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首页> 外文期刊>Energy >Numerical research on combining flue gas recirculation sintering and fuel layered distribution sintering in the iron ore sintering process
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Numerical research on combining flue gas recirculation sintering and fuel layered distribution sintering in the iron ore sintering process

机译：铁矿石烧结过程烟气​​再循环烧结与燃料分层分布烧结相结合的数值研究

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摘要

A mathematical model was established based on a porous media model and local nonequilibrium thermodynamics model. The conventional iron ore sintering (CIOS) process was simulated with this model, and the reliability of the model was verified by field testing. Based on the CIOS simulation results, and focused on maintaining the stability of the highest temperature of the sintering bed and waste heat utilization of the flue gas, flue gas recirculation sintering (FGRS) and fuel layered distribution sintering (FLDS) are proposed. Optimized iron ore sintering (OIOS) is also proposed based on the combination of FGRS and FLDS. The simulation results indicate that OIOS can increase the highest temperature of the upper part of the sintering bed and decrease that of the lower part. OIOS can increase the thickness of the sintering bed over a reasonable temperature range, making the distribution of the highest temperature in the sintering bed more reasonable and the sintering process more stable. Waste heat utilization of OIOS is increased by 1.7453 x 10~8 kJ/h and fuel consumption of OIOS is decreased by 2.66 t/h compared to values for CIOS. OIOS can decrease flue gas emissions, reduce the burden of the desulfurization system, and increase the recirculation rate of flue gas.
机译：基于多孔介质模型和局部非平衡热力学模型建立了数学模型。利用该模型对传统的铁矿石烧结工艺进行了仿真，并通过现场测试验证了模型的可靠性。基于CIOS的模拟结果，着重于保持烧结床最高温度的稳定性和烟气的余热利用，提出了烟气再循环烧结（FGRS）和燃料分层分布烧结（FLDS）。基于FGRS和FLDS的结合，还提出了优化的铁矿烧结（OIOS）。仿真结果表明，IOOS可以提高烧结床上部的最高温度，而降低下部的温度。 OIOS可以在合理的温度范围内增加烧结床的厚度，从而使烧结床中最高温度的分布更加合理，烧结过程更加稳定。与CIOS相比，IOOS的废热利用率提高了1.7453 x 10〜8 kJ / h，燃油消耗降低了2.66 t / h。监督厅可减少烟气排放，减轻脱硫系统的负担，并提高烟气的再循环率。

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  • 来源
    《Energy》 |2020年第1期|116660.1-116660.11|共11页
  • 作者

    Xiao-Hui Zhang; Peng Feng; Jia-Rui Xu; Li-Bin Feng; Shan Qing;

  • 作者单位

    State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization Kunming University of Science and Technology Kunming 650093 China;

    State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization Kunming University of Science and Technology Kunming 650093 China Faculty of Metallurgical and Energy Engineering Kunming University of Science and Technology Kunming 650093 China;

    Faculty of Metallurgical and Energy Engineering Kunming University of Science and Technology Kunming 650093 China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Iron ore sintering; Flue gas recirculation; Fuel layered distribution; Numerical simulation;

    机译：铁矿石烧结;烟气再循环;燃油分层分布;数值模拟;

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