

Technology of electric ignition of pulverized coal fuel and prospects of its use
https://doi.org/10.15518/isjaee.2024.01.208-213
Abstract
Coal-fired generation has long been and still is one of the leaders in global power generation. According to the International Energy Agency, the current share of coal-fired generation is about 39%. Despite the global trend of decarbonization, global coal-fired power generation is steadily growing. In 2019, the growth of coal-fired generation amounted to about 1,5 %. As of 2019, global proven coal reserves are concentrated in the United States (23 %), the Russian Federation (15 %), Australia (14 %) and China (13 %) and amount to about 1,070 billion tons. Consumption of high-sulfur viscous fuel oils as a stoking, reserve or main fuel leads to emissions of such harmful substances as benz(a) pyrene and vanadium pentaoxide in addition to toxic sulfur, nitrogen and carbon oxides. At formation of sulfur oxides the dew point temperature of flue gases increases, which leads to formation of sulfuric acid and, as a consequence, to frequent repairs of tail parts of boiler units due to their corrosion. The article presents a review of modern technologies of pulverized coal-fired boiler units ignition, and also presents the original technology of electric ignition and the experience of implementation at the operating energy enterprises.
Keywords
About the Author
D. S. SinelnikovRussian Federation
Denis S. Sinelnikov - Associate Professor «Thermal Power Plants»,
Novosibirsk
References
1. . The sharp rise of coal power is taking it to a new record in 2021, threatening “net zero” goals. https://www.iea.org/news/coal-power-s-sharp-rebound-is-taking-it-toa-new-record-in-2021-threatening-net-zero-goals.
2. . Statistical Review of World Energy 2021. 70th edition. BP p.l.c. 2021. 69 p.
3. . Yang Z., Guo F., Xia Y., Xing Y., Gui X. Improved floatability of low-rank coal through surface modification by hydrothermal pretreatment. J Clean Prod 2020;246:119025.
4. . Wang D., Xu M., He J, Wang L. Flotation of low rank coal using dodecane after pretreatment by dielectric barrier discharge (DBD) air plasma. Fuel 2019; 251:543–50.
5. . Yu X., Luo Z., Gan D. Desulfurization of high sulfur fine coal using a novel combined beneficiation process. Fuel 2019;254:115603. https://doi.org/10.1016/j.fuel.2019.06.011.
6. . Chaurasia R. C., Sahu D., Nikkam S. Cleaning of coal by multi-gravity separator. Trans Indian Inst Met 2018; 71(6):1487–95.
7. . V. A. Pinchuk, T. A. Sharabura, A. V. Kuzmin. The effect of water phase content incoal-water fuel on regularities of the fuel ignition and combustion, Fuel Process. Technol. 191 (2019) 129–137, https://doi.org/10.1016/j.fuproc.2019.04.011.
8. . D. T. Pio, L.A.C. Tarelho, T.F.V. Nunes, M. F. Baptista, M.A.A. Matos, Co-combustion of residual forest biomass and sludge in a pilot-scale bubbling fluidized bed, J. Clean. Prod. 249 (2020), https://doi.org/10.1016/j.jclepro.2019.119309. Article number 119309.
9. . D. T. Pio, L.A.C. Tarelho, T.F.V. Nunes, M. F. Baptista, M.A.A. Matos, Co-combustion of residual forest biomass and sludge in a pilot-scale bubbling fluidized bed, J. Clean. Prod.249 (2020), https://doi.org/10.1016/j.jclepro.2019.119309. Article number 119309.
10. . Kapdan I. K., Kargi F. Bio-hydrogen production from waste materials. Enzym Microb Technol 2006;38:569e82. https://doi.org/10.1016/J.ENZMICTEC.2005.09.015
11. . Tang C. L., Huang Z. H., Law C. K. Determination, correlation, and mechanistic interpretation of effects of hydrogen addition on laminar flame speeds of hydrocarbon-air mixtures. Proceedings of the Combustion Institute. 2011. Vol. 33.P. 921–928.
12. . Abdin Z., Zafaranloo A., Rafiee A., M´erida W, Lipinski´ W, Khalilpour KR. Hydrogen as an energy vector. Renew Sustain Energy Rev 2020; 120:109620.
13. . Messerle, V., A. Ustimenko, O. Lavrichshev.2021. Plasma-fuel systems for clean coal technologies, Proc. Inst. Civ. Eng 174:79–83. DOI: 10.1680/ jener.19.00053.
14. . Naumov Yu. I. Patent RU No. 2410603, C 1, MKI F23 Q 5/00, F23Q13/00, 2009.
15. . Desyatkov G. A., Musin N. U., Saichenko A. N., Engelsht V. S. Patent SU No. 1636647, A1, MKI F23Q 5/00, 1989.
16. . Zhukov M. F., Karpenko E. I., Peregudov V.S. et al. Plasma oil-free firing of boilers and stabilization of the combustion of a pulverized coal torch. Novosibirsk: Science. Siberian Publishing Company RAS, 1995. – 304 p. – Low temperature plasma. T.16.
17. . Kondratyev V.I., E.E. Nikitin. Kinetics and mechanism of gas-phase reactions. M.: Nauka, 1975.
18. . Yagodnikov D. A., Voronetsky A. V. The influence of an external electric field on the features of ignition and combustion processes. Physics of combustion and explosion. 1994, no. 3, p. 3-12.
19. . Sinelnikov, D. S., Shikhotinov A. V. 2022. Thermal Engineering 69:902–907. DOI: 10.1134/S0040601522100081
Review
For citations:
Sinelnikov D.S. Technology of electric ignition of pulverized coal fuel and prospects of its use. Alternative Energy and Ecology (ISJAEE). 2024;(1):208-213. (In Russ.) https://doi.org/10.15518/isjaee.2024.01.208-213