Numerical simulation of inner characteristics in COREX shaft furnace with center gas distribution: influence of bed structure
Numerical simulation of inner characteristics in COREX shaft furnace with center gas distribution: influence of bed structure
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中心布气 COREX 竖炉内部特性的数值模拟：床层结构的影响
DOI：
10.1515/ijcre-2022-0004
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发表时间：
2022-05
影响因子：
1.6
通讯作者：
Xiaodong Ma
中科院分区：
文献类型：
--
作者：
Heng Zhou;Kun Xu;Jian Huang;Mingyin Kou;Shengli Wu;Zuoliang Zhang;Baojun Zhao;Xiaodong Ma
摘要 COREX竖炉的填料结构，如填料密度和粒度分布，直接影响气体流量和反应过程。开发了二维稳态数学模型来研究中心供气的 COREX 竖炉中五种填充结构对气流、压力分布、物质组成和固体金属化率的影响。结果表明，Case-P下气体速度沿径向方向相对均匀。在Case-InV和Case-V下，气体速度从中心到壁区分别逐渐增大和减小。 Case-M中轴上部的气体速度云图呈“M”形，而Case-W中则呈“W”形。五种填充结构下的压降顺序为Case-P > Case-M > Case-W > Case-InV > Case-V，对于固体金属化率来说，顺序为Case-V > Case-W > Case-P > Case-M > Case-InV。由于Case-V具有最低的压降和最大的金属化率，实际生产中的装料矩阵应向COREX竖炉填充床上部的“V”形炉料轮廓发展。
Abstract The packed structure, such as packing density and particle size distribution, of COREX shaft furnace, directly affects the gas flow and reaction process. A two-dimensional steady-state mathematical model was developed to study the influence of five packed structures on the gas flow, pressure distribution, species composition, and solid metallization rate in a COREX shaft furnace with center gas supply. The results show that the gas velocity is relatively uniform along the radial direction under Case-P. Under Case-InV and Case-V, the gas velocity increases and decreases gradually from the center to the wall zone respectively. The gas velocity contour in the upper part of the shaft in Case-M is ‘M’ shape, while it shows ‘W’ shape in Case-W. The order of pressure drop under five packed structures is Case-P > Case-M > Case-W > Case-InV > Case-V, and for the solid metallization rate, the order is Case-V > Case-W > Case-P > Case-M > Case- InV. As Case-V has the lowest pressure drop and largest metallization rate, the charging matrix in practical production should develop towards a ‘V’ shaped burden profile in the upper of the packed bed in the COREX shaft furnace.
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DOI：
10.3390/ma11101865
发表时间：
2018-10-01
期刊：
Materials (Basel, Switzerland)
影响因子：
--
作者：
Hamadeh H;Mirgaux O;Patisson F
通讯作者：
Patisson F
影响因子：
4.2
作者：
E. D. Negri;O. Alfano;M. G. Chiovetta
通讯作者：
E. D. Negri;O. Alfano;M. G. Chiovetta
影响因子：
5.2
作者：
Mingyin Kou;Jian Xu;Heng Zhou;Bingjie Wen;Kai Gu;Shun Yao;Shengli Wu
通讯作者：
Mingyin Kou;Jian Xu;Heng Zhou;Bingjie Wen;Kai Gu;Shun Yao;Shengli Wu
影响因子：
8.7
作者：
Hanbin Zhong;Q. Xiong;L. Yin;Juntao Zhang;Yuqin Zhu;Shengrong Liang;B. Niu;Xinyu Zhang
通讯作者：
Hanbin Zhong;Q. Xiong;L. Yin;Juntao Zhang;Yuqin Zhu;Shengrong Liang;B. Niu;Xinyu Zhang
影响因子：
1.8
作者：
R. Takahashi;Yoshikazu Takahashi;J. Yagi;Y. Omori
通讯作者：
R. Takahashi;Yoshikazu Takahashi;J. Yagi;Y. Omori