CO2 capture by gaz hydrate cristallization : Application on the CO2-N2 mixture
type: Dataset
description: CO2 capture and sequestration represent a major industrial and scientific challenge of thiscentury. There are different methods of CO2 separation and capture, such as solid adsorption, amines adsorption and cryogenic fractionation. Although these processes are welldeveloped at industrial level, they are energy intensive. Hydrate formation method is a lessenergy intensive and has an interesting potential to separate carbon dioxide. Gas hydrates are Document crystalline compounds that consist of hydrogen bonded network of water molecules trapping a gas molecule. Gas hydrate formation is favored by high pressure and low temperature. This study was conducted as a part of the SECOHYA ANR Project. The objective is to study the thermodynamic and kinetic conditions of the process to capture CO2 by gas hydrate crystallization. Firstly, we developed an experimental apparatus to carry out experiments to determine the thermodynamic and kinetic formation conditions of CO2-N2 gas hydrate mixture in water as liquid phase. We showed that the operative pressure may be very important and the temperature very low. For the feasibility of the project, we used TBAB (TetraButylAmmonium Bromide) as thermodynamic additive in the liquid phase. The use of TBAB may reduce considerably the operative pressure.In the second part of this study, we presented a thermodynamic model, based on the van der Waals and Platteeuw model. This model allows the estimation of thermodynamic equilibrium conditions. Experimental equilibrium data of CO2-CH4 and CO2-N2 mixtures are presented and compared to theoretical results.
identifier: NNT: 2012EMSE0656
issued: 2026-05-14T18:11:11.474112
language: fr
modified: 2026-05-14T18:11:11.474118
contact point: Organization
  fn: CCSD
keyword: co2
keyword: cristallisation
keyword: crystallization
keyword: hydrate
keyword: infoeu-reposemanticsdoctoralthesis
keyword: modeling
keyword: modelisation
keyword: spiotherengineering-sciences-physicsother
keyword: tbab
keyword: thermodynamic
keyword: thermodynamique
keyword: theses
landing page: https://theses.hal.science/tel-00783876

CO2 capture by gaz hydrate cristallization : Application on the CO2-N2 mixture
type: Distribution
format: HTML
issued: 2026-05-14T18:11:11.505502
modified: 2026-05-14T18:11:11.450353
access URL: https://theses.hal.science/tel-00783876

test_moissonnage_selune
type: Agent