Solubility Parameter from an Acoustic Method: Temperature Effect and Applications to Petroleum

다국어 초록 (Multilingual Abstract)

The thermodynamic information relating cohesive energy and internal pressure is explored in order to calculate the solubility parameter for hydrocarbons, some of its mixtures, and crude oils taking into account the effect of temperature. Single‐phase data of pure hydrocarbons and some of their binary and ternary mixtures, such as speed of sound, density, and heat capacity at constant pressure, are used to adjust the proposed models. Finally, the results are compared with an experimental method recently presented by us in a previous publication. This evaluation demonstrates that the proposed methods are robust for highly saturated oils. Moreover, a general expression including SARA (percentage by weight of saturates S, aromatics A, resins R, and asphaltenes As) composition is proposed to predict the solubility parameter of oils with high content of resins and asphaltenes.
An acoustic method is proposed to determine the solubility parameter for hydrocarbons and crude oils. The method is based on sound velocity and density measurements and has the advantage of predicting the solubility parameter at different temperatures, thus eliminating the need for additional correlations. Moreover, it is an interesting form to predict oil compatibility and asphaltene stability.