Surplus electricity production in sugarcane mills using residual bagasse and straw as fuel

Alves, Marília; Ponce, Gustavo; Silva, Maria Aparecida da; Ensinas, Adriano V.

doi:10.1016/j.energy.2015.08.101

Cited by 61 publications

(54 citation statements)

References 6 publications

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“…Steam‐based sugarcane mills can be found in countries like Cuba and Brazil, which utilizes two types of steam turbines for low pressure steam and electricity production: Condensing Extraction Steam Turbine (CEST) and Backpressure Steam Turbine (BPST) . CEST are high‐pressure turbines used in sugar factories that are favored for pressure levels above 65 bar .…”

Section: Biomass To Biopowermentioning

confidence: 99%

“…BPST, on the other hand, are non‐condensing turbines, commonly found in refineries, in which exhaust steam at lower pressure loads and are usually cheaper than condensing turbines. BPST could generate up to 99.51 kWh per ton cane and fulfill electricity demand at the mills, while CEST could generate 121 kWh per ton cane, meet the energy demand at the mills and would export the surplus electricity, approximately 93 KWh per ton cane for public use (Table ) . Alves et al .…”

Section: Biomass To Biopowermentioning

confidence: 99%

See 1 more Smart Citation

A review of sugarcane bagasse for second‐generation bioethanol and biopower production

Bezerra

Ragauskas

2016

Biofuels Bioprod Bioref

218

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Sugarcane bagasse is a large-volume agriculture residue that is generated on a ~540 million metric tons per year basis globally 1,2 with the top-three producing countries in Latin America being Brazil (~181 million metric ton yr −1 ), 3 Mexico (~15 million metric ton yr −1 ), 4 and Colombia (~7 million metric ton yr −1 ), 5 respectively. 6 Given sustainability concerns and the need to maximize the utilization of bioresources, the use of sugarcane bagasse is receiving signifi cant attention in biorefi ning applications, as it is a promising resource for the conversion to biofuels and biopower. This review provides a comprehensive review of bagasse and its chemical constituents and on-going research into its utilization as a feedstock for cellulosic ethanol and electricity generation.

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Section: Biomass To Biopowermentioning

confidence: 99%

Section: Biomass To Biopowermentioning

confidence: 99%

A review of sugarcane bagasse for second‐generation bioethanol and biopower production

Bezerra

Ragauskas

2016

Biofuels Bioprod Bioref

218

View full text Add to dashboard Cite

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“…The sector has expanded since the international market opened to this fuel and mechanisms to commercialize surplus electricity for the production network have been created [1,2]. As a result, the companies of the internal sugar-alcohol sector have been seeking to raise competitiveness by improving agricultural productivity and industrial income, and by reducing losses along the production chain.…”

Section: Introductionmentioning

confidence: 99%

“…No longer merely a complementary source of ethanol production, these sources of biomass are used in the cogeneration cycles, with the purpose of increasing the supply of electric energy and then exporting it to the grid [1,3]. An expressive trend of expansion in this field is expected in the next few years.…”

Section: Introductionmentioning

confidence: 99%

“…An expressive trend of expansion in this field is expected in the next few years. This is because: (i) Brazil still falls short of fully exploring its energy potential in sugarcane biomass [1,4,5]; (ii) the installed capacity for cogeneration from biomass is 143 GW, representing 9.3% of the domestic energy supply in 2014, and the national commitment is to increase this contribution to 23% by 2030 [6]; (iii) the country has signed international agreements aimed at sustainable development and positive aspects of cogeneration through biomass, but their surveys are narrowed to the use of bagasse as the only energy source.…”

