Design of Operation Policies for Batch Distillation

Macchietto, Sandro; Mujtaba, Iqbal M.

doi:10.1007/978-3-642-60972-5_9

Cited by 11 publications

(5 citation statements)

References 43 publications

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“…We observe that total reflux operation results in an ethyl acetate concentration of up to 51%, which agrees well with the experimental and simulation results reported by Savkovic-Stevanovic et al (1992). Macchietto and Mujtaba (1995), however, give high value of purity (75%). We again assume that the differences in the results are mainly due to the difference in physical properties data.…”

Section: Fe Simulation Applied To Reactive Distillationsupporting

confidence: 93%

“…The offcuts produced could be used to recycle the reactants provided that a suitable reprocessing scheme is established. This leads to the consideration of the optimization of the operation of an entire campaign of batches (Macchietto and Mujtaba, 1995) rather than focusing on the processing of a single batch (Wajge and Reklaitis, 1995).…”

Section: Fe Simulation Applied To Reactive Distillationmentioning

confidence: 99%

“…The ancient chemical engineering operation of batch distillation has regained the attention of chemical engineers in manufacturing environments, where demand does not justify a dedicated continuous separation facility (Macchietto and Mujtaba, 1995). Specifically, batch distillation in packed columns has been recognized as an effective method for carrying out separation of fine chemicals that is both more flexible and often cheaper than a staged column (Srivastava and Joseph, 1984).…”

Section: Introductionmentioning

confidence: 99%

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Investigation of Numerical Solution Approaches to Multicomponent Batch Distillation in Packed Beds

Wajge

Wilson

Pekny

et al. 1997

Ind. Eng. Chem. Res.

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Finite difference and orthogonal collocation techniques are used to obtain numerical solution of the differential contactor model that represents a packed column. In the orthogonal collocation approach, polynomial approximation to the model equations results in a sparse system of equations that is much smaller in dimension than with the other methods. Exploiting this sparsity and choosing the proper order for approximating polynomial are the critical issues. Higher CPU time associated with higher order of the polynomial necessitates use of finite elements in the collocation techniques. We study the accuracy and efficiency issues underlying all these approaches with the help of hydrocarbon mixture and ethanol esterification examples. The later case study is considered with both with and without the presence of reaction.

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Section: Fe Simulation Applied To Reactive Distillationsupporting

confidence: 93%

Section: Fe Simulation Applied To Reactive Distillationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Investigation of Numerical Solution Approaches to Multicomponent Batch Distillation in Packed Beds

Wajge

Wilson

Pekny

et al. 1997

Ind. Eng. Chem. Res.

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“…More recently, a number of studies were published in the field of batch distillation, but they were related mainly to the modeling, simulation, and optimization of batch columns. , Relatively few papers addressed the issue of feedback control of a conventional (i.e., rectifying) batch column. Quintero-Marmol et al and Quintero-Marmol and Luyben studied the feedback control of a constant-reflux-ratio-operated batch column.…”

Section: Summary Of Previous Findingsmentioning

confidence: 99%

Composition Control in Batch Distillation: Binary and Multicomponent Mixtures

Barolo

Berto

1998

Ind. Eng. Chem. Res.

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A strategy is proposed for the control of constant-distillate-composition operations of batch distillation columns. The proposed control law is derived in the framework of Nonlinear Internal Model Control. The distillate composition is estimated from selected tray temperature measurements by an observer. The same observer provides the estimate of the system states that are necessary for the computation of the control algorithm. Results are provided for binary and multicomponent separations of ideal and nonideal systems. Several sources of process/model mismatch are considered in order to provide a realistic test scenario for the proposed procedure. It is shown that the proposed controller ensures fast and smooth transition from the startup phase to the production phase, and tight composition control until the end of the operation. Moreover, the tuning of the controller is performed very easily. Finally, the on-line computation of the control law is straightforward, which is a promising result toward practical implementation of the proposed method.

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“…En la mayoría de los trabajos de optimización en destilación por lotes, diseñan una trayectoria óptima para alguna variable, típicamente el reflujo (o la relación de reflujo) que posteriormente implementan a lazo abierto mediante algún esquema de control (Macchietto y Mujtaba, 1992). Lo que implica que no hay corrección por retroalimentación si la salida a regular diverge de su trayectoria deseada.…”

Section: Optimizaciónunclassified

Diseño de la operación y el control para columnas de destilación binarias por lotes

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Design of Operation Policies for Batch Distillation

Cited by 11 publications

References 43 publications

Investigation of Numerical Solution Approaches to Multicomponent Batch Distillation in Packed Beds

Investigation of Numerical Solution Approaches to Multicomponent Batch Distillation in Packed Beds

Composition Control in Batch Distillation: Binary and Multicomponent Mixtures

Diseño de la operación y el control para columnas de destilación binarias por lotes

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