Show simple item record Souza, Jeferson Avila Vargas, Jose Viriato Coelho Ordonez, Juan Carlos Martignoni, Waldir Pedro Meien, Oscar Felippe von 2015-07-30T17:20:19Z 2015-07-30T17:20:19Z 2011
dc.identifier.citation SOUZA, J. A. et al. Thermodynamic optimization of fluidized catalytic cracking (FCC) units. International Journal of Heat and Mass Transfer, v. 54, n. 5-6, p. 1187-1197, 2011. Disponível em: <>. Acesso em: 20 jul. 2015. pt_BR
dc.identifier.issn 0017-9310
dc.description.abstract In this paper, a thermodynamic optimization procedure for FCC riser units has been developed. The formulation uses a 2D fluid flow and kinetic model to provide the necessary information for the optimization process. The thermodynamic analysis is based on the unit entropy generation minimization, i.e., the minimization of the destroyed exergy in the system. This kind of analysis has been widely used in power generation plants, with large benefits. It was verified that for any given catalyst mass flow rate, there exists an optimum value for the catalyst to oil mass flow rate ratio, COR, for maximum mass flow rate production of gasoline, or any other desired product. Next, the objective function (net exergy production rate) was maximized through the minimization of the destroyed exergy inside the FCC unit. The optimization was conducted with respect to the catalyst to oil ratio (COR). It is important to stress that all optima are sharp, i.e., for example with H/D = 50, the variation ofeE net is greater than 50%, calculated from ðeE net; max eE net; minÞ=eE net; max for 5 < COR < 25. Based on the lack of second law analysis related works for FCC plants in the technical literature and in view of the potential gains suggested by the results, the authors believe that thermodynamic optimization could bring new insight in the quest for better FCC plants. Therefore, a low computational time tool is made available for simulation, control, design and optimization of FCC units. pt_BR
dc.language.iso eng pt_BR
dc.rights open access pt_BR
dc.subject Fluidization pt_BR
dc.subject Petroleum pt_BR
dc.subject Reactor analysis pt_BR
dc.subject Computational chemistry pt_BR
dc.subject Exergetic analysis pt_BR
dc.subject Mathematical model pt_BR
dc.title Thermodynamic optimization of fluidized catalytic cracking (FCC) units pt_BR
dc.type article pt_BR
dc.identifier.doi 10.1016/j.ijheatmasstransfer.2010.10.034 pt_BR

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