东北大学学报:自然科学版 ›› 2017, Vol. 38 ›› Issue (5): 661-666.DOI: 10.12068/j.issn.1005-3026.2017.05.011

• 材料与冶金 • 上一篇    下一篇

烧结烟气SO2浓度分布规律及影响因素分析

贾冯睿1,2, 王恩刚1, 赫冀成1, 董辉1   

  1. (1. 东北大学 冶金学院, 辽宁 沈阳110819; 2. 辽宁石油化工大学 石油天然气工程学院, 辽宁 抚顺113001)
  • 收稿日期:2016-05-31 修回日期:2016-05-31 出版日期:2017-05-15 发布日期:2017-05-11
  • 通讯作者: 贾冯睿
  • 作者简介:贾冯睿(1983-),男,辽宁抚顺人,东北大学博士研究生; 王恩刚(1962-),男,辽宁沈阳人,东北大学教授,博士生导师; 赫冀成(1943-),男,辽宁瓦房店人,东北大学教授,博士生导师; 董辉(1969-),男,辽宁沈阳人,东北大学教授,博士生导师.
  • 基金资助:

    国家自然科学基金资助项目(51274065).

Analysis of Flue Gas SO2 Distribution and Influencing Factors During Sintering Process

JIA Feng-rui1,2, WANG En-gang1, HE Ji-cheng1, DONG Hui1   

  1. 1. School of Metallurgy, Northeastern University, Shenyang 110819, China; 2. College of Petroleum Engineering, Liaoning Shihua University, Fushun 113001, China.
  • Received:2016-05-31 Revised:2016-05-31 Online:2017-05-15 Published:2017-05-11
  • Contact: JIA Feng-rui
  • About author:-
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摘要:

根据混合料烧结过程SO2的吸收-放出机理,建立了烧结烟气SO2浓度分布计算模型,以国内某360m2烧结机为例,研究了在烧结机带长方向上料层高度、台车运行速率、混合料配碳量和含水量对烟气SO2浓度分布的影响.研究结果表明:烧结烟气SO2浓度在带长方向上呈Cubic函数规律分布,SO2浓度峰值点的位置随混合料配碳量的增加及料层高度、台车运行速率和混合料含水量的减少而前移,且前3种因素的变化对SO2浓度分布影响较明显;在混合料含水率一定(7%)的情况下,控制料层高度在650~700mm之间,台车运行速率和混合料配碳量分别约为2.3m/min和3%,烧结机运行方向上约前1/3段的SO2浓度低于200mg/m3.

关键词: 烧结烟气, SO2浓度, 影响因素, 烧结过程, SO2分布

Abstract:

Based on the SO2 absorption-emission mechanism, a model for computing flue gas SO2 concentration distribution during sintering was established. After the comparison of the computional results and the in-site data from a 360m2 sinter machine in China, the model was validated. Then, the factors influencing on the flue gas distribution were investigated, including the sinter-bed height, speed, carbon content and moisture content. The results indicate that the flue gas SO2 distributes as a Cubic curve along the sinter machine length. The peak value of the SO2 concentration arrives earlier with higher carbon content and lower sinter-bed height, slower speed and lower moisture content, and the first three ones affect the flue gas SO2 concentration more. The SO2 concentration from the top to one-third of the sinter machine in the length direction is less 200mg/m3, when the sinter-bed height, sinter-bed speed and the moisture and carbon content is, 650~700mm, 2.3m/min, 7%and 3%,respectively.

Key words: flue gas, SO2 concentration, influencing factor, sintering process, SO2 distribution

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