A Quasi-steady-state Model for Numerical Simulation of Batch Extractive Distillation

Abstract Batch extractive distillation (BED) is a special method used in the distillation process by adding a solvent into the batch distillation column to alter the relative volatility of the components and improve the separation. A comprehensive design and simulation method is required due to the complexity of BED. In this study, a quasi-steady-state model for BED is proposed, the derivation and solution of the model are presented. This shortcut model can be used to simulate the composition and temperature of the reboiler, the top and other plates of the column in a batch extractive distillation operation. The calculated values are in good agreement with the experimental data. The results show that the quasi-steady-state model is a practical method because of some advantages such as high precision and fast calculation.

[1]  Massimiliano Barolo,et al.  Some issues in the design and operation of a batch distillation column with a middle vessel , 1996 .

[2]  Z. Lelkes,et al.  Homoazeotropic distillation of maximum azeotropes in a batch rectifier with continuous entrainer feeding I. Feasibility studies , 2000 .

[3]  Zoltan Lelkes,et al.  Feasibility of Extractive Distillation in a Batch Rectifier , 1998 .

[4]  Peter Lang,et al.  Dynamic simulation of a batch extractive distillation process , 1993 .

[5]  An-I Yeh,et al.  The unusual behavior of extractive distillation—Reversing the volatility of the acetone–isopropyl ether system , 1985 .

[6]  Pascal Floquet,et al.  Heterogeneous Batch Distillation Processes: Real System Optimisation , 2008 .

[7]  Cui Xb,et al.  Batch Extractive Distillation in a Column with a Middle Vessel , 2002 .

[8]  Sandro Macchietto,et al.  Simultaneous optimization of design and operation of multicomponent batch distillation column—single and multiple separation duties , 1996 .

[9]  Zoltan Lelkes,et al.  Batch extractive distillation: the process and the operational policies , 1998 .

[10]  Peter Lang,et al.  Batch extractive distillation under constant reflux ratio , 1994 .

[11]  Sigurd Skogestad,et al.  Analysis and control of heteroazeotropic batch distillation , 2005 .

[12]  Homoazeotropic distillation of maximum azeotropes in a batch rectifier with continuous entrainer feeding II. Rigorous simulation results , 2000 .

[13]  Urmila M. Diwekar,et al.  Extending Continuous Conventional and Extractive Distillation Feasibility Insights to Batch Distillation , 1995 .

[14]  Pu Li,et al.  Simulated annealing for the optimization of batch distillation processes , 2000 .

[15]  S. Skouras,et al.  Feasible separations and entrainer selection rules for heteroazeotropic batch distillation , 2005 .

[16]  Bhaskar D. Kulkarni,et al.  Consider genetic algorithms to optimize batch distillation , 2001 .