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Analyse économique de l'unité de séparation de la production de méthanol en propylène basée sur l'optimisation des cycles frigorifiques à l'aide de l'analyse du pincement et de l'analyse exergétique.

Economic analysis of separation unit of methanol to propylene production based on optimization of refrigeration cycles using pinch and exergy analysis.

Auteurs : SAFARI D., KASIRI N., KHALILI-GARAKANI A., MAFI M.

Type d'article : Article de la RIF

Résumé

In this study, optimization and economic analysis of the separation of light gases in the methanol to propylene, MTP, process along with refrigeration cycles design are performed, by using pinch and exergy analysis. In the course of the separation process optimization and refrigeration cycles design, by using a Visual Basic, VB, program and genetic algorithm, GA, rigorous distillation simulation is carried out, then streams information is employed to find optimum temperature levels, corresponding to tower condenser temperature, by minimizing the areas between the Exergy Grand Composite Curve, EGCC, and constant temperature levels of refrigeration cycles. Economic calculations were performed to obtain the lowest total annual cost, TAC, for refrigeration cycles, towers and other equipment. Two cases of the direct and indirect sequences are examined through the developed framework, inspection of their results represents that the operational cost has a significant contribution to the TAC. As a result, heat integration would reduce it by nearly 60%. Also, scrutinized analysis of the optimization results, especially by considering the TAC and its contributions, for the direct and indirect sequences, leads to the conclusion that indirect sequence would exhibit lower cost for light gas separation. The framework represented herein paves a way to the systematic design of integrated low-temperature separation processes with refrigeration cycles.

Documents disponibles

Format PDF

Pages : 108-117

Disponible

  • Prix public

    20 €

  • Prix membre*

    Gratuit

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Economic analysis of separation unit of methanol to propylene production based on optimization of refrigeration cycles using pinch and exergy analysis.
  • Identifiant de la fiche : 30030875
  • Langues : Anglais
  • Sujet : Technologie
  • Source : International Journal of Refrigeration - Revue Internationale du Froid - vol. 146
  • Date d'édition : 02/2023
  • DOI : http://dx.doi.org/10.1016/j.ijrefrig.2022.09.029

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