| ArticleName |
Briquetting of the fine-grained energy-source products |
| Abstract |
The activities of the coal industry lead to the inevitable accumulation of waste. During extraction and dressing of coal, its in-mine transportation and storage, a large number of fine-grained and pulverized coal products are formed. Man-made fills of coal waste occupy large areas of land and have a negative impact on the environment habitat. On the other hand, this waste contains large energy-source reserves. The use of such fine and pulverized coal is difficult. At the same time, such characteristics of coal waste as: ash and sulfur contents, heat of combustion, volatile matter allow us to establish their prospects for the use as a full-fledged household fuel. There are many other kinds of combustible waste. These are solid agricultural residues (straw from grain crops, sunflower stems and husks, corn cobs, etc.), wood processing wastes (sawdust, pruning from the processing of primary wood, parquet dust, etc.). It is possible to obtain a product with wanted properties from lowgrade but energy-potential raw materials using briquetting technology. The results of research into technological development of briquetting fine-grained energy-source materials of different physical nature, structure, composition and properties are summarized. The outcomes of the technical analysis and comparative burning of fuel briquettes are given. In terms of quality, the fuel briquettes obtained meet the regulatory and consumer requirements. The involvement of fine-grained and pulverized coal waste and wood-plant products in the fuel balance will enable production of additional fuel, utilization of unclaimed carbon-containing waste, increase of combustion efficiency of such waste and reduction in the environmental pollution.
The study was supported by the Southern Federation University, Ministry of Science and Higher Education of the Russian Federation, Project VnGr-07/2020-04-IM in 2020. |
| References |
1. Gerasimov A. M., Dmitriev S. V. A combined technology of dry beneficiation of coal. Obogashchenie Rud. 2016. No. 6 . pp. 9–13. DOI: 10.17580/or.2016.06.02
2. Zhongjie Shen, Xin Hua, Qinfeng Liang, JianLiang Xu, Dong Han, Haifeng Liu. Reaction, crystallization and element migration in coal slag melt during isothermal molten process. Fuel. 2017. Vol. 191. pp. 221–229.
3. Pashkevich M. A., Sverchkov I. P., Chukaeva M. A. Study of process properties of coal-water slurries produced from co al-preparation waste slurry. Obogashchenie Rud. 2017. No. 6. pp. 54–57. DOI: 10.17580/or.2017.06.10
4. Li Minghui, Li Zhiyong, Xu Sheng, Yao Kaixuan. Development Trend of China’s Coal Preparation Industry in Critical Process and Equipment. Proceedings of the XVIII International Coal Preparation Congress. Cham : Springer International Publishing, 2016. Vol. 1. pp. 175–180.
5. Subhajit Aich, Nandi B. K., Bhattacharya S. Effect of weathering on physico-chemical properties and combustion behavior of an Indian thermal coal. International Journal of Coal Science & Technology. 2019. Vol. 6, Iss. 1. pp. 51–62.
6. Dushin A. V., Ignatуeva M. N., Yurak V. V., Ivanov A. N. Economic evaluation of environmental impact of mining: ecosystem approach. Eurasian Mining. 2020. No. 1. pp. 30–36. DOI: 10.17580/em.2020.01.06
7. Krapchin I. P., Mitrofanov V. O. Economic efficiency of utilization of gas and solid waste of coal production. Ugol. 2001. No. 7. pp. 19–22.
8. Energy Strategy of Russia up to 2035 : Approved under the Russian Federation Government Decree No. 1523-r dated 09.06.2020. Available at: https://minenergo.gov.ru/node/1026 (accessed: 15.09.2020).
9. Taulbee D. N. Method for producing fuel briquettes from high moisture fine coal or blends of high moisture fine coal and biomass. Patent US, No. US 2012/0317878 A1. Applied: 28.08.2012. Published: 20.12.2012.
10. Howell P. S. Fuel briquette. Patent US, No. US D600,636 S. Applied: 11.04.2007. Published: 22.09.2009.
11. Liaksa A. V., Azarov V. H., Matvienko V. H. Composition for the preparation of fuel briquettes. Patent UA, No. UA24075U. Applied: 30.05.2005. Published: 25.06.2007.
12. Masafumi Matsuo, Chuichi Muzoguchi. Biomass dry distillation product-mixed coal briquette fuel. Patent JP, No. JP2004331928A. Applied: 01.05.2003. Published: 25.11.2004.
13. Guangtal M. A. Environment-protecting high-heat value briquette. Patent CN, No. CN1403546A. Applied: 29.08.2001. Published: 19.03.2003.
14. Ščerbina A., Ožigovs V. The moisture-resistent fuel briquette, process for producing thereof and an ap paratus for imple mentation of them. Patent LV, No. LV12635B. Applied: 13.10.2000. Published: 20.07.2001.
15. Tayts E. M., Andreeva I. A. Coal test and analysis methods. Moscow : Nedra, 1983. 301 p.
16. Elishevich A. T. Briquetting of valuable minerals : Teaching aid. Odessa : Lidyb, 1990. 294 p.
17. Buravchuk N. I., Guryanova O. V. Briquetting of coal products with a binding agent. Solid Fuel Chemistry. 2016. Vol. 50, No. 6. pp. 352–356.
18. Buravchuk N. I., Guryanova O. V. Method of producing fuel briquette (versions). Patent RF, No. 2396306. Applied: 23.04.2009. Published: 10.08.2010. Bulletin No. 22.
19. Rebinder P. A. Surface phenomena in dispersion systems. Physical and chemical mechanics : selected works. Moscow : Nauka, 1979. 381 p.
20. Surinova S. I., Polushkin A. N. Role of coal wettability in production of carbon sorbents. Solid Fuel Chemistry. 1987. No. 4. pp. 123–127.
21. Vorobev V. N., Leshchenko P. S., Klimova L. K., Ossovskaya N. S. Ecologically clean binders for production of domestic fuel from fine size coal. Solid Fuel Chemistry. 1997. No. 2. pp. 81–85.
22. Petrova G. I., Moskalenko T. V., Leonov A. M., Bychev M. I. Coal polarity as function of coal rank. GIAB. 2010. No. 7. pp. 366–370.
23. Makarov A. S., Yanko S. V., Degtyarenko T. D. et al. Role of adsorption in production of coal–water slurry fuel from Donbass coal. Solid Fuel Chemistry. 1993. No. 3. pp. 41–46.
24. Parfitt G. D., Rochester C. H. Adsorption from solution at the solid/liquid interface. London : Academic Press, 1983. 416 p. |
