Asymmetrical temperature control of a BTX dividing-wall distillation column

Yuan, Yang; Huang, Kejin; Chen, Haisheng; Zhang, Liang; Wang, Shaofeng

doi:10.1016/j.cherd.2017.04.023

Cited by 24 publications

(18 citation statements)

References 21 publications

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“…Although simple temperature control structure is widely used due to its great industrial prospect, it may lead to a steady-state deviation for the control of DWCs. More advanced temperature control structures were proposed and studied for the dynamic control of DWCs (e.g., asymmetrical temperature control, double temperature difference control, and pressure-compensated temperature control structures), ,, and the application of these advanced temperature control schemes to handle the industrial control of the KDWC need to be further studied in the future due to more complex issues, like pressure disturbance in the column, impurity sources, and higher control requirement.…”

Section: Discussionmentioning

confidence: 99%

“…The lateral mixing of liquid and vapor in the central region is prevented by the introduction of a divided wall into the cylindrical distillation column, and additional separate feed and outlet sections can also be incorporated. This creative method was first proposed by Petyluk for separating ternary mixtures and then further developed by Kaibel, Agrawal, and others. − With numerous efforts applied to the use of a DWC to separate ternary components during recent decades, − many three-product DWCs have been implemented industrially around the world. For instance, more than 100 DWCs , are operated industrially by the BASF of Germany.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Numerical and Experimental Research on a Kaibel Divided-Wall Column: Design and Steady-State and Dynamic Operation

Pan

Guichun

et al. 2020

Ind. Eng. Chem. Res.

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This work investigated the full design, startup, operation, and control of a Kaibel divided-wall column (KDWC) for a laboratoryscale KDWC. The KDWC is designed to separate mixtures of methanol, ethanol, n-propanol, and n-butanol on the basis of a rigorous model. Effective steady-state and dynamic operation strategies are then proposed to control the practical operation of the KDWC. The proposed startup operation strategy, including total reflux, batch rectification, and continuous rectification procedures, leads to a steady state, and the steady-state design method is verified through steady-state experiments. The dynamic control strategy including a four-temperature control loop is further proposed and shows effective and precise dynamic control performance, recovering the four products to the specified values in the presence of ±20% feed disturbances. This work provides deep insight into the realization and control of a practical KDWC and will increase the possibility of industrial achievement and optimal operation of the KDWC.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Numerical and Experimental Research on a Kaibel Divided-Wall Column: Design and Steady-State and Dynamic Operation

Pan

Guichun

et al. 2020

Ind. Eng. Chem. Res.

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“…Nedavni rad Yuana i sur. 9 pokazuje da čak i jednostavni sustav za vođenje s četiri stabilizacijska temperaturna regulacijska kruga može P58 djelotvorno suzbiti razne poremećaje za KRS za tri proizvoda.…”

unclassified

Vođenje destilacijske kolone s razdjelnom stijenkom za četiri proizvoda

Lukač¹,

Jazbec²,

Crnković³

et al. 2018

Kem. Ind.

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P57U ovom radu istražuju se mogućnosti vođenja kompleksne konfiguracije destilacijske kolone s razdjelnim stijenkama (KRS) za četiri proizvoda. Simulacijski su ispitane dvije izvedbe sustava za vođenje. Na temelju statičkog modela destilacijske kolone razvijene su dinamičke simulacije tih dviju izvedba, a njihov učinak testiran je uvođenjem poremećaja u sustav. Rezultati pokazuju da je za uspješno vođenje i postizanje zahtijevane kvalitete proizvoda potrebna vrlo čvrsta regulacija temperaturnih profila unutar kolone, ali i da je to moguće postići konvencionalnim metodama vođenja, odnosno primjenom regulacije PID. Kolona s razdjelnom stijenkom, vođenje, PID regulacija

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“…Stefano Ciannella [12] presented industrial hotvapor bypass method to pressure control in distillation columns to separation of water and ethanol. The asymmetrical temperature controller for BTX dividing-wall distillation column was given by Yang Yuan et al [13]. The plant-wide control for coupled distillation columns with partial condensers has been presented by Ebrahimzadeh and Baxter [14].…”

Section: Introductionmentioning

confidence: 99%

“…Apart from several advantages, nonlinear based control method has challenges associated with industrial system applications. Various researcher were used industrial techniques to control of distillation column [12][13][14]. Stefano Ciannella [12] presented industrial hotvapor bypass method to pressure control in distillation columns to separation of water and ethanol.…”

Section: Introductionmentioning

confidence: 99%