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Exergy efficiency of thermochemical syngas-to-ethanol production plants

Authors
  • e Silva, Marcos Paulo Gabriel da Costa1
  • Miranda, Júlio Cesar de Carvalho1
  • 1 Federal University of Mato Grosso, Cuiabá, MT, Zip code: 78060-900, Brazil , Cuiabá (Brazil)
Type
Published Article
Journal
SN Applied Sciences
Publisher
Springer International Publishing
Publication Date
Apr 06, 2021
Volume
3
Issue
5
Identifiers
DOI: 10.1007/s42452-021-04526-3
Source
Springer Nature
Keywords
License
Green

Abstract

AbstractThis 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

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