Analysis of Optimal Process Flow Diagrams of Light Naphtha Isomerization Process by Mathematic Modelling Method

Chuzlov, V.A.; Molotov, Konstantin V.

doi:10.1051/matecconf/20168501036

Cited by 3 publications

(3 citation statements)

References 11 publications

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“…The process presented in this research work is an isomerization unit of an Egyptian plant located in Alexandria, in which the octane number is upgraded from 66 to 82 in a penex process using a chlorinated alumina-based catalyst. In that process, low-octane components such as n-hexane and methyl pentane are recycled to the reactor, as shown in Figure 1, to increase octane number (isomerization with de-hexanizer) [18]. Naphtha feed comes from an atmospheric distillation unit, and from cracking units as hydrocracker and coker units.…”

Section: Base Casementioning

confidence: 99%

Optimum Design of Naphtha Recycle Isomerization Unit with Modification by Adding De-Isopentanizer

Osman,

Fadel,

Salem

et al. 2023

Processes

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Environmental standards have recently imposed very rigorous limitations on the amounts of benzene, aromatics, and olefins, which can be found in finished gasoline. Reduction of these components could negatively affect the octane number of gasoline, so the isomerization process is gaining importance in the present refining context as an excellent safe alternative to increase the octane number of gasoline. The main aim of the naphtha isomerization unit is to modify the molecular structure of light naphtha to transform it into a more valuable gasoline blend stock, and simultaneously the benzene content is reduced by saturation of the benzene fraction. In this work, Aspen HYSYS version 12.1 is used to simulate the hydrogen once-through isomerization unit of an Egyptian refinery plant, located in Alexandria, in order to determine the properties, composition, and octane number of the isomerate product. Many potential changes are investigated in order to find the best design that efficiently raises octane number with the least amount of expense. Firstly, the plant is modified by adding one fractionator either before or after the reactor, then by adding two fractionators before and after the reactor; then the configuration which gives the highest product octane number with the highest Return on Investment (ROI) is chosen as the recommended optimum configuration. The results show that using two fractionators before and after the reactor is the best configuration. Optimization of this best configuration resulted in an increase in octane number by 7% and a decrease in the total cost by 13%.

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Section: Base Casementioning

confidence: 99%

Optimum Design of Naphtha Recycle Isomerization Unit with Modification by Adding De-Isopentanizer

Osman,

Fadel,

Salem

et al. 2023

Processes

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“…Chuzlov and colleagues − have developed a rigorous mathematical basis for both extracting kinetic information from experiments and also using kinetics information in the simulation of isomerization processes. Chuzlov et al summarized the catalytic reaction mechanism, the associated active centers, and the derived molecular transformations of the isomerization reactions over a Pt over sulfated zirconia catalyst in the context of a full set of material and energy balance equations.…”

Section: Isomerization Of C5–c6 Alkanesmentioning

confidence: 99%

“…The dependence of the produced RON and yield upon the inlet temperature was provided. Chuzlov and Molotov elaborated on the development and use of an isomerization model in a process context. This group also published further details on the mechanism and model…”

Section: Isomerization Of C5–c6 Alkanesmentioning

confidence: 99%

Catalytic Upgrading of Light Naphtha to Gasoline Blending Components: A Mini Review

et al. 2019

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The upgrading of light naphtha (C5–C6 stream) to gasoline blending components has been the subject of intensive research at both academic and industrial laboratories. The combination of high volatility and low-octane number has made this stream surplus at many refineries worldwide. This review presents the latest developments in selected catalytic upgrading processes and a brief discussion on the reaction mechanism and reactor models. A majority of the review falls within the development of catalysts for n-hexane isomerization to hydrocarbon isomers with a high octane number. There are three types of isomerization catalysts that include Pt/Al2O3–Cl, Pt/SO4–ZrO2, and Pt/zeolite. Efforts are ongoing to improve the catalyst performance for higher selectivity and catalyst lifetime. Very little work has been published on the conversion of n-pentane mainly as a result of its low activity and the limited options available for its transformation to gasoline blending components. Other approaches discussed in the review include dimerization and oligomerization of C5–C6 alkenes and methylative homologation. The review covers literature published during the period of 2000–2018.

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Forecasting the zeolite-containing catalyst activity in catalytic cracking technology taking into account the feedstock composition

Ivashkina¹,

Nazarova²,

Shafran³

et al. 2017

AIP Conference Proceedings

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Analysis of Optimal Process Flow Diagrams of Light Naphtha Isomerization Process by Mathematic Modelling Method

Cited by 3 publications

References 11 publications

Optimum Design of Naphtha Recycle Isomerization Unit with Modification by Adding De-Isopentanizer

Optimum Design of Naphtha Recycle Isomerization Unit with Modification by Adding De-Isopentanizer

Catalytic Upgrading of Light Naphtha to Gasoline Blending Components: A Mini Review

Forecasting the zeolite-containing catalyst activity in catalytic cracking technology taking into account the feedstock composition

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