Integración energética y análisis exergético de la red de intercambiadores de calor en la Refinería “Sergio Soto Valdés”
Fecha
2016-06
Autores
Simón Sánchez, Dayana
Título de la revista
ISSN de la revista
Título del volumen
Editor
Universidad Central “Marta Abreu” de Las Villas. Facultad de Química Farmacia. Departamento de Ingeniería Química
Resumen
En este trabajo se realizó la integración energética y el análisis exergético de la red de intercambiadores de calor en la refinería “Sergio Soto Valdés” de Cabaiguán, para ello se desarrollaron los balances de masa y energía en las secciones de destilación atmosférica al vacío.
El análisis exergético se desarrolló en la red de intercambio de calor determinándose las pérdidas y las eficiencias exergéticas de las unidades que componen la red. Se obtuvieron las mayores eficiencias en los equipos intercambiadores con valores cercanos al 100% y los peores resultados para los condensadores y enfriadores para los que se reportaron eficiencias desde 31 - 85% y desde 49-97% respectivamente.
Por último, se realiza un análisis de integración energética, para lo cual se empleó el ASPEN PINCH. El estudio de integración incluyó la determinación del requerimiento mínimo de utilidades calientes y frías del proceso. Se determinó la diferencia mínima de temperatura óptima para la red de intercambio de calor, así como otros parámetros relacionados con el costo de las utilidades y de la red. El diagrama de rejillas obtenido mostró el número mínimo de unidades de intercambio y las violaciones existentes en la
red que significan en 918 kW. El costo mínimo de la red de intercambio es de $ 318 122 por año y el costo de la energía resultó $146 051 por año.
In this paper was performed the energy integration and network exergy analysis of heat exchangers in the "Sergio Soto Valdes" Cabaiguán, this refinery mass balances and energy were developed in sections of atmospheric vacuum distillation was performed. The exergy analysis was developed in the heat exchange network determining losses and exergy efficiencies of the units that make up the network. The highest efficiencies were obtained in equipment exchangers with values close to 100% and the worst results for the condensers and coolers for that efficiencies were reported from 31 to 85% and from 49 to 97% respectively. Finally, an analysis of energy integration is performed, for which the ASPEN PINCH was used. The integration study included the determination of the minimum requirement of hot and cold process utilities. the minimum difference of optimum temperature for heat exchange network was determined, as well as other parameters related to the cost of utilities and network. The grids diagram obtained showed the minimum number of units existing and network violations with a meaning of 918 kW. The minimum cost heat exchange network is 318,12 $/year and the cost of energy was 146,051 $/year.
In this paper was performed the energy integration and network exergy analysis of heat exchangers in the "Sergio Soto Valdes" Cabaiguán, this refinery mass balances and energy were developed in sections of atmospheric vacuum distillation was performed. The exergy analysis was developed in the heat exchange network determining losses and exergy efficiencies of the units that make up the network. The highest efficiencies were obtained in equipment exchangers with values close to 100% and the worst results for the condensers and coolers for that efficiencies were reported from 31 to 85% and from 49 to 97% respectively. Finally, an analysis of energy integration is performed, for which the ASPEN PINCH was used. The integration study included the determination of the minimum requirement of hot and cold process utilities. the minimum difference of optimum temperature for heat exchange network was determined, as well as other parameters related to the cost of utilities and network. The grids diagram obtained showed the minimum number of units existing and network violations with a meaning of 918 kW. The minimum cost heat exchange network is 318,12 $/year and the cost of energy was 146,051 $/year.
Descripción
Palabras clave
Refinería “Sergio Soto Valdés”, Cabaiguán, Petróleo Crudo, Proceso de Refinación, Medio Ambiente, Balances de Masa, Balances Exergéticos