Application of gas hydrate technologies for coal mine methane transportation

• Дата: 2020
• Автор: Sai, K.S.
• Формат: Стаття
• Мова: English
• Опубліковано: Інститут фізики гірничих процесів НАН України 2020
• Назва видання: Физико-технические проблемы горного производства
• Теми: Технико-экономические проблемы горного производства
• Онлайн доступ: http://dspace.nbuv.gov.ua/handle/123456789/166525
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Application of gas hydrate technologies for coal mine methane transportation / K.S. Sai // Физико-технические проблемы горного производства: Сб. научн. тр. — 2020. — Вип. 22. — С. 170-184. — Бібліогр.: 25 назв. — англ.

Purpose. Improving the efficiency of application of gas hydrate technologies for converting coal mine methane into a solid crystalline state with its subsequent transportation to consumers by intensifying the hydrate formation process. Methods. Experimental studies were carried out in the laboratory of innovative technologies of the Dnipro University of Technology (Dnipro, Ukraine). The thermobaric parameters of the hydrate formation process varied to produce of gas hydrate samples from mine methane by artificial means. Physical modeling and field experiments were carried out in an ILKA KTK-3000 climate chamber, as well as on an NPO-5 unit, which made it possible to simulate specified thermobaric parameters (temperature, pressure). The least squares method was used to determine the linear regression parameters. Findings. Gas hydrates and their thermobaric conditions were experimentally obtained under three variants: free mixing of gas and water in a reactor, forced mixing of a water-gas mixture and mixing of a water-gas mixture in a magnetic field. The functional relationship between the initial parameters of the hydrate formation process is determined for the three variants considered. The adequacy of the constructed models was verified by calculating the determination coefficient for each model using the square of the linear correlation coefficient. It is reasonable to transportation of gas in a solid gas hydrate state due to the effect of self-preservation, which is safer and economically feasible. Originality. By mathematical modeling found that the determination indices for all the considered variants of the hydrate formation process are larger than the determination coefficients, which confirms the fact that the parabolic model is more adequate. Practical implications. The optimal method for intensification of the hydrate formation process for substantiating artificially created gas hydrates from coal mine methane as an alternative energy source is justified.