References of "Léonard, Grégoire"
     in
Bookmark and Share    
Full Text
Peer Reviewed
See detailFeasibility study of low-carbon ammonia and steel production in Europe
Hoxha, Jean-Luc ULiege; Caspar, Mathieu; Donceel, Alexis et al

in Eceee Industrial Summer Study Proceedings (in press)

As stipulated in the Paris Agreement, greenhouse gas emissions have to be reduced in order to maintain the global warming well below 2°C. Moreover, the European Union committed to become carbon neutral by ... [more ▼]

As stipulated in the Paris Agreement, greenhouse gas emissions have to be reduced in order to maintain the global warming well below 2°C. Moreover, the European Union committed to become carbon neutral by 2050. This will require shifting industrial production currently based on fossil energies towards the use of renewable energies. The present article considers two conceptual industrial processes that may operate in Europe with low carbon emissions through the use of green hydrogen. The studied processes are projections of the production of ammonia and steel in the 2030s. Hydrogen is assumed to be produced by water electrolysis with Proton Exchange Membrane electrolysers. The purpose of this paper being to evaluate the feasibility of such processes, it is assumed that the electricity required by the processes is entirely provided by renewable energies, in order to focus only on the challenges directly related to the ammonia and steelmaking plants. For the same reason, the prices are estimated in 2030 and not later, to avoid too uncertain costs assumptions, even if a complete supply by renewable energies may be unrealistic at that moment. Based on current industrial sectors of both ammonia and steel productions, a detailed modelling of the two decarbonised processes in Aspen Plus software is carried out and an economic analysis is also presented to prove the feasibility of these processes [less ▲]

Detailed reference viewed: 66 (25 ULiège)
Full Text
Peer Reviewed
See detailEnergy reduction potential in natural gas processing through heat and process integration
Berchiche, Mohamed El Amine ULiege; Belaadi, Salah; Léonard, Grégoire ULiege

in Computer Aided Chemical Engineering (2020)

Despite the advantages of Natural Gas (NG) over other fossil fuels, natural gas supply chain is still impacted by a high energy demand and a negative impact on the environment as a result. This work ... [more ▼]

Despite the advantages of Natural Gas (NG) over other fossil fuels, natural gas supply chain is still impacted by a high energy demand and a negative impact on the environment as a result. This work investigates the potential of reducing energy penalty of natural gas sweetening processes through energy integration with upstream compression units and the use of Organic Rankine Cycle as a bottoming technology. The integration was studied over a range of inlet CO2 content and admission pressure varying between 4 to 10% and 30 to 50 bar respectively. Results of heat integration showed an ample reduction in heating requirements ranging from 40 to 100%. Furthermore, the integration of an optimized ORC as a second recovery tool yielded in a net power output equivalent to 30% to 190% of the required pumping power and a reduction of cooling load ranging from and 4 to 16% respectively. [less ▲]

Detailed reference viewed: 22 (2 ULiège)
Full Text
See detailPlein gaz : enjeux et perspectives de la valorisation du CO2
Léonard, Grégoire ULiege; Evrard, Brigitte ULiege; Grignard, Bruno ULiege et al

Conference given outside the academic context (2019)

Detailed reference viewed: 66 (17 ULiège)
Full Text
See detailThe key role of CO2 in the energy transition
Léonard, Grégoire ULiege

Conference (2019, November 16)

Detailed reference viewed: 29 (2 ULiège)
Full Text
Peer Reviewed
See detailTowards sustainable methanol from industrial CO2 sources
Douven, Sigrid ULiege; Benkoussas, Hana ULiege; Font-Palma, Carolina et al

in North, Michael; Styring, Peter (Eds.) Carbon dioxide utilisation (2019)

Mitigation of carbon dioxide emissions from industrial facilities has received less attention than the energy sector in the path towards decarbonisation up to now. Therefore, this chapter presents ... [more ▼]

