MUTUAL SOLUBILITIES OF HYDROCARBON-WATER SYSTEMSWITH F-SAC

MUTUAL SOLUBILITIES OF HYDROCARBON-WATER SYSTEMSWITH F-SAC

POSSANI, L. F. K.; SOARES, R. de P.

Artigo:

In this paper, the F-SAC model was extended in order to better representthe very low mutual solubility of hydrocarbons (alkanes, cycloalkanes, alkenes,cycloalkenes and aromatics) and water. Infinite dilution activity coefficient and liquid-liquid equilibrium data were considered. A new parameter for the computation of thewater self-association energy was proposed, enabling a better agreement withexperimental data in wide temperature ranges. The results were compared with someUNIFAC variants, found in the literature. For the systems studied, the proposed methodperformed better, including the quantitative representation of the experimentally observedminimum solubility point. None of UNIFAC models tested was capable of predicting suchbehavior. Finally, the model was used to predict the water solubility in petroleum fractionsby using a pseudo-components approach. With this approach, the F-SAC model wascapable of satisfactory represent the experimental data.

In this paper, the F-SAC model was extended in order to better representthe very low mutual solubility of hydrocarbons (alkanes, cycloalkanes, alkenes,cycloalkenes and aromatics) and water. Infinite dilution activity coefficient and liquid-liquid equilibrium data were considered. A new parameter for the computation of thewater self-association energy was proposed, enabling a better agreement withexperimental data in wide temperature ranges. The results were compared with someUNIFAC variants, found in the literature. For the systems studied, the proposed methodperformed better, including the quantitative representation of the experimentally observedminimum solubility point. None of UNIFAC models tested was capable of predicting suchbehavior. Finally, the model was used to predict the water solubility in petroleum fractionsby using a pseudo-components approach. With this approach, the F-SAC model wascapable of satisfactory represent the experimental data.

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DOI: 10.5151/chemeng-cobeq2014-1548-18716-153212

Referências bibliográficas

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Como citar:

POSSANI, L. F. K.; SOARES, R. de P.; "MUTUAL SOLUBILITIES OF HYDROCARBON-WATER SYSTEMSWITH F-SAC", p-15776-15783. In: Anais do XX Congresso Brasileiro de Engenharia Química - COBEQ 2014 [= Blucher Chemical Engineering Proceedings, v.1, n.2]. São Paulo: Blucher, 2015.
ISSN 23591757, DOI 10.5151/chemeng-cobeq2014-1548-18716-153212