Publications of Grégoire Léonard
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See detailProgress Report April 2011
Léonard, Grégoire ULiege

E-print/Working paper (2011)

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See detailModeling post-combustion CO2 capture with amine solvents
Léonard, Grégoire ULiege; Heyen, Georges ULiege

in Computer Aided Chemical Engineering (2011), 29

Carbon capture and storage is a technology that can contribute to face the challenge of rising energy demand combined with a growing environmental awareness. In the present work, the CO2 capture process ... [more ▼]

Carbon capture and storage is a technology that can contribute to face the challenge of rising energy demand combined with a growing environmental awareness. In the present work, the CO2 capture process with monoethanolamine (MEA) is modeled using the simulation tool Aspen Plus. Two different modeling approaches are studied and compared: the equilibrium and the rate-based approaches. An optimization of key process parameters is performed and process modifications are studied with the objective of improving the global process energy efficiency. [less ▲]

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See detailOptimisation du procédé de captage de CO2 dans des solvants aminés
Léonard, Grégoire ULiege; Heyen, Georges ULiege

in Récents Progrès en Génie des Procédés (2011), 101

Post-combustion carbon capture in amine solvents is currently one of the most promising technologies to prevent large quantities of CO2 from being emitted into the atmosphere. Two models (equilibrium and ... [more ▼]

Post-combustion carbon capture in amine solvents is currently one of the most promising technologies to prevent large quantities of CO2 from being emitted into the atmosphere. Two models (equilibrium and kinetics) have been built using the Aspen Plus software in order to optimise the capture process. A sensitivity study at constant CO2 capture rate has shown that the solvent concentration, its flow rate and its regenerating pressure have the largest influence on the process energy requirement. Different process flowsheet modifications such as the lean vapor compression, an absorber inter-cooling and the split-flow configuration have been simulated as well, decreasing the energy cost of the process. Tests on a pilot installation will be made that will help to validate this model. [less ▲]

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See detailLa capture du dioxide de carbone en centrale électrique
Léonard, Grégoire ULiege

Scientific conference (2010)

Présentation de mon sujet de thèse au département de chimie appliquée

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See detailOptimal design of a CO2 absorption unit and assessment of solvent degradation
Léonard, Grégoire ULiege

Conference (2010)

Presentation of the main research fields of my PhD thesis at the University of Liège

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See detailModeling post-combustion CO2 capture with amine solvents
Léonard, Grégoire ULiege; Heyen, Georges ULiege

Poster (2010)

In order to avoid the emission of large amounts of greenhouse gas, CO2 capture in fossil fuel power plants and subsequent underground CO2 sequestration is studied. The capture occurs by reactive CO2 ... [more ▼]

In order to avoid the emission of large amounts of greenhouse gas, CO2 capture in fossil fuel power plants and subsequent underground CO2 sequestration is studied. The capture occurs by reactive CO2 absorption into chemical solvent systems at moderate temperature (~50°C) followed by solvent regeneration at higher temperature (~120°C). So far, the most employed solvent for acid gas capture is monoethanolamine (MEA). One main drawback of this technology is the high energy consumption necessary to regenerate the solvent. In the present work, the CO2 capture process with MEA is modeled using the simulation tool Aspen Plus®. The base case process is optimized and some process improvements are studied that imply a significant decrease of the process exergy consumption. [less ▲]

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See detailModeling post-combustion CO2 capture with amine solvents
Léonard, Grégoire ULiege; Heyen, Georges ULiege

Conference (2010)

Oral communication at the Cape-forum, Aachen, 2010. Modeling CO2 capture process and optimization of some process parameters with an equilibrium-based model.

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See detailCO2 valorization
Léonard, Grégoire ULiege; Amouroux, Jacques

E-print/Working paper (2010)

Brief presentation of the results achieved during a workshop on CO2 valorization

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See detailDiploma thesis presentation
Léonard, Grégoire ULiege

Scientific conference (2009, November 09)

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See detailAufbau und Vermessung eines Regenerators für offene Sorptionssysteme mit flüssigen Sorbentien zur Raumklimatisierung mit Niedertemperaturwärme
Léonard, Grégoire ULiege

Master's dissertation (2008)

Travail de fin d'études réalisé dans le cadre d'un échange TIME à l'Université Technique de Munich. Il s'agissait de concevoir et construire un échangeur de chaleur et de matière à plaques pour la ... [more ▼]

Travail de fin d'études réalisé dans le cadre d'un échange TIME à l'Université Technique de Munich. Il s'agissait de concevoir et construire un échangeur de chaleur et de matière à plaques pour la régénération de solvants employés pour la climatisation des bâtiments avec de la chaleur basse température. [less ▲]

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