Mitigation of carbon dioxide emissions from industrial facilities has received less attention than the energy sector in the path towards decarbonisation up to now. Therefore, this chapter presents potential measures to reduce CO2 emissions through the conversion of CO2 from industrial sources into methanol in order to achieve the targets set by the European Commission. Methanol is easy to synthesise from CO2 and hydrogen and a stable liquid fuel at ambient conditions, which makes it an ideal candidate for long-term storage of electricity from variable renewable sources. If methanol is stored, it could be used to generate electricity when necessary or as transport fuel due to its high octane rating. While Europe’s contribution in the worldwide production is rather modest, Northeast Asia is the largest methanol consumer. In this work, an integrated system is proposed to re-use CO2 emitted from an ammonia plant is converted into methanol. An Aspen Plus model was developed for the three sub-processes; i) CO2 capture of an ammonia plant, that already captures CO2 as part of the hydrogen production stage, ii) water/CO2 co-electrolysis, and iii) methanol synthesis and purification. Heat integration strategies are carried out to improve the process efficiency of the integrated system. This work also discusses current and potential use of CO2 emitted from other industrial sources such as steel mills, ethanol plants and power industry. The future of CO2 conversion into methanol greatly depends on its economics compared to traditional methanol production from fossil fuels. A review of the costs for the CO2-to-methanol process is presented, where it is recognised that projects require a carbon tax to make them financially attractive. The installation of CO2-to-methanol plants could fully replace current importations in Europe, for which only about 11 plants producing each 440 t/year would be needed. A key for the growth of CO2-to-methanol facilities is that the energy required is supplied by renewable energy to truly contribute to the industry decarbonisation. As such, even higher potential is anticipated if methanol is used as a sustainable energy carrier to fulfil the so-called methanol economy. [less ▲]

Detailed reference viewed: 156 (28 ULiège)
See detailPlein Gaz
Dupuis, Henri; Léonard, Grégoire ULiege; Detrembleur, Christophe ULiege et al

Article for general public (2019)

Le dioxyde de carbone (CO2) est devenu l’ennemi à abattre. Les chercheurs de la plateforme FRITCO2T, qui réunit quatre laboratoires, essaient au contraire de le valoriser

Detailed reference viewed: 24 (3 ULiège)
See detailCO2 re-uses technologies: a possible contributor to the environmental challenge
Dupont, Paul; Léonard, Grégoire ULiege

Poster (2019, May 08)

Detailed reference viewed: 28 (1 ULiège)
Full Text
See detailThe role of CO2 in the Energy transition
Léonard, Grégoire ULiege

Scientific conference (2019, April 30)

L’AILg, en coopération avec la FABI, organise différents Afterworks sur le thème de la transition énergétique. Au cours d’un After work, il est demandé à un représentant du monde académique de présenter ... [more ▼]

L’AILg, en coopération avec la FABI, organise différents Afterworks sur le thème de la transition énergétique. Au cours d’un After work, il est demandé à un représentant du monde académique de présenter un thème et ensuite à l’industriel (ou à un groupe d’industriels) d’introduire ses réalisations ou ses projets dans ce domaine. [less ▲]

Detailed reference viewed: 22 (0 ULiège)
Full Text
See detailCO2 research at the University of Liège
Léonard, Grégoire ULiege

Scientific conference (2019, April 26)

In this presentation, the activities related to CO2 at the University of Liège will be presented. After shortly introducing the challenges related to CO2 emissions, a brief overview of main CO2 capture ... [more ▼]

In this presentation, the activities related to CO2 at the University of Liège will be presented. After shortly introducing the challenges related to CO2 emissions, a brief overview of main CO2 capture technologies will be made, evidencing the maturity level of the different capture methods. In particular, our research activities related to post-combustion capture and solvent stability will be described. Then, different CO2 re-use technologies will be discussed, with the focus set on fuel synthesis and its possible role in the future energy mix in Belgium. A system approach will be presented (grid scale), as well as ULiège research related to process design and optimization. Finally, we will introduce the FRITCO2T platform (Federation of Researchers in Innovative Technologies for CO2 Transformation) created in 2016 at ULiège that gathers 3 faculties and 4 labs. Further research fields of the Platform include the production of mono/polymers, construction materials, as well as direct physical use of CO2 as a solvent or for foaming applications. [less ▲]

Detailed reference viewed: 21 (0 ULiège)
Full Text
See detailSpeed presentation ULiège FRITCO2T
Léonard, Grégoire ULiege; Dupont, Paul

Conference given outside the academic context (2019)

Detailed reference viewed: 19 (0 ULiège)
Full Text
See detailPresentation of the FRITCO2T Platform
Léonard, Grégoire ULiege

Conference given outside the academic context (2019)

Detailed reference viewed: 17 (3 ULiège)
See detailBelgium Energy Outlook 2050
Milecan, Michel; Charlez, Philippe; Colla, Martin et al

Report (2019)

La FABI est la Fédération d'Associations Belges d'Ingénieurs Civils, d'Ingénieurs Agronomes et de Bioingénieurs. Elle compte quelques 7.000 ingénieurs membres de leur association d'Ecole. La FABI est le ... [more ▼]

