Mathematical modeling of light naphtha (C5, C6) isomerization process

Chekantsev, Nikita Vitalievich; Gyngazova, Maria S.; Иванчина, Э. Д.

doi:10.1016/j.cej.2013.08.088

Cited by 63 publications

(32 citation statements)

References 22 publications

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“…The zeolite catalyst requires a higher reaction temperature to get a higher turnover rate of n ‐alkane, while the higher reaction temperature leads to a low equilibrium conversion of n ‐alkane and a low selectivity to the corresponding isomerate (see Figure ). As a slightly exothermic reaction, the isomerization of n ‐alkanes is favored by low reaction temperature in thermodynamics …”

Section: Why Sulfated Zirconia?mentioning

confidence: 99%

Alkane isomerization over sulfated zirconia solid acid system

et al. 2020

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Summary Sulfated zirconia (SZ) and its modified versions attract great interest in recent years, because of their promising potential in n‐alkane isomerization. The oxidative and protonation routes are active and interactional in n‐alkane activation over SZ catalysts. The bimolecular reaction becomes dominant with increasing the density of active sites on SZ surface and decreasing the carbon chain of feed. Pentane and hexane are mainly isomerized by protonated cyclopropane mechanism, while which is thermodynamically unflavored for n‐butane isomerization. The deactivation of SZ catalysts is primarily caused by the loss of superacidity and oxidizing ability, resulted from the structure changes of sulfate species. Several strategies for improving the activity of SZ are reviewed. The intrinsic structure‐reactivity relationship of SZ catalysts in alkane isomerization is updated to illuminate the prerequisite for the highly active catalysts and the mechanism of active sites formation. The applications of Pt/SZ in fixed‐bed and unmodified SZ in circulating fluidizing bed in light alkanes isomerization are compared with the conventional technologies based on the chlorinated alumina catalysts. Finally, the future study of SZ catalysts is outlooked from the academic investigations to the industrial applications.

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Section: Why Sulfated Zirconia?mentioning

confidence: 99%

Alkane isomerization over sulfated zirconia solid acid system

et al. 2020

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“…Mathematical model for calculation and optimization of catalytic cracking is based on the multistage and hierarchical approach to the mathematical models construction [34][35][36][37]. The essence of the hierarchical approach of the mathematical description synthesis means that the mathematical description of each subsequent structural level should be included as a main part in the mathematical description of the last level ( Fig.…”

Section: The Mathematical Modelmentioning

confidence: 99%

Mathematical modelling of catalytic cracking riser reactor

Иванчина

Ivashkina

Nazarova

2017

Chemical Engineering Journal

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“…Precise analysis of intermolecular interactions makes it possible to consider the change of content of involved feedstock, technological parameters and specific features of production units [14][15][16][17] . Values of Bi coefficients considering the non-additivity of octane numbers for certain substances are given in Table. 1.…”

Section: Complex System For Gasoline Blending Maintenancementioning

confidence: 99%

Complex System for Gasoline Blending Maintenance

et al. 2014

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The main aim of the study is to increase the efficiency of gasoline blending process using developed complex modeling system, it provides counting feedstock changes in the refinery, influencing detonation characteristics of trade gasoline. Final products of modeling system are precise and gasoline blending recipes are economically optimal. The relevance of the study is caused by the need to increase production volumes of trade gasoline in refineries that meet gasoline quality standards. Mathematical modeling and application of automatic computer systems are most relevant solutions for optimization of technologically difficult stages of oil production. The study considers the modeling approach to the blending process from the position of non-additivity of gasoline octane numbers. Practical results: The module of gasoline detonation characteristics developed in Borland "Delphi 7" workspace in conjunction with the module of chromatographic data analysis "Unichrom" and optimal recipes development module are combined in the universal complex system for gasoline blending process maintenance. The system allows taking into account feedstock composition changes on purpose to vary the recipes of trade gasoline blending. The developed complex system analyzes refinery conditions and recommends the feedstock supply in the process and allows getting essential economic benefit for the refineries by reducing the quality reserve of trade products

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Mathematical modeling of light naphtha (C5, C6) isomerization process

Cited by 63 publications

References 22 publications

Alkane isomerization over sulfated zirconia solid acid system

Alkane isomerization over sulfated zirconia solid acid system

Mathematical modelling of catalytic cracking riser reactor

Complex System for Gasoline Blending Maintenance

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