Technology of Ethanol Dehydrogenation
Students Name: Petruk Liudmyla Ivanivna
Qualification Level: magister
Speciality: Chemical Technologies of Organic Substances
Institute: Institute of Chemistry and Chemical Technologies
Mode of Study: full
Academic Year: 2023-2024 н.р.
Language of Defence: ukrainian
Abstract: Petruk L. I., Reutskyi V. V. (head). Technology of ethanol dehydrogenation. Master’s qualification work. - Lviv Polytechnic National University, Lviv, 2023. The master’s thesis is devoted to the research of the technology of catalytic dehydrogenation of ethanol, the purpose of which is to obtain ethyl acetate. The main technical and economic aspects of the ethanol dehydrogenation process are analyzed. Based on the scientific and theoretical foundations of the process and a thorough literature review, an effective catalyst was selected. During the analysis of the data obtained as a result of the experiments, the optimal conditions for the dehydrogenation process were established, with the help of which it is possible to achieve maximum conversion and selectivity for key products. Since this process is in equilibrium, it was necessary to take this into account and choose the conditions that provide the most favorable equilibrium position, which depends on thermodynamic factors. Since the dehydrogenation reaction is endothermic, such a reaction must be carried out at a relatively high temperature, for alcohols dehydrogenation is carried out at 200-400°C. The high temperature of dehydrogenation reactions determines the need to conduct them in the gas phase. During dehydrogenation, as a result of splitting off hydrogen, the volume increases, so the increase in the degree of conversion in these processes is facilitated by a decrease in pressure. Also, increasing the temperature, in turn, contributes to the formation of reaction products. Raw material: ethanol. Catalyst: NTK-4, operating conditions – temperature 200- 400 ?С, pressure up to 3.0 MPa; bulk density – 1.5±0.15 kg/dm3. The material balance of the process is calculated. The amount of necessary raw materials, auxiliary materials, intermediate and by-products has been established. The heat balance of the process was calculated. The necessary quantities and characteristics of coolants and refrigerants are determined. The principle technological scheme of the ethanol dehydrogenation process is proposed and described. Also, in the economic part, the calculation of the costs necessary for conducting experimental research was carried out. Key words: ethanol, dehydrogenation, ethyl acetate, catalyst, efficiency.