东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2007, Vol. 28 ›› Issue (4): 529-532.DOI: -

• 论著 • 上一篇    下一篇

球团竖炉内气流分流规律的实验研究

董辉;蔡九菊;王国胜;张亚田;   

  1. 东北大学国家环境保护生态工业重点实验室;东北大学国家环境保护生态工业重点实验室;沈阳化工学院化学工程学院;东北大学国家环境保护生态工业重点实验室 辽宁沈阳110004;辽宁沈阳110004;辽宁沈阳110142;辽宁沈阳110004
  • 收稿日期:2013-06-24 修回日期:2013-06-24 出版日期:2007-04-15 发布日期:2013-06-24
  • 通讯作者: Dong, H.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(50334020)

Experimental study on gas/air flow splitting in pelletizing shaft furnaces

Dong, Hui (1); Cai, Jiu-Ju (1); Wang, Guo-Sheng (2); Zhang, Ya-Tian (1)   

  1. (1) SEPA Key Laboratory on Eco-Industry, Northeastern University, Shenyang 110004, China; (2) College of Chemical Engineering, Shenyang Institute of Chemical Engineering, Shenyang 110142, China
  • Received:2013-06-24 Revised:2013-06-24 Online:2007-04-15 Published:2013-06-24
  • Contact: Dong, H.
  • About author:-
  • Supported by:
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摘要： 建立球团竖炉冷态实验模型,定量研究竖炉操作和结构参数对炉内气流流向和流量即气流分流的影响规律.结果表明,操作参数中,焙烧风和冷却风的流量比即流入风量比是影响气流分流的主要因素,流入风量比增大,则冷却风上行趋势减小,焙烧风下行趋势增大,且在一定工况下,流入风量比与导风墙冷却风流量比、上行焙烧风流量比成线性关系;结构参数中,焙烧带宽度、导风墙宽度、预热焙烧带高度和均热带高度是影响气流分流的主要因素,焙烧带宽度增加,或导风墙宽度减小,或预热焙烧带高度减小,或均热带高度增加,则冷却风上行趋势增加,焙烧风下行趋势减小,临界流入风量比增加.

关键词: 球团, 竖炉, 填料床, 固定床, 冶金炉, 气流

Abstract: A cold-state experimental setup was built to study the constructional and operating parameters affecting the gas/air flow direction and flowrate in pelletizing shaft furnace (PSF). Some conclusions are therefore drawn that constructional and operating parameters are both the main influencing factors on the gas/air flow splitting in PSF. Among the operating parameters, the flowrate ratio of roasting gas to cooling air, i.e. the inflow flowrate ratio k is the key influencing factor on gas/air flow splitting, and the flow-down roasting gas/air tends to increase and the flow-up cooling gas tends to decrease with the increase of inflow flowrate ratio k, and vice versa. It is found that k is linear relation to the flowrate ratio of the cooling air into internal vertical air channels (IVAC) to the flow-up roasting gas under certain operating conditions. Among the constructional parameters, the widths of both roasting zone and IVAC and the heights of both preheating-roasting zone and soaking zone are the main influencing factors on gas/air flow splitting in PSF. In case the width of roasting zone increases or the width of IVAC or the height of preheating-roasting zone decreases, the flow-up cooling air tends to decrease and the flow-down roasting gas tends to increase with the critical k increases.

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