Dynamic optimization of the benzene extractive distillation unit

Brazilian Journal of Chemical Engineering

A. Ghaee¹  R. Sotudeh-gharebagh¹  N. Mostoufi¹ 

[1] ,University of Tehran Faculty of Engineering Department of Chemical EngineeringTehran,Iran

关键词: Benzene extractive distillation;    Process modeling;    Dynamic optimization;    N-formylmorpholine (NFM);   

DOI  :  10.1590/S0104-66322008000400014

来源: SciELO

【 摘 要 】

A mathematical model has been developed for describing the dynamic operation of the N-formylmorpholine extractive distillation column and the corresponding solvent recovery column in the benzene extraction plant. The NRTL equation was used to calculate the equilibrium and thermodynamic properties of the mixtures. The validity of the model in terms of temperature, pressure and split fraction was examined using actual plant data at steady-state conditions. Comparison between model results and plant data shows good consistency. In order to improve the control of the process and selection of the optimal control strategy, the model was used to find the optimum values of the constants of the controllers with Nelder-Mead algorithm during unsteady-state operation by minimizing the deviation from steady-state conditions. The outcome of this study could be used by operators and engineers to increase the productivity of the unit.

【 授权许可】

CC BY   
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