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Solubility and Solid-Phase Composition in Na2CO3-Na2SO4 Solutions at Boiling Temperature: A Modeling Approach

Marta Bialik (Institutionen för kemi- och bioteknik, Skogsindustriell kemiteknik) ; Hans Theliander (Institutionen för kemi- och bioteknik, Skogsindustriell kemiteknik) ; Peter Sedin (Institutionen för kemi- och bioteknik, Skogsindustriell kemiteknik) ; Christopher L Verrill ; Nikolai DeMartini
Industrial and Engineering Chemistry Research (0888-5885). Vol. 47 (2008), 9, p. 3233-3238.
[Artikel, refereegranskad vetenskaplig]

Scaling caused by Na2CO3-Na2SO4 double salts constitutes a severe problem in black liquor evaporators. The ability to predict the solubility and solid-phase composition of these species would be conclusive in minimizing the adverse effects of scaling. Experimental solubility data for (sodium sulfate) dicarbonate, a carbonate-rich double salt identified in Na2CO3-Na2SO4 precipitates, were generated and used for fitting an empirical solubility model. A thermodynamically based approach for predicting the solubility and solidphase composition, previously used for burkeite precipitates, was applied to solid solutions of dicarbonate.

Nyckelord: Solubility, scaling, double salt, solid solution, (sodium sulfate) dicarbonate, sodium sulfate, sodium carbonate

Denna post skapades 2008-10-02.
CPL Pubid: 74717


Institutioner (Chalmers)

Institutionen för kemi- och bioteknik, Skogsindustriell kemiteknik (2005-2014)



Chalmers infrastruktur

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Denna publikation ingår i:

Thermodynamic modelling of black liquor-related solutions. Pitzer method for estimating activities, solubilities and boiling point rise