Abstract
Over the last 500 years, the Brazilian sugarcane industry has evolved from a single product supplier (sugar producer) to an energy enterprise (sugar, alcohol and electricity). Different technological paths were developed in order to improve the energy conversion processes inside the mill. These improvements led mills to first become self-sufficient in energy, and then, sell electricity to the grid. The utilities plant developed were typical steam-based cogeneration systems, using bagasse to produce steam and electricity required by the sugar and alcohol production processes. Hence, considering the mill as a whole, it became a polygeneration plant, using sugarcane to produce sugar, alcohol, and electricity. Yet, many by-products are available (trash, vinasse, filter cake, etc.), and most of them are discarded or used in an inefficient way. This chapter compares, in an exergy basis, current technological paths used in sugarcane mills, with new ones, which can lead to a more renewable use of energy and the by-products of the processes. These technologies aim at converting these low valued by-products into new added value ones. Such technologies include: more efficient steam cycles (such as high pressure and supercritical steam ones) and biomass gasification-based combined cycles.
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Abbreviations
- λ:
-
Renewability exergy index
- cogeneration:
-
Cogeneration system
- mill:
-
Related to the mill
- BIGCC:
-
Biomass integrated gasification combined cycle
- BPST:
-
Back pressure steam turbine
- CEST:
-
Condensing-extraction steam turbine
- HRSG:
-
Heat recovery steam generator
- LHV:
-
Lower heating value
- SuSC:
-
Supercritical steam cycle
- Trad:
-
Tradition mill
References
Vian CEF (2003) Sugarcane agroindustry: competitive strategies and modernization. Átomo, Campinas
ANEEL (2009) Power generation database. In: Electric energy national agency. Available via DIALOG. http://www.aneel.gov.br/aplicacoes/capacidadebrasil/capacidadebrasil.asp. Cited 2009
Vertiola SR, Oliveira S Jr (1994) Thermoeconomic analysis of the steam cycle of a Brazilian medium-sized sugar and alcohol mill. In: Proceedings of XI international symposium on alcohol fuels, Sun City
Palacios JCE, Lora EES, Venturini OJ et al (2009) Thermodynamic and thermoeconomic evaluation of different technologies and steam parameters for plant modernization alternatives in an autonomous distillery. In: Proceedings of the 22nd international conference on efficiency, costs, optimization, simulation and environmental impact of energy systems, Foz de Iguaçú
Barreda del Campo ER, Cerqueira SAAG, Nebra SA (1998) Thermoeconomic analysis of a cuban sugar cane mill. Energy Convers Manag 39:1773–1780
Prieto MGS, Nebra SA (2004) Thermodynamic and exergetic cost analysis of two steam based cogeneration schemes proposed for a Brazilian sugar mill. In: Proceedings of the 17th international conference on efficiency, costs, optimization, simulation and environmental impact of energy systems, Mexico City
Ensinas AV, Nebra SA, Lozano MA et al (2007) Analysis of process steam demand reduction and electricity generation in sugar and ethanol production from sugarcane. Energy 48:2978–2987
Ensinas AV, Modesto M, Nebra SA (2007) Analysis of different cane juice extraction systems for sugar and ethanol production: influences on electricity generation and final products exergetic costs. In: Proceedings of the 20th international conference on efficiency, costs, optimization, simulation and environmental impact of energy systems, Padova
Pellegrini LF, Oliveira S Jr (2007) Exergy analysis of sugarcane bagasse gasification. Energy 32:314–327
Pellegrini LF, Oliveira S Jr (2007) Exergy efficiency of the combined sugar, ethanol and electricity production and its dependence of the exergy optimization of the utilities plants. In: Proceedings of the 20th international conference on efficiency, costs, optimization, simulation and environmental impact of energy systems, Padova
Palacios-Bereche R, Pereira PA, Nebra SA et al (2009) Energetic evaluation of cogeneration systems in sugar cane plants in Brazil case studies. In: Proceedings of the 22nd international conference on efficiency, costs, optimization, simulation and environmental impact of energy systems, Foz de Iguaçú
Ogden JM, Hochgreb S, Hylton M (1990) Steam economy and cogeneration in cane sugar factories. Int Sugar J 92:131–140
Larson ED, Williams RH, Leal MRLV (2001) A review of biomass integrated-gasifier/gas turbine combined cycle technology and its application in sugarcane industries, with an analysis for Cuba. Energy Sust Dev 5:54–75
Walter A, Overend RP (1998) Analysis of BIG-GT cycles in the sugarcane industry. In: Proceedings of the 10th biomass European congress, Wurzburg
Beér JM (2007) High efficiency electric power generation: the environmental role. Energy 33:107–134
Pellegrini LF, Oliveira S Jr, Burbano JC (2010) Supercritical steam cycles and biomass integrated gasification combined cycles for sugarcane mills. Energy 35:1172–1180
