| Revista: | Brazilian journal of chemical engineering |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000308801 |
| ISSN: | 0104-6632 |
| Autors: | Coutinho, J.A.P1 Pauly, J2 Daridon, J.L |
| Institucions: | 1Universidade de Aveiro, Centro de Investigacao em Quimica, Aveiro. Portugal 2Universite de Pau et des Pays de l'Adour, Laboratoire des Fluides Complexes, Pau, Pirineos Atlánticos. Francia |
| Any: | 2001 |
| Període: | Dic |
| Volum: | 18 |
| Número: | 4 |
| Paginació: | 411-422 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, aplicado |
| Resumen en inglés | Some years ago the authors proposed a model for the non-ideality of the solid phase, based on the Predictive Local Composition concept. This was first applied to the Wilson equation and latter extended to NRTL and UNIQUAC models. Predictive UNIQUAC proved to be extraordinarily successful in predicting the behaviour of both model and real hydrocarbon fluids at low temperatures. This work illustrates the ability of Predictive UNIQUAC in the description of the low temperature behaviour of petroleum fluids. It will be shown that using Predictive UNIQUAC in the description of the solid phase non-ideality a complete prediction of the low temperature behaviour of synthetic paraffin solutions, fuels and crude oils is achieved. The composition of both liquid and solid phases, the amount of crystals formed and the cloud points are predicted within the accuracy of the experimental data. The extension of Predictive UNIQUAC to high pressures, by coupling it with an EOS/G E model based on the SRK EOS used with the LCVM mixing rule, is proposed and predictions of phase envelopes for live oils are compared with experimental data |
| Disciplines | Química |
| Paraules clau: | Ingeniería química, Ingeniería petrolera, Parafinas, Depositación de cera, Equilibrio sólido-líquido, Modelado termodinámico, Petróleo crudo |
| Keyword: | Chemistry, Chemical engineering, Petroleum engineering, Paraffins, Wax deposition, Solid-liquid equilibrium, Thermodynamic modeling, Crude oil |
| Text complet: | Texto completo (Ver HTML) |
