Influence of temperature conditions of hydrocleaning process on fuel oil quality

Hydrogenation processes of oil residue refining are widely studied by Russian and foreign scientific groups, but so far they have practically not been implemented at domestic refineries. Due to the increased requirements for the quality of petroleum products, including fuel oil, as well as an increase in the proportion of heavy fractions, there is an urgent issue of upgrading and increasing secondary processes for refining residual raw materials and increasing the proportion of light fractions. One of the relevant processes is the catalytic hydrotreating of fuel oil. There are many scientific approaches to studying the hydrotreating process, such as modification of catalysts, improvement of related process equipment and implementation schemes, optimization of operating parameters, as well as automation and environmental safety issues. Also, an equally important part of the research is the preservation of the commercial appearance of fuel oil after the hydrogenation process. The study of optimal modes of hydrogenation processes of residual raw materials is necessary for quality control of the products. Optimization of the process of hydrodesulfurization of fuel oil in the future should lead to the production of products with better characteristics, such as low pour point, lower viscosity and reduced coking capacity, which will make the fuel more suitable for use in various industries. The paper presents the results of tests of fuel oil for basic qualitative indicators, such as pour point, density, coking ability and kinematic viscosity after hydrotreating with varying process temperatures from 340-360 °C. The research was carried out on two catalysts TK-743 from Haldor Topsoe and HR-1246 Impulse, which are designed for hydrotreating residual fractions. Based on the results obtained, it can be seen that the temperatures used in the hydrotreating process not only do not worsen the fuel oil, but also have a positive effect on its quality.