Numerical Evaluation of Blast Furnace Performance under Top Gas Recycling and Lower Temperature Operation
Numerical Evaluation of Blast Furnace Performance under Top Gas Recycling and Lower Temperature Operation
复制标题
炉顶煤气回收及低温运行高炉性能数值评价
DOI：
10.1002/srin.201000103
复制
发表时间：
2010-12
影响因子：
2.2
通讯作者：
Yagi, J. -I.
中科院分区：
文献类型：
--
作者：
Chu, M.;Yagi, J. -I.
为了克服高炉低温操作条件下存在的不利问题，提高炉顶煤气碳的利用率，减少CO2排放，开发了高炉喷吹热还原煤气（HRG）回收炉顶煤气新工艺。通过多流体高炉模型对高炉炉顶煤气再循环和低温操作进行了数值评估。模拟结果表明：（1）在低温操作条件下，竖炉喷吹或竖炉与竖炉同时喷吹热还原性气体，可以有效地增加竖炉区的供热量，丰富还原气氛，促进炉料的还原，提高竖炉区的效率。(2)如果在较低温度操作的基础上通过HRG再循环炉顶煤气，则可以获得高效的低碳高炉。炉子的生产能力有了显著的提高，总还原剂用量有了显著的降低。提高了炉顶煤气碳的利用率，降低了二氧化碳的排放率。(3)总体而言，轴注和轴注同时进行时的轴效率、碳排放量和热效率都要优于其他两种单注方式。
The new process of top gas recycling by hot reducing gas (HRG) injection has been developed in this study in order to overcome the disadvantageous problems under the lower temperature operation, to enhance the utilization of top gas carbon and to reduce carbon dioxide emission of blast furnaces. Numerical evaluation of blast furnace top gas recirculation together with lower‐temperature operation was performed by means of a multi‐fluid blast furnace model. The simulation results show that, (1) under the lower temperature operation, the shaft injection, or simultaneous shaft and tuyere injection of hot reducing gas is effective to increase the heat supply and to enrich the reduction atmosphere in the shaft zone, to improve the reduction of iron burdens, and enhance the efficiency of the shaft zone. (2) If top gas is recirculated by HRG on the basis of lower temperature operation, a highly efficient low‐carbon blast furnace is obtained. The productivity of the furnace shows a remarkable increase and the total reducing agent rate shows a considerable decrease. Furthermore, the top gas carbon utilization is enhanced and the carbon dioxide emission rate is lowered. (3) Generally, shaft efficiency, carbon emission and heat efficiency under simultaneous tuyere and shaft injection are comparatively better than in the other two methods of single injection.
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影响因子：
1.8
作者：
M. Tseitlin;S. E. Lazutkin;Gennady Michail Styopin
通讯作者：
M. Tseitlin;S. E. Lazutkin;Gennady Michail Styopin
影响因子：
0.8
作者：
A. Babich;H. Gudenau;K. Mavrommatis;C. Fröhling;A. Formoso;A. Cores;L. García
通讯作者：
A. Babich;H. Gudenau;K. Mavrommatis;C. Fröhling;A. Formoso;A. Cores;L. García
DOI：
--
发表时间：
2004
期刊：
--
影响因子：
--
作者：
儲 満生
通讯作者：
儲 満生
影响因子：
2.2
作者：
M. Chu;J. Yagi;H. Nogami
通讯作者：
M. Chu;J. Yagi;H. Nogami
影响因子：
1.8
作者：
P. Austin;H. Nogami;J. Yagi
通讯作者：
P. Austin;H. Nogami;J. Yagi