Estudio de estrategia de optimización global para la determinación de sistemas de equilibrio por medio de programación MINLP (Mixed Integer Non Linear Programming)
The objective of this study is to propose a mixed integer non linear programming formulation to find the phases with it's compositions of a non ideal equilibrium system, given the Temperature, the Pressure, the feed and the substances on equilibruim. Phase equilibruim calculation has an importa...
- Autores:
-
Cubillos Muñoz, José Alejandro
- Tipo de recurso:
- Trabajo de grado de pregrado
- Fecha de publicación:
- 2018
- Institución:
- Universidad de los Andes
- Repositorio:
- Séneca: repositorio Uniandes
- Idioma:
- spa
- OAI Identifier:
- oai:repositorio.uniandes.edu.co:1992/61364
- Acceso en línea:
- http://hdl.handle.net/1992/61364
- Palabra clave:
- Energía libre de Gibbs
Equilibrio termodinámico
Optimización matemática
- Rights
- openAccess
- License
- http://creativecommons.org/licenses/by-nc-nd/4.0/
| Summary: | The objective of this study is to propose a mixed integer non linear programming formulation to find the phases with it's compositions of a non ideal equilibrium system, given the Temperature, the Pressure, the feed and the substances on equilibruim. Phase equilibruim calculation has an important role in problems of separation processes (Rossi, Cardozo-Filho, & Guirardello, 2009). For this reason the evaluation of a solution strategy that let's us solve phase equilibrium calculations correctly is very important. To solve the problem of phase equilibrium calculations it's necesary to find the global minimum of Free Gibbs Energy. To find this minimum the "Branch and Reduce Optimization Navigator" BARON algorithm is going to be used (Tawarmalani & Sahinidis, 2005). Water-Ethanol-Hexane equilibrium at 1 bar with NRTL model was evaluated using BARON algorithm. The results for phase equilibrium calculations on the Water-Ethanol-Hexane system using BARON were compared with experimental data got by (Gomis, Font, Pedraza, & Saquete, 2007). BARON was able to solve 62.22% of proposed problems with experimental data. BARON results fits with precision 94.67% and 96.97% for the vapor and liquid phase repectively in vapor-liquid equilibrium, acording to reported values of R2.For vapor-liquid-liquid equilibrium the maximum diference between BARON and experimental composition was 0.066, and the mean difference was 0.024.--Tomado del Formato de Documento de Grado. |
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