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Performance of fuel-air combustion in a reheating furnace at different flowrate and inlet conditions

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  • Liu, Yiwei
  • Wang, Jin
  • Min, Chunhua
  • Xie, Gongnan
  • Sundén, Bengt

Abstract

A geometry model for simulating the gas circulation, heat transfer and slab heating process in a reheating furnace was developed with numerical simulation. The slabs are heated in the furnace and the temperature of the slabs become above more than 1500 K, and then they are transported to the rolling mill. The slab heating in a reheating furnace is influenced by many factors, such as gas velocity, the movement speed of the slab, the height and spacing of the burners and others. The slab heating characteristics in the walking beam type reheating furnace were studied by considering the slab movement. The movement of the slabs was processed by transferring temperature data from the previous location to the next location. It was assumed that no time is spent for moving the slabs. Especially, the effects of different inlet boundaries of the burners were investigated. Results show that the entrainment effect from the inner air flow results in a larger coverage area of the flames, and there is an increase of more than 28.5% in the slab temperature over the whole furnace.

Suggested Citation

  • Liu, Yiwei & Wang, Jin & Min, Chunhua & Xie, Gongnan & Sundén, Bengt, 2020. "Performance of fuel-air combustion in a reheating furnace at different flowrate and inlet conditions," Energy, Elsevier, vol. 206(C).
    • Handle: RePEc:eee:energy:v:206:y:2020:i:c:s036054422031313x
    DOI: 10.1016/j.energy.2020.118206
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    References listed on IDEAS

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    1. Hu, Yukun & Tan, CK & Niska, John & Chowdhury, Jahedul Islam & Balta-Ozkan, Nazmiye & Varga, Liz & Roach, Paul Alun & Wang, Chunsheng, 2019. "Modelling and simulation of steel reheating processes under oxy-fuel combustion conditions – Technical and environmental perspectives," Energy, Elsevier, vol. 185(C), pages 730-743.
    2. Chen, Demin & Lu, Biao & Dai, FangQin & Chen, Guang & Zhang, Xihe, 2018. "Bottleneck of slab thermal efficiency in reheating furnace based on energy apportionment model," Energy, Elsevier, vol. 150(C), pages 1058-1069.
    3. Liu, H. & Saffaripour, M. & Mellin, P. & Grip, C.-E. & Yang, W. & Blasiak, W., 2014. "A thermodynamic study of hot syngas impurities in steel reheating furnaces – Corrosion and interaction with oxide scales," Energy, Elsevier, vol. 77(C), pages 352-361.
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    Cited by:

    1. Yang Lipo & Liu Yunpeng & Hou Yingwu & Zhang Yongshun, 2022. "Cascade relationship between flow field characteristics and smoke emissions in the industrial reheating furnace [Analysis of slab heating characteristics in a reheating furnace, energy convers]," International Journal of Low-Carbon Technologies, Oxford University Press, vol. 17, pages 308-320.

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