Numerical analysis of flow behavior in tuyere and raceway of oxygen blast furnace with new type of oxy-coal burner

被引：0
|
作者：
Zhang C. [1 ]
Zhang J. [1 ]
Sun H. [1 ]
Liu Z. [1 ]
机构：
[1] School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing
来源：
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2016年 / 47卷 / 05期
关键词：
Design parameters; Numerical simulation; Oxy-coal burner; Oxygen blast furnace; Raceway;
D O I：
10.11817/j.issn.1672-7207.2016.05.004
中图分类号：
学科分类号：
摘要：
Oxygen blast furnace can effectively reduce CO2 emissions by two means, pulverized coal injection and recycling of CO2-removed blast furnace gas. To study the velocity field among the tuyere and raceway region, a three-dimensional model was build up using the commercial CFD software. The factors these numerical simulations mainly focus on the number of oxygen-coal lances, the angle and distance between the blowpipe and oxy-coal lances. Numerical results show that increasing angle between the blowpipe and oxy-coal lance from 7° to 15° results in lower velocity when the oxy-coal lance is set above the blowpipe, the appropriate angle is 9°. When the lance is located below the blowpipe, the bigger the angle is, the deeper the raceway will be. In addition, when the oxy-coal burner has two lances, the lances are set at two sides of the blowpipe, i.e. vertical and horizontal distribution around the blowpipe, and the reasonable angles are 11° and 13°. Besides, the suitable distance between the blowpipe and oxy-coal lance is 75 mm when the oxy-coal lance is set above the blowpipe. © 2016, Central South University of Technology. All right reserved.
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页码：1480 / 1486
页数：6
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