Thermodynamic Analysis of Benzene Alkylation with Ethylene

Khlebnikova, Elena; Bekker, Alexander; Ivashkina, Elena; Dolganova, Irena; Yurev, Egor

doi:10.1016/j.proche.2015.10.007

Cited by 13 publications

(3 citation statements)

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“…In this section, we employ the proposed distributed estimation and control approach to address the output feedback regulation problem for an integrated process of benzene alkylation with ethylene to produce ethylbenzene. This is a widely used process in the petrochemical industry where its main product (ethylbenzene) is utilized as an intermediate to produce styrene (by dehydrating ethylbenzene), the precursor component for important polymers and copolymers. , Ethylbenzene is also used as a solvent in many industrial applications …”

Section: An Integrated Process Case Study: Benzene Alkylation With Et...mentioning

confidence: 99%

“…This is a widely used process in the petrochemical industry where its main product (ethylbenzene) is utilized as an intermediate to produce styrene (by dehydrating ethylbenzene), the precursor component for important polymers and copolymers. 9,33 Ethylbenzene is also used as a solvent in many industrial applications. 34…”

Section: ■ An Integrated Process Case Study: Benzene Alkylation With ...mentioning

confidence: 99%

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Distributed Estimation and Nonlinear Model Predictive Control Using Community Detection

Pourkargar

Moharir

Almansoori

et al. 2019

Ind. Eng. Chem. Res.

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A combined distributed moving horizon estimation and distributed model predictive control architecture is proposed to address the distributed output−feedback control problem for nonlinear process systems. Community detection based on modularity maximization is used to generate separate optimal decompositions for the estimation and control problems on the basis of suitable graphs. The process of benzene alkylation with ethylene is used as a case study to illustrate the application and computational advantages of the proposed control strategy.

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Section: An Integrated Process Case Study: Benzene Alkylation With Et...mentioning

confidence: 99%

Section: ■ An Integrated Process Case Study: Benzene Alkylation With ...mentioning

confidence: 99%

Distributed Estimation and Nonlinear Model Predictive Control Using Community Detection

Pourkargar

Moharir

Almansoori

et al. 2019

Ind. Eng. Chem. Res.

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show abstract

“…Previously, we studied the feasibility of reconstruction of mixing devices with the aim to intensify the mixing of reactants during the AlCl 3 alkylation, without modeling of the actual alkylation process. Now we focus on improving the performance of the alkylation reactor developing a model that takes into account the catalyst deactivation, as discussed in refs − .…”

Section: Introductionmentioning

confidence: 99%

Mathematical Modeling of Liquid-Phase Alkylation of Benzene with Ethylene Considering the Process Unsteadiness

Ivashkina

Khlebnikova

Dolganova

et al. 2020

Ind. Eng. Chem. Res.

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Ethylbenzene is a key intermediate in the manufacture of styrene that is an important industrial monomer. Ethylbenzene is produced by benzene alkylation using either gas-phase or liquid-phase methods. The liquid-phase alkylation that uses liquid acidic catalysts needs to be improved. We develop a mathematical model for the liquid-phase benzene alkylation. The reaction scheme, designed with a due analysis of desired and side reactions, and with the analysis of the formation of deactivating agents, reflects, in particular, the influence of the concentration of heavy hydrocarbons on the catalyst activity. The account of the catalyst deactivation by heavy alkylaromatics allows predictions of the temporal changes in the outputs of the alkylation process. In particular, the decrease of the ethylbenzene concentration by 2−3 wt % and increase of the polyalkylate outlet concentration by 1.5−2 wt % are the results of the catalyst deactivation. These effects, however, can be compensated by 1.3-time increase of polyalkylate supply and by the temperature increase up to 398 K. The calculations also show that it is possible to decrease the supply of fresh catalyst from 0.498 to 0.472 t/hour without loss in the yield of ethylbenzene.

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Aromatic Substitution

Crampton¹

2020

Organic Reaction Mechanisms · 2016

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Thermodynamic Analysis of Benzene Alkylation with Ethylene

Cited by 13 publications

References 10 publications

Distributed Estimation and Nonlinear Model Predictive Control Using Community Detection

Distributed Estimation and Nonlinear Model Predictive Control Using Community Detection

Mathematical Modeling of Liquid-Phase Alkylation of Benzene with Ethylene Considering the Process Unsteadiness

Aromatic Substitution

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