Prediction method for temperature distribution in reduction section of gas-based direct reduced iron shaft furnace

被引：0

作者：

Ge, Junli ^{[1
]}

Bai, Minghua ^{[1
]}

Zhou, Hongliang ^{[2
]}

Wang, Jian ^{[1
]}

Piao, Yingmin ^{[1
]}

机构：

[1] National Engieering Research Center for Equipment and Technology of Cold Strip Rolling, Yanshan University, Qin Huangdao, Hebei, China

[2] School of Mechanics and Power Engineering, Henan Polytechnic University, Jiaozuo, Henan, China

来源：

Journal of Chemical and Pharmaceutical Research | 2014年 / 6卷 / 03期

关键词：

Heat transfer - Iron ores - Chemical analysis - Iron ore reduction - Efficiency - Furnaces - Porous materials - Temperature distribution;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Temperature distribution plays a crucial role in the process of direct reduced iron (DRI) production. Based on Baogang and Lunan (BL) semi-industrial equipment and process parameters, a gas-solid heat transfer model is established to study the temperature field in the reduction section of gas-based DRI shaft furnace. In the case of different reduction gas quantities in reduction section of DRI shaft furnace, iron ore pellets are simplified as porous media for the convenience of temperature field analysis with consideration of chemical reaction heat. The numerical results show that the thermal efficiency of the reduction gas decreases with the increasing of the reduction gas quantity, but the DRI shaft furnace top gas temperature increases. Meanwhile the numerical results have a good agreement with BL experimental ones, which indicates that the simplified gas-solid heat transfer model can be used to predict the temperature distribution effectively in reduction section of gas-based DRI shaft furnace.

引用

页码：717 / 722