La FABI est la Fédération d'Associations Belges d'Ingénieurs Civils, d'Ingénieurs Agronomes et de Bioingénieurs. Elle compte quelques 7.000 ingénieurs membres de leur association d'Ecole. La FABI est le porte-parole pour la profession et la défense du titre d'ingénieur (lr), auprès des instances académiques, économiques et politiques tant régionales que fédérales et internationales. La FABI se fait entendre sur toutes les questions touchant au statut de l'ingénieur et à la reconnaissance de son diplôme. Elle veille à promouvoir le métier d'ingénieur et au respect de ses règles éthiques et déontologiques.La mise en place de la plateforme «Transition Énergétique» s’inscrit dans une des missions définies par les statuts relatifs au développement des activités d’information et de formation propices au rayonnement des ingénieurs et de l’activité économique belge. Le Conseil d’Administration de la FABI a en effet estimé nécessaire de faire entendre l’avis des ingénieurs dans le débat public sur cet important sujet avec pour objectif d’apporter les caractéristiques de chacun des éléments qui entrent en ligne de compte dans les choix menant à des visions énergétiques durables. [less ▲]

Detailed reference viewed: 29 (1 ULiège)
Full Text
See detailLa modélisation des procédés au service d'un monde qui change
Léonard, Grégoire ULiege

Conference given outside the academic context (2018)

Detailed reference viewed: 16 (0 ULiège)
Full Text
See detailEffect of solvent concentration on the energy demand of an absorption-based natural gas sweetening plant
Berchiche, Mohamed El Amine ULiege; Garcia, Monica; Belaadi, Salah et al

Poster (2018, October 23)

Amine-based chemical absorption is the most advanced CO2 capture system. Yet, high energy requirement is a major hinder to its wide deployment. Among the possible routes of improvement is the use of novel ... [more ▼]

Amine-based chemical absorption is the most advanced CO2 capture system. Yet, high energy requirement is a major hinder to its wide deployment. Among the possible routes of improvement is the use of novel amines that can achieve the trade-off between robustness and low regeneration energy. Our work investigates the use of MDEA/DEA as solvent for the capture of CO2 from natural gas. The presence of BTEX (Benzene, Toluene, Ethyl Benzene and Xylene) in the raw natural gas was taken into account. AspenHysys v9 was used to simulate the chemical absorption system. The impact of solvent composition on key process variables, the required flow rate to achieve transport specification, required reboiler duty, pumping energy, BTEX incineration energy and amine losses, were studied. The optimal operating point corresponding to the lowest energy requirement was identified and the separate contribution of each process parameter was estimated. [less ▲]

Detailed reference viewed: 31 (2 ULiège)
Full Text
See detailSO2 effect on oxidative degradation of monoethanolamine for post combustion CO2 capture
Benkoussas, Hana ULiege; Dubrulle, Louis ULiege; Léonard, Grégoire ULiege

Poster (2018, October 23)

The most conventional amine used in the post combustion capture technology, based on chemical absorption, is monoethanolamine (MEA). Depending on the composition of the flue gas to be treated, several ... [more ▼]

The most conventional amine used in the post combustion capture technology, based on chemical absorption, is monoethanolamine (MEA). Depending on the composition of the flue gas to be treated, several mechanisms of amine degradation occur. This leads to a loss of CO2 absorption capacity and may give rise to products that are environmentally difficult to dispose of. Results from CO2 capture pilot plants showed that oxidative degradation due to the presence of oxygen in the flue gas is the main degradation pathway. Furthermore, MEA degrades when exposed to a flue gas containing an amount of sulfur dioxide (SO2). Until now there is not a clear statement about the effect of SO2 on oxidative degradation of MEA. The goal of this study is to identify the impact of the presence of SO2 on the oxidative degradation of MEA. [less ▲]

Detailed reference viewed: 121 (51 ULiège)
Full Text
See detailLe rôle clé du CO2 dans la transition énergétique
Léonard, Grégoire ULiege

Conference given outside the academic context (2018)

Detailed reference viewed: 119 (17 ULiège)
See detailIntervention pour le Département de Chemical Engineering
Léonard, Grégoire ULiege

Conference given outside the academic context (2018)

Rencontre-conférence LIEGE CREATIVE 1/03/2018 Une Europe électrique 100 % renouvelable en 2050: Utopique ou vraisemblable ? Discussion faisant suite à une étude réalisée au sein d'Engie et présentée par ... [more ▼]

Rencontre-conférence LIEGE CREATIVE 1/03/2018 Une Europe électrique 100 % renouvelable en 2050: Utopique ou vraisemblable ? Discussion faisant suite à une étude réalisée au sein d'Engie et présentée par Philippe Saintes [less ▲]

Detailed reference viewed: 17 (3 ULiège)