Camargo AC (1990) Energy conservation in the sugar and ethanol industry. In: Camargo AC (ed) Handbook for energy conservation in the sugar and ethanol industry. Instituto de Pesquisas Tecnológicas, São Paulo (in Portuguese)
Hugot E (1986) Handbook of cane sugar engineering. Elsevier, Amsterdan
Payne JH (1989) Unit operations in the production of cane sugar. Nobel/STAB, São Paulo
Avram P, Stark T (2004) Integration of ethanol production with a sugar factory producing maximum cogeneration. Int Sugar J 106:126–137
Christodoulou P (1996) Energy economy optimization in the separation processes: optimizing the separation of sucrose/water and non-sugars. Int Sugar J 98:419–430
Morgenroth B (1996) Experiences with the falling film plate evaporator––latest state in the development of evaporation technology as well as concepts for energy efficient process schemes in the cane sugar industry. In: International sugar symposium, Luxor
Seemann F (2003) Energy reduction in distillation for bioethanol plants. Int Sugar J 105:420–423
Nebra SA, Parra MIF (2005) The exergy of sucrose–water solutions: proposal of a calculation method. In: Proceedings of the 18th international conference on efficiency, costs, optimization, simulation and environmental impact of energy systems, Trondheim
Modesto M, Nebra SA, Zemp RJ (2005) A proposal to calculate the exergy of non-ideal mixtures ethanol–water using properties of excess. In: Proceedings of the 14th European biomass conference and exhibition: biomass for energy industry and climate protection, Paris
Channiwala AS, Parikh PP (2002) A unified correlation for estimating HHV of solids, liquid and gaseous fuels. Fuel 81:1051–1063
Szargut J, David RM, Steward F (1988) Exergy analysis of thermal, chemical, and metallurgical processes. Hemisphere Publishing, New York
Pellegrini LF, Oliveira S Jr (2011) Combined production of sugar, ethanol and electricity: thermoeconomic and environmental analysis and optimization. Energy 36:3704–3715
Pellegrini LF, Modesto M, Nebra SA et al (2008) Modern concept for ethanol distilleries: maximization of the electricity surplus. In: Proceedings of the 12th Brazilian congress of thermal sciences and engineering, Belo Horizonte
Lozano MA, Valero A (1993) Theory of the exergetic cost. Energy 18:939–960
Gaggioli RA, Wepfer WJ (1980) Exergy economics: I. cost accounting applications, II. benefit-cost conservation. Energy 5:823–837
Florentino HO, Sartori MMP (2003) Game theory in sugarcane crop residue. Biomass Bioenerg 25:29–34
Klein SA (2011) Engineering equation solver––EES, F-chart software. www.fChart.com
Magazoni FC, Monteiro JB, Deucher R et al (2009) Cooling of ethanol fermentation process using absorption chillers. In: Proceedings of the 22nd international conference on efficiency, costs, optimization, simulation and environmental impact of energy systems, Foz de Iguaçú
Kargupta K, Datta S, Sanyal SK (1998) Analysis of the performance of a continuous membrane bioreactor with cell recycling during ethanol fermentation. Biochem Eng J 1:31–37
Sorin M, Ayotte-Sauvé E, Sadeghi F et al (2009) Thermodynamic equipartition and energy efficient membrane networks. In: Proceedings of the 22nd international conference on efficiency, costs, optimization, simulation and environmental impact of energy systems, Foz de Iguaçú
Cordona CA, Sanchez OJ (2007) Fuel ethanol production––process design trends and integration opportunities. Bioresource Technol 98:2415–2457
Haelssig JB, Tremblay AY, Thibault J (2008) Technical and economic considerations for various recovery schemes in ethanol production by fermentation. Ind Eng Chem Res 47:6185–6191
Morgenroth B, Batstone D (2005) Development and prospects for drying bagasse by steam. Int Sugar J 107:410–415
Rein P (2007) Cane sugar engineering. Verlag Dr. Albert Bartens, Berlin
Walter A (2000) Simulation of gas turbines operating in off-design condition. In: Proceedings of the 13th international conference on efficiency, costs, optimization, simulation and environmental impact of energy systems, Enschede
Zanetti AA, Pellegrini LF, Oliveira S Jr (2007) Thermoeconomic analysis of a BIGCC cogeneration system using natural gas and sugarcane bagasse as complementary fuels. In: The 20th international conference on efficiency, costs, optimization, simulation and environmental impact of energy systems, Padova
Hirschey M (2005) Fundamentals of managerial economics. South-Western College Publishing, Mason
Pellegrini LF (2009) Analysis and thermo-economic and environmental optimization applied to the combined production of sugar, alcohol and electricity. Ph.D. Thesis, Polytechnic School of the University of São Paulo, São Paulo
National Supply Company––CONAB (2011) Third assessment of the sugarcane harvesting. http://www.conab.gov.br/OlalaCMS/uploads/arquivos/11_01_06_09_14_50_boletim_cana_3o_lev_safra_2010_2011..pdf
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de Oliveira , S. (2013). Exergy Analysis and Parametric Improvement of the Combined Production of Sugar, Ethanol, and Electricity. In: Exergy. Green Energy and Technology. Springer, London. https://doi.org/10.1007/978-1-4471-4165-5_6
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