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LIGHT METALS AND CARBON MATERIALS
ArticleName Experimental research of soot and carbon combustion efficiency in turbulent flow
DOI 10.17580/tsm.2020.04.05
ArticleAuthor Shahrai S. G., Skuratov A. P., Belousova N. V., Magerramov R. B.
ArticleAuthorData

Siberian Federal University, Krasnoyarsk, Russia:

S. G. Shahrai, Professor of the Department of Technosphere Safity of Mining and Metallurgical production, Doctor of Technical Sciences, Associate professor
A. P. Skuratov, Professor of the Department of Thermal Engineering and Hydro-Gas Dinamics, Doctor of Technical Sciences, Professor, e-mail: a.skuratov@mail.ru
N. V. Belousova, Head of Department of Nonferrous Metal, Doctor of Chemical Sciences, Professor, e-mail: netmamba@mail.ru
R. B. Magerramov, Graduate Student of the Department of Nonferrous Metal, e-mail: rusmahar9313@gmail.com

Abstract

In the burner of aluminum electrolyzer along with combusting anode gases enters 1.9 kg/hour of dust, which contains about 45% (more than 0.8 kg) of carbon and soot which are produced within anode oxidation and combustion of hydrocarbons, which are emitted during its carbonization. No more than 50% of carbon and soot are incinerated in the burners of aluminum electrolyzer, while the rest goes to gas treatment units (GTU) along with anode gases, which are delivered to the electrolyzers with fluorinated alumina. Thus there is a growth of carbon content, electrical resistance and temperature in the electrolyte, the frequency of depressurization for coal foam removing, the losses of fluoride salts, because of its evaporation out of opened melt surface, transport, technological and ecological costs related to coal foam flotation and the need for flotation tails storage.The increase in efficiency of carbon and soot combustion in the burners of aluminum electrolyzers is the relevant objective, which is able to raise economical and ecological indicators of aluminum production. The paper presents the experimental results aimed at the growth of efficiency of soot and carbon combustion in the burners of aluminum electrolysis pot. The expected models of soot formation in aluminum electrolyzers are analyzed. The experiment methodology at carbon and soot combustion intensification in turbulent flow is reviewed. The short-term increase of the excessive air feed in the combustion zone with α = 8.0…10.0 leads to the decrease of carbon and soot content more than in 3 times in solid combustion products.

keywords Aluminum electrolyzer, anode gases, combustion, soot, carbon, afterburning, turbulent flow
References

1. Grotgeym K., Welch J. Electrolytic aluminum production technology, theo retical and applied approach. Norway. 1980. 326 p.
2. Kulikov B. P., Istomin S. P. Aluminum Smelting Waste Management. 2nd Ed. Krasnoyarsk : LLC “Klassik Centr”, 2004. 480 p.
3. Burkat V. S., Drukarev V. A. Reduction of aluminum production discharges. Saint Petersburg : LLC “Lyubavich”, 2005. 275 p.
4. Skuratov A. P., Shahrai S. G., Fomichev I. V., Belyanin A. V. Increasing of energetic and ecological efficiency of aluminum production : monograph. Krasnoyarsk: SFU, 2018. 180 p.
5. Shahrai S. G. Increasing of ventilation efficiency of aluminum production potrooms developing gas suction system: abstract of thesis. Irkutsk: Irkutsk State Technical University, 2008. 20 p.
6. Bakirov F. G., Zaharov V. M., Poleshchuk I. Z., Shaykhutdinov Z. G. Soot generation and burnout at hydrocarbon fuel combustion. Moscow : Mashinostroyenie, 1989. 128 p.
7. Hamisu Adamu Dandajeh, Nicos Ladommatos, Paul Hellier, Aaron Eveleigh. Influence of carbon number of C1–C7 hydrocarbons on PAH formation. Fuel. 2018. Vol. 228. pp. 140–151.
8. Skuratov A. P., Shahrai S. G., Fomichev I. V., Belyanin A. V. Increasing of energetic and ecological efficiency of aluminum production: monograph. Krasnoyarsk: SFU, 2018. 180 p.
9. Korolchenko A. Y. Combustion and explosion processes. Moscow: Pozhnauka, 2007. 266 p.
10. Krasinsky D. V. Numerical simulation of hydrocarbon fuel combustion processes in a burner with axial injection of steam jet. Thermophysics IOP Conf. Series: Journal of Physics: Conf. Series 1105. 2018. pp. 1–6.
11. Alekseenko S. V., Anufriev I. S., Bobrova L. N., Dulin V. M. et al. Experimental and Numerical Study of Steam-Enhanced Regime of Liquid Hydrocarbon Fuel Combustion in a Pilot Burner. Proceedings of the European Combustion Meeting – 2013. June 25–28. 2013. Lund, Sweden. Paper P3–72. 6 p.
12. Palazzo N., Kögl M., Bauer Ph., Mannazhi M. N. et al. Investigation of Soot Formation in a Novel Diesel Fuel Burner. Energies. 2019. No. 12. pp. 1993–2010.
13. Bond T. C., Doherty S. J., Fahey D., Forster P. et al. Bounding the role of black carbon in the climate system: A scientific assessment. J. Geophys. Res. Atmos. 2013. No. 118. pp. 5380–5552.
14. Shahrai S. G., Korostovenko V. V., Rebrik I. I. Improvement of bell gas suction system of powerful Soderberg electrolyzers: monograph. Krasnoyarsk : IPK SFU, 2010. 146 p.
15. Shahrai S. G., Korostovenko V. V., Puzin A. V., Mann V. H. Treatment approach for burner and gus duct of aluminum electrolyzer. Patent RF 24437966. Published : 27.12.2011. Bulletin No. 36.
16. Vilenskiy T. V., Hemalyan D. M. Combustion dynamics of pulverized fuel. Moscow : Energiya, 1978. 246 p.
17. Golovina E.S. High temperature combustion and carbon gasification. Moscow: Energoatomizdat, 1983. 176 p.
18. Kantorovich B. V. Basics of theory of solid fuel combustion and gasification. Moscow: AN SSSR, 1958. 601 p.
20. Ovchinnikov A. A., Nikolaev A. N. Basics of hydromechanics of biphasic medium. Kazan: Kazan State Technological University, 1998. 112 p.
21. Protodyakonov I. O., Lyublyanskaya I. E., Ryzhkov A. E. Hydrodynamics and mass transfer in dispersed systems liquid – solid. Leningrad: Khimiya. Leningradskoye otdeleniye, 1987. 336 p.
22. Gilisnkiy M. M., Stasenko A. L. Supersonic gas-dispersed jets. Moscow: Mashinostroyeniye, 1990. 176 p.
23. Straus V. Industrial gas treatment. Moscow: Khimiya, 1981. 616 p.

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