Catalyst Deactivation in Reactive Distillation

Filipe, Rui M.; Matos, Henrique A.; Novais, Augusto Q.

doi:10.1016/s1570-7946(09)70359-1

Cited by 3 publications

(5 citation statements)

References 9 publications

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“…Reaksi yang cepat dapat mengimbangi proses pemisahan yang juga terjadi secara cepat [1][2][3][4][5][6][7][8][9][10].…”

Section: Pendahuluanunclassified

“…Untuk model kinetika reaksi yang digunakan seperti tersaji pada persamaan (9). = : ; <=> (9) ? @AB merupakan berat katalis dan A9 adalah aktivitas dari komponen i, sedangkan nilai konstanta reaksi dihitung dengan persamaan Arrhenius (persamaan (10)), = 1,27 * 5C D E/ (10) Model parameter aktivitas yang digunakan adalah UNIQUAC, UNIFAC dan NRTL.…”

Section: Model Giwa Dan Karacan (2012)unclassified

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Reviu Model Distilasi Reaktif Dalam Produksi Etil Asetat

Jerry,

Ulia

2022

JTKM

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Pengembangan proses pemisahan dan reaksi secara simultan pada kolom distilasi mempunyai kelebihan yaitu, biaya investasi yang murah, dapat menggeser pembatasan oleh azeotrop, tingkat konversi yang lebih tinggi dibandingkan dengan proses pemisahan dan reaksi secara terpisah. Kelebihan yang ditawarkan distilasi reaktif menjadi ketertarikan sendiri untuk dikaji. Pemodelan distilasi reaktif melibatkan beberapa peristiwa penting, yaitu kesetimbangan fasa, kesetimbangan reaksi dan perpindahan panas. Model yang telah dikembangkan menggunakan persamaan neraca massa dan neraca energi keadaan unsteady state dan mengasumsikan terjadi kesetimbangan fasa dan reaksi setiap tahap kolom distilasi. Model yang telah dikembangkan menggunakan persamaan kinetika reaksi setiap tahap dan parameter nilai aktivitas ᵞ yang paling sesuai untuk kondisi Etil Asetat adalah UNIFAC.

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“…Reaksi yang cepat dapat mengimbangi proses pemisahan yang juga terjadi secara cepat [1][2][3][4][5][6][7][8][9][10].…”

Section: Pendahuluanunclassified

Section: Model Giwa Dan Karacan (2012)unclassified

Reviu Model Distilasi Reaktif Dalam Produksi Etil Asetat

Jerry,

Ulia

2022

JTKM

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“…As shown in Figure 7, V out,top and L in,top represent the outlet vapor flowrate and inlet liquid flowrate at the top of the pre-fractionator; y out,top,B and x out,top,B represent the middle component mole fractions of the corresponding streams; L out,botm and V in,botm represent the outlet liquid and inlet vapor flowrate at the bottom of the pre-fractionator, respectively; x out,botm,B and y in,botm,B represent the middle component mole fractions of the corresponding streams. From Equations (15) and (16), parameters R B,top and R B,botm are related to the liquid and vapor split ratio. Note that the summation of R B,top and R B,botm is 1.…”

Section: Summary Equationsmentioning

confidence: 99%

“…In Section 2, we define the middle component split ratio at the top and bottom of the pre-fractionator (Equations (15) and (16)). According to the definition, the middle component split ratio is determined by the liquid and vapor streams entering the pre-fractionator, which directly affects the overall heat duty of the DWC.…”

Section: The Middle Component Split Ratiomentioning

confidence: 99%

“…To tackle the problems above, a rigorous DWC model was developed in the general process modeling system (gPROMS) environment (Imperial College London, Process System Enterprise Ltd., London, UK, Version 4.0). gPROMS software is a flexible, open source and user-friendly platform, especially suitable for modeling unconventional or complex process systems, such as the catalyst activity reduction [14], the emulsion polymerization reaction [15] or the dynamics of the non-equilibrium, three-phase separation [16]. One of the key advantages of the gPROMS platform is To tackle the problems above, a rigorous DWC model was developed in the general process modeling system (gPROMS) environment (Imperial College London, Process System Enterprise Ltd., London, UK, Version 4.0).…”

Section: Introductionmentioning

confidence: 99%

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Modeling/Simulation of the Dividing Wall Column by Using the Rigorous Model

et al. 2019

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Dividing wall column (DWC) is an atypical distillation column with an internal, vertical WE partition wall that effectively accommodates two conventional distillation columns into one to improve the thermodynamic efficiency. In previous studies, different equivalent models by combining conventional columns are adopted to approximate the DWC modeling, which may not well describe the integration of the DWC; moreover, the computational cost increases when multiple columns are implemented to represent one DWC. In this paper, a rigorous mathematical model is proposed based on the mass balance, the energy and phase equilibrium of the DWC, where decision variables and state variables are equally treated. The model was developed in the general process modeling system (gPROMS). Based on the rigorous model, the influences of liquid split ratio and vapor split ratio are discussed, and it is shown that the heat duty is sensitive to changes on the liquid and vapor split ratio. Inappropriate liquid and vapor split ratio will increase the mixing effects at both ends of the dividing wall, and adversely affect the thermodynamic efficiency. Hence, the degree of mixing is defined to characterize the column efficiency. Furthermore, the middle component split ratio at the top of the pre-fractionator has an optimal point for better energy saving with certain liquid and vapor split ratios, and can be used as an indicator for the energy performance. Finally, the model was tested and validated against literature data by using the ternary benzene–toluene–xylene mixture system as a case study.

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A strategy to extend reactive distillation column performance under catalyst deactivation

Filipe

Matos

Novais

2011

Computer Aided Chemical Engineering

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This work addresses the effects of catalyst deactivation and investigates methods to reduce their impact on the reactive distillation columns performance. The use of variable feed quality and reboil ratio are investigated using a rigorous dynamic model developed in gPROMS and applied to an illustrative example, i.e., the olefin metathesis system, wherein 2-pentene reacts to form 2-butene and 3-hexene. Three designs and different strategies on column energy supply to tackle catalyst deactivation are investigated and the results compared.

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Catalyst Deactivation in Reactive Distillation

Cited by 3 publications

References 9 publications

Reviu Model Distilasi Reaktif Dalam Produksi Etil Asetat

Reviu Model Distilasi Reaktif Dalam Produksi Etil Asetat

Modeling/Simulation of the Dividing Wall Column by Using the Rigorous Model

A strategy to extend reactive distillation column performance under catalyst deactivation

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