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Communication Dans Un Congrès Année : 2014

Calorimetric studies for development of CO2 Capture and Storage (CCS) processes

Résumé

Carbon dioxide (CO 2) is a major anthropogenic greenhouse responsible of global warning and Intergovernmental Panel on Climate Change (IPCC) has encouraged nations to reduce emissions resulting from industry. The CO 2 Capture and Storage option proposed to reach this objective (Raynal, Bouillon et al. 2011) consists in a selective separation from industrial effluent followed by storage in secured sites. Our laboratory is particularly invested in CO 2 capture processes based on selective absorption in aqueous solution of amines (Arcis, Rodier et al. 2009) and storage process by dissolution in deep saline aquifers(Koschel, Coxam et al. 2006). The development of the industrial processes needs a thermodynamic characterization of systems composed of CO 2 , water, amine and electrolytes. The objectives of research studies are to predict gas absorption or dissolution properties, in order to design absorbent for CO 2 capture or to test capacity and safety of storage sites. Thermodynamic models representative of gas absorption or dissolution are currently used to describe chemical and physical mechanisms involved in gas capture or storage. Rigorous developments require adjustment of interaction parameters, in order to take into account system non-ideality. Acquisition of experimental data is necessary to adjust such semi-empirical parameters in classical models and, because of a lack of enthalpy data, most of the models are adjusted to fit solubility data (Arcis, Ballerat-Busserolles et al. 2012). They correctly represent vapor liquid equilibrium but usually fail to predict energetic properties. Our laboratory use specific calorimetric techniques to measure heat of mixing and determine enthalpy of absorption, enthalpy of solution or excess enthalpy. These properties represent severe test for the thermodynamic models, in terms of consistency and ability to predict accurate data used in process development. This presentation will focus on both theoretical and experimental tools implemented for the thermodynamic representation of CO 2 capture and storage.
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Dates et versions

hal-01262838 , version 1 (03-02-2016)

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  • HAL Id : hal-01262838 , version 1

Citer

K Ballerat-Busserolles, Mickaël R. Simond, Y Coulier, J-y Coxam. Calorimetric studies for development of CO2 Capture and Storage (CCS) processes. Journées de calorimétrie et Analyse Thermique, Grenet, May 2014, Rouen, France. ⟨hal-01262838⟩
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