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Published in: Thermal Engineering 9/2023

01-09-2023 | STEAM BOILERS, POWER FUEL, BURNERS, AND BOILER ACCESSORIES

Investigation into the Influence of Temperature on the Formation of Nitrogen Oxides during the Staged Combustion of Low-Reactive Coal with the Use of Direct-Flow Burners

Authors: V. B. Prokhorov, S. L. Chernov, V. S. Kirichkov, V. D. Aparov

Published in: Thermal Engineering | Issue 9/2023

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Abstract

Coal remains one of the main types of mineral fuel in Russia, especially in the Siberian and Far Eastern federal districts. At the same time, the requirements for reducing emissions of harmful substances into the atmosphere, including nitrogen oxides NOx, are becoming tougher both in Russia and around the world. In this regard, it is promising to use the vortex method of coal combustion using slot burners and collective action nozzles with a stepped air supply for combustion. However, when burning low-reactivity coal, it becomes necessary to achieve high combustion efficiency, which can only be ensured with the correct organization of the furnace aerodynamics, including the location of burners and nozzles, as well as with the optimal distribution of the shares of primary, secondary, and tertiary air. Using the example of vortex combustion of lean Kuznetsk coal using direct-flow burners and nozzles, the possibility of reducing nitrogen oxide emissions during staged fuel combustion is considered. A boiler with a steam capacity of 500 t/h with solid ash removal was taken as an object of the study. Two schemes of coal combustion were chosen earlier with the help of numerical and physical modeling. According to the calculations, both schemes provide low heat losses with mechanical underburning, at the level of 0.7–1.9%. Numerical modeling of the vortex combustion process showed that high maximum temperatures in the fuel ignition zone at low air excesses do not contribute to the formation of nitrogen oxides, but, on the contrary, contribute to their suppression due to the increased concentration of pyrolysis products in the main combustion zone. The temperature at the initial stage of combustion should be approximately 2000 K, and this figure is more important than reducing the excess of primary air from 0.3 to less than 0.1.

