Optimización y control de un proceso de mezclas Rundown para la fabricación de gasolinas

• González-Martín, Rafael ^[2] ; Morilla, Fernando ^[1]
  1. [1] Universidad Nacional de Educación a Distancia

     Universidad Nacional de Educación a Distancia

     Madrid, España

     
  2. [2] Petroleos del Norte S.A.
• Localización: Revista iberoamericana de automática e informática industrial ( RIAI ), ISSN-e 1697-7920, Vol. 16, Nº. 3, 2019, págs. 284-295
• Idioma: español
• DOI: 10.4995/riai.2019.10639
• Títulos paralelos:
  • Gasoline rundown blender Process Optimization and Control
• Enlaces
  • Texto completo
• Resumen
  • español

    La gasolina comercial es una mezcla de componentes obtenidos de la destilación del petróleo. El reto del Sistema de Optimización y Control es maximizar el margen económico del proceso utilizando la mezcla de componentes más barata, satisfaciendo la composición de las mezclas, los inventarios, la disponibilidad de las unidades de producción y las restricciones hidráulicas de las líneas. La complejidad de estos sistemas de mezcla ha ido aumentando debido a la competencia creciente en el sector, las refinería más competitivas realizan las mezclas con componentes que provienen directamente de unidad sin pasar por almacenamiento intermedio, método rundown, se disminuyen inventarios y se aumenta el beneficio. En este artículo se presenta un método innovador consistente en aplicar distintos niveles de automatización emulando la estrategia de control en cascada. Los resultados obtenidos en simulación han permitido aplicar el método propuesto en una instalación real, donde se ha podido contrastar la bondad del método y su generalización a un sistema con dimensionamiento real.

  • English

    Commercial gasoline is a blend of components obtained from the crude oil distillation processes. The Optimization and Control system challenge is maximizing the profit by choosing the less expensive components blend, honoring the process constraints such blend properties, tank inventories, components availability and hydraulic constraints among others. The increasing competitiveness in the oil refining industry has led the blending process to be more and more complex, blending components are tend to be used directly from process units instead of using intermediate tanks (rundown blender), the additional economical margin is huge. This paper presents a simply but practical approach to address this blending process problems by emulating the cascade control strategy, two MPC controllers are cascaded to the optimizer algorithm. The good results obtained in the simulation stage have enabled applying the approach in a real blending process where the good performance of the method has been confirmed.

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