Estudio del proceso de producción de la Refinería “Sergio Soto Valdés”, a partir de los balances de masa y energía, con y sin incertidumbre, y la integración de procesos
Fecha
2019
Autores
Rojas Gutiérrez, Juan Manuel
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Universidad Central ``Marta Abreu`` de Las Villas. Facultad de Química y Farmacia. Departamento de Ingeniería Química
Resumen
En este trabajo se realizaron los balances de masa y energía del proceso, sin y con incertidumbre en los datos de entrada. Para un crudo de inyecto de 1000 t/d se obtuvieron las siguientes cantidades de productos: 1737,5 kg/h de nafta, 3625 kg/h de queroseno, 101 033,84 kg/h de diésel, 26 020,84 kg/h de crudo reducido de la torre atmosférica y 1301,04 kg/h de reflujo del tope, 1040,83 kg/h de diésel al vacío, 1540,43 kg/h de fuel (R3), 2607,28 kg/h de fuel (R2), 20 832,28 kg/h de asfalto. Cuando se considera la incertidumbre en los balances de masa y energía se obtuvo una alta variabilidad en las variables de salida debido al efecto de la variable incierta considerada, el crudo de inyecto. Se obtienen que 22 variables de salida se ajustan a la distribución de Erlang y 30 a la distribución normal.
Se realizó, utilizando el software Hensad Pinch, una integración energética para minimizar el consumo de servicios calientes y fríos aprovechando la entalpía de las diferentes corrientes del proceso. Como resultado del mismo se obtuvo:
La temperatura Pinch se tiene para las curvas de composición de las dos corrientes y son temperatura Pinch caliente igual 55 °C, temperatura Pinch fría igual 25 °C. Se puede decir que existe un área de transferencia de calor de 198 m2, se necesitan 43,1 kW de calefacción mediante un servicio caliente y 46,3 KW de refrigeración mediante un servicio frío, al no haber una variación en el área de intercambiador requerida, se sugiere entonces trabajar a valores de ΔT lo más cercano posibles a 27 y con ello trabajar con los menores consumos de utilidades caliente y fría posibles
In this work the mass and energy balances of the process were performed, without and with uncertainty in the input data. For a crude oil injection of 1000 t / d the following quantities of products were obtained: 1737.5 kg / h of naphtha, 3625 kg / h of kerosene, 101 033.84 kg / h of diesel, 26 020.84 kg / h of reduced crude of the atmospheric tower and 1301.04 kg / h of reflux of the stop, 1040.83 kg / h of vacuum diesel, 1540.43 kg / h of fuel (R3), 2607.28 kg / h of fuel (R2), 20 832.28 kg / h of asphalt. When considering the uncertainty in the mass and energy balances, a high variability in the output variables was obtained due to the effect of the uncertain variable considered, the inject crude. We obtain that 22 output variables conform to the Erlang distribution and 30 to the normal distribution. Using the Hensad Pinch software, an energy integration was made to minimize the consumption of hot and cold services, taking advantage of the enthalpy of the different streams of the process. As a result of it, we obtained: The Pinch temperature is for the composition curves of the two currents and is hot Pinch temperature equal 55 ° C, cold Pinch temperature equal 25 ° C. It can be said that there is a heat transfer area of 198 m2, 43.1 kW of heating are needed through a hot service and 46.3 KW of cooling through a cold service, as there is no variation in the required exchanger area. , it is then suggested to work at values of ΔT as close as possible to 27 and thereby work with the lowest possible consum tion of hot and cold utilities
In this work the mass and energy balances of the process were performed, without and with uncertainty in the input data. For a crude oil injection of 1000 t / d the following quantities of products were obtained: 1737.5 kg / h of naphtha, 3625 kg / h of kerosene, 101 033.84 kg / h of diesel, 26 020.84 kg / h of reduced crude of the atmospheric tower and 1301.04 kg / h of reflux of the stop, 1040.83 kg / h of vacuum diesel, 1540.43 kg / h of fuel (R3), 2607.28 kg / h of fuel (R2), 20 832.28 kg / h of asphalt. When considering the uncertainty in the mass and energy balances, a high variability in the output variables was obtained due to the effect of the uncertain variable considered, the inject crude. We obtain that 22 output variables conform to the Erlang distribution and 30 to the normal distribution. Using the Hensad Pinch software, an energy integration was made to minimize the consumption of hot and cold services, taking advantage of the enthalpy of the different streams of the process. As a result of it, we obtained: The Pinch temperature is for the composition curves of the two currents and is hot Pinch temperature equal 55 ° C, cold Pinch temperature equal 25 ° C. It can be said that there is a heat transfer area of 198 m2, 43.1 kW of heating are needed through a hot service and 46.3 KW of cooling through a cold service, as there is no variation in the required exchanger area. , it is then suggested to work at values of ΔT as close as possible to 27 and thereby work with the lowest possible consum tion of hot and cold utilities
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Refinería “Sergio Soto Valdés”, Sancti Spíritus, Industria Petrolera, Transferencia de Calor, Gestión Energética, Industria de Procesos