Experimental study of the influence of crossing the disjunctive geological fault on thermal regime of underground gasifier
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- Category: Mining
- Last Updated on 28 November 2016
- Published on 17 November 2016
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Authors:
V.G.Lozynskyi, Cand. Sc. (Tech.), State Higher Educational Institution „National Mining University“, Dnipro, Ukrainе, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
R.O.Dychkovskyi, Dr. Sc. (Tech.), Prof., State Higher Educational Institution „National Mining University“, Dnipro, Ukrainе, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
V.S.Falshtynskyi, Cand. Sc. (Tech.), Assoc. Prof., State Higher Educational Institution „National Mining University“, Dnipro, Ukrainе, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
P.B.Saik, Cand. Sc. (Tech.), State Higher Educational Institution „National Mining University“, Dnipro, Ukrainе, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Ye.Z.Malanchuk, Dr. Sc. (Tech.), Assoc. Prof., National University of Water Management and Nature Resources Use, Rivne, Ukraine, e-mail: malanchykEZ@ mail.ru
Abstract:
Purpose. Determining the impact of changes of the geological faults amplitude without breaking the continuity of coal seams and the temperature conditions of underground gasifier based on the experimental data during underground coal gasification.
Methodology. Methods of comparative analysis and mathematical modeling, experimental bench testing were used.
Findings. The scheme of determining the time of crossing geological fault according to thermocouples was developed. Based on this scheme the analysis of changes of the temperature during displacement amplitude of geological fault variation up to 0.9 of coal seam thickness was conducted. Average time deviation of crossing the fault plane of disjunctive geological fault with underground gasifier was received. Established values make it possible to determine the output of underground gasifier on stable operation regime by a temperature factor. Based on the experimental data it was defined that with increase in the amplitude of geological fault by more than 0.75 of coal seam thickness the process of underground coal gasification turns into the process of underground coal combustion. The results of the research will allow making adjustments to the calculation of heat balance of the gasification process.
Originality. It was found that with increase in the amplitude of disjunctive geological faults there appears additional loss of heat resulting from convection heat transfer in the place of coal seam fracturing and reducing of its emission due to changes in the combustion face of underground gasifier.
Practical value. Obtained results of bench experimental studies with sufficient precision for practical application can be used to determine the parameters of thermal balance and thermal regime of underground gasifier and provide an opportunity to expand the field of application of an underground coal gasification technology near geological faulting zones and potentially involve substandard deposits of hard coal for underground coal gasification. It will give an opportunity to receive generator gas, chemical products and power energy.
References/Список літератури
1. Lozynskyi, V. H., Dychkovskyi, R. O., Falshtynskyi, V. S. and Saik, P. B., 2015. Revisiting possibility to cross disjunctive geological faults by underground gasifier. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, No. 4, pp. 22–28.
2. Bondarenko, V., Sai, K. and Anikushyna, K., 2015. An overview and prospectives of practical application of the biomass gasification technology in Ukraine. New developments in mining engineering 2015: Theoretical and practical solutions of mineral resources mining, CRC Press/Balkema, The Netherlands, pp. 27–32.
3. Bondarenko, V., Tabachenko, M. and Wachowicz, J., 2010. Possibility of production complex of sufficient gasses in Ukraine. New Techniques and Technologies in Mining. CRC Press/Balkema, The Netherlands, pp. 113–119.
4. Ovchynnikov, M., Ganushevych, K. and Sai, K., 2013. Methodology of gas hydrates formation from gaseous mixtures of various compositions. Annual Scientific-Technical Colletion – Mining of Mineral Deposits 2013. CRC Press/Balkema/The Netherlands, pp. 203–205.
5. Falshtynskyi, V., Dychkovskyi, V. Lozynskyi, V. and Saik, P., 2012. New method for justification of the technological parameters of coal gasification in the test setting. Geomechanical Processes During Underground Mining – Proceedings of the School of Underground Mining. CRC Press/Balkema, The Netherlands, рр. 201–208.
6. Kuzmenko, O., Petliovanyi, M. and Stupnik, M., 2013. The influence of fine particles of binding materials on the strength properties of hardening backfill. Annual Scientific-Technical Collection - Mining of Mineral Deposits 2013, CRC Press/Balkema, The Netherlands, pp. 45–48.
7. Khomenko, O., Kononenko, M., and Netecha, M., 2016. Industrial research into massif zonal fragmentation around mine workings. Mining of Mineral Deposits, Nо. 10(1), pp. 50–56.
8. Falshtynskyi, V., 2013. Justification of the gasification channel length in underground gas generator. Annual Scientific-Technical Collection - Mining of Mineral Deposits 2013, CRC Press/Balkema, The Netherlands, pp. 125–132.
9. Stańczyk, K., Howaniec, N. and Smoliński, A., 2011. Gasification of lignite and hard coal with air and oxygen enriched air in a pilot scale ex situ reactor for underground gasification. Fuel, Nо. 90(5), рр. 1953–1962.
10. Krause, E., Krzemień, A., and Smoliński, A., 2015. Analysis and assessment of a critical event during an underground coal gasification experiment. Journal of Loss Prevention in the Process Industries, Nо. 33, рр. 173–182.
11. Stanczyk, K., Kapusta, K., Wiatowski, M., Swiadrowski, J., Smolinski, A. and Rogut, J., 2012. Experimental simulation of hard coal underground gasification for hydrogen production. Fuel, Nо. 91, рр. 40–50.
12. Wachowicz, J., Łączny, J. M. and Iwaszenko, S., 2015. Modelling of Underground Coal Gasification Process Using CFD Methods. Archives of Mining Sciences, Nо. 60(3), рр. 663–676.
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