Change of coal’s gas content during transportation to the temporary storage
DOI:
https://doi.org/10.33408/2519-237X.2024.8-2.188Keywords:
bituminous coal, bituminous coal transportation, coal’s seam gas content, residual gas content, methane, threshold limit concentration, coal storage, temporary coal storageAbstract
Purpose. Definition of correlation between residual gas content in coal stored in closed temporary storages and coal’s natural gas content, which depends on the weather, train’s transportation time and the amount of air ventilating closed storage needed to maintain methane concentration below threshold limit value.
Methods. Analysis of the transportation process from excavation site to the temporary storages, which takes into account transportation duration, carriages type and atmospheric temperature; experimental determination of effective diffusion coefficient for methane in coal fragments; theoretical research of thermal pattern dynamic for coal mass in train carriages; computational analysis of coal’s gas content dynamic during transportation and correlation between residual coal’s gas content and required airflow rate for temporary storage ventilation.
Findings. This paper represents the results of research of change of coal’s gas content during excavation, transportation to the surface and further transportation to temporary storages by train by evaluating influence of physical and chemical properties of coal, effective diffusion coefficient in particular, and mean atmospheric temperature. According to procured data, value of effective diffusion coefficient, which depends on coal transportation time and its mean particle diameter, increases with the rise of mean coal mass temperature. Calculation of mean coal mass temperature per unit of volume during transportation is based on approximate method of Bubnov – Galerkin. Residual coal’s gas content after transportation is calculated as difference between value of coal’s gas content after loading into carriages and coal’s gas content after delivery to temporary storages. Correlation between residual coal’s gas content and required airflow rate for temporary storage ventilation has been established.
Application field of research. The results of the study can be used to ensure methane safety during temporary storage of coal raw materials in closed warehouses.
References
Potekhina A.M., Potekhina A.M., Dekanova N.P. Perspective volumes of cargo transportation at the Eastern polygon up to 2030. Proc. of VII All-Russian scientific-practical conf. «Modern Russian science: current issues, achievements and innovations», Penza, March 15, 2024. Penza: Nauka I Prosveshchenie, 2024. Pp. 17–21. (rus). EDN: https://elibrary.ru/CAUCXR.
Krivopishina M.E. Rational equipment of the seaport terminal for export coal. Scientifically technical and economical cooperation in Asia-Pacific countries in the 21st century, 2021. Vol. 1. Pp. 86–90. (rus). EDN: https://elibrary.ru/GOGGJT.
Cherepanov R.Yu., Solov'ev A.S. Environmental safety at the coal terminal in the port of Vanino. Proc. of X All-Russian (with international participation) scientific-technical conf. of young researchers «Actual problems of construction, housing and communal services and technosphere safety», Volgograd, April 24–29, 2023. Volgograd State Technical University, 2023. Pp. 319–320. (rus). EDN: https://elibrary.ru/GNVHYJ.
Kostyunichev D.N., Otdelkin N.S. Assessment of the meshed screens operability to reduce dust emissions of bulk cargo from the ports open warehouses. Vestnik Gosudarstvennogo universiteta morskogo i rechnogo flota imeni admirala S.O. Makarova, 2024. Vol. 16, No. 1. Pp. 55–63. (rus). DOI: https://doi.org/10.21821/2309-5180-2024-16-1-55-63. EDN: https://elibrary.ru/KKAQND.
Rodionov V.A., Tursenev S.A., Skripnik I.L., Ksenofontov Y.G. Results of the study of kinetic parameters of spontaneous combustion of coal dust. Journal of Mining Institute, 2020. Vol. 246. Pp. 617–622. (rus). DOI: https://doi.org/10.31897/PMI.2020.6.3. EDN: https://elibrary.ru/AWHZJW.
Rush E.A., Vlasova N.V. Promising measures aimed at environmental protection when working with coal at the production sites of the terminal and storage complex. Modern Technologies. System analysis. Modeling, 2023. No. 2 (78). Pp. 20–32. (rus). EDN: https://elibrary.ru/EFGFKC.
Al'mukhametova S.G. Transition of open coal stockpiles to closed ones as a solution to the problem of dust emissions into the environment. Proc. of XIX Youth intern. scientific-practical conf. of students and young scientistsоn «Step into the future: theoretical and applied researches of modern science», St. Petersburg, May 19-20, 2020. Morrisville, NC, USA: Lulu Press, 2020. Pp. 25–28. (rus). EDN: https://elibrary.ru/MDUDDQ.
Tankov A.M., Salikhov V.A. Assessment of the impact on the environment of coal storage conditions in open and closed coal warehouses in Kuzbass [Electronic resource]. Proc. of XIX Intern. scientific-practical conf. «Natural and intellectual resources of Siberia. Sibresurs 2022», Kemerovo, November 23–24, 2022. Kemerovo: T.F. Gorbachev State Technical University, 2022. Article 116. 5 p. (rus). EDN: https://elibrary.ru/DZPLFS.
