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Double-effect distillation and thermal integration applied to the ethanol production process

Author

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  • Palacios-Bereche, Reynaldo
  • Ensinas, Adriano V.
  • Modesto, Marcelo
  • Nebra, Silvia A.

Abstract

A double-effect distillation system allows a significant reduction in energy consumption, since the condensers and reboilers of different columns can be integrated thermally. To achieve this goal, some columns operate under a vacuum, while others operate close to atmospheric pressure. These pressure levels bring about different temperature levels, allowing energy recovery. Thus, the aim of this study is to assess the incorporation of double-effect distillation in ethanol production, and its impact on energy consumption and electricity surplus production in the cogeneration system. Moreover, because double-effect distillation and thermal integration involve an increase in equipment costs, an economic assessment was done. Several cases were evaluated and a thermal integration technique was applied, in order to integrate the overall process. The thermal integration study showed that it is possible to integrate the juice concentration step (multiple effect evaporation system) in the overall process without additional thermal consumption, through the selection of a suitable set of pressures in the evaporation system. The results showed a reduction in steam consumption of between 17% and 54%, in comparison with the Base Case. Regarding the electricity surplus, this increased by up to 22% when extraction–condensing steam turbines were adopted.

Suggested Citation

  • Palacios-Bereche, Reynaldo & Ensinas, Adriano V. & Modesto, Marcelo & Nebra, Silvia A., 2015. "Double-effect distillation and thermal integration applied to the ethanol production process," Energy, Elsevier, vol. 82(C), pages 512-523.
    • Handle: RePEc:eee:energy:v:82:y:2015:i:c:p:512-523
    DOI: 10.1016/j.energy.2015.01.062
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    References listed on IDEAS

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    1. Palacios-Bereche, Reynaldo & Mosqueira-Salazar, Klever Joao & Modesto, Marcelo & Ensinas, Adriano V. & Nebra, Silvia A. & Serra, Luis M. & Lozano, Miguel-Angel, 2013. "Exergetic analysis of the integrated first- and second-generation ethanol production from sugarcane," Energy, Elsevier, vol. 62(C), pages 46-61.
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    3. Palacios-Bereche, Reynaldo & Ensinas, Adriano & Modesto, Marcelo & Nebra, Silvia A., 2014. "New alternatives for the fermentation process in the ethanol production from sugarcane: Extractive and low temperature fermentation," Energy, Elsevier, vol. 70(C), pages 595-604.
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    2. Smith Lewin, Caroline & Fonseca de Aguiar Martins, Ana Rosa & Pradelle, Florian, 2020. "Modelling, simulation and optimization of a solid residues downdraft gasifier: Application to the co-gasification of municipal solid waste and sugarcane bagasse," Energy, Elsevier, vol. 210(C).
    3. Cortes-Rodríguez, Edgar Fernando & Fukushima, Nilton Asao & Palacios-Bereche, Reynaldo & Ensinas, Adriano V. & Nebra, Silvia A., 2018. "Vinasse concentration and juice evaporation system integrated to the conventional ethanol production process from sugarcane – Heat integration and impacts in cogeneration system," Renewable Energy, Elsevier, vol. 115(C), pages 474-488.
    4. You, Xinqiang & Rodriguez-Donis, Ivonne & Gerbaud, Vincent, 2016. "Reducing process cost and CO2 emissions for extractive distillation by double-effect heat integration and mechanical heat pump," Applied Energy, Elsevier, vol. 166(C), pages 128-140.
    5. Pina, Eduardo A. & Palacios-Bereche, Reynaldo & Chavez-Rodriguez, Mauro F. & Ensinas, Adriano V. & Modesto, Marcelo & Nebra, Silvia A., 2017. "Reduction of process steam demand and water-usage through heat integration in sugar and ethanol production from sugarcane – Evaluation of different plant configurations," Energy, Elsevier, vol. 138(C), pages 1263-1280.
    6. Taner, Tolga & Sivrioglu, Mecit, 2015. "Energy–exergy analysis and optimisation of a model sugar factory in Turkey," Energy, Elsevier, vol. 93(P1), pages 641-654.
    7. Milão, Raquel de Freitas D. & Araújo, Ofélia de Queiroz F. & de Medeiros, José Luiz, 2021. "Second Law analysis of large-scale sugarcane-ethanol biorefineries with alternative distillation schemes: Bioenergy carbon capture scenario," Renewable and Sustainable Energy Reviews, Elsevier, vol. 135(C).
    8. Leon, Juan A. & Palacios-Bereche, Reynaldo & Nebra, Silvia A., 2016. "Batch pervaporative fermentation with coupled membrane and its influence on energy consumption in permeate recovery and distillation stage," Energy, Elsevier, vol. 109(C), pages 77-91.
    9. Yang, Deming & Wan, Dehao & Yun, Yi & Yang, Shuzhuang, 2023. "Energy-saving distillation process for mixed trichlorobenzene based on ORC coupled MVR heat pump technology," Energy, Elsevier, vol. 262(PB).
    10. Bechara, Rami & Gomez, Adrien & Saint-Antonin, Valérie & Schweitzer, Jean-Marc & Maréchal, François & Ensinas, Adriano, 2018. "Review of design works for the conversion of sugarcane to first and second-generation ethanol and electricity," Renewable and Sustainable Energy Reviews, Elsevier, vol. 91(C), pages 152-164.
    11. Cui, Chengtian & Qi, Meng & Zhang, Xiaodong & Sun, Jinsheng & Li, Qing & Kiss, Anton A. & Wong, David Shan-Hill & Masuku, Cornelius M. & Lee, Moonyong, 2024. "Electrification of distillation for decarbonization: An overview and perspective," Renewable and Sustainable Energy Reviews, Elsevier, vol. 199(C).
    12. Botshekan, Maryam & Moheb, Ahmad & Vatankhah, Fatemeh & Karimi, Keikhosro & Shafiei, Marzieh, 2022. "Energy saving alternatives for renewable ethanol production with the focus on separation/purification units: A techno-economic analysis," Energy, Elsevier, vol. 239(PE).
    13. Bechara, Rami & Gomez, Adrien & Saint-Antonin, Valérie & Schweitzer, Jean-Marc & Maréchal, François, 2016. "Methodology for the design and comparison of optimal production configurations of first and first and second generation ethanol with power," Applied Energy, Elsevier, vol. 184(C), pages 247-265.
    14. Palacios-Bereche, M.C. & Palacios-Bereche, R. & Ensinas, A.V. & Gallego, A. Garrido & Modesto, Marcelo & Nebra, S.A., 2022. "Brazilian sugar cane industry – A survey on future improvements in the process energy management," Energy, Elsevier, vol. 259(C).
    15. Carminati, Hudson Bolsoni & Milão, Raquel de Freitas D. & de Medeiros, José Luiz & Araújo, Ofélia de Queiroz F., 2019. "Bioenergy and full carbon dioxide sinking in sugarcane-biorefinery with post-combustion capture and storage: Techno-economic feasibility," Applied Energy, Elsevier, vol. 254(C).
    16. Bahlouli, Keyvan & Khoshbakhti Saray, Rahim, 2016. "Energetic and exergetic analyses of a new energy system for heating and power production purposes," Energy, Elsevier, vol. 106(C), pages 390-399.

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