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Reduction of irreversibility generation in sugar and ethanol production from sugarcane

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  • Ensinas, A.V.
  • Modesto, M.
  • Nebra, S.A.
  • Serra, L.

Abstract

Sugarcane is one of the most important industries of the Brazilian economy, and its main products are sugar and ethanol. Most of the industrial plants produce both products in an integrated process, in which the sugarcane bagasse is a by-product that can be used as a fuel in the cogeneration system. The bagasse is used as the only fuel of the plant, supplying all energy required for the process, and also producing electricity surplus that may be sold to the grid. In this paper, exergy analysis is used to assess an integrated sugar and ethanol plant with its cogeneration system. The plant was divided into eight sub-systems to evaluate the irreversibility generation in each separately. Data from typical sugarcane factories in Brazil, which produce sugar and ethanol, were used in the process simulation. The analysis has shown that the sub-systems with the highest contribution for the total irreversibility generation of the plant were co-generation, juice extraction and fermentation. Some improvements are proposed, including process thermal integration and the introduction of more efficient equipments for prime mover and steam and electricity generation. The analysis indicated that the total irreversibility could be reduced by 10% should those changes be implemented.

Suggested Citation

  • Ensinas, A.V. & Modesto, M. & Nebra, S.A. & Serra, L., 2009. "Reduction of irreversibility generation in sugar and ethanol production from sugarcane," Energy, Elsevier, vol. 34(5), pages 680-688.
    • Handle: RePEc:eee:energy:v:34:y:2009:i:5:p:680-688
    DOI: 10.1016/j.energy.2008.06.001
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    References listed on IDEAS

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    1. Lozano, M.A. & Valero, A., 1993. "Theory of the exergetic cost," Energy, Elsevier, vol. 18(9), pages 939-960.
    2. Tekin, Taner & Bayramoǧlu, Mahmut, 2001. "Exergy and structural analysis of raw juice production and steam-power units of a sugar production plant," Energy, Elsevier, vol. 26(3), pages 287-297.
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    1. Siwal, Samarjeet Singh & Zhang, Qibo & Devi, Nishu & Saini, Adesh Kumar & Saini, Vipin & Pareek, Bhawna & Gaidukovs, Sergejs & Thakur, Vijay Kumar, 2021. "Recovery processes of sustainable energy using different biomass and wastes," Renewable and Sustainable Energy Reviews, Elsevier, vol. 150(C).
    2. Alves, Moises & Ponce, Gustavo H.S.F. & Silva, Maria Aparecida & Ensinas, Adriano V., 2015. "Surplus electricity production in sugarcane mills using residual bagasse and straw as fuel," Energy, Elsevier, vol. 91(C), pages 751-757.
    3. Santos, V.E.N. & Ely, R.N. & Szklo, A.S. & Magrini, A., 2016. "Chemicals, electricity and fuels from biorefineries processing Brazil׳s sugarcane bagasse: Production recipes and minimum selling prices," Renewable and Sustainable Energy Reviews, Elsevier, vol. 53(C), pages 1443-1458.
    4. Dias, Marina O.S. & Junqueira, Tassia L. & Jesus, Charles D.F. & Rossell, Carlos E.V. & Maciel Filho, Rubens & Bonomi, Antonio, 2012. "Improving second generation ethanol production through optimization of first generation production process from sugarcane," Energy, Elsevier, vol. 43(1), pages 246-252.
    5. Velásquez-Arredondo, H.I. & Ruiz-Colorado, A.A. & De Oliveira, S., 2010. "Ethanol production process from banana fruit and its lignocellulosic residues: Energy analysis," Energy, Elsevier, vol. 35(7), pages 3081-3087.
    6. Chauhan, Bhupendra Singh & Kumar, Naveen & Pal, Shyam Sunder & Du Jun, Yong, 2011. "Experimental studies on fumigation of ethanol in a small capacity Diesel engine," Energy, Elsevier, vol. 36(2), pages 1030-1038.
    7. Milão, Raquel de Freitas Dias & Carminati, Hudson B. & Araújo, Ofélia de Queiroz F. & de Medeiros, José Luiz, 2019. "Thermodynamic, financial and resource assessments of a large-scale sugarcane-biorefinery: Prelude of full bioenergy carbon capture and storage scenario," Renewable and Sustainable Energy Reviews, Elsevier, vol. 113(C), pages 1-1.
    8. 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).
    9. João Paulo Guerra & Fernando Henrique Cardoso & Alex Nogueira & Luiz Kulay, 2018. "Thermodynamic and Environmental Analysis of Scaling up Cogeneration Units Driven by Sugarcane Biomass to Enhance Power Exports," Energies, MDPI, vol. 11(1), pages 1-23, January.
    10. 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).
    11. Dogbe, Eunice Sefakor & Mandegari, Mohsen A. & Görgens, Johann F., 2018. "Exergetic diagnosis and performance analysis of a typical sugar mill based on Aspen Plus® simulation of the process," Energy, Elsevier, vol. 145(C), pages 614-625.
    12. 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.
    13. 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).
    14. Aghbashlo, Mortaza & Tabatabaei, Meisam & Karimi, Keikhosro, 2016. "Exergy-based sustainability assessment of ethanol production via Mucor indicus from fructose, glucose, sucrose, and molasses," Energy, Elsevier, vol. 98(C), pages 240-252.
    15. Morandin, Matteo & Toffolo, Andrea & Lazzaretto, Andrea & Maréchal, François & Ensinas, Adriano V. & Nebra, Silvia A., 2011. "Synthesis and parameter optimization of a combined sugar and ethanol production process integrated with a CHP system," Energy, Elsevier, vol. 36(6), pages 3675-3690.
    16. Fukushima, Nilton Asao & Palacios-Bereche, Milagros Cecilia & Palacios-Bereche, Reynaldo & Nebra, Silvia Azucena, 2019. "Energy analysis of the ethanol industry considering vinasse concentration and incineration," Renewable Energy, Elsevier, vol. 142(C), pages 96-109.
    17. Vasconcelos, Marcelo Holanda & Mendes, Fernanda Machado & Ramos, Lucas & Dias, Marina Oliveira S. & Bonomi, Antonio & Jesus, Charles Dayan F. & Watanabe, Marcos Djun B. & Junqueira, Tassia Lopes & Mil, 2020. "Techno-economic assessment of bioenergy and biofuel production in integrated sugarcane biorefinery: Identification of technological bottlenecks and economic feasibility of dilute acid pretreatment," Energy, Elsevier, vol. 199(C).

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