CRISTINA POPA, CRISTIAN PATRASCIOIU<br>New Approach in Modelling, Simulation and Hierarchical <br>Control of the Fluid Catalytic Cracking Process <br>I - Process modelling

CRISTINA POPA, CRISTIAN PATRASCIOIU
New Approach in Modelling, Simulation and Hierarchical
Control of the Fluid Catalytic Cracking Process
I - Process modelling

Abstract:

From the economical point of view, the fluid catalytic cracking plant represents one of the most important plants on a refinery platform. Due to this reality, many researcher teams have approached partially aspects regarding this process modeling, simulation or automatic control. The authors of the present article have approached the integral problem in an original manner, starting with the process modeling and ending with the elaboration of the control hierarchical structure. The article is structured on two parts: I - Process modelling, II - Hierarchical control. In the first part there is presented the decomposition of the complex fluid catalytic cracking process into sub-processes, each sub-process being characterized by the output - input values and by dynamic characteristics. The very fast sub-processes have been modelled in a steady-state regime, and for the slow sub-processes there were elaborated dynamic models. The authors have given a special attention to the stage of adaptation of the mathematical model in a steady-state regime, the parameters of the kinetic model being adapted depending on the operation industrial data. Based on the mathematical models, the authors have elaborated a system of programs designed for the simulation in steady -state and dynamic regime of the fluid catalytic cracking process. The results obtained allowed for the validation of the mathematical model of the fluid catalytic cracking process, thus ensuring the premises of the hierarchical control approach. Keywords: fluid catalytic cracking, steady-state model, dynamic model

Issue: 2010, Volume 61, Issue 4

Pages:

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