Section: Introductionmentioning

confidence: 99%

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Thermodynamic and Environmental Analysis of Scaling up Cogeneration Units Driven by Sugarcane Biomass to Enhance Power Exports

et al. 2018

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When manual harvesting of sugarcane was discontinued in many regions of Brazil, interest in power generation by burning the bagasse and straw in cogeneration units rose. Exergy analysis is often applied to increase the thermodynamic yield of these plants by identifying irreversibility and work availability. Conversely, pressure for adopting clean energy requires these systems to be evaluated for suitable environmental performance. This study identified and discussed the thermodynamic and environmental effects of scaling up systems that operate according Rankine cycle with reheating. Ten scenarios have been designed considering different levels of steam pressure and addition rates of straw remaining in the sugarcane cultivation. The thermodynamic analysis revealed a 37% improvement in the exergy efficiency and 63% of increasing in power generation to raise the steam pressure from 20 to 100 bar. Moreover, the use of 50% of residual straw into units operating at 100 bar can more than double the amount of electricity exported. If addressed considering a life cycle perspective, the use of straw improves the environmental performance of the cogeneration for Climate Change and Particle Matter Formation but provides additional impacts in terms of Water and Fossil resources depletions.

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Assessment of socioeconomic impacts, emissions and share potential of the sugar‐energy sector in the Brazilian electricity matrix, in the context of NDC, applying a bottom‐up approach and input–output modeling

Neto

Cunha

Guilhoto

2021

Biofuels Bioprod Bioref

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This work presents an assessment of sugar‐energy sector expansion in Brazil, focusing on the growth of the bioelectricity supply and considering two scenarios. The first scenario, called the BASE scenario, was based on the projection made by the Brazilian Energy Research Company (EPE) for the Brazilian commitments at the Paris agreement, presented during the COP 21 (Conference of the parties) conference and ratified in the Nationally Determined Contributions (NDC), assuming that all the electricity from biomass could be produced by the sugarcane sector. The second is a scenario considering a higher share of the sugar‐energy sector in the Brazilian electricity matrix, called the BIO scenario. The investment needed for each scenario was evaluated, using a bottom‐up approach and assuming currently available technologies. The results showed that the BIO scenario could produce 55 TWh of surplus electricity more than the BASE scenario, boosting the share of the sugar‐energy sector in the electricity matrix, reaching a total of almost 130 TWh per year and requiring an additional investment that was 39% higher than in the BASE scenario. As the sugarcane surplus electricity could replace electricity from natural gas power plants, the BIO scenario could reduce emissions by 18.4 MtCO2eq in comparison with the BASE scenario. Through the input–output model used to evaluate the socioeconomic impacts, it was observed that the BIO scenario could add 919 000 job positions and cause a positive impact to the gross domestic product (GDP) of US$ 28.8 billion, which corresponds, in comparison with the BASE scenario, to adding 83 000 more job positions, and provides a 12.5% higher contribution to GDP. The total output was 8.6% higher in the BIO scenario in comparison with the BASE scenario. All of these analyses were carried out for three selected regions in the country: the traditional region, comprising São Paulo and Paraná states; the expansion region, including Goiás, Minas Gerais, Mato Grosso and Mato Grosso do Sul states; and the rest of Brazil region. A spillover effect was observed over the total output in the Rest of Brazil region, showing that the impact of the investment over this region was proportionally higher in comparison to the investment done in other in other regions. The Rest of Brazil Region also presents a higher share of the indireect effects over the GDP, jobs created and total output. The final results of this research show the potential of the sugar‐energy sector to boost electricity generation, which can contribute to the reduction of greenhouse gas (GHG) emissions, and to preserving the share of renewable sources in the Brazilian electricity matrix and increasing energy security and generation closer to the biggest centers of consumption, mitigating challenges for electricity transmission between subsystems in the National Interconnected System (SIN). © 2021 Society of Industrial Chemistry and John Wiley & Sons Ltd.

show abstract

Surplus electricity production in sugarcane mills using residual bagasse and straw as fuel

Cited by 61 publications

References 6 publications

A review of sugarcane bagasse for second‐generation bioethanol and biopower production

A review of sugarcane bagasse for second‐generation bioethanol and biopower production

Thermodynamic and Environmental Analysis of Scaling up Cogeneration Units Driven by Sugarcane Biomass to Enhance Power Exports

Assessment of socioeconomic impacts, emissions and share potential of the sugar‐energy sector in the Brazilian electricity matrix, in the context of NDC, applying a bottom‐up approach and input–output modeling

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