| Titre : | Design of hybrid distillation-vapor membrane separation systems (2010) |
| Auteurs : | Jose A. Caballero, Auteur ; Ignacio E. Grossmann, Auteur ; Majid Keyvani, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Industrial & engineering chemistry research (Vol. 48 N° 20, Octobre 2009) |
| Article en page(s) : | pp. 9151–9162 |
| Note générale : | Chemical engineering |
| Langues : | Anglais |
| Tags : | Hybrid separation system Distillation column Parallel membrane Two-stage approach |
| Résumé : | Currently the separation of olefins (ethylene, propylene) from (ethane, propane) on a commercial scale is performed almost exclusively by cryogenic distillation in petrochemical industries. Since this technology is highly energy intensive, there is a strong economic incentive to explore alternative separation technologies with lower energy consumption. In this work, using the separation of ethylene and ethane as a representative case, a mathematical programming approach is proposed to optimize and retrofit a hybrid separation system consisting of a distillation column and a parallel membrane separation unit. A two-stage approach is used. First, a shortcut model is introduced that allows determining whether the hybrid system could be of interest and the order of magnitude of the energy savings that can be expected. Second, a superstructure optimization approach is proposed that uses rigorous models for both the column and the membrane using a process simulator and state of the art MINLP solvers. The results presented in the case study show that significant savings in total costs and energy (up to 30%) can be obtained with the hybrid system. |
| En ligne : | http://pubs.acs.org/doi/abs/10.1021/ie900499y |
