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Research and Application of Sintering Surface Steam Spraying Technology for Energy Saving and Quality Improvement

机译：烧结表面蒸汽喷射技术在节能降耗中的研究与应用

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摘要

Spraying technology on sintering surface bed after ignition has become a hot research topic, with the purpose of achieving energy-saving, emission reduction and improvement of sintering indexes. In this paper spraying steam technology was researched from theory, experiment and practice. First of all, from the thermodynamic and kinetic analysis, the mechanism of sintering surface spraying steam was analyzed and its advantageous effect was confirmed. Based on this, sintering pot test and commercial trial were carried out respectively. The results shown that spraying steam is beneficial for increasing coke combustion efficiency with improving C0_2/(CO+C0_2) in the exhaust gas from 80% to about 85% level, through decreasing CO content of flue gas by more than 1000-2000 ppm. There was a suitable spraying amount to improve the quality of the sinter, and the spraying position of the steam cannot be excessively front and rear. Due to the low steam pressure (1 kg) and temperature (about 100 °C) compared with industrial steam (3 kg and 130 °C, respectively), the sinter quality such as yield index was affected by spraying steam in sintering pot test to a certain extent, and proper spraying amount (0.008 m3, 50 kg sinter) in sinter pot test is far smaller than application amount in commercial trial (2t/h). It is thought that suitable spraying steam parameters has a comprehensive effect of energy saving and quality improvement.
机译：点火后烧结表面床的喷涂技术已成为研究的热点，其目的是达到节能，减排，提高烧结指标的目的。本文从理论，实验和实践两方面对喷雾蒸汽技术进行了研究。首先，从热力学和动力学分析出发，分析了烧结表面喷射蒸汽的机理，并确认了其有利作用。基于此，分别进行了烧结锅试验和商业试验。结果表明，通过将烟道气中的CO含量降低1000-2000 ppm以上，喷射蒸汽有利于提高焦炭燃烧效率，将废气中的C0_2 /（CO + C0_2）从80％提高到大约85％。有适当的喷射量以提高烧结矿的质量，并且蒸汽的喷射位置不能前后过多。与工业蒸汽（分别为3 kg和130°C）相比，由于蒸汽压力（1 kg）和温度（分别为100 kg）低（分别为3 kg和130°C），因此在烧结锅测试中，通过喷射蒸汽来影响烧结质量，例如屈服指数在一定程度上，烧结锅试验中的适当喷涂量（0.008 m3，50 kg烧结矿）远小于商业试验中的喷涂量（2t / h）。认为合适的喷雾蒸汽参数具有节能和质量改善的综合效果。

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  • 来源
  • 会议地点 Phoenix(US)
  • 作者

    Yuandong Pei; Jun Xiong; Shengli Wu; Shuhai Ou; Huaiying Ma; Zhixing Zhao; Jiangshan Shi;

  • 作者单位

    University of Science and Technology Beijing, 30 Xueyuan Road, Beijing 100083 People's Republic of China,Shougang Research Institute of Technology, 69 Yangzhuang Road, Beijing 100043 People's Republic of China;

    Shougang Jingtang United Iron Steel Co., Ltd, Caofeidian, Tangshan 063200 Hebei. People's Republic of China;

    University of Science and Technology Beijing, 30 Xueyuan Road, Beijing 100083 People's Republic of China;

    Shougang Jingtang United Iron Steel Co., Ltd, Caofeidian, Tangshan 063200 Hebei. People's Republic of China;

    University of Science and Technology Beijing, 30 Xueyuan Road, Beijing 100083 People's Republic of China,Shougang Research Institute of Technology, 69 Yangzhuang Road, Beijing 100043 People's Republic of China;

    University of Science and Technology Beijing, 30 Xueyuan Road, Beijing 100083 People's Republic of China,Shougang Research Institute of Technology, 69 Yangzhuang Road, Beijing 100043 People's Republic of China;

    Shougang Jingtang United Iron Steel Co., Ltd, Caofeidian, Tangshan 063200 Hebei. People's Republic of China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Sintering; Steam; Spraying; Combustion; CO;

    机译：烧结;蒸汽;喷涂；燃烧;一氧化碳;

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