Managing the process of underground coal gasification
/ 0
- Details
- Category: Content №6 2023
- Last Updated on 23 December 2023
- Published on 30 November -0001
- Hits: 1954
Authors:
P.Saik*, orcid.org/0000-0001-7758-1083, Dnipro University of Technology, Dnipro, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
V.Lozynskyi, orcid.org/0000-0002-9657-0635, Dnipro University of Technology, Dnipro, Ukraine
O.Anisimov, orcid.org/0000-0001-8286-7625, Dnipro University of Technology, Dnipro, Ukraine
O.Akimov, orcid.org/0000-0002-9557-2276, Interregional Academy of Personnel Management, Kyiv, Ukraine
A.Kozhantov, orcid.org/0000-0002-3658-9940, Satbayev University, Almaty, the Republic of Kazakhstan
O.Mamaykin, orcid.org/0000-0002-2137-0516, Dnipro University of Technology, Dnipro, Ukraine
* Corresponding author e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu. 2023, (6): 025 - 030
https://doi.org/10.33271/nvngu/2023-6/025
Abstract:
Purpose. The research purpose is to determine the efficiency parameter of the coal gasification process based on the analysis of the composition of combustible gases (Н2, СН4, СО) and the producer gas calorific value, depending on the methods of supplying the blast mixtures to the gasifier oxidative zone.
Methodology. A laboratory setup is used to perform experimental research into underground coal seam gasification. Its constituent segments are a stand, branches for supplying blast and gas-outlet mixtures, as well as a flow control system. This setup makes it possible to model the coal seam occurrence according to the mining-geological conditions of its occurrence. When determining the gasification process efficiency, two methods of supplying the blast mixture are tested: through a blast injection well and combined method (blast injection well + controlled pipeline). The generated producer gas calorific value has been determined analytically according to the “additivity rule”, taking into account the concentration of each combustible gas and its calorific value.
Findings. The underground gasifier efficiency when changing the method of supplying the air mixture has been substantiated. Based on qualitative data on the concentration of combustible gasifier gases at the outlet of a modeled underground gasifier, conditions for increasing their concentration have been characterized and time intervals have been determined, through which their decrease occurs with increasing outgassed space.
Originality. It has been revealed that the use of combined blast method in an underground gasifier causes a double supply of oxidizing agent to the gasification zone. This intensifies the gasification process by expanding the gasification reaction zones both along the length of the gasification column and along the seam thickness. Also, the combined method of supplying the blast mixture is characterized by improved thermal stability and gas formation parameters.
Practical value. The research results make it possible to quickly make technological decisions for changing the operating modes of the underground gasifier, as well as determine the optimal method for supplying air mixtures, which improves the quality and calorific value of the producer gas. When changing the blast supply method to a combined method, the average concentration of Н2, СН4 and СО combustible gases increases by 3.85 %, and the calorific value increases by an average of 0.53 MJ/m3.
Keywords: underground gasification, coal seam, combustion face, experimental research, producer gas, controlled pipeline
References.
1. Markevych, K., Maistro, S., Koval, V., & Paliukh, V. (2022). Mining sustainability and circular economy in the context of economic security in Ukraine. Mining of Mineral Deposits, 16(1), 101-113. https://doi.org/10.33271/mining16.01.101.
2. Kirin, R., Yevstihnieiev, A., Vyprytskyi, A., & Sieriebriak, S. (2023). Legal aspects of mining in Ukraine: European integration vector. Mining of Mineral Deposits, 17(2), 44-52. https://doi.org/10.33271/mining17.02.044.
3. Khassenov, A.K. (2022). The prospect of converting Almaty power plants to natural gas. Engineering Journal of Satbayev University, 143(6), 107-122. https://doi.org/10.51301/vest.su.2021.i6.15.
4. Liu, J. B., Dai, H. Y., Wang, X., Shynar, A., & Madimarova, G. (2014). Three-Dimensional Geological Modeling of Mining Subsidence Prediction Based on the Blocks. Advanced Materials Research, (905), 697-701. https://doi.org/10.4028/www.scientific.net/AMR.905.697.
5. Pavlychenko, A., & Kovalenko, A. (2013). The investigation of rock dumps influence to the levels of heavy metals contamination of soil. Annual Scientific-Technical Collection – Mining of Mineral Deposits, 237-238. https://doi.org/10.1201/b16354-43.
6. Baibatsha, A., Dussembayeva, K., Bekbotayeva, A., & Abdullayeva, М. T. (2018). Tails of enrichment factories as the technogenic mineral resources. International Multidisciplinary Scientific GeoConference SGEM, 18(1), 519-526. https://doi.org/10.5593/sgem2018/1.1/s01.066.
