Integrated Renewable Production of ETBE from Switchgrass

[EN]In this work, we propose the optimization of a flowsheet for the conceptual design of an integrated renewable production of ETBE from ethanol and i-butene from switchgrass. A superstructure embedding a number of alternatives is proposed. Two technologies are considered for switchgrass pretreatme...

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Detalhes bibliográficos
Autores: Galán, Guillermo, Martín Martín, Mariano, Grossmann, Ignacio
Formato: artículo
Fecha de publicación:2019
País:España
Recursos:Universidad de Salamanca (USAL)
Repositorio:GREDOS. Repositorio Institucional de la Universidad de Salamanca
OAI Identifier:oai:gredos.usal.es:10366/139818
Acesso em linha:http://hdl.handle.net/10366/139818
Access Level:acceso abierto
Palavra-chave:Energy
Biofuels
i-Butene
Mathematical optimization
Ethanol
Switchgrass
3303 Ingeniería y Tecnología Químicas
3310.05 Ingeniería de Procesos
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oai_identifier_str oai:gredos.usal.es:10366/139818
network_acronym_str ES
network_name_str España
repository_id_str
spelling Integrated Renewable Production of ETBE from SwitchgrassGalán, GuillermoMartín Martín, MarianoGrossmann, IgnacioEnergyBiofuelsi-ButeneMathematical optimizationEthanolSwitchgrass3303 Ingeniería y Tecnología Químicas3310.05 Ingeniería de Procesos[EN]In this work, we propose the optimization of a flowsheet for the conceptual design of an integrated renewable production of ETBE from ethanol and i-butene from switchgrass. A superstructure embedding a number of alternatives is proposed. Two technologies are considered for switchgrass pretreatment, dilute acid and a novel ammonia fiber explosion (AFEX), so that the structure of the grass is broken down. Only glucose is fermented to produce i-butene, while xylose is fermented to ethanol. Ethanol is purified using a multieffect column followed by molecular sieves and a PSA-membrane system is used to upgrade the i-butene. The problem is formulated as an MINLP, and solved for each pretreatment as an NLP. Finally, an economic evaluation is performed including a sensitivity analysis. Biomass composition determines the byproduct obtained. Dilute acid is the selected pretreatment due to the largest yield to sugars and the possibility of adjusting the production of both i-butene and ethanol for the needs to ETBE. For a facility that produces 90 kt/yr of ETBE, the investment adds up to 160 M€ for a production cost of 0.61€/kg, which is above market price. Even though the results look promising, further experimental and scale up studies are required for validation.201920192019info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10366/139818reponame:GREDOS. Repositorio Institucional de la Universidad de Salamancainstname:Universidad de Salamanca (USAL)InglésSA026G18info:eu-repo/semantics/openAccessoai:gredos.usal.es:10366/1398182026-06-07T06:28:51Z
dc.title.none.fl_str_mv Integrated Renewable Production of ETBE from Switchgrass
title Integrated Renewable Production of ETBE from Switchgrass
spellingShingle Integrated Renewable Production of ETBE from Switchgrass
Galán, Guillermo
Energy
Biofuels
i-Butene
Mathematical optimization
Ethanol
Switchgrass
3303 Ingeniería y Tecnología Químicas
3310.05 Ingeniería de Procesos
title_short Integrated Renewable Production of ETBE from Switchgrass
title_full Integrated Renewable Production of ETBE from Switchgrass
title_fullStr Integrated Renewable Production of ETBE from Switchgrass
title_full_unstemmed Integrated Renewable Production of ETBE from Switchgrass
title_sort Integrated Renewable Production of ETBE from Switchgrass
dc.creator.none.fl_str_mv Galán, Guillermo
Martín Martín, Mariano
Grossmann, Ignacio
author Galán, Guillermo
author_facet Galán, Guillermo
Martín Martín, Mariano
Grossmann, Ignacio
author_role author
author2 Martín Martín, Mariano
Grossmann, Ignacio
author2_role author
author
dc.subject.none.fl_str_mv Energy
Biofuels
i-Butene
Mathematical optimization
Ethanol
Switchgrass
3303 Ingeniería y Tecnología Químicas
3310.05 Ingeniería de Procesos
topic Energy
Biofuels
i-Butene
Mathematical optimization
Ethanol
Switchgrass
3303 Ingeniería y Tecnología Químicas
3310.05 Ingeniería de Procesos
description [EN]In this work, we propose the optimization of a flowsheet for the conceptual design of an integrated renewable production of ETBE from ethanol and i-butene from switchgrass. A superstructure embedding a number of alternatives is proposed. Two technologies are considered for switchgrass pretreatment, dilute acid and a novel ammonia fiber explosion (AFEX), so that the structure of the grass is broken down. Only glucose is fermented to produce i-butene, while xylose is fermented to ethanol. Ethanol is purified using a multieffect column followed by molecular sieves and a PSA-membrane system is used to upgrade the i-butene. The problem is formulated as an MINLP, and solved for each pretreatment as an NLP. Finally, an economic evaluation is performed including a sensitivity analysis. Biomass composition determines the byproduct obtained. Dilute acid is the selected pretreatment due to the largest yield to sugars and the possibility of adjusting the production of both i-butene and ethanol for the needs to ETBE. For a facility that produces 90 kt/yr of ETBE, the investment adds up to 160 M€ for a production cost of 0.61€/kg, which is above market price. Even though the results look promising, further experimental and scale up studies are required for validation.
publishDate 2019
dc.date.none.fl_str_mv 2019
2019
2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10366/139818
url http://hdl.handle.net/10366/139818
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv SA026G18
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:GREDOS. Repositorio Institucional de la Universidad de Salamanca
instname:Universidad de Salamanca (USAL)
instname_str Universidad de Salamanca (USAL)
reponame_str GREDOS. Repositorio Institucional de la Universidad de Salamanca
collection GREDOS. Repositorio Institucional de la Universidad de Salamanca
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.301629

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