TY - JOUR
T1 - Blast furnace hydrogen-rich metallurgy-research on efficiency injection of natural gas and pulverized coal
AU - Zhang, Cuiliu
AU - Vladislav, Listopadov
AU - Xu, Runsheng
AU - Sergey, Grachev
AU - Jiao, Kexin
AU - Zhang, Jianliang
AU - Li, Tao
AU - Aleksei, Ternovykh
AU - Wang, Chuan
AU - Wang, Guangwei
N1 - Funding Information:
The author would like to thank Professor Jianliang Zhang from University of Science and Technology Beijing for his technical help and thank Professor Runsheng Xu and Guangwei Wang for the help in the simulation and writing process also thank Kexin Jiao for his help in revising the paper. This work was also supported by the Novolopetsk Steel, National Science Foundation of China (No. 52074029, 51804026) and the USTB-NTUT Joint Research Program (No.06310063). And the author would like to acknowledge the financial support from OSMET 3.0 project (dnr: 2020-04140) funded by Sweden’s Innovation Agency (VINNOVA). Finally, we express thanks to the individuals and organizations who have helped us in the research process.
Funding Information:
The author would like to thank Professor Jianliang Zhang from University of Science and Technology Beijing for his technical help and thank Professor Runsheng Xu and Guangwei Wang for the help in the simulation and writing process also thank Kexin Jiao for his help in revising the paper. This work was also supported by the Novolopetsk Steel, National Science Foundation of China (No. 52074029, 51804026) and the USTB-NTUT Joint Research Program (No.06310063). And the author would like to acknowledge the financial support from OSMET 3.0 project (dnr: 2020-04140) funded by Sweden's Innovation Agency (VINNOVA). Finally, we express thanks to the individuals and organizations who have helped us in the research process.
Publisher Copyright:
© 2021 Elsevier Ltd
PY - 2022/3/1
Y1 - 2022/3/1
N2 - Natural gas (NG) can replace part of pulverized coal (PC) in the blast furnace (BF) injection as the clean and high-calorific hydrogen-rich energy, which can reduce environmental pollution and energy consumption in molten iron production. In this work, the method of numerical simulation is used to first compare and analyze the differences of NG and PC mixed injection and only PCI on the thermal state, gas composition and PC burnout in the tuyere and raceway of a Russian BF. The research results show that when NG and PC are injected, the temperature near the wall of the tuyere is higher, but the average temperature in the raceway is lower. Then we further clarify the influences of injection parameters on the transmission and combustion performances of PC under the condition of mixed injection of NG and PC. It can be concluded that with the diameter of the NG lance increases, the oxygen consumed by NG combustion in the tuyere increases, resulting in a decrease in the burnout of PC. The change of the NG lance position has relatively less apparent effect on transmission and combustion within the tuyere and raceway of the BF. In addition, as the NG injection (NGI) rate increases from 47 m3/t to 67 m3/t, the oxygen consumption of NG in the tuyere and raceway increases, causing the decrease of PC burnout from 70.11% to 68.31%, the reduction of the CO content but the increase of the H2 content in the primary gas, which can effectively reduce CO2 emissions.
AB - Natural gas (NG) can replace part of pulverized coal (PC) in the blast furnace (BF) injection as the clean and high-calorific hydrogen-rich energy, which can reduce environmental pollution and energy consumption in molten iron production. In this work, the method of numerical simulation is used to first compare and analyze the differences of NG and PC mixed injection and only PCI on the thermal state, gas composition and PC burnout in the tuyere and raceway of a Russian BF. The research results show that when NG and PC are injected, the temperature near the wall of the tuyere is higher, but the average temperature in the raceway is lower. Then we further clarify the influences of injection parameters on the transmission and combustion performances of PC under the condition of mixed injection of NG and PC. It can be concluded that with the diameter of the NG lance increases, the oxygen consumed by NG combustion in the tuyere increases, resulting in a decrease in the burnout of PC. The change of the NG lance position has relatively less apparent effect on transmission and combustion within the tuyere and raceway of the BF. In addition, as the NG injection (NGI) rate increases from 47 m3/t to 67 m3/t, the oxygen consumption of NG in the tuyere and raceway increases, causing the decrease of PC burnout from 70.11% to 68.31%, the reduction of the CO content but the increase of the H2 content in the primary gas, which can effectively reduce CO2 emissions.
KW - Blast furnace injection
KW - Natural gas
KW - Numerical simulation
KW - Pulverized coal
KW - Raceway
UR - http://www.scopus.com/inward/record.url?scp=85121142020&partnerID=8YFLogxK
U2 - 10.1016/j.fuel.2021.122412
DO - 10.1016/j.fuel.2021.122412
M3 - Article
AN - SCOPUS:85121142020
SN - 0016-2361
VL - 311
JO - Fuel
JF - Fuel
M1 - 122412
ER -