Development of Dividing Wall Distillation Column Design Space for a Specified Separation

Muralikrishna, K.; Madhavan, K.P.; Shah, Suresh Somalal

doi:10.1205/026387602753501870

Cited by 42 publications

(31 citation statements)

References 9 publications

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“…The Petlyuk column (Petlyuk et al, 1965) consists of a prefractionator followed by a main column from which three product streams are obtained (see Figure 1), and this arrangement has been shown to provide higher energy savings than the systems with side columns, with savings of up to 30% when compared to conventional schemes (Glinos and Malone, 1988;Fidkowski and Krolikowski, 1990). Such results have promoted the development of more formal design methods, such as those reported by Triantafyllou and Smith (1992), Hernández and Jiménez (1999a), Amminudin et al (2001), and Muralikrishna et al (2002). To promote a stronger potential for its industrial implementation, a proper understanding of the operation and control properties of the Petlyuk system are also needed.…”

Section: Introductionmentioning

confidence: 93%

Control and Energy Savings of the Petlyuk Distillation System

Rodríguez

Moreno

Segovia‐Hernández

et al. 2007

IFAC Proceedings Volumes

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The Petyuk distillation system has gained considerable attention because of the energy savings it can provide with respect to the conventional distillation sequences. Since the structure of the Petlyuk system is more complex, its controllability properties may be adverse with respect to the conventional systems. In this work a closed-loop analysis of the Petlyuk distillation system is presented. Special attention is given to show how the control properties change when different operating conditions are used. The results show that the control properties of the Petlyuk column can improve if some degradation in the energy consumption level is allowed.

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Section: Introductionmentioning

confidence: 93%

Control and Energy Savings of the Petlyuk Distillation System

Rodríguez

Moreno

Segovia‐Hernández

et al. 2007

IFAC Proceedings Volumes

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“…In order to check the validity of the above method, the data of Muralikrishna et al [7] was used, Tab Table 3. The data of Muralikrishna et al [7], which ar e used in the introductory example to verify the design method.…”

Section: Verification Of the Modelmentioning

confidence: 99%

“…The data of Muralikrishna et al [7], which ar e used in the introductory example to verify the design method. …”

Section: Verification Of the Modelmentioning

confidence: 99%

“…Apart from the work of Cerda and Westerberg [5], Triantafyllou and Smith [6] and Muralikrishna et al [7], all of the work published on such models has used done minimum vapor flow calculations without consideration of the number of plates and internal reflux values. Hence, none of these models can provide either a basis for preliminary optimization or an initial solution for a rigorous simulation.…”

Section: Introductionmentioning

confidence: 99%

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A Method for the Design of Divided Wall Columns

Sotudeh

Shahraki

2007

Chem Eng & Technol

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“…The savings depend on the amount of the intermediate component in the feed mixture, and are more noticeable for feeds with low or high contents of the intermediate component. More recent works have reported the use of optimization strategies for TCDS to detect designs with minimum energy consumption under un-pinched (finite reflux) conditions [4], [16], [18], [26], [38]. When the performance of the three integrated schemes has been compared, it has been found that in general the Petlyuk system offers better energy savings than the systems with side columns.…”

Section: Introductionmentioning

confidence: 99%

Control Performance of Thermally Coupled Distillation Sequences with Unidirectional Flows

Segovia‐Hernández¹,

Hernández²,

Jiménez³

Selected Topics in Dynamics and Control of Chemical and Biological Processes

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Summary. The Petlyuk distillation system has been considered with special interest in the field of separation processes because of the high energy savings that it can provide with respect to the operation of sequences based on conventional columns. The original design of the Petlyuk structure, however, shows two interconnections that seem to affect its operational and controllability properties. For one thing, the arrangement is more complex than the common structure of the conventional distillation systems of one feed and two products with no recycle streams. Furthermore, the interconnections show a bidirectional flow of the vapor streams between the two columns of the Petlyuk arrangement, posing a major control challenge for its operation. To overcome this problem, two new structures have been suggested that use unidirectional flows of the vapor or liquid interconnecting streams. The new options have been conceptually developed to improve the controllability properties of the Petlyuk system, but no formal analysis has been conducted on this matter. In this work, a comparative analysis of the control properties of the Petlyuk column and the new arrangements with unidirectional interconnecting flows is presented. Through a singular value decomposition analysis, it is shown that the new schemes provide better theoretical controllability properties than the Petlyuk system. Closed loop tests using proportional-integral controllers were also carried out, and the results showed that, in most of the cases considered, the new arrangements improved the dynamic responses of the Petlyuk column. Such arrangements, therefore, show promising perspectives for its practical consideration.

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Development of Dividing Wall Distillation Column Design Space for a Specified Separation

Cited by 42 publications

References 9 publications

Control and Energy Savings of the Petlyuk Distillation System

Control and Energy Savings of the Petlyuk Distillation System

A Method for the Design of Divided Wall Columns

Control Performance of Thermally Coupled Distillation Sequences with Unidirectional Flows

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