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CAPTURE DE CO2 EN CENTRALES AU CHARBON PULVERISE (CP): ETUDE DU PROCEDE A BASE DE CARBONATE DE POTASSIUM


AMANN J. M. 1, BOUALLOU CHAKIB 1 *, DESCAMPS C. 1, KANNICHE M. 2
(1)CENTRE ÉNERGÉTIQUE ET PROCÉDÉS - ÉCOLE DES MINES DE PARIS, 60 BD SAINT MICHEL, 75006 PARIS, FRANCE (2)EDF, DIVISION RECHERCHE ET DÉVELOPPEMENT, DÉPARTEMENT SYSTÈMES DE PRODUCTION ET ENVIRONNEMENT, 6 QUAI WATIER, 78401 CHATOU CEDEX, FRANCE. *CORRESPONDA

Issue:

SCSCC6, Volume VII, No. 2

Section:

Volume VII - No. 2 (2006)

Abstract:

The capture of CO2 in the power production systems is due to the desire of reduction of greenhouse producing gases. The present study deals with the separation of CO2 from flue gases of power plants through chemical absorption in potassium carbonate solutions. The flue gas composition (11.71 % moles CO2) corresponds to a 600 MWe power plant using pulverized coal as fuel and desulphurization. The CO2 absorption was simulated using Aspen Plusℱ software. For estimating the physical properties of substances and mixtures, the thermodynamic model NRTL has been chosen. A parametric study revealed the influence of the solvent flow upon CO2 separation degree and reboiling heat demand, at different loading degrees. The study shows that reboiling heat demand is very high at separation degrees higher than 50%.

Keywords:

pulverized coal, chemical absorption, potassium carbonate, capture, carbon dioxide.

Code [ID]:

CSCC6200607V02S01A0005 [0001091]

Full paper:

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