Exergy efficiency of thermochemical syngas-to-ethanol production plants

This work presents exergy analyses applied in four different conceptual second-generation ethanol production processes through a thermochemical route using catalysts based on Molybdenum (P-1), Copper (P-2), and Rhodium (P-3 and P-4), aiming to assess their exergetic efficiencies. The results show th...

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Bibliographic Details
Published in:SN applied sciences 2021-05, Vol.3 (5), p.534-13, Article 534
Main Authors: e Silva, Marcos Paulo Gabriel da Costa, Miranda, Júlio Cesar de Carvalho
Format: Article
Language:English
Subjects:
Alternative energy sources
Applied and Technical Physics
Biodiesel fuels
Catalysts
Chemistry/Food Science
Earth Sciences
Engineering
Engineering: Biofuels
Environment
Environmental impact
Ethanol
Exergy
Exothermic reactions
Materials Science
Molybdenum
Research Article
Rhodium
Syngas
Synthesis gas
Thermochemical
Thermodynamics
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Summary:This work presents exergy analyses applied in four different conceptual second-generation ethanol production processes through a thermochemical route using catalysts based on Molybdenum (P-1), Copper (P-2), and Rhodium (P-3 and P-4), aiming to assess their exergetic efficiencies. The results show that the conceptual processes have satisfactory exergy efficiencies in both cases, when compared among themselves and when compared with other processes reported in literature. The processes’ efficiency for P-1, P-2, P-3 and P-4 were, respectively, 52.4%, 41.4%, 43.7% and 48.9%. The reactors were the sections in which exergy destruction was more significant, due to the exothermic reactions and mixing points (where streams with different temperatures were mixed). Such results show the potential of thermochemical ethanol production, besides opening the possibilities of process improvement. Graphic abstract
ISSN:2523-3963
2523-3971
DOI:10.1007/s42452-021-04526-3