Gendler S.G., Vasilenko T.A., Stepantsova A.Yu. Investigation of mass transfer of hard coal during its transportation to the place of temporary storage. Mining information and analytical bulletin, 2023. No. 9-1. Pp. 135–148. (rus). DOI: https://doi.org/10.25018/0236_1493_2023_91_0_135. EDN: https://elibrary.ru/KLQAFM.
Guo J., Gao J., Yan K., Zhang B. Unintended mitigation benefits of China's coal de-capacity policies on methane emissions. Energy Policy, 2023. Vol. 181. Article 113718. DOI: https://doi.org/10.1016/j.enpol.2023.113718.
Vasilenko T.A., Islamov A.H., Kirillov A.K., Doroshkevich A.S. Investigation of the hierarchical structure of pores of fossil coals by non-destructive methods. Mining information and analytical bulletin, 2018. No. S49. Pp. 33–48. (rus) DOI: https://doi.org/10.25018/0236-1493-2018-11-49-33-48. EDN: https://elibrary.ru/YSTLRR.
Starikov G.P., Yurchenko V.M., Mel'nik T.N., Khudoley O.G., Kravchenko A.V. Activation of methane diffusion in coal under varied mechanical and thermodynamical parameters of a coal seam. Physics and High Pressure Technology, 2019. Vol. 29, No 3. Pp. 122–130. EDN: https://elibrary.ru/SZNRTE.
Churashev V.N. Prospects for transportation of coal of Siberian deposits. ECO, 2015. No. 5. Pp. 82–98. (rus). EDN: https://elibrary.ru/TRSNPR.
Astafurov N.A. Coal transportation in Russia. Scientific forum. Siberia, 2015. No 1. Pp. 84–85. (rus). EDN: https://elibrary.ru/VXEDML.
Vasilenko T.A., Kirillov A.K., Molchanov A.N., Pronskii E.A. An NMR study of the ratio between free and sorbed methane in the pores of fossil coals. Chemistry of Solid Fuel, 2018. Vol. 52, No. 6. Pp. 361–369. DOI: https://doi.org/10.3103/S0361521918050087. EDN: https://elibrary.ru/JPANAG.
Gaidarov B.A. Review of the key characteristics of experimental methods for coalbed methane diffusion coefficient measurment. Trudy Instituta geologii Dagestanskogo nauchnogo centra RAN, 2022. No. 4 (91). Pp. 24–31. (rus). DOI: https://doi.org/10.33580/2541-9684-2022-91-4-24-31. EDN: https://elibrary.ru/UOBFYT.
Fel'dman E.P., Vasilenko T.A., Kalugina N.A. Physical kinetics of coal-methane system: mass transfer, pre-outburst events. Journal of Mining Science, 2014. Vol. 50, No 3. Pp. 448–464. DOI: https://doi.org/10.1134/S1062739114030077. EDN: https://elibrary.ru/XNLHZZ.
Kudryakov O.V., Varavka V.N., Arefeva L.P. Engineering-physical method for determining the thermal conductivity of objects with micrometric thickness and a complex structure. Safety of Technogenic and Natural Systems, 2023. Vol. 7, No. 2. Pp. 80–89. (rus). DOI: https://doi.org/10.23947/2541-9129-2023-7-2-80-89. EDN: https://elibrary.ru/ETRLSY.
Gribovskiy G.V., Shuplyakov M.Yu. Review of methods for determination of heat exchange coefficient for different surfaces under MMG conditions. Proc. of Sixth conference of geocryologists of Russia «Monitoring in Cryolite Zone» with participation of Russian and foreign scientists, engineers and specialists. Lomonosov Moscow State University, June 14-17, 2022. Moscow: Dobrosvet, 2022. Pp. 595–599. (rus). EDN: https://elibrary.ru/FQSKIT.
Balalayev A.N., Mokshanov A.S., Parenyuk M.A. Thermal properties of carriages and containers made of extruded aluminum panels. Transport of the Russian Federation, 2014. No. 1 (50). Pp. 58–60. (rus). EDN: https://elibrary.ru/SCCIIV.
Sukhoterin M.V., Sosnovskaya A.A., Pizhurina N.F. Shear buckling of ship structures rectangular elements. Vestnik Gosudarstvennogo universiteta morskogo i rechnogo flota imeni admirala S.O. Makarova, 2023. Vol. 15, No. 6. Pp. 1054–1065. (rus). DOI: https://doi.org/10.21821/2309-5180-2023-15-6-1054-1065. EDN: https://elibrary.ru/UWSTSW.
Published
How to Cite
License
Copyright (c) 2024 Gendler Semyon Grigor'evich, Stepantsova Anastasiia Yur'evna, Mozzhanov Dmitriy Borisovich
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
