Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10265139 | Comptes Rendus Chimie | 2016 | 9 Pages |
Abstract
Binary systems containing supercritical CO2Â +Â hydrocarbons were used for modeling gas-solid equilibrium by a combined method including a thermodynamic model and a meta-heuristic algorithm. The Peng-Robinson (PR) equation of state was used in the classical solubility equation. In addition, Wong-Sandler (WS) mixing rules were used, and the van Laar model (VL) was included in order to evaluate the excess Gibbs free energy that appears in these mixing rules. Then, a variant of particle swarm optimization (PSO), called Frankenstein PSO (FPSO) was implemented for minimizing the difference between calculated and experimental solubility values. The results showed that the FPSO algorithm is a very powerful tool for parameter estimation on the PR-WS-VL model with good performance and accuracy, and considerably low deviations. Therefore, values calculated by the combined method (PR-WS-VLÂ +Â FPSO) are considered accurate enough for physical and engineering calculations, among other uses.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Juan A. Lazzús,