| Titre : | Effects of monoethylene glycol on carbon dioxide partitioning in gas/monoethylene glycol/water/salt mixed systems (2010) |
| Auteurs : | Amy T. Kan, Auteur ; Haiping Lu, Auteur ; Mason B. Tomson, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 49 N° 12, Juin 2010) |
| Article en page(s) : | pp. 5884–5890 |
| Note générale : | Chemical engineering |
| Langues : | Anglais |
| Tags : | Carbon dioxide partitioning Gas/liquid equilibrium NaCl− ; H2O− ; monoethylene glycol (MEG) mixed solvent |
| Résumé : | This paper extended the experimental results of carbon dioxide partitioning in gas/liquid equilibrium with a NaCl−H2O−monoethylene glycol (MEG) mixed solvent. The experiments were conducted systematically at 3−70 °C, 0−6.0 m NaCl, and 0−99 wt % MEG concentrations. CO2 partitioning to the NaCl−H2O−MEG solution is complicated due to nonideal behavior in the solvent. A self-consistent activity model is proposed to describe the effect of monoethylene glycol (MEG) on CO2 partitioning in gas/MEG/water/salt solutions using pure H2O as the reference state. Pitzer theory was used to calculate the effect of salt, and a semiempirical equation was applied to correlate the effects of MEG at different temperatures and ionic strengths. The equation is applicable to CO2 partitioning at 0−6 mol of NaCl and 0−97% MEG mixed solution at 0−90 °C. This model can be incorporated with Pitzer type activity coefficient models to predict the solubility of carbon dioxide in the presence of MEG and salt solutions. |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie901274v |
