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PDA research on a novel pulverized coal combustion technology for a large utility boiler

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  • Fan, Weidong
  • Li, Youyi
  • Lin, Zhengchun
  • Zhang, Mingchuan

Abstract

In this paper, a new technology for a tangential firing pulverized coal boiler, high efficiency and low NOx combustion technology with multiple air-staged and a large-angle counter flow fuel-rich jet (ACCT for short) is proposed. To verify the characteristics of this technology, experiments of two combustion technologies, ACCT and CFS-1 (Concentric Firing System-1), are carried out under a cold model of a 1025t/h tangential firing boiler with a PDA (particle dynamics anemometer). The distributions of velocity, particle concentration, particle diameters and the particle volume flux of primary air and secondary air are obtained. The results show that the fuel-rich primary air of ACCT can go deeper into the furnace and mix with the main flow better, which means that the counter flow of fuel-rich jets in ACCT can realize stable combustion, low NOx emission and slagging prevention.

Suggested Citation

  • Fan, Weidong & Li, Youyi & Lin, Zhengchun & Zhang, Mingchuan, 2010. "PDA research on a novel pulverized coal combustion technology for a large utility boiler," Energy, Elsevier, vol. 35(5), pages 2141-2148.
    • Handle: RePEc:eee:energy:v:35:y:2010:i:5:p:2141-2148
    DOI: 10.1016/j.energy.2010.01.033
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    Cited by:

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    2. Jing, Jianping & Li, Zhengqi & Zhu, Qunyi & Chen, Zhichao & Wang, Lin & Chen, Lizhe, 2011. "Influence of the outer secondary air vane angle on the gas/particle flow characteristics near the double swirl flow burner region," Energy, Elsevier, vol. 36(1), pages 258-267.
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    7. Kuang, Min & Li, Zhengqi & Zhu, Qunyi & Wang, Yang & Chen, Lizhe & Zhang, Yan, 2012. "Experimental gas/particle flow characteristics of a down-fired 600 MWe supercritical utility boiler at different staged-air ratios," Energy, Elsevier, vol. 42(1), pages 411-423.
    8. Jing, Jianping & Li, Zhengqi & Wang, Lin & Chen, Lizhe & Yang, Guohua, 2011. "Influence of secondary air mass flow rates on gas/particle flow characteristics near the swirl burner region," Energy, Elsevier, vol. 36(5), pages 3599-3605.
    9. Yuan, Zhenhua & Chen, Zhichao & Wu, Xiaolan & Zhang, Ning & Bian, Liguo & Qiao, Yanyu & Li, Jiawei & Li, Zhengqi, 2022. "An innovative low-NOx combustion technology for industrial pulverized coal boiler: Gas-particle flow characteristics with different radial-air-staged levels," Energy, Elsevier, vol. 260(C).
    10. Ren, Feng & Li, Zhengqi & Liu, Guangkui & Chen, Zhichao & Zhu, Qunyi, 2011. "Combustion and NOx emissions characteristics of a down-fired 660-MWe utility boiler retro-fitted with air-surrounding-fuel concept," Energy, Elsevier, vol. 36(1), pages 70-77.
    11. Chen, Zhichao & Li, Zhengqi & Wang, Zhenwang & Liu, Chunlong & Chen, Lizhe & Zhu, Qunyi & Li, Yuan, 2011. "The influence of distance between adjacent rings on the gas/particle flow characteristics of a conical rings concentrator," Energy, Elsevier, vol. 36(5), pages 2557-2564.
    12. Liu, Chunlong & Li, Zhengqi & Zeng, Lingyan & Zhang, Qinghua & Hu, Richa & Zhang, Xusheng & Guo, Liang & Huang, Yong & Yang, Xianwei & Chen, Liheng, 2016. "Gas/particle two-phase flow characteristics of a down-fired 350 MWe supercritical utility boiler at different tertiary air ratios," Energy, Elsevier, vol. 102(C), pages 54-64.
    13. Wang, Qingxiang & Chen, Zhichao & Li, Liankai & Zeng, Lingyan & Li, Zhengqi, 2020. "Achievement in ultra-low-load combustion stability for an anthracite- and down-fired boiler after applying novel swirl burners: From laboratory experiments to industrial applications," Energy, Elsevier, vol. 192(C).
    14. Kuang, Min & Li, Zhengqi, 2014. "Review of gas/particle flow, coal combustion, and NOx emission characteristics within down-fired boilers," Energy, Elsevier, vol. 69(C), pages 144-178.
    15. Jing, Jianping & Li, Zhengqi & Zhu, Qunyi & Chen, Zhichao & Ren, Feng, 2011. "Influence of primary air ratio on flow and combustion characteristics and NOx emissions of a new swirl coal burner," Energy, Elsevier, vol. 36(2), pages 1206-1213.
    16. Liu, Chunlong & Li, Zhengqi & Jing, Xinjing & Xie, Yiquan & Zhang, Qinghua & Zong, Qiudong, 2014. "Experimental investigation into gas/particle flow in a down-fired 350 MWe supercritical utility boiler at different over-fire air ratios," Energy, Elsevier, vol. 64(C), pages 771-778.
    17. Song Wu & Defu Che & Zhiguo Wang & Xiaohui Su, 2020. "NO x Emissions and Nitrogen Fate at High Temperatures in Staged Combustion," Energies, MDPI, vol. 13(14), pages 1-17, July.
    18. Kuang, Min & Li, Zhengqi & Zhang, Yan & Chen, Xiachao & Jia, Jinzhao & Zhu, Qunyi, 2012. "Asymmetric combustion characteristics and NOx emissions of a down-fired 300 MWe utility boiler at different boiler loads," Energy, Elsevier, vol. 37(1), pages 580-590.
    19. Zeng, Lingyan & Li, Zhengqi & Zhao, Guangbo & Li, Jing & Zhang, Fucheng & Shen, Shanping & Chen, Lizhe, 2011. "The influence of swirl burner structure on the gas/particle flow characteristics," Energy, Elsevier, vol. 36(10), pages 6184-6194.
    20. Fang, Neng & Li, Zhengqi & Xie, Cheng & Liu, Shuxuan & Lu, Yue & Zeng, Lingyan & Chen, Zhichao, 2021. "Influence of the multi-burner bias angle on the air/particle flow characteristics in an improved fly ash entrained-flow gasifier," Energy, Elsevier, vol. 234(C).
    21. Lin Boqiang & Kui Liu, 2017. "Using LMDI to Analyze the Decoupling of Carbon Dioxide Emissions from China’s Heavy Industry," Sustainability, MDPI, vol. 9(7), pages 1-16, July.

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