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Literature
1.
go back to reference Informational and Technical Handbook on the Best Available Techniques ITS-38-2022. Fuel Combustion at Large Plants for the Purpose of Power Generation (Fed. Agentstvo po Tekh. Regul. i Metrol., Moscow, 2022) [in Russian]. Informational and Technical Handbook on the Best Available Techniques ITS-38-2022. Fuel Combustion at Large Plants for the Purpose of Power Generation (Fed. Agentstvo po Tekh. Regul. i Metrol., Moscow, 2022) [in Russian].
2.
go back to reference W. Fan, Y. Li, Z. Lin, and M. Zhang, “PDA research on a novel pulverized coal combustion technology for a large utility boiler,” Energy 35, 2141–2148 (2010).CrossRef W. Fan, Y. Li, Z. Lin, and M. Zhang, “PDA research on a novel pulverized coal combustion technology for a large utility boiler,” Energy 35, 2141–2148 (2010).CrossRef
3.
go back to reference L. B. Thoma, C. Francisco, P. Stanislas, C. Sebastien, B. Jacques, and B. Bernard, “Coal combustion modeling of large power plant NOx abatement,” Fuel 86, 2213−2220 (2007).CrossRef L. B. Thoma, C. Francisco, P. Stanislas, C. Sebastien, B. Jacques, and B. Bernard, “Coal combustion modeling of large power plant NOx abatement,” Fuel 86, 2213−2220 (2007).CrossRef
5.
go back to reference B. W. Asay, L. D. Lahjaily, and P. O. Hedman, “Effect of coal moisture on burnout and nitrogen oxide formation,” Combust. Sci. Technol. 35, 15–31 (1983).CrossRef B. W. Asay, L. D. Lahjaily, and P. O. Hedman, “Effect of coal moisture on burnout and nitrogen oxide formation,” Combust. Sci. Technol. 35, 15–31 (1983).CrossRef
6.
go back to reference L. Shi, Z. Fu, X. Duan, C. Cheng, Y. Shen, B. Liu, and R. Wang, “Influence of combustion system retrofit on NOx formation characteristics in 300 MWe tangentially fired furnace,” Appl. Therm. Eng. 98, 766−777 (2016).CrossRef L. Shi, Z. Fu, X. Duan, C. Cheng, Y. Shen, B. Liu, and R. Wang, “Influence of combustion system retrofit on NOx formation characteristics in 300 MWe tangentially fired furnace,” Appl. Therm. Eng. 98, 766−777 (2016).CrossRef
7.
go back to reference P. Chambrion, H. Orikasa, T. Suzuki, T. Kyotany, and A. Tomita, “Study of C–NOx reaction by using isotopically labeled C and NOx,” Fuel 76, 493−498 (1997).CrossRef P. Chambrion, H. Orikasa, T. Suzuki, T. Kyotany, and A. Tomita, “Study of C–NOx reaction by using isotopically labeled C and NOx,” Fuel 76, 493−498 (1997).CrossRef
8.
go back to reference J. He, W. Song, S. Gao, L. Dong, M. Barz, J. Li, and W. Lin, “Experimental study of the reduction mechanism of NO emission in decoupling combustion of coal,” Fuel Process. Technol. 87, 803−810 (2006).CrossRef J. He, W. Song, S. Gao, L. Dong, M. Barz, J. Li, and W. Lin, “Experimental study of the reduction mechanism of NO emission in decoupling combustion of coal,” Fuel Process. Technol. 87, 803−810 (2006).CrossRef
9.
go back to reference J. Li, G. Xu, M. Guo, J. Zhang, Y. Guo, and Z. Zhou, “No smoke burning coal method for control nitrogen oxide and stove and application,” CN, CN 1110776 A[P] (1995). J. Li, G. Xu, M. Guo, J. Zhang, Y. Guo, and Z. Zhou, “No smoke burning coal method for control nitrogen oxide and stove and application,” CN, CN 1110776 A[P] (1995).
10.
go back to reference Z. Li, L. Zeng, G. Zhao, J. Li, S. Chen, and F. Zhang, “Cold experimental investigations into gas/particle flow characteristics of a low-NOx axial swirl burner in a 600-MWe wall-fired pulverized-coal utility boiler,” Exp. Therm. Fluid Sci. 37, 104−112 (2012).CrossRef Z. Li, L. Zeng, G. Zhao, J. Li, S. Chen, and F. Zhang, “Cold experimental investigations into gas/particle flow characteristics of a low-NOx axial swirl burner in a 600-MWe wall-fired pulverized-coal utility boiler,” Exp. Therm. Fluid Sci. 37, 104−112 (2012).CrossRef
11.
go back to reference J. Wang, K. Zheng, R. Singh, H. Lou, J. Hao, B. Wang, and F. Cheng, “Numerical simulation and cold experimental research of a low-NOx combustion technology for pulverized low-volatile coal,” Appl. Therm. Eng. 114, 498−510 (2017).CrossRef J. Wang, K. Zheng, R. Singh, H. Lou, J. Hao, B. Wang, and F. Cheng, “Numerical simulation and cold experimental research of a low-NOx combustion technology for pulverized low-volatile coal,” Appl. Therm. Eng. 114, 498−510 (2017).CrossRef
12.
go back to reference Z. Li, Z. Miao, Y. Zhou, S. Wen, and J. Li, “Influence of increased primary air ratio on boiler performance in a 660 MW brown coal boiler,” Energy 152, 804−817 (2018).CrossRef Z. Li, Z. Miao, Y. Zhou, S. Wen, and J. Li, “Influence of increased primary air ratio on boiler performance in a 660 MW brown coal boiler,” Energy 152, 804−817 (2018).CrossRef
