Comparative control study of a simulated batch rectifier

Jana, Amiya K.; Sinha, Raja

doi:10.1016/j.compchemeng.2011.09.013

Cited by 3 publications

(2 citation statements)

References 13 publications

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“…We should note an interesting behavior in Figure that immediately after the production phase is started, there is an oscillatory nature of Δ T T that continues for sometimes with decreasing amplitude. We obtain this type of response mainly because of two reasons: , the sudden shifting of total reflux operation to partial reflux mode, and (ii) the withdrawal of side product with a reasonably large flow rate. Anyway, the simulation results show that the maximum Δ T T is obtained at the end point (at 135th min (say at t 1 -th time)).…”

Section: Simulation Resultsmentioning

confidence: 99%

An Adaptive Vapor Recompression Scheme for a Ternary Batch Distillation with a Side Withdrawal

Babu

Pal

Jana

2012

Ind. Eng. Chem. Res.

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Batch distillation is known to be less energy efficient than its continuous counterpart. However, it has received renewed interest last years owing to the flexibility it offers. In an effort to reduce energy consumption, a batch distillation with a side withdrawal (BDS) was proposed recently. In this contribution, we first construct the fundamental model for an unsteady state BDS process and simulate the column to derive an operational policy. Although the representative process was proved as an energy efficient scheme, in order to improve further the thermodynamic efficiency of the BDS structure, we propose an adaptive vapor recompression mechanism that considers the top vapor recompression with a variable speed. Apart from the compression ratio (CR), the other two manipulated variables involved are the external heat input to the reboiler through steam and the flow rate of overhead vapor entering the compressor. It is investigated that the two manipulated variables are required to adapt simultaneously throughout the batch operation; one is the CR and another one is either the heat input to the still or the overhead vapor rate. Finally, the influence of the adaptive vapor recompression scheme on the energetic and economic aspects is evaluated through intensive comparison against the conventional stand alone column. The proposed adaptive vapor recompression strategy appears overwhelmingly superior to its conventional counterpart in terms of thermal efficiency and economic performance.

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Section: Simulation Resultsmentioning

confidence: 99%

An Adaptive Vapor Recompression Scheme for a Ternary Batch Distillation with a Side Withdrawal

Babu

Pal

Jana

2012

Ind. Eng. Chem. Res.

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“…Moreover, batch distillation control as another direction also was widely investigated to ensure stable operational behavior. Using proposed Luenberger-like nonlinear estimator (LNE) and the feedback linearizing controller (FLC) the discrepancy of process/model mismatch was efficiently corrected [14]. A technique for nonlinear system identification and model reduction using artificial neural networks was proposed and was succeeded in applying for batch distillation control [15].…”

Section: Introductionmentioning

confidence: 99%

A Short-Cut Design Technique to Batch Distillation Column

Wu¹

2019

ACES

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The effects of equipment parameters of batch distillation column on the yield proportion are discussed and analyzed, the relations between maximal yield proportion and the column equipment parameters are correlated, which not only can be used to appraise rationality of the design parameters of the columns being employed and which but also can be used to new batch distillation column design. Under the assistance of the separation difficulty defined in this paper, the minimum number of theoretical plates is determined by the limit loss proportion method given, and further the actual number of theoretical plates and the height for the batch distillation are calculated by using the redundancy coefficient found to complete the whole design of the batch distillation as shown in the computational sample. Research showed that the actual number of theoretical plates and the height of batch distillation column with the column diameter 0.6 m are 17 and 5.1 m in alcohol mixture separation system of the sample proposed. Moreover, the approach can be extended to the design of batch distillation column with a separation system of multi-component liquid mixture after those adjacent components are treated as numerous binary component systems.

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Differential Geometry-Based Adaptive Nonlinear Control Law: Application to an Industrial Refinery Process

Jana

2013

IEEE Trans. Ind. Inf.

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Comparative control study of a simulated batch rectifier

Cited by 3 publications

References 13 publications

An Adaptive Vapor Recompression Scheme for a Ternary Batch Distillation with a Side Withdrawal

An Adaptive Vapor Recompression Scheme for a Ternary Batch Distillation with a Side Withdrawal

A Short-Cut Design Technique to Batch Distillation Column

Differential Geometry-Based Adaptive Nonlinear Control Law: Application to an Industrial Refinery Process

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