东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2006, Vol. 27 ›› Issue (5): 509-512.DOI: -

• 论著 • 上一篇    下一篇

球团竖炉内气体流动的数值模拟

董辉;蔡九菊;王国胜;杨俊;   

  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:2013-06-23 修回日期:2013-06-23 出版日期:2006-05-15 发布日期:2013-06-23
  • 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)

Numerical simulation of gas flow distribution in pelletizing shaft furnace

Dong, Hui (1); Cai, Jiu-Ju (1); Wang, Guo-Sheng (2); Yang, Jun (1)   

  1. (1) SEPA Key Laboratory on Eco-Industry, Northeastern University, Shenyang 110004, China; (2) College of Chemical Engineering, Shenyang Institute of Chemical Technology, Shenyang 110142, China
  • Received:2013-06-23 Revised:2013-06-23 Online:2006-05-15 Published:2013-06-23
  • Contact: Dong, H.
  • About author:-
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摘要： 根据气固填料床动力学,建立了“导风墙-烘干床式”球团竖炉内气体流动的数学模型·运用自编程序数值求解炉内速度场,研究炉内气体流动的基本规律,探讨竖炉操作参数对炉内气体流动的影响规律·结果表明:焙烧风和冷却风在进口处呈放射状,之后斜向上或斜向下分别流入焙烧-预热带和导风墙内;整个均热带内气流较为薄弱;炉内存在三种气流分流的可能,流入风量比是决定气流分流的最主要因素,其中,流入风量比增加,焙烧风下行趋势增大,而冷却风上行趋势减小;临界流入风量比主要取决于结构参数和料层情况

关键词: 固定床, 球团, 竖炉, 冶金炉, 填料床, 气流分布

Abstract: According to the dynamics of gas-solid packed beds, a mathematical model of gas flow in an air internal vertical channels (IVAC)/drying bed palletizing shaft furnace (PSF) is developed with certain boundary conditions. Using a manual program to solve the gas flow velocity field, the law of gas flow distribution in the PSF is investigated to discuss how the operating parameters affect the gas flow distribution. It is revealed that both the roasting and cooling air flow run radially at inlets and then run slantingly upwards or downwards into roasting-preheating zone inside IVAC. And the gas flow in the whole soaking zone is weakened. There are possibly three gas flow patterns in PSF, which are mainly dependent on the ratio of inflow, i.e., the greater the ratio is, the higher the downward roasting air flowrate and the lower the upward air flowrate will be. The critical ratio of inflow mainly depends on the constructional parameters and packed bed conditions of PSF.

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