Increasing the economic efficiency of gasoline production: Reducing the quality giveaway and simulation of catalytic cracking and compounding

Chuzlov, V.A.; Nazarova, Galina; Иванчина, Э. Д.; Ivashkina, Elena; Dolganova, Irena; Solopova, Anastasia

doi:10.1016/j.fuproc.2019.106139

Cited by 14 publications

(6 citation statements)

References 49 publications

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“…Previous comprehensive experimental studies allow us to form a reaction network of catalytic cracking [29][30][31]. The formalized mechanism of cracking reactions simplifies the mathematical description of such complicated multicomponent processes and considers SAR composition and reactions resulting in coke formation from these hydrocarbons.…”

Section: The Modelmentioning

confidence: 99%

A Model of Catalytic Cracking: Catalyst Deactivation Induced by Feedstock and Process Variables

et al. 2022

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Changes in the quality of the feedstocks generated by involving various petroleum fractions in catalytic cracking significantly affect catalyst deactivation, which stems from coke formed on the catalyst surface. By conducting experimental studies on feedstocks and catalysts, as well as using industrial data, we studied how the content of saturates, aromatics and resins (SAR) in feedstock and the main process variables, including temperature, consumptions of the feedstock, catalyst and slops, influence the formation of catalytic coke. We also determined catalyst deactivation patterns using TG-DTA, N2 adsorption and TPD, which were further used as a basis for a kinetic model of catalytic cracking. This model helps predict the changes in reactions rates caused by coke formation and, also, evaluates quantitatively how group characteristics of the feedstock, the catalyst-to-oil ratio and slop flow influence the coke content on the catalyst and the degree of catalyst deactivation. We defined that a total loss of acidity changes from 8.6 to 30.4 wt% for spent catalysts, and this depends on SAR content in feedstock and process variables. The results show that despite enriching the feedstock by saturates, the highest coke yields (4.6–5.2 wt%) may be produced due to the high content of resins (2.1–3.5 wt%).

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Section: The Modelmentioning

confidence: 99%

A Model of Catalytic Cracking: Catalyst Deactivation Induced by Feedstock and Process Variables

et al. 2022

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“…Given that the catalytic cracking gasoline is a part of the commercial petrol, the optimization of mixed feedstocks to increase the yield and RON of gasoline should correspond to the consumptions and properties of the other flows (riformates, isomerizates, etc.) [39].…”

Section: Model Applicationmentioning

confidence: 99%

A Model of Catalytic Cracking: Product Distribution and Catalyst Deactivation Depending on Saturates, Aromatics and Resins Content in Feed

et al. 2021

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The problems of catalyst deactivation and optimization of the mixed feedstock become more relevant when the residues are involved as a catalytic cracking feedstock. Through numerical and experimental studies of catalytic cracking, we optimized the composition of the mixed feedstock in order to minimize the catalyst deactivation by coke. A pure vacuum gasoil increases the yields of the wet gas and the gasoline (56.1 and 24.9 wt%). An increase in the ratio of residues up to 50% reduces the gasoline yield due to the catalyst deactivation by 19.9%. However, this provides a rise in the RON of gasoline and the light gasoil yield by 1.9 units and 1.7 wt% Moreover, the ratio of residue may be less than 50%, since the conversion is limited by the regenerator coke burning ability.

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“…Рассчитанные оценки температур потоков ВЦО1 с 5-ой на 1-ую тарелки составляют 159 и 99 ℃ соответственно, то есть обеспечивалось охлаждение потока примерно на 60 ℃. Для сравнения достигаемых показателей процесса по исследуемым вариантам далее сопоставляли соответствующие полученные расчетные значения [11][12][13][14][15][16][17][18][19][20]. На рисунке 6 показан характерный для обоих вариантов температурный профиль по высоте колонны.…”

Section: методыunclassified

Increasing the efficiency of the partial oil removal column

Зотов

Попов

Хабибрахманова

2021

Vestn. Voronež. gos. univ. inž. tehnol.

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The operation of the primary oil refining unit is considered. An analysis of the operation of the operating column K-1 showed that there are noticeable fluctuations in the operating mode of the apparatus in the summer and cold season, as a result, a change in the temperature of the column top and a deterioration in the clarity of fraction rectification were observed. To study the methods of adjusting the parameters of the K-1 topping column, a computational experiment was carried out using the UniSim Design modeling system, in which the models of the apparatus and the installation model as a whole were formed. The Peng-Robinson method was used as a mathematical package for calculating the thermodynamic properties of the mixture components. Comparison of the calculated performance of the two options for the equipment of the column K-1. According to the first version, the operation of the K-1 column was simulated, in which the raw material enters the 19 tray, the hot stream is fed to the bottom of the column to the 24 tray, oil reflux to the 5 tray, acute irrigation and a partial condenser are used. Unstable technological regimes of the column top were observed in this variant in industrial conditions. To assess the fundamental possibility of changing the hardware design of the K-1 column, another option was chosen, in which there is no acute irrigation and oil irrigation, at the same time, upper circulating irrigation was introduced from the 5th to the 1st tray with cooling the flow and the technological scheme of forming and feeding the hot jet was preserved. Comparison of the fractional compositions of the topped oil showed that for the considered options, there are practically similar calculated estimates, while the use of upper circulating irrigation allows not only to unload the upper part of the distillation column from the heat load, but also to use a significant heat flow of the cooler of the upper circulating irrigation for preheating oil , which will also reduce the consumption of liquid fuel for furnaces.

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Increasing the economic efficiency of gasoline production: Reducing the quality giveaway and simulation of catalytic cracking and compounding

Cited by 14 publications

References 49 publications

A Model of Catalytic Cracking: Catalyst Deactivation Induced by Feedstock and Process Variables

A Model of Catalytic Cracking: Catalyst Deactivation Induced by Feedstock and Process Variables

A Model of Catalytic Cracking: Product Distribution and Catalyst Deactivation Depending on Saturates, Aromatics and Resins Content in Feed

Increasing the efficiency of the partial oil removal column

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