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Experimental Study on Denitration Transformation of CFB Boiler Burning Fujian Anthracite

Author

Listed:
  • Wenting Zhou

    (Key Laboratory of Energy Cleaning Utilization and Development of Fujian Province, Jimei University, Xiamen 361021, China
    Cleaning Combustion and Energy Utilization Research Center of Fujian Province, Jimei University, Xiamen 361021, China)

  • Hongzhou He

    (Key Laboratory of Energy Cleaning Utilization and Development of Fujian Province, Jimei University, Xiamen 361021, China
    Cleaning Combustion and Energy Utilization Research Center of Fujian Province, Jimei University, Xiamen 361021, China)

  • Huanghuang Zhuang

    (Key Laboratory of Energy Cleaning Utilization and Development of Fujian Province, Jimei University, Xiamen 361021, China
    Cleaning Combustion and Energy Utilization Research Center of Fujian Province, Jimei University, Xiamen 361021, China)

Abstract

Two 75 t/h medium-temperature separated circulating fluidized bed boilers burning Fujian anthracite were upgraded with low NOx combustion (LNC). By reducing the effective cross-sectional area of the air distributor (from 13.43 m 2 to 11.38 m 2 ), improving the secondary air rate (from 40% to 45%), adjusting the secondary air supply method (adding a layer of upper secondary air, raising the height of the lower secondary air nozzle (0.4 m), and increasing the secondary air speed (from 48 m/s to 54 m/s), the reform of low nitrogen combustion was carried out. The transformation achieved remarkable results, i.e., the original NOx emission concentration can be controlled between 140–160 mg/m 3 after the transformation, and the lowest value is below 120 mg/m 3 .

Suggested Citation

  • Wenting Zhou & Hongzhou He & Huanghuang Zhuang, 2023. "Experimental Study on Denitration Transformation of CFB Boiler Burning Fujian Anthracite," Energies, MDPI, vol. 16(6), pages 1-12, March.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:6:p:2535-:d:1090613
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