13.
go back to reference M. Richardson, Y. Shimogori, and Y. Kidera, “Supercritical boiler technology matures” (2004). http:// www.hitachipowersystems.us/supportingdocs/forbus/ hpsa/technical_papers/CG2004.pdf. Accessed March 14, 2011. M. Richardson, Y. Shimogori, and Y. Kidera, “Supercritical boiler technology matures” (2004). http:// www.hitachipowersystems.us/supportingdocs/forbus/ hpsa/technical_papers/CG2004.pdf. Accessed March 14, 2011.
14.
go back to reference M. Taniguchi, Y. Kamikawa, T. Tatsumi, and K. Yamamoto, “Staged combustion properties for pulverized coals at high temperature,” Combust. Flame 158, 2261−2271 (2011).CrossRef M. Taniguchi, Y. Kamikawa, T. Tatsumi, and K. Yamamoto, “Staged combustion properties for pulverized coals at high temperature,” Combust. Flame 158, 2261−2271 (2011).CrossRef
15.
go back to reference J. Wang, W. Fan, Y. Li, M. Xiao, K. Wang, and P. Ren, “The effect of air staged combustion on NOx emissions in dried lignite combustion,” Energy 37, 725−736 (2012).CrossRef J. Wang, W. Fan, Y. Li, M. Xiao, K. Wang, and P. Ren, “The effect of air staged combustion on NOx emissions in dried lignite combustion,” Energy 37, 725−736 (2012).CrossRef
16.
go back to reference C. K. Man, J. R. Gibbins, J. G. Witkamp, and J. Zhang, “Coal characterization for NOx prediction in air-staged combustion of pulverized coals,” Fuel 84, 2190−2195 (2005).CrossRef C. K. Man, J. R. Gibbins, J. G. Witkamp, and J. Zhang, “Coal characterization for NOx prediction in air-staged combustion of pulverized coals,” Fuel 84, 2190−2195 (2005).CrossRef
18.
go back to reference M. Taniguchi, Y. Kamikawa, and K. Yamamoto, “Comparison of staged combustion properties between bituminous coals and low-rank coal; Fiber-shaped crystallized carbon formation, NOx emission and coal burnout properties at very high temperature,” Combust. Flame 160, 2221−2230 (2013).CrossRef M. Taniguchi, Y. Kamikawa, and K. Yamamoto, “Comparison of staged combustion properties between bituminous coals and low-rank coal; Fiber-shaped crystallized carbon formation, NOx emission and coal burnout properties at very high temperature,” Combust. Flame 160, 2221−2230 (2013).CrossRef
19.
go back to reference S. Li, Z. Chen, E. He, B. Jiang, Z. Li, and Q. Wang, “Combustion characteristics and NOx formation of retrofitted low-volatile coal-fired 330 MW utility boiler under various loads with deep-air-staging,” Appl. Therm. Eng. 110, 223−233 (2017).CrossRef S. Li, Z. Chen, E. He, B. Jiang, Z. Li, and Q. Wang, “Combustion characteristics and NOx formation of retrofitted low-volatile coal-fired 330 MW utility boiler under various loads with deep-air-staging,” Appl. Therm. Eng. 110, 223−233 (2017).CrossRef
21.
23.
go back to reference V. B. Prokhorov, S. L. Chernov, V. S. Kirichkov, and A. A. Kaverin, “Furnace numerical model development for checking the possibility of boiler retrofitting from liquid to dry ash removal,” in Proc. AIP Conf. on Heat and Mass Transfer and Hydrodynamics in Swirling Flows (HMTHSF-2019), Rybinsk, Russia, Oct. 16−18, 2019 (American Inst. of Physics, Melville, N.Y., 2020), Vol. 2211, paper id. 070006. V. B. Prokhorov, S. L. Chernov, V. S. Kirichkov, and A. A. Kaverin, “Furnace numerical model development for checking the possibility of boiler retrofitting from liquid to dry ash removal,” in Proc. AIP Conf. on Heat and Mass Transfer and Hydrodynamics in Swirling Flows (HMTHSF-2019), Rybinsk, Russia, Oct. 16−18, 2019 (American Inst. of Physics, Melville, N.Y., 2020), Vol. 2211, paper id. 070006.
24.
go back to reference L. I. Darvell, L. Ma, J. M. Jones, M. Pourkashanian, and N. Williams, “Some aspects of modelling NOx formation arising from the combustion of 100% wood in a pulverised fuel furnace,” Combust. Sci. Technol. 186, 672−683 (2014).CrossRef L. I. Darvell, L. Ma, J. M. Jones, M. Pourkashanian, and N. Williams, “Some aspects of modelling NOx formation arising from the combustion of 100% wood in a pulverised fuel furnace,” Combust. Sci. Technol. 186, 672−683 (2014).CrossRef
Metadata
Title
Investigation into the Influence of Temperature on the Formation of Nitrogen Oxides during the Staged Combustion of Low-Reactive Coal with the Use of Direct-Flow Burners
Authors
V. B. Prokhorov
S. L. Chernov
V. S. Kirichkov
V. D. Aparov
Publication date
01-09-2023
Publisher
Pleiades Publishing
Published in
Thermal Engineering / Issue 9/2023
Print ISSN: 0040-6015
Electronic ISSN: 1555-6301
DOI
https://doi.org/10.1134/S0040601523090057

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