7. Bi, S. L., Bauer, N., & Jewell, J. (2023). Coal-exit alliance must confront freeriding sectors to propel Paris-aligned momentum. Nature Climate Change, 13(2), 130-139. https://doi.org/10.1038/s41558-022-01570-8.
8. Beshta, O. S., Fedoreiko, V. S., Palchyk, A. O., & Burega, N. V. (2015). Autonomous power supply of the objects based on biosolid oxide fuel systems. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, (2), 67-73.
9. Pivnyak, G. G., & Beshta, O. O. (2020). A complex source of electrical energy for three-phase current based on a stand-alone voltage inverter. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, (1), 89-93. https://doi.org/10.33271/nvngu/2020-1/089.
10. Dyczko, A., Kamiński, P., Stecuła, K., Prostański, D., Kopacz, M., & Kowol, D. (2021). Thermal and mechanical energy storage as a chance for energy transformation in Poland. Polityka Energetyczna, 24(3), 43-60. https://doi.org/10.33223/epj/141867.
11. Kulikov, P., Aziukovskyi, O., Vahonova, O., Bondar, O., Akimova, L., & Akimov, O. (2022). Post-war Economy of Ukraine: Innovation and Investment Development Project. Economic Affairs (New Delhi), 67(5), 943-959. https://doi.org/10.46852/0424-2513.5.2022.30.
12. Bondarenko, V., Tabachenko, M., & Wachowicz, J. (2010). Possibility of production complex of sufficient gasses in Ukraine. New Techniques and Technologies in Mining, 113-119. https://doi.org/10.1201/b11329-19.
13. Saik, P., Petlovanyi, M., Lozynskyi, V., Sai, K., & Merzlikin, A. (2018). Innovative approach to the integrated use of energy resources of underground coal gasification. Solid State Phenomena, (277), 221-231. https://doi.org/10.4028/www.scientific.net/SSP.277.221.
14. Bondarenko, V., Salieiev, I., Kovalevska, I., Chervatiuk, V., Malashkevych, D., Shyshov, M., & Chernyak, V. (2023). A new concept for complex mining of mineral raw material resources from DTEK coal mines based on sustainable development and ESG strategy. Mining of Mineral Deposits, 17(1), 1-16. https://doi.org/10.33271/mining17.01.001.
15. Kačur, J., Laciak, M., Durdán, M., & Flegner, P. (2023). Investigation of Underground Coal Gasification in Laboratory Conditions: A Review of Recent Research. Energies, 16(17), 6250. https://doi.org/10.3390/en16176250.
16. Lozynskyi, V. (2023). Critical review of methods for intensifying the gas generation process in the reaction channel during underground coal gasification (UCG). Mining of Mineral Deposits, 17(3), 67-85. https://doi.org/10.33271/mining17.03.067.
17. Jiang, L., Xue, D., Wei, Z., Chen, Z., Mirzayev, M., Chen, Y., & Chen, S. (2022). Coal decarbonization: A state-of-the-art review of enhanced hydrogen production in underground coal gasification. Energy Reviews, 1(1), 100004.
18. Jiang, L., Chen, Z., Ali, S. F., Zhang, J., Chen, Y., & Chen, S. (2022). Storing carbon dioxide in deep unmineable coal seams for centuries following underground coal gasification. Journal of Cleaner Production, (378), 134565.
19. Sapegin, V. N., Zberovskiy, V. V., Arestov, V. V., & Angelovskiy, A. A. (2013). Calculation of filtration parameters of the gas-bearing coal rock massif. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, (3), 52-58.
20. Sofiiskyi, K., Zberovskyi, V., Yalanskyi, A., & Yalanskyi, O. (2019). Conceptual tendencies to analyze coal-gas system state under the hydroimpulsive effect. E3S Web of Conferences, (123), 01026. https://doi.org/10.1051/e3sconf/201912301026.
21. Agaiev, R., Vlasenko, V., & Kliuev, E. (2014). Methane receiving from coal and technogenic deposits. Progressive Technologies of Coal, Coalbed Mathane, and Ores Mining, 113-119. https://doi.org/10.1201/b17547-21.
22. Zou, C., Chen, Y., Kong, L., Sun, F., Chen, S., & Dong, Z. (2019). Underground coal gasification and its strategic significance to the development of natural gas industry in China. Petroleum Exploration and Development, 46(2), 205-215. https://doi.org/10.1016/s1876-3804(19)60002-9.
23. Saik, P. B. (2014). On the issue of simultaneous gasification of contiguous low-coal seams. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, (6), 33-37. https://doi.org/10.33271/nvngu/2020-4/039.
24. Buktukov, N. S., Gumennikov, E. S., & Mashataeva, G. A. (2019). In-situ gasification of steeply dipping coal beds with production hole making by supersonic hydraulic jets. Analytical Bulletin, (9), 30-40. https://doi.org/10.25018/0236-1493-2019-09-0-30-40.
