Experimental Study on Particle Temperature and CO/CO2Emission Characteristics of Pulverized Coal Combustion Condition According to Coal Types in Blast Furnace

2014 ◽  
Vol 38 (10) ◽  
pp. 807-815 ◽  
Author(s):  
Young Jae Cho ◽  
Jin Ho Kim ◽  
Ryang Gyun Kim ◽  
Gyu Bo Kim ◽  
Chung Hwan Jeon
Keyword(s):  
Experimental Study ◽  
Blast Furnace ◽  
Coal Combustion ◽  
Particle Temperature ◽  
Pulverized Coal ◽  
Pulverized Coal Combustion ◽  
Combustion Condition

scholarly journals Effect of CO2 injection into blast furnace tuyeres on the pulverized coal combustion

2021 ◽  
Vol 40 (1) ◽  
pp. 131-140
Author(s):  
Juanjuan Jiang ◽  
Rong Zhu ◽  
Shengtao Qiu
Keyword(s):  
Blast Furnace ◽  
Coal Combustion ◽  
Early Stage ◽  
Three Dimensional ◽  
Metallurgical Industry ◽  
Pulverized Coal ◽  
Co2 Injection ◽  
Endothermic Effect ◽  
Outlet Temperature ◽  
Pulverized Coal Combustion

Abstract CO2 injection into blast furnace tuyeres is a new technology to utilize CO2, aiming at expanding the way of CO2 self-absorption in the metallurgical industry. The decisive factor of whether CO2 can be mixed into a blast-furnace hot blast and the proper mixing ratio is the effect of CO2 injection on pulverized coal burnout. To investigate the effect of CO2 injection into tuyeres on pulverized coal burnout, a three-dimensional mathematical model of pulverized coal flow and combustion in the lower part of the pulverized coal injection lance-blowpipe-tuyere-raceway was established, and the effect of CO2 injection into tuyeres on pulverized coal combustion rate and outlet temperature is analyzed. The numerical simulation results show that the delay of pulverized coal combustion in the early stage is caused by the endothermic effect of the reaction of CO2 with carbon, and the burnout of pulverized coal is increased in the later stage due to the oxidation of CO2.

Experimental study on NOx emissions of pulverized coal combustion preheated by a 2 MW novel self-sustained preheating combustor

Fuel ◽  
2021 ◽  
Vol 294 ◽  
pp. 120538
Author(s):  
Ziqu Ouyang ◽  
Wenhao Song ◽  
Jingzhang Liu ◽  
Jianguo Zhu ◽  
Chengbo Man ◽  
...  
Keyword(s):  
Experimental Study ◽  
Coal Combustion ◽  
Pulverized Coal ◽  
Nox Emissions ◽  
Pulverized Coal Combustion
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