98/03966 The combustion aerodynamics of a pulverized coal low NOx swirl burner in an industrial boiler

1998 ◽  
Vol 39 (5) ◽  
pp. 371
Keyword(s):  
Pulverized Coal ◽  
Swirl Burner ◽  
Industrial Boiler

Numerical simulations on Oxy-MILD combustion of pulverized coal in an industrial boiler

2018 ◽  
Vol 181 ◽  
pp. 361-374 ◽  
Author(s):  
Diego Perrone ◽  
Teresa Castiglione ◽  
Adam Klimanek ◽  
Pietropaolo Morrone ◽  
Mario Amelio
Keyword(s):  
Numerical Simulations ◽  
Pulverized Coal ◽  
Mild Combustion ◽  
Industrial Boiler

scholarly journals Experimental Investigate on Pre-combustion Characteristic and Flame Shape of an Adjustable Axial Swirl Burner for Pulverized Coal Combustion

2020 ◽  
Author(s):  
Pengzhong Liu ◽  
Fang Niu ◽  
Pengtao Wang ◽  
Nan Jia ◽  
Jianming Zhou ◽  
...  
Keyword(s):  
High Temperature ◽  
Combustion Chamber ◽  
Flