Modeling of the CO 2 Absorption in a Wetted Wall Column by Piperazine Solutions - IFPEN - IFP Energies nouvelles Accéder directement au contenu
Article Dans Une Revue Oil & Gas Science and Technology - Revue d'IFP Energies nouvelles Année : 2014

Modeling of the CO 2 Absorption in a Wetted Wall Column by Piperazine Solutions

Résumé

Theoretical and experimental investigations on the reactive absorption of CO 2 in aqueous solutions of PZ using a wetted wall column are presented. A rigorous two dimensional absorption model, accounting for kinetics, hydrodynamics and thermodynamics, has been developed for a wetted wall column. Major innovative features of the model, compared to previous work, are the account on the variation of the gas-side CO 2 concentration over the reactor height as well as the computation of the gas-liquid equilibrium by a thermodynamically consistent approach. A laboratory-scale wetted wall column was conceived and constructed and the gas-side mass-transfer coefficient was estimated. CO 2 absorption experiments were carried out on unloaded and loaded aqueous solutions of PZ over the range of 298-331 K, and for total PZ concentrations varying from 0.2 to 1 M. The reactor model permitted to predict the absorption fluxes in loaded as well as in unloaded solutions with an excellent accuracy, i.e. 3.2% AAD. In loaded solutions, the gas-side CO 2 concentration gradient, as well as the dicarbamate formation reaction has to be taken into account.
Fichier principal
Vignette du fichier
A9RCBC4.pdf (925.34 Ko) Télécharger le fichier
Origine Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-01085340 , version 1 (21-11-2014)

Identifiants

Citer

Alberto Servia, Nicolas Laloue, Julien Grandjean, Sabine Rode, Christine Roizard. Modeling of the CO 2 Absorption in a Wetted Wall Column by Piperazine Solutions. Oil & Gas Science and Technology - Revue d'IFP Energies nouvelles, 2014, 69 (5), pp.885 - 902. ⟨10.2516/ogst/2013136⟩. ⟨hal-01085340⟩
282 Consultations
2953 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More