Novel process to reduce benzene, thiophene, and pyrrole in gasoline based on [4bmpy][TCM] Ionic Liquid
Metadatos
Title:
Novel process to reduce benzene, thiophene, and pyrrole in gasoline based on [4bmpy][TCM] Ionic Liquid
Author:
Larriba, Marcos; Delgado-Mellado, Noemí; Navarro, Pablo; Alcover, Roberto; Moya, Cristian; Palomar, José; García, Julián; Rodríguez, Francisco
Entity:
UAM. Departamento de Química Física Aplicada
Publisher:
ACS Publications
Date:
2018-03-27
Citation:
10.1021/acs.energyfuels.8b00529
Energy Fuels 32.4 (2018): 5650-5658
ISSN:
0887-0624 (print); 1520-5029 (online)
DOI:
10.1021/acs.energyfuels.8b00529
Funded by:
The authors are grateful to Ministerio de Economía y Competitividad (MINECO) of Spain
and Comunidad Autónoma de Madrid for financial support of Projects CTQ2014–53655-R
and S2013/MAE-2800, respectively. N.D.M. thanks MINECO for her FPI grant (Reference
BES–2015–072855) and M.L. also thanks MINECO for his Juan de la Cierva-Formación
Contract (Reference FJCI-2015-25343). P.N. thanks Fundação para a Ciência e a Tecnologia for awarding him a postdoctoral grant (Reference SFRH/BPD/117084/2016)
Project:
Gobierno de España. CTQ2014–53655-R; Comunidad de Madrid. S2013/MAE-2800/LIQUORGAS
Editor's Version:
http://doi.org/10.1021/acs.energyfuels.8b00529
Subjects:
Benzene; Thiophene; Pyrrole; Commercial gasoline; COSMO-based/Aspen Plus; Física; Química
Note:
This document is the accepted version of a published work that appeared in final form in Energy Fuels copyright © American Chemical Society after peer review and technical editing bu the publisher. to access final edited work see Novel Process to Reduce Benzene, Thiophene, and Pyrrole in Gasoline Based on [4bmpy][TCM] Ionic Liquid
Marcos Larriba, Noemí Delgado-Mellado, Pablo Navarro, Roberto Alcover, Cristian Moya, José Palomar, Julián García, and Francisco Rodríguez
Energy & Fuels 2018 32 (4), 5650-5658
DOI: 10.1021/acs.energyfuels.8b00529
Rights:
© 2018 American Chemical Society
Abstract:
Regulations on benzene-, nitro-, and sulfur-containing aromatic hydrocarbon content in commercial gasolines are becoming more restrictive due to environmental and health issues. The benzene content in reformulated commercial gasoline is currently around 1%. The reduction of benzene levels to comply with future regulations will imply significant changes in refinery configurations. This paper reports a novel extraction process to simultaneously separate benzene, thiophene, and pyrrole from a gasoline using the 1-butyl-4-metylpyridinium tricyanomethanide ([4bmpy][TCM]) ionic liquid (IL). A distillation sequence is also proposed for the isolation of the three aromatic hydrocarbons. The conceptual design of the whole process has been based on experimental data from the liquid-liquid extraction and vapor-liquid separation of benzene, thiophene, and pyrrole from isooctane using the IL [4bmpy][TCM]. A COSMO-based/Aspen Plus methodology has been used to simulate the conceptual design. The a priori COSMO-based/Aspen Plus approach was validated by comparison with the experimental liquid-liquid extraction results and conventional simulations based on experimental distribution ratios and K values. Benzene, thiophene, and pyrrole contents in the gasoline would be reduced from 5.0% to 0.1% using the proposed process with a solvent-to-feed mass ratio of 5.0, and also three streams with high content in each aromatic would be obtained. Increasing the solvent-to-feed mass ratio above 5.0, benzene content in the treated gasoline could be reduced up to 200 ppm.
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