities. Finally, no significant changes in reaction performance were obtained when modifying the biogas CH4:CO2 ratio in the broad range of methane concentrations from 55 v% to 70 v%.http://www.sciencedirect.com/science/article/pii/S2212982025000228Biogas upgradingDistributed feedingMethanationSynthetic natural gasRenewable hydrogen |
| spellingShingle | P. Aragüés-Aldea V.D. Mercader P. Durán E. Francés J.Á. Peña J. Herguido Biogas upgrading through CO2 methanation in a multiple-inlet fixed bed reactor: Simulated parametric analysis Journal of CO2 Utilization Biogas upgrading Distributed feeding Methanation Synthetic natural gas Renewable hydrogen |
| title | Biogas upgrading through CO2 methanation in a multiple-inlet fixed bed reactor: Simulated parametric analysis |
| title_full | Biogas upgrading through CO2 methanation in a multiple-inlet fixed bed reactor: Simulated parametric analysis |
| title_fullStr | Biogas upgrading through CO2 methanation in a multiple-inlet fixed bed reactor: Simulated parametric analysis |
| title_full_unstemmed | Biogas upgrading through CO2 methanation in a multiple-inlet fixed bed reactor: Simulated parametric analysis |
| title_short | Biogas upgrading through CO2 methanation in a multiple-inlet fixed bed reactor: Simulated parametric analysis |
| title_sort | biogas upgrading through co2 methanation in a multiple inlet fixed bed reactor simulated parametric analysis |
| topic | Biogas upgrading Distributed feeding Methanation Synthetic natural gas Renewable hydrogen |
| url | http://www.sciencedirect.com/science/article/pii/S2212982025000228 |
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