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Numerical Study of Furnace Processes during Combustion of Off-Design Coals in a 220 t/h Boiler

  • STEAM BOILERS, POWER PLANT FUELS, BURNERS, AND BOILER AUXILIARY EQUIPMENT
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Abstract

In Russia, boiler units at many coal-fired thermal power plants (TPPs) are being converted to operation on off-design fuel due to the introduction of more and more strict environmental regulations, changes in the economic situation, and also due to a decrease in design coal reserves. During the service life of the Artemovsk combined heat and power plant (TETs), the design coal deposit was exhausted. Therefore, a replacement solid fuel for BKZ-220-100F boiler units had to be found. Since conversion to off-design coals may induce negative factors, such as a decrease in the reliability of the heating surfaces and maintenance of the required superheated steam conditions, a variant analysis, including that on the basis of numerical simulation, of the processes occurring during coal burning in a combustion chamber (furnace) enjoys current interests. The objective of this study is to analyze the effect of furnace processes on operating reliability, efficiency, and environmental safety of a boiler unit when burning off-design coals. Numerical analysis was carried out using the ANSYS Fluent software package, and mathematical modeling of furnace processes was based on the Euler-Lagrange approach. The results of simulation are compared with check and zone-by-zone calculations of the furnace chamber. In the horizontal section, at the level of the burners, high-temperature zones are singled out in the near-wall region at the corners of the furnace chamber, which are formed by the waterwalls on the left side and front walls as well as the waterwalls on the right side and rear walls.1 The numerical simulation has revealed that the tangential arrangement of the burners induces a vertical vortex in the furnace chamber; however, the direction angles of the burner jets should be corrected. Combustion of El’ginsk coal considerably changes the furnace temperature conditions, thereby increasing the risk of heating surfaces slagging.

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REFERENCES

  1. Forecast and Development of Energy in the World and Russia 2019, Ed. by A. A. Makarov, T. A. Mitrovaya, and V. A. Kulagin (Inst. Energ. Issled. Ross. Akad. Nauk / Tsentr Energ. Mosk. Shkoly Upr. “Skolkovo”, Moscow, 2019) [in Russian].

  2. A. G. Tumanovskii, “Prospects for the development of coal-steam plants in Russia,” Therm. Eng. 63, 399–407 (2016). https://doi.org/10.1134/S0040601517060088

    Article  Google Scholar 

  3. Prospects of the Global Coal Market: Energy Bulletin (Anal. Tsentr pri Pravitel’stve RF, Moscow, 2021) [in Russian].

  4. Program of Development of Russia’s Coal Industry for the Period until 2035, Approved by RF Government Resolution No. 1582-r of June 13, 2020.

  5. General Layout of Electric Power Facilities, Approved by RF Government Resolution No. 1209-r of June 9, 2017.

  6. Fuel Combustion at Large Plants for Energy Production: Handbook (Byuro NDT, Moscow, 2017) [in Russian].

  7. Energy Strategy of the Russian Federation for the Period until 2035, Approved by RF Government Resolution No. 1523-r of June 9, 2020.

  8. V. V. Bogomolov, N. V. Artem’ev, A. N. Alekhnovich, and N. V. Novitskii, Power-Generating Coals of the Eastern Part of Russia and Kazakhstan: Handbook (UralVTI, Chelyabinsk, 2004) [in Russian].

  9. Thermal Calculation of Boiler Units (Standard Method), 3rd ed., (Tsentr. Kotlo-Turbinnyi Inst., St. Petersburg, 1998) [in Russian].

  10. A. N. Alekhnovich, Characteristics and Properties of Power-Generating Coals (Tsitsero, Chelyabinsk, 2012) [in Russian].

    Google Scholar 

  11. A. V. Gil’, A. S. Zavorin, O. M. Koksharev, and E. S. Vorontsova, “Numerical study of effect of primary air excess on combustion in a furnace chamber of a utility boiler with multi-channel swirl burners,” Izv. Tomsk. Politekh. Univ. 331 (9), 18–27 (2020).

