东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2012, Vol. 33 ›› Issue (9): 1299-1302.DOI: -

• 论著 • 上一篇    下一篇

烧结余热回收竖罐内料层传热过程数值计算

董辉;李磊;蔡九菊;力杰;   

  1. 东北大学 国家环境保护生态工业重点实验室;中国北方发动机研究所;
  • 收稿日期:2013-06-19 修回日期:2013-06-19 出版日期:2012-09-15 发布日期:2013-04-04
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    国家高技术研究发展计划项目(2009AA05Z215);;

Numerical simulation of heat exchange in vertical tank of waste heat recovery

Dong, Hui (1); Li, Lei (1); Cai, Jiu-Ju (1); Li, Jie (2)   

  1. (1) SEPA Key Laboratory on Eco-Industry, Northeastern University, Shenyang 110819, China; (2) China North Engine Research Institute, Datong 037000, China
  • Received:2013-06-19 Revised:2013-06-19 Online:2012-09-15 Published:2013-04-04
  • Contact: Dong, H.
  • About author:-
  • Supported by:
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摘要： 罐体料层内气固传热过程是决定罐式回收是否可行的主要因素之一.采用Comsol Multiphysics软件,基于稳定传热前提下,计算了罐体料层内气固传热过程,研究竖罐内的传热规律.研究结果表明:气固比和料层高度是影响料层气固传热的最主要因素,随着气料比增加,烧结矿和气体出口温度逐渐降低,气体所携带的值呈现出先增加后减小的趋势;随着料层高度增加,气料比逐渐下降,气体出口温度逐渐增加,气体携带的值呈现先增大后减小的趋势.针对国内某典型360m2烧结机,配套单罐体,料层高度6～7m,气料比为1 500～1 650m3/t;配套双罐体,料层高度5～6m,气料比为1 360～1 550m3/t.

关键词: 烧结, 余热, 气固传热, 竖罐式回收, 数值计算

Abstract: Gas-solid heat transfer process in sinter bed layer is one key factor deciding whether waste heat recovery with vertical tank is feasible. Using Comsol Multiphysics software, the heat exchange in vertical tank was calculated on the basis of the steady heat transfer condition. The results showed that the ratio of gas to sinter and the depth of bed layer are the main factors affecting the heat exchange in vertical tank. The outlet temperature of the sinter and cooling gas is reduced gradually with increase of the ratio of gas to sinter. The value of exergy carried by the cooling gas increases firstly and then decreases with increase of the ratio of gas to sinter. The outlet temperature of cooling gas increases gradually and the ratio of gas to sinter increases with the increase of depth of bed layer. The value of exergy carried by the cooling gas increases firstly and then decreases with increase of depth of bed layer. When matching a single vertical tank for a 360 m2 sintering machine, the appropriate height is 6~7 m and the ratio of gas to sinter should be in the range of 1500~1650 m3/t. When matching two vertical tank for the 360 m2 sintering machine, the appropriate height is 5~6 m and the ratio of gas to sinter should be in the range of 1360~1550 m3/t.

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