Combined production of sugar, ethanol and electricity: Thermoeconomic and environmental analysis and optimization

Pellegrini, Luiz Felipe; Oliveira, Silvio de

doi:10.1016/j.energy.2010.08.011

Cited by 92 publications

(63 citation statements)

References 13 publications

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“…In the sugarcane processing industry integration of bagasse gasication for co-production of electricity or liquid fuels has been shown to have positive economic as well as environmental eects; see e.g. Walter and Ensinas [8] and Pellegrini and de Oliveira Junior [9]. Andersson and Harvey [10,11] have compared dierent options for producing hydrogen via gasication of solid biomass or black liquor, and showed that integration of hydrogen production with pulp production has several advantages, both economic and from a CO 2 reduction perspective.…”

mentioning

confidence: 99%

Systems analysis of integrating biomass gasification with pulp and paper production – Effects on economic performance, CO2 emissions and energy use

Wetterlund

Pettersson

Harvey

2011

Energy

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Systems analysis of integrating biomass gasification with pulp and paper production -Effects on economic performance, CO2 emissions and energy use, 2011, ENERGY, (36) This paper evaluates system aspects of bioreneries based on biomass gasication integrated with pulp and paper production. As a case the Billerud Karlsborg mill is used. Two biomass gasication concepts are considered: BIGDME (production of dimethyl ether) and BIGCC (combined cycle electricity production).The systems analysis is made with respect to economic performance, global CO 2 emissions and primary energy use. As reference cases, BIGDME and BIGCC integrated with district heating are considered.Biomass gasication is shown to be potentially protable for the mill. The results are highly dependent on assumed energy market parameters, particularly policy support. With strong policies promoting biofuels or renewable electricity, the calculated opportunity to invest in a gasication based biorenery exceeds investment cost estimates from the literature. When integrated with district heating the BIGDME case performs better than the BIGCC case, which shows high sensitivity to heat price and annual operating time. The BIGCC cases show potential to contribute to decreased global CO 2 emissions and energy use, which the BIGDME cases do not, mainly due to high biomass demand. As biomass is a limited resource, increased biomass use due to investments in gasication plants will lead to increased use of fossil fuels elsewhere in the system.

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mentioning

confidence: 99%

Systems analysis of integrating biomass gasification with pulp and paper production – Effects on economic performance, CO2 emissions and energy use

Wetterlund

Pettersson

Harvey

2011

Energy

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“…The most used methods for each step were utilized, such as steam explosion for pre-treatment [6,7,10,11], enzymatic hydrolysis of cellulose [6,7,10,11,12,13,14], and concentration of glucose liquor by means of a multiple effect evaporation system [6,15,16,17,18]. Furthermore, pentose liquor, a hydrolysis by-product was biodigested in an upflow anaerobic sludge blanket reactor (UASB) to produce biogas, as in [6,19,20].…”

Section: Second Generation Processmentioning

confidence: 99%

Exergetic Analysis between a First-Generation Bioethanol Production Plant and a Second-Generation Plant Coupled to Conventional Process

Mari¹,

Mari²,

Ferreira³

et al. 2018

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Abstract. Large consumption of non-renewable fuels in the world has strongly encouraged the search for biofuels, due to inevitable shortage of fossil energy sources and catastrophic problems generated by their use. Under these circumstances the so called second generation biofuel production has been highlighted, where lignocellulosic materials such as sugarcane bagasse are used to produce bioethanol, unlike the traditional first-generation process, whose feedstock is sugarcane. Therefore, this work aimed to perform a comparative exergetic analysis between first and second-generation bioethanol production processes, in order to evaluate from the exergetic point of view, which of these processes is the most feasible. It was found an overall exergetic efficiency of 60.89 % for the exclusively first-generation plant, whereas for the integrated plant, it was obtained 41.58 %. In this way, insertion of new stages in production process, required by the second generation, has caused consequently an increase of irreversibilities and losses.

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“…The business as usual or conventional technology only produces ethanol from sugarcane juice and bagasse is combusted to generate heat and power required for the sugarcane mills using backpressure steam turbine cogeneration systems at low levels of pressure and temperature (~22 bar/300 C) [3,44]. The conventional sugarcane mills are self-sufficient in their internal energy requirements using bagasse as a fuel in boilers with a little or no electricity sold to the grid [3,6].…”

Section: Business As Usual/conventional Technologymentioning

confidence: 99%

Optimizing ethanol and bioelectricity production in sugarcane biorefineries in Brazil

et al. 2016

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a b s t r a c tIn sugarcane biorefineries, the lignocellulosic portion of the sugarcane biomass (i.e. bagasse and cane trash) can be used as fuel for electricity production and/or feedstock for second generation (2G) ethanol. This study presents a techno-economic analysis of upgraded sugarcane biorefineries in Brazil, aiming at utilizing surplus bagasse and cane trash for electricity and/or ethanol production. The study investigates the trade-off on sugarcane biomass use for energy production: bioelectricity versus 2G ethanol production. The BeWhere mixed integer and spatially explicit model is used for evaluating the choice of technological options. Different scenarios are developed to find the optimal utilization of sugarcane biomass. The study finds that energy prices, type of electricity substituted, biofuel support and carbon tax, investment costs, and conversion efficiencies are the major factors influencing the technological choice. At the existing market and technological conditions applied in the upgraded biorefineries, 300 PJ y À1 2G ethanol could be optimally produced and exported to the EU, which corresponds to 2.5% of total transport fuel demand in the EU. This study provides a methodological framework on how to optimize the alternative use of agricultural residues and industrial co-products for energy production in agro-industries considering biomass supply chains, the pattern of domestic energy demand, and biofuel trade.

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Combined production of sugar, ethanol and electricity: Thermoeconomic and environmental analysis and optimization

Cited by 92 publications

References 13 publications

Systems analysis of integrating biomass gasification with pulp and paper production – Effects on economic performance, CO2 emissions and energy use

Systems analysis of integrating biomass gasification with pulp and paper production – Effects on economic performance, CO2 emissions and energy use

Exergetic Analysis between a First-Generation Bioethanol Production Plant and a Second-Generation Plant Coupled to Conventional Process

Optimizing ethanol and bioelectricity production in sugarcane biorefineries in Brazil

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