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001049754 037__ $$aFZJ-2025-05538
001049754 1001_ $$0P:(DE-Juel1)198866$$aJerome, Gbenga$$b0$$eCorresponding author$$ufzj
001049754 1112_ $$aInternational Conference on Circular Economy, Renewable Energies and Green Hydrogen in Africa$$cWindhoek$$d2025-10-21 - 2025-10-25$$gICERA$$wNamibia
001049754 245__ $$aDryHy: Process analysis and optimization of high temperature solid oxide co-electrolysis coupled with direct air capture for sustainable air-derived methanol
001049754 260__ $$c2025
001049754 3367_ $$033$$2EndNote$$aConference Paper
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001049754 3367_ $$0PUB:(DE-HGF)6$$2PUB:(DE-HGF)$$aConference Presentation$$bconf$$mconf$$s1765991581_10803$$xAfter Call
001049754 520__ $$aAddressing the increasing CO2 emissions contributing to global climate change requires more than the transition to the use of renewable electricity. As the chemical and heavy-duty transport sectors remain dependent on carbon-based inputs, alternative fossil-free production pathways are essential. Green methanol produced from renewable sources offers a promising pathway toward a carbon-neutral economy. This approach not only facilitates the storage of excess renewable power but also offers the potential of recycling carbon dioxide. Sustainable production of green methanol requires the availability of renewable resources, negative CO2 feedstock and hydrogen sources like water. However, the geographic mismatch between renewable electricity potential and freshwater availability poses a significant challenge for green methanol production. Regions around the subtropics, which include most of Africa, offer high solar potential but often face limited freshwater availability. Therefore, it is crucial to produce green methanol using processes that avoid competition with freshwater resources. In the “DryHy” project, a process technology is developed to overcome this challenge. By combining direct air capture, which extracts water and carbon dioxide from the atmosphere, with a Solid Oxide Electrolysis (SOE) system powered by renewably generated electricity, syngas can be produced as a key intermediate for methanol synthesis. To assess the performance of this process technology, a SOE system model capable of simulating operation in co-electrolysis mode has been developed and optimized in Aspen Plus. Two different system designs were investigated, each utilizing different strategies of avoiding undesired carbon deposition: a low utilization and a high utilization design. Four key objectives were considered in the multi-objective optimization study: stoichiometric number, carbon oxide ratio, inlet water-to-carbon dioxide ratio and energy efficiency related to syngas composition and the SOE system design. The trade-offs between these objectives are analyzed to optimize the operation and performance of SOE systems in co-electrolysis mode. A comparison of the two system designs reveals that the high utilization design consistently outperforms the low utilization design for the considered objectives. In addition, a significant difference is observed in the inlet water-to-carbon dioxide ratio required to achieve the stoichiometric number needed for methanol synthesis. Subsequently, the SOE system model will be integrated with mathematical models of the direct air capture system and the methanol reactor to assess the performance and efficiency of the overall system. The comprehensive analysis of the overall air-derived methanol process will provide insight into important relationships such as how variable product gas composition from the direct air capture system affects SOE system performance and subsequently methanol production. Moreover, insights will be gained into how different system configurations and heat integration strategies can further enhance the air-derived methanol process.
001049754 536__ $$0G:(DE-HGF)POF4-1232$$a1232 - Power-based Fuels and Chemicals (POF4-123)$$cPOF4-123$$fPOF IV$$x0
001049754 536__ $$0G:(DE-Juel1)BMBF-03SF0716$$aBMBF-03SF0716A - Verbundvorhaben DryHy: Wasserbewusste Erzeugung von Wasserstoff und e-Fuels in trockenen Regionen (Phase 1), Teilvorhaben: Vorbereitung der Demonstationsphase durch Untersuchung und Entwicklung der Einzeltechnologien (BMBF-03SF0716)$$cBMBF-03SF0716$$x1
001049754 536__ $$0G:(DE-Juel1)HITEC-20170406$$aHITEC - Helmholtz Interdisciplinary Doctoral Training in Energy and Climate Research (HITEC) (HITEC-20170406)$$cHITEC-20170406$$x2
001049754 7001_ $$0P:(DE-Juel1)209614$$aDam, An Phuc$$b1$$ufzj
001049754 7001_ $$0P:(DE-Juel1)201445$$aDirkes, Steffen$$b2$$ufzj
001049754 7001_ $$0P:(DE-Juel1)178824$$aSelmert, Victor$$b3$$ufzj
001049754 7001_ $$0P:(DE-Juel1)207065$$aSamsun, Remzi Can$$b4$$ufzj
001049754 7001_ $$0P:(DE-Juel1)156123$$aEichel, Rüdiger-A.$$b5$$ufzj
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001049754 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)209614$$aForschungszentrum Jülich$$b1$$kFZJ
001049754 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)201445$$aForschungszentrum Jülich$$b2$$kFZJ
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001049754 9131_ $$0G:(DE-HGF)POF4-123$$1G:(DE-HGF)POF4-120$$2G:(DE-HGF)POF4-100$$3G:(DE-HGF)POF4$$4G:(DE-HGF)POF$$9G:(DE-HGF)POF4-1232$$aDE-HGF$$bForschungsbereich Energie$$lMaterialien und Technologien für die Energiewende (MTET)$$vChemische Energieträger$$x0
001049754 9141_ $$y2025
001049754 920__ $$lyes
001049754 9201_ $$0I:(DE-Juel1)IET-1-20110218$$kIET-1$$lGrundlagen der Elektrochemie$$x0
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