Poster De Conférence Année : 2022

Innovative process for the dimethyl ether direct synthesis from captured CO2 and renewable Hydrogen in multifunctional reactors

Résumé

Carbon capture and storage technologies must be supported by its conversion into high value-added products to efficiently limit its increase in the atmosphere. It is necessary to develop processes and technologies for a resource and energy efficient processing industry [1]. The increase in global energy demand and the requirement to mitigate carbon emissions, aiming at an eventual closed carbon cycle through the use of CO2, has made the CO2 hydrogenation a highly relevant reaction. In this context, the CO2 conversion into energy carriers exhibits a huge potential for large-scale commercialization [2]. The requirements to enhance production quality, reduce post-processing, improve efficiency and selectivity have led to the concept of process intensification: design of innovative devices (multifunctional reactors) and development of new methods. The integration of multiple functions within a process is a potential source of economic and energy gains, but the lack of practical design methodologies hinders the application of this approach. Chemical industries need a reliable methodology for upgrading their design habits [3]. Some products, such as dimethyl ether (DME), act as both a fuel and a chemical. The commercial and environmental advantages of the DME direct synthesis from CO2 and renewable H2 produced by electrolysis make this reaction an interesting candidate. DME presents a potential in different markets and has several useful characteristics. All these characteristics provide the opportunity to introduce DME as an alternative to diesel and LPG to satisfy the growing environmental restrictions and the energy market [4]. To carry out this balanced exothermic synthesis, a coupling with heat exchange and membrane separation is favorable. In addition to DME, the process produces heat and a large amount of water which reduce the catalyst efficiency and affect the kinetics, implying the need for an optimized coupling between these elementary functions. Fig. 1 presents a simplified schematic view of considered multifunctional reactor for the DME direct synthesis process. Based on the definition of a comprehensive approach for compact reactor design from the identification of limitations, one can (i) quantify the impact of the couplings on synthesis performance, with a view to targeting intensification strategies that will take advantage of their synergies; (ii) identify the sensitivity of reactions, heat transfer and transmembrane permeations on reactor performance; (iii) establish the appropriate ranges in which mass and heat transfer couplings are required to intensify the process.

Fichier principal
Vignette du fichier
GHGT-16-Poster_Behloul_Commenge_Castel.pdf (576.27 Ko) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)
Licence

Dates et versions

hal-04661131 , version 1 (24-07-2024)

Licence

Identifiants

  • HAL Id : hal-04661131 , version 1

Citer

Chakib R Behloul, Jean-Marc Commenge, Christophe Castel. Innovative process for the dimethyl ether direct synthesis from captured CO2 and renewable Hydrogen in multifunctional reactors. 16th Greenhouse Gas Control Technologies Conference, Oct 2022, Lyon, France. . ⟨hal-04661131⟩
197 Consultations
66 Téléchargements

Partager

  • More