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Nitric oxide emission reduction and thermal characteristics of fuel-pulsed oscillating combustion in an industrial burner system

Author

Listed:
  • Jang, Byunghwa
  • Oh, Changyong
  • Ahn, Sungsu
  • Kim, Yeongkyun
  • Park, Jonghyun
  • Choi, Minsung
  • Sung, Yonmo

Abstract

An experimental study was conducted on the effects of non-oscillating and oscillating combustions on nitric oxide (NO)-emission reduction and heat-transfer enhancement in an industrial low-NOx burner for reheating furnaces. Natural gas was periodically supplied by an oscillating control valve equipped with a rotary-type disk generating an oscillating fuel flow inside the furnace. The furnace temperatures and gas-species concentrations were measured for non-oscillating and oscillating combustions with the oscillating-frequency and duty ratio in the ranges of 1–5 Hz and 10–40%, respectively. The flame sizes in oscillating combustion increased (decreased) under a fuel-rich (fuel-lean) combustion condition, corresponding to the oscillating fuel-flow rates. The NO-reduction efficiency of the oscillating combustion increased as the oscillating frequency (Hz) decreased and as the duty ratio (%) increased in contrast to the non-oscillating combustion. The maximum NO reduction was ∼32% under the 1 Hz/40% oscillating combustion. Although the peak temperature was lower in the oscillating combustion than in the non-oscillating combustion, the overall temperature distribution in the oscillating condition was higher than that in the non-oscillating combustion. Thus, the oscillating combustion improved the furnace-heating performance by ∼9.8%. Consequently, it effectively facilitated NO-emission reduction and heat-transfer enhancement simultaneously.

Suggested Citation

  • Jang, Byunghwa & Oh, Changyong & Ahn, Sungsu & Kim, Yeongkyun & Park, Jonghyun & Choi, Minsung & Sung, Yonmo, 2021. "Nitric oxide emission reduction and thermal characteristics of fuel-pulsed oscillating combustion in an industrial burner system," Energy, Elsevier, vol. 216(C).
    • Handle: RePEc:eee:energy:v:216:y:2021:i:c:s0360544220323707
    DOI: 10.1016/j.energy.2020.119263
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    References listed on IDEAS

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    1. Lu, Biao & Tang, Kai & Chen, Demin & Han, Yunlong & Wang, Suojun & He, Xin & Chen, Guang, 2019. "A novel approach for lean energy operation based on energy apportionment model in reheating furnace," Energy, Elsevier, vol. 182(C), pages 1239-1249.
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    Cited by:

    1. Yonmo Sung & Seungtae Kim & Byunghwa Jang & Changyong Oh & Taeyun Jee & Soonil Park & Kwansic Park & Siyoul Chang, 2021. "Nitric Oxide Emission Reduction in Reheating Furnaces through Burner and Furnace Air-Staged Combustions," Energies, MDPI, vol. 14(6), pages 1-15, March.

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    1. Yonmo Sung & Seungtae Kim & Byunghwa Jang & Changyong Oh & Taeyun Jee & Soonil Park & Kwansic Park & Siyoul Chang, 2021. "Nitric Oxide Emission Reduction in Reheating Furnaces through Burner and Furnace Air-Staged Combustions," Energies, MDPI, vol. 14(6), pages 1-15, March.

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