ТЕХНІКО-ЕКОНОМІЧНИЙ АНАЛІЗ ВИРОБНИЦТВА СИНТЕТИЧНОГО ВІДНОВЛЮВАНОГО МЕТАНУ

• Дата: 2023
• Автори: Klimenko, V.M., Suprun, T.T.
• Формат: Стаття
• Мова: Ukrainian
• Опубліковано: Institute of Engineering Thermophysics of NAS of Ukraine 2023
• Онлайн доступ: https://ihe.nas.gov.ua/index.php/journal/article/view/526
• Назва журналу: Thermophysics and Thermal Power Engineering

The high instability and intermittent nature of the generation of electrical energy from solar and wind power plants led to the creation and improvement of PtG technologies as the main means of coordinating the operating modes of such power plants with electric networks. The PtG concept involves the production of synthetic renewable methane (SRM) using surplus energy from renewable energy sources with the use or storage of it through gas networks. To date, the world already knows a large number of projects that implement the specified PtG energy chain from obtaining renewable electricity, using it to generate hydrogen in certain electrolyzers, and to obtaining synthetic renewable methane by catalytic or biological methanation, i.e., combining hydrogen with carbon dioxide. Techno-economic analysis of a number of implemented projects made it possible to assess the influence of certain factors on the efficiency of the energy conversion process and thus determine ways to improve technologies. The levelized cost of synthetic renewable methane or also known as break-even price of the production of SRM was selected as a criterion for evaluating the efficiency of a particular technology. To date, unfortunately, there is not a single implemented technology that would allow SRM to be obtained at a price lower than the price of natural gas. The main directions for the development of PtG technologies and reduction of the levelized cost of synthetic renewable methane are: - increasing the energy efficiency of electrolysis and methanation processes, i.e. increasing the output of the product (hydrogen or methane) while reducing energy costs; due to the improvement of technologies; the use of internal energy resources (heat of methanation, oxygen from electrolysis, etc.); application of more efficient processes for obtaining hydrogen, methane, carbon dioxide; - reduction of capital investments due to the use of productive equipment and simpler technologies. A separate task of this study was to determine the prospects for the development of PtG, the most attractive for the conditions of Ukraine. Such a perspective, in our opinion, can be the bioenergy direction of the development of renewable energy, which can be organically combined with the concept of SRM production in the PtG process. In this direction, we can expect to reach a profitable level of SRM production by 2030.