Detailed analysis of early-stage NO formation in turbulent pulverized coal combustion with fuel-bound nitrogen

2020 ◽  
Author(s):  
Xu Wen ◽  
Ali Shamooni ◽  
Oliver T. Stein ◽  
Liming Cai ◽  
Andreas Kronenburg ◽  
...  
Keyword(s):  
Detailed Analysis ◽  
Coal Combustion ◽  
Early Stage ◽  
Pulverized Coal ◽  
Pulverized Coal Combustion ◽  
No Formation

Prediction of unburned carbon and NO formation from low-rank coal during pulverized coal combustion: Experiments and numerical simulation

Fuel ◽  
2016 ◽  
Vol 185 ◽  
pp. 478-490 ◽  
Author(s):  
Kevin Yohanes Lisandy ◽  
Jeong-Woo Kim ◽  
Ho Lim ◽  
Seung-Mo Kim ◽  
Chung-Hwan Jeon
Keyword(s):  
Numerical Simulation ◽  
Coal Combustion ◽  
Pulverized Coal ◽  
Low Rank ◽  
Unburned Carbon ◽  
Pulverized Coal Combustion ◽  
Low Rank Coal ◽  
No Formation

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.

Moment Closure Model for Nitrogen Oxide Formation in Pulverized Coal Combustion Furnaces

1991 ◽  
Vol 113 (2) ◽  
pp. 117-121 ◽  
Author(s):  
D. S. Jang ◽  
S. Acharya
Keyword(s):  
Coal Combustion ◽  
Pulverized Coal ◽  
Moment Closure ◽  
Pulverized Coal Combustion ◽  
Oxide Formation ◽  
Closure Model ◽  
Species Concentration ◽  
Turbulent Fluctuations ◽  
No Formation ◽  
Model Fuel

A moment closure model has been developed to model fuel-bound NO formation in a turbulent pulverized coal flame in a furnace. The effect of turbulence on combustion is accounted for by solving transport equations of fluctuating species correlations arising due to turbulent fluctuations. Correlation between fluctuating species concentration and fluctuating temperature is neglected. The predicted results show reasonable overall agreement with experimental data.

Characterizing early stage sub-micron particle formation during pulverized coal combustion in a flat flame burner

Fuel ◽  
2019 ◽  
Vol 258 ◽  
pp. 115995 ◽  
Author(s):  
Dishant Khatri ◽  
Akshay Gopan ◽  
Zhiwei Yang ◽  
Adewale Adeosun ◽  
Richard L. Axelbaum
Keyword(s):  
Coal Combustion ◽  
Early Stage ◽  
Particle Formation ◽  
Pulverized Coal ◽  
Pulverized Coal Combustion ◽  
Flat Flame ◽  
Micron Particle ◽  
Flame Burner

Carrier-phase DNS of detailed NOx formation in early-stage pulverized coal combustion with fuel-bound nitrogen

Fuel ◽  
2021 ◽  
Vol 291 ◽  
pp. 119998
Author(s):  
Ali Shamooni ◽  
Paulo Debiagi ◽  
Bosen Wang ◽  
Tien Duc Luu ◽  
Oliver T. Stein ◽  
...  
Keyword(s):  
Coal Combustion ◽  
Carrier Phase ◽  
Early Stage ◽  
Pulverized Coal ◽  
Pulverized Coal Combustion ◽  
Nox Formation
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