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Trends of the low-NOx and high-burnout combustion characteristics in a cascade-arch, W-shaped flame furnace regarding with the staged-air angle

Author

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  • Wang, Jialin
  • Kuang, Min
  • Zhao, Xiaojuan
  • Wu, Haiqian
  • Ti, Shuguang
  • Chen, Chuyang
  • Jiao, Long

Abstract

For a cascade-arch-firing low-NOx and high-burnout configuration (CLHC) designated for solving the incompatible problem of strengthened low NOx combustion and good burnout in W-shaped flame furnaces, numerical simulations verified by real-furnace results of a 600 MWe furnace with the multiple-injection multiple-staging combustion technology (MIMSCT), were performed to evaluate trends of the CLHC’s in-furnace flow field, combustion, and NOx production at different staged-air angles of θ = 15°, 20°, 25°, and 30°. The flow-field symmetry and combustion performance first improved and then worsened with θ, generating a same change trend in the residual O2 at the furnace outlet, carbon content in fly ash, and emission levels of CO and NOx. The 20° setting finally established the optimal performance indexes labeled as NOx emissions of 669 mg/m3 at 6% O2 and carbon content in fly ash of 5.1%. In the NOx formation aspect along the flame travel in the CLHC, it was found that NOx was initially inhibited obviously in the preceding combustion stage but then surged in the primary combustion stage before finally reduced sharply by the reburning process. As a replacement of the prior MIMSCT, the CLHC achieved a strengthened low-NOx combustion performance with NOx reduced by 26% without affecting burnout. The prominent improvement was attributed to the combination of improving symmetrical combustion pattern, strengthening deep-air-staging conditions, lengthening flame travel by positioning hopper air, and introducing the flue gas recirculation and reburning process.

Suggested Citation

  • Wang, Jialin & Kuang, Min & Zhao, Xiaojuan & Wu, Haiqian & Ti, Shuguang & Chen, Chuyang & Jiao, Long, 2020. "Trends of the low-NOx and high-burnout combustion characteristics in a cascade-arch, W-shaped flame furnace regarding with the staged-air angle," Energy, Elsevier, vol. 212(C).
    • Handle: RePEc:eee:energy:v:212:y:2020:i:c:s0360544220318752
    DOI: 10.1016/j.energy.2020.118768
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    1. Yu, Shiwei & Wei, Yi-Ming & Guo, Haixiang & Ding, Liping, 2014. "Carbon emission coefficient measurement of the coal-to-power energy chain in China," Applied Energy, Elsevier, vol. 114(C), pages 290-300.
    2. Liu, Yacheng & Fan, Weidong & Li, Yu, 2016. "Numerical investigation of air-staged combustion emphasizing char gasification and gas temperature deviation in a large-scale, tangentially fired pulverized-coal boiler," Applied Energy, Elsevier, vol. 177(C), pages 323-334.
    3. Staiger, B. & Unterberger, S. & Berger, R. & Hein, Klaus R.G., 2005. "Development of an air staging technology to reduce NOx emissions in grate fired boilers," Energy, Elsevier, vol. 30(8), pages 1429-1438.
    4. 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.
    5. Zhu, Zhi-Shuang & Liao, Hua & Cao, Huai-Shu & Wang, Lu & Wei, Yi-Ming & Yan, Jinyue, 2014. "The differences of carbon intensity reduction rate across 89 countries in recent three decades," Applied Energy, Elsevier, vol. 113(C), pages 808-815.
    6. Tan, Peng & He, Biao & Zhang, Cheng & Rao, Debei & Li, Shengnan & Fang, Qingyan & Chen, Gang, 2019. "Dynamic modeling of NOX emission in a 660 MW coal-fired boiler with long short-term memory," Energy, Elsevier, vol. 176(C), pages 429-436.
    7. Zeng, Lingyan & Song, Minhang & Li, Xiaoguang & Liu, Yibo & Li, Zhengqi & Chen, Zhichao, 2017. "Factors affecting the downward flame depth in a 600 MW down-fired boiler incorporating multiple-injection and multiple-staging technology," Energy, Elsevier, vol. 118(C), pages 333-344.
    8. 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.
    9. Li, Zhengqi & Liu, Guangkui & Chen, Zhichao & Zeng, Lingyan & Zhu, Qunyi, 2013. "Effect of angle of arch-supplied overfire air on flow, combustion characteristics and NOx emissions of a down-fired utility boiler," Energy, Elsevier, vol. 59(C), pages 377-386.
    10. Wang, Qingxiang & Chen, Zhichao & Wang, Liang & Zeng, Lingyan & Li, Zhengqi, 2018. "Application of eccentric-swirl-secondary-air combustion technology for high-efficiency and low-NOx performance on a large-scale down-fired boiler with swirl burners," Applied Energy, Elsevier, vol. 223(C), pages 358-368.
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    1. Jiao, Long & Kuang, Min & Chen, Yangyang & Liu, Sheng & Wang, Xiu, 2021. "Detailed measurements of in-furnace gas temperature and species concentration distribution regarding the primary-air distribution mode in a spreader and reversal chain-grate furnace," Energy, Elsevier, vol. 235(C).
    2. Li, Xiaoguang & Zeng, Lingyan & Zhang, Ning & Zhang, Xin & Song, Minhang & Chen, Zhichao & Li, Zhengqi, 2022. "Effects of the gas/particle flow and combustion characteristics on water-wall temperature and energy conversion in a supercritical down-fired boiler at different secondary-air distributions," Energy, Elsevier, vol. 238(PC).

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