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Combustion Characteristics and NO x Emission through a Swirling Burner with Adjustable Flaring Angle

Author

Listed:
  • Yafei Zhang

    (Mechanical Engineering College, Xi’an Shiyou University, Xi’an 710065, China)

  • Rui Luo

    (Xi’an Thermal Power Research Institute Co., Ltd., Xi’an 710032, China)

  • Yihua Dou

    (Mechanical Engineering College, Xi’an Shiyou University, Xi’an 710065, China)

  • Qulan Zhou

    (State Key Laboratory of Multiphase Flow in Power Engineering, Xi’an Jiaotong University, Xi’an 710049, China)

Abstract

A swirling burner with a variable inner secondary air (ISA) flaring angle β is proposed and a laboratory scale opposed-firing furnace is built. Temperature distribution and NO x emission are designedly measured. The combustion characteristics affected by variable β are experimentally evaluated from ignition and burnout data. Meanwhile, NO x reduction by the variable β is analyzed through emissions measurements. Different inner/outer primary coal-air concentration ratios γ , thermal loads and coal types are considered in this study. Results indicate that β variation provides a new approach to promote ignition and burnout, as well as NO x emission reduction under conditions of fuel rich/lean combustion and load variation. The recommended β of a swirling burner under different conditions is not always constant. The optimal β opt of the swirling burner under all conditions for different burning performance are summarized in the form of curves, which could provide reference for exquisite combustion adjustment.

Suggested Citation

  • Yafei Zhang & Rui Luo & Yihua Dou & Qulan Zhou, 2018. "Combustion Characteristics and NO x Emission through a Swirling Burner with Adjustable Flaring Angle," Energies, MDPI, vol. 11(8), pages 1-14, August.
    • Handle: RePEc:gam:jeners:v:11:y:2018:i:8:p:2173-:d:164653
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    References listed on IDEAS

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    Cited by:

    1. 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.

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