    Google Scholar 

  12. P. Madejki, “Numerical study of a large-scale pulverized coal-fired boiler operation using CFD modelling based on the probability density function method,” Appl-. Therm. Eng. 145, 352–363 (2018). https://doi.org/10.1016/j.applthermaleng.2018.09.004

    Article  Google Scholar 

  13. A. V. Gil, A. S. Zavorin, and A. V. Starchenko, “Numerical investigation of the combustion process for design and non-design coal in T-shaped boilers with swirl burners,” Energy 186, 115844 (2019). https://doi.org/10.1016/j.energy.2019.07.174

    Article  Google Scholar 

  14. X. Yang, D. Ingham, L. Ma, H. Zhou, and M. Pourkashanian, “Understanding the ash deposition formation in Zhundong lignite combustion through dynamic CFD modelling analysis,” Fuel 194, 533–543 (2017). https://doi.org/10.1016/j.fuel.2017.01.026

    Article  Google Scholar 

  15. A. Dugum and K. Hanjalic, “Numerical simulation of coal-air mixture flow in a real double-swirl burner and implications on combustion anomalies in a utility boiler,” Energy 170, 942–953 (2019). https://doi.org/10.1016/j.energy.2018.12.121

    Article  Google Scholar 

  16. X. Wen, A. Shamooni, O. T. Stein, L. Cai, A. Kronenburg, H. Pitsch, A. M. Kempf, and C. Hasse, “Detailed analysis of early-stage NOx formation in turbulent pulverized coal combustion with fuel-bound nitrogen,” Proc. Combust. Inst. 38, 4111–4119 (2021). https://doi.org/10.1016/j.proci.2020.06.317

    Article  Google Scholar 

  17. A. V. Gil’ and A. V. Starchenko, “Mathematical modeling of physicochemical processes of coal combustion in chamber furnaces of boiler units based on the FIRE 3D applied software package,” Teplofiz. Aeromekh. 19, 655–671 (2012).

    Google Scholar 

  18. N. A. Zroichikov and A. A. Kaverin, “Numerical study of bituminous coal combustion in a boiler furnace with bottom blowing,” Therm. Eng. 63, 802–812 (2016). https://doi.org/10.1134/S0040601516110124

    Article  Google Scholar 

  19. E. P. Volkov, V. B. Prokhorov, S. L. Chernov, V. S. Kirichkov, and A. A. Kaverin, “Investigation of the combustion process of solid fuel in furnaces with direct-flow burners,” Therm. Eng. 67, 365–373 (2020). https://doi.org/10.1134/S0040601520060117

    Article  Google Scholar 

  20. P. V. Roslyakov, I. V. Khudyakov, D. A. Khokhlov, and M. N. Zaichenko, “Experience gained with CFD-modeling of liquid and gaseous fuel combustion processes in power installations (review),” Therm. Eng. 66, 599–618 (2019). https://doi.org/10.1134/S0040601519090039

    Article  Google Scholar 

  21. J. Chiang, Z. Zhou, X. Ma, and J. Liu, “Computation investigation of hydrodynamics, coal combustion and NOx emissions in a tangentially fired pulverized coal boiler at various loads,” Particuology 65, 105–116 (2022). https://doi.org/10.1016/j.partic.2021.06.012

    Article  Google Scholar 

  22. Y. Jiang, B.-H. Lee, D.-H. Oh, and C.-H. Jeon, “Optimization of operating conditions to achieve combustion stability and reduce NOx emission at half-load for a 550-MW tangentially fired pulverized coal boiler,” Fuel 306, 121727 (2021). https://doi.org/10.1016/j.fuel.2021.121727

    Article  Google Scholar 

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ACKNOWLEDGMENTS

The study was supported by the program for development of the Tomsk Polytechnic University.

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Authors and Affiliations

  1. National Research Tomsk Polytechnic University, 634050, Tomsk, Russia

    K. I. Mal’tsev, A. V. Gil’ & A. S. Zavorin

  2. АО Khabarovsk Repair and Erection Company, 680033, Khabarovsk, Russia

    D. V. Lebed’

Authors
  1. K. I. Mal’tsev
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  2. A. V. Gil’
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  3. A. S. Zavorin
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  4. D. V. Lebed’
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Corresponding author

Correspondence to K. I. Mal’tsev.

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Translated by T. Krasnoshchekova

The steam boiler has three sections: longitudinal (along the front, showing the furnace depth), transverse (across the front, showing the furnace width), and horizontal (cross-section, top view).

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Mal’tsev, K.I., Gil’, A.V., Zavorin, A.S. et al. Numerical Study of Furnace Processes during Combustion of Off-Design Coals in a 220 t/h Boiler. Therm. Eng. 69, 971–980 (2022). https://doi.org/10.1134/S0040601522110040

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  • DOI: https://doi.org/10.1134/S0040601522110040

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