Investigating best available technique for CO2 chemical absorption: solvent selection based on empirical surrogate model and exergy loss

The carbon dioxide concentration in the atmosphere has reached extremely high levels, generating environmental concerns. Unfortunately, despite the climate change, CO2 is not included nowadays as a key environmental issue in Best Available Technique (BAT) reference documents (BREF). Industrially, th...

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Autores: Plesu Popescu, Alexandra Elena, González, Àgata, Llorens Llacuna, Joan, Bonet i Ruiz, Jordi
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2021
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/181857
Acceso en línea:https://hdl.handle.net/2445/181857
Access Level:acceso abierto
Palabra clave:Absorció
Diòxid de carboni
Consum d'energia
Absorption
Carbon dioxide
Energy consumption
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spelling Investigating best available technique for CO2 chemical absorption: solvent selection based on empirical surrogate model and exergy lossPlesu Popescu, Alexandra ElenaGonzález, ÀgataLlorens Llacuna, JoanBonet i Ruiz, JordiAbsorcióDiòxid de carboniConsum d'energiaAbsorptionCarbon dioxideEnergy consumptionThe carbon dioxide concentration in the atmosphere has reached extremely high levels, generating environmental concerns. Unfortunately, despite the climate change, CO2 is not included nowadays as a key environmental issue in Best Available Technique (BAT) reference documents (BREF). Industrially, the widespread industrial technology to capture CO2 is the chemical absorption using aqueous monoethanolamine (MEA) at 30%wt, which is the basis of comparison for novel alternative techniques in the literature and seems a suitable candidate to be proposed as Best Available Technique. Nevertheless, there is an intense research to find alternative solvents that decrease the energy consumption for carbon capture and many solvents are claimed in the literature to outperform MEA. A novel empirical surrogate model and exergy balances are used to confirm that MEA is still the best candidate to be proposed as Best Available Technique. The surrogate model proposed in this study properly regresses the CO2 gas liquid equilibrium data. The regressed parameters of the model are tabulated in this study for many aqueous alkanolamines and their mixtures, being the basis for computationally inexpensive chemical absorption column design. The surrogate model parameter considering the temperature is related with the chemical absorption energy and the consumed energy for solvent recovery. The obtained results show that none of the considered alkanolamine outperforms MEA in all the considered aspects, i.e. energy and solvent flowrate. MEA minimum flowrate is 15.62 mol solvent/mol gas and its heat of absorption regression parameter is − 27,745 J/mol. The proposed mathematical method is useful as a fast assessment for other novel alternatives that will be proposed in the future, providing energetically more efficient and cleaner technologies for CO2 capture.Springer Verlag2021info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/181857Articles publicats en revistes (Enginyeria Química i Química Analítica)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: https://doi.org/10.1007/s10098-021-02143-7Clean Technologies And Environmental Policy, 2021, vol. 485https://doi.org/10.1007/s10098-021-02143-7(c) Plesu Popescu et al, 2021info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1818572026-05-27T06:46:51Z
dc.title.none.fl_str_mv Investigating best available technique for CO2 chemical absorption: solvent selection based on empirical surrogate model and exergy loss
title Investigating best available technique for CO2 chemical absorption: solvent selection based on empirical surrogate model and exergy loss
spellingShingle Investigating best available technique for CO2 chemical absorption: solvent selection based on empirical surrogate model and exergy loss
Plesu Popescu, Alexandra Elena
Absorció
Diòxid de carboni
Consum d'energia
Absorption
Carbon dioxide
Energy consumption
title_short Investigating best available technique for CO2 chemical absorption: solvent selection based on empirical surrogate model and exergy loss
title_full Investigating best available technique for CO2 chemical absorption: solvent selection based on empirical surrogate model and exergy loss
title_fullStr Investigating best available technique for CO2 chemical absorption: solvent selection based on empirical surrogate model and exergy loss
title_full_unstemmed Investigating best available technique for CO2 chemical absorption: solvent selection based on empirical surrogate model and exergy loss
title_sort Investigating best available technique for CO2 chemical absorption: solvent selection based on empirical surrogate model and exergy loss
dc.creator.none.fl_str_mv Plesu Popescu, Alexandra Elena
González, Àgata
Llorens Llacuna, Joan
Bonet i Ruiz, Jordi
author Plesu Popescu, Alexandra Elena
author_facet Plesu Popescu, Alexandra Elena
González, Àgata
Llorens Llacuna, Joan
Bonet i Ruiz, Jordi
author_role author
author2 González, Àgata
Llorens Llacuna, Joan
Bonet i Ruiz, Jordi
author2_role author
author
author
dc.subject.none.fl_str_mv Absorció
Diòxid de carboni
Consum d'energia
Absorption
Carbon dioxide
Energy consumption
topic Absorció
Diòxid de carboni
Consum d'energia
Absorption
Carbon dioxide
Energy consumption
description The carbon dioxide concentration in the atmosphere has reached extremely high levels, generating environmental concerns. Unfortunately, despite the climate change, CO2 is not included nowadays as a key environmental issue in Best Available Technique (BAT) reference documents (BREF). Industrially, the widespread industrial technology to capture CO2 is the chemical absorption using aqueous monoethanolamine (MEA) at 30%wt, which is the basis of comparison for novel alternative techniques in the literature and seems a suitable candidate to be proposed as Best Available Technique. Nevertheless, there is an intense research to find alternative solvents that decrease the energy consumption for carbon capture and many solvents are claimed in the literature to outperform MEA. A novel empirical surrogate model and exergy balances are used to confirm that MEA is still the best candidate to be proposed as Best Available Technique. The surrogate model proposed in this study properly regresses the CO2 gas liquid equilibrium data. The regressed parameters of the model are tabulated in this study for many aqueous alkanolamines and their mixtures, being the basis for computationally inexpensive chemical absorption column design. The surrogate model parameter considering the temperature is related with the chemical absorption energy and the consumed energy for solvent recovery. The obtained results show that none of the considered alkanolamine outperforms MEA in all the considered aspects, i.e. energy and solvent flowrate. MEA minimum flowrate is 15.62 mol solvent/mol gas and its heat of absorption regression parameter is − 27,745 J/mol. The proposed mathematical method is useful as a fast assessment for other novel alternatives that will be proposed in the future, providing energetically more efficient and cleaner technologies for CO2 capture.
publishDate 2021
dc.date.none.fl_str_mv 2021
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/181857
url https://hdl.handle.net/2445/181857
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1007/s10098-021-02143-7
Clean Technologies And Environmental Policy, 2021, vol. 485
https://doi.org/10.1007/s10098-021-02143-7
dc.rights.none.fl_str_mv (c) Plesu Popescu et al, 2021
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Plesu Popescu et al, 2021
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Springer Verlag
publisher.none.fl_str_mv Springer Verlag
dc.source.none.fl_str_mv Articles publicats en revistes (Enginyeria Química i Química Analítica)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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