Effect of methane-hydrogen mixtures on flow and combustion of coherent jets

被引：7
|
作者：
Cheng, Ting [1 ,2 ]
Zhu, Rong [1 ,2 ]
Dong, Kai [1 ,2 ]
机构：
[1] Univ Sci & Technol Beijing, Sch Met & Ecol Engn, Beijing 100083, Peoples R China
[2] Univ Sci & Technol Beijing, Beijing Key Lab, Res Ctr Special Melting & Preparat High End Met M, Beijing 100083, Peoples R China
来源：
JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL | 2017年 / 24卷 / 11期
基金：
中国国家自然科学基金;
关键词：
Supersonic jet; Numerical simulation; Mixed fuel gas; Flow field; Combustion characteristic; SIMULATION; HEAT;
D O I：
10.1016/S1006-706X(17)30166-8
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Coherent jets are widely used in electric arc furnace (EAF) steelmaking to increase the oxygen utilization and chemical reaction rates. However, the influence of fuel gas combustion on jet behavior is not fully understood yet. The flow and combustion characteristics of a coherent jet were thus investigated at steelmaking temperature using Fluent software, and a detailed chemical kinetic reaction mechanism was used in the combustion reaction model. The axial velocity and total temperature of the supersonic jet were measured via hot state experiments. The simulation results were compared with the experimental data and the empirical jet model proposed by Ito and Muchi and good consistency was obtained. The research results indicated that the potential core length of the coherent jet can he prolonged by optimizing the combustion effect of the fuel gas. Besides, the behavior of the supersonic jet in the subsonic section was also investigated, as it is an important factor for controlling the position of the oxygen lance. The investigation indicated that the attenuation of the coherent jet is more notable than that of the conventional jet in the subsonic section.
引用
收藏
页码：1143 / 1151
页数：9
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