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Prediction of sublimation pressures from SCO2+hydrocarbon systems using a particle swarm optimization

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Abstract

A method to predict the sublimation pressures of solid hydrocarbons using a biologically-deriver algorithm is presented. Seven binary gas-solid phase systems of supercritical carbon dioxide with hydrocarbons are considered in this study. The Peng-Robinson equation of state with the Wong-Sandler mixing rules are used to evaluate the fugacity coefficient on the systems. Then, particle swarm optimization is used for minimize the difference between calculated and experimental solubility, and the sublimation pressures are calculated from solubility data. The results show that the method presented is reliable enough and can be used with confidence to estimate the sublimation pressure of other hydrocarbons.

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  1. Departamento de Física, Universidad de La Serena, Casilla, 554, La Serena, Chile

    J. A. Lazzús

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  1. J. A. Lazzús
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Lazzús, J.A. Prediction of sublimation pressures from SCO2+hydrocarbon systems using a particle swarm optimization. J. Engin. Thermophys. 18, 306–314 (2009). https://doi.org/10.1134/S1810232809040043

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  • DOI: https://doi.org/10.1134/S1810232809040043

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