Decreasing the hydrogen-rich gas circulation ratio and service life extension of the C9–C14 alkanes dehydrogenation catalyst

Mathematical modelling of catalytic cracking riser reactor

“…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.…”

Development of the Mathematical Model of Diesel Fuel Catalytic Dewaxing Process Taking into Account Factors of Nonstationarity

“…The method of mathematical modelling is widely used to study, improve, optimize and forecast the processes of petroleum refining industry [4][5][6][7][8][9][10][11][12][13][14].…”

Optimization of Higher Alkanes Dehydrogenation Process under Conditions of Decreased Hydrogen Containing Gas Flow with Using Mathematical Modeling

“…The task of controlling the activity of the catalyst of higher n-alkanes dehydrogenation process, with the purpose of increasing target product yield at the hydrogen/feedstock molar ratio of 6/1 and increasing the catalyst service life was solved in the following way: using the developed mathematical model of dehydrogenation process [26], considering coke generating from aromatic and diene hydrocarbons, and oxidizing of coke compounds by water vapour, the rate of coke generating on the catalyst coating is found:…”

“…Taking into account the specific character of the dehydrogenation reaction, the process is better to be kept at lower pressure, which is formed exactly by ratio hydrogen/feedstock. After decreasing molar ratio, the increase in the target product -alkenes -is observed; however, along with that, the decreasing rate of hydrogenation by-products by hydrogen and, as a result, the increasing rate of catalyst dehydrogenation by coke is observed [21][22][23][24][25][26].…”