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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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    12. Zhang, Xin & Chen, Zhichao & Hou, Jian & Liu, Zheng & Zeng, Lingyan & Li, Zhengqi, 2022. "Evaluation of wide-range coal combustion performance of a novel down-fired combustion technology based on gas–solid two-phase flow characteristics," Energy, Elsevier, vol. 248(C).
    13. 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.
    14. 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.
    15. 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.
    16. 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.
    17. 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.
    18. 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.
    19. Kuang, Min & Li, Zhengqi & Zhu, Qunyi & Zhang, Yan, 2013. "Performance assessment of staged-air declination in improving asymmetric gas/particle flow characteristics within a down-fired 600 MWe supercritical utility boiler," Energy, Elsevier, vol. 49(C), pages 423-433.
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    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.
    22. Kuang, Min & Zhu, Qunyi & Ling, Zhongqian & Ti, Shuguang & Li, Zhengqi, 2017. "Improving gas/particle flow deflection and asymmetric combustion of a 600 MWe supercritical down-fired boiler by increasing its upper furnace height," Energy, Elsevier, vol. 127(C), pages 581-593.

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