Assessing the feasibility of deep eutectic solvents for CO2 capture from molecular and process modeling

Ismail Alkhatib, Carlos Alba, Daniel Bahamon, Felix Llovell, Lourdes Vega

Producció científica: Capítol de llibreContribució a congrés/conferènciaAvaluat per experts

Resum

The soft-SAFT equation of state is employed for the screening of deep eutectic solvents (DES) for CO2 capture based on key performance indicators, namely, CO2 absorption capacity, and enthalpy of absorption. This work belongs to a long-term project on assessing the adequacy of advanced EoSs (soft-SAFT) as a tool for the evaluation and design of alternative solvents for CO2 capture. The models for the pure DESs and their mixtures with CO2 are validated with experimental data, and subsequently used in a fully predictive manner to calculate the thermophysical properties needed for evaluating solvent performance. Results demonstrate that under the same operating conditions, [TBA] [Cl]:LA (1:2) is the most promising DES in terms of amount of CO2 absorbed and enthalpy of absorption. However, the comparison of these solvents to 30 wt.% aqueous MDEA solution shows that the promise of DESs is far from adequate in terms of CO2 solubility, being 13 times lower than that obtained with aqueous MDEA. Nevertheless, DESs show a clear advantage in terms of lower enthalpy of absorption, being 3 times less than aqueous MDEA, along with the absence of water as a co-solvent. The collection of the acquired results confirms the reliability of the soft-SAFT EoS as an attractive and valuable screening tool for CO2 capture and process modelling.

Idioma originalAnglès
Títol de la publicacióSociety of Petroleum Engineers - Abu Dhabi International Petroleum Exhibition and Conference 2020, ADIP 2020
EditorSociety of Petroleum Engineers
ISBN (electrònic)9781613997345
Estat de la publicacióPublicada - 2020
EsdevenimentAbu Dhabi International Petroleum Exhibition and Conference 2020, ADIP 2020 - Abu Dhabi, United Arab Emirates
Durada: 9 de nov. 202012 de nov. 2020

Sèrie de publicacions

NomSociety of Petroleum Engineers - Abu Dhabi International Petroleum Exhibition and Conference 2020, ADIP 2020

Conferència

ConferènciaAbu Dhabi International Petroleum Exhibition and Conference 2020, ADIP 2020
País/TerritoriUnited Arab Emirates
CiutatAbu Dhabi
Període9/11/2012/11/20

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