Mathematical model of obtaining a hydrocarbon fuel based on the fischertropsch pathway in a stationary layer of the cobaltbased catalyst
Journal Title: Восточно-Европейский журнал передовых технологий - Year 2018, Vol 3, Issue 6
Abstract
<p>Studying the kinetics of the Fischer-Tropsch process is a rather important task, since this process is very sensitive to the temperature mode, as well as to the characteristics of the catalyst. In addition, a given process is accompanied by many side reactions that negatively affect the rate and selectivity of the reaction. The Fischer-Tropsch synthesis is an alternative source for obtaining high-quality fuel from coal or biomass rather than petroleum. Therefore, investigating the kinetics of the Fischer-Tropsch reaction, in order to improve the selectivity and activity of catalysts, and to determine the rate constants of chemical reactions, is a relevant problem.</p><p>The choice of the catalyst is one of the main factors affecting the quality and product yield for the Fischer-Tropsch synthesis. We fabricated two samples of cobalt catalysts for conducting the experiments. The first sample of the catalyst Со/γ-Al<sub>2</sub>O<sub>3</sub> contains cobalt nanoparticles of the same size. The second sample of the catalyst (Со)/γ-Al<sub>2</sub>O<sub>3</sub> was obtained by the method of impregnating the carrier with a solution of cobalt nitrate. The catalyst, obtained through the method of impregnation of (Со)/γ-Al<sub>2</sub>O<sub>3</sub>, demonstrated a higher activity, larger by an order of magnitude than the monodispersed catalysts. However, the monodispersed catalyst showed high selectivity for the lower hydrocarbons.</p><p>In order to calculate the kinetics of the Fischer-Tropsch process and to find the reaction rate constants, we developed a software module in the programming environment MS Visual Studio 2017 in the programming language C# using the .NET Framework v4.6 technologies.</p><p>By using the developed program module, we calculated reaction rate constants of the Fischer-Tropsch process. After analyzing the data obtained, one can see that the relative error is within 2…3 %, demonstrating the adequacy of the proposed model to solve the inverse problem of chemical kinetics. Therefore, we can state that a given model for the calculation of rate constants could be applied to study the Fischer-Tropsch process.</p>
Authors and Affiliations
Yurii Zakharchuk, Liudmyla Bugaieva
Keywords
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- EP ID EP527999
- DOI 10.15587/1729-4061.2018.134165
- Views 32
- Downloads 0
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