25. Yelubay, M., Massakbayeva, S., Aitkaliyeva, G., & Radelyuk, I. (2021). Processing of ash and slag waste. Engineering Journal of Satbayev University, 143(6), 79-84. https://doi.org/10.51301/vest.su.2021.i6.11.
26. Abuova, R. Zh., Ten, E. B., & Burshukova, G. A. (2021). Study of vibration properties of ceramic-metal nanostructural tin-cu coatings with different copper content 7 and 14 at.% on chromium-nickel-vanadium steels. News of the National Academy of Sciences of the Republic of Kazakhstan, 5(449), 6-13. https://doi.org/10.32014/2021.2518-170X.92.
27. Lozynskyi, V. G., Dychkovskyi, R. O., Falshtynskyi, V. S., Saik, P. B., & Malanchuk, Ye. Z. (2016). Experimental study of the influence of crossing the disjunctive geological faults on thermal regime of underground gasifier. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, (5), 21-29.
28. Sudakov, A., Chudyk, I., Sudakova, D., & Dziubyk, L. (2019). Innovative isolation technology for swallowing zones by thermoplastic materials. E3S Web of Conferences, (123), 1-10. https://doi.org/10.1051/e3sconf/201912301033.
29. Bondarenko, V. I., Falshtynskiy, V. S., & Dychkovskiy, R. O. (2009). Synthetic stowing of rockmass at borehole underground coal gasification (BUCG). Deep Mining Challenges: International Mining Forum, 169-177. https://doi.org/10.1201/noe0415804288.ch18.
30. Dychkovskyi, R., Shavarskyi, J., Cabana, E. C., & Smoliński, A. (2019). Characteristic of possible obtained products during the well underground coal gasification. Solid State Phenomena, (291), 52-62. https://doi.org/10.4028/www.scientific.net/ssp.291.52.
31. Hwang, S. C., Kim, S. K., Park, J. Y., Lee, D. K., Lee, S. H., & Rhee, Y. W. (2014). Kinetic study on Low-rank Coal Including K2CO3, Na2CO3, CaCO3 and Dolomite Gasification under CO2 Atmosphere. Clean Technology, 20(1), 64-71. https://doi.org/10.7464/ksct.2014.20.1.064.
32. Bazaluk, O., Lozynskyi, V., Falshtynskyi, V., Saik, P., Dychkovskyi, R., & Cabana, E. (2021). Experimental Studies of the Effect of Design and Technological Solutions on the Intensification of an Underground Coal Gasification Process. Energies, 14(14), 4369. https://doi.org/10.3390/en14144369.
33. Berdnyk, M. (2022). Mathematical model and methods for solving heat-transfer problem during underground coal gasification. Mining of Mineral Deposits, 16(2), 87-94. https://doi.org/10.33271/mining16.02.088.
34. Proto, A. R., Longo, L., Gambella, F., Zimbalatti, G., Macrì, G., Gallucci, F., Caruso, L., Salerno, M., & Colantoni, A. (2016). Energetic Characteristics of Syngas Obtained from Gasification of Hazelnut Prunings. Procedia – Social and Behavioral Sciences, (223), 835-840. https://doi.org/10.1016/j.sbspro.2016.05.288.
Newer news items:
- Accounting for a positive, negative and zero sequences power in a three-phase unbalanced electrical system - 23/12/2023 01:29
- Study of leakage current in underground mine power network: a case study in mining in Vietnam - 23/12/2023 01:29
- A methodological approach to assessing the durability of welded structures of screens using SolidWorks Simulation software - 23/12/2023 01:29
- Mathematical models for determining and analyzing thermal regimes in mining industry mechanism structures - 23/12/2023 01:29
- Efficiency and seismic safety of constructing underground structures in complex rock masses - 23/12/2023 01:29
- Analysis and prediction of surface settlements during the digging of underground mining works (Algeria) - 23/12/2023 01:29
- Problems of operating heating boilers of increased environmental efficiency - 23/12/2023 01:29
- Recycling of barite ore tailings into porcelain: microstructure and dielectric properties - 23/12/2023 01:29
- Data analysis solutions to improve blasting efficiency in mining - 23/12/2023 01:29
- Mathematical substantiation and creation of information tools for optimal control of drilling and blasting in open-pit mine - 23/12/2023 01:29
Older news items:
- Use of backscattering ultrasound parameters for iron ore varieties recognition - 23/12/2023 01:29
- Theoretical model of random freight flow distribution in the conveyor transport line of the coal mine - 23/12/2023 01:29
- Substantiation of the technological parameters of bucket-wheel excavator forward trench when mining titanium deposits - 23/12/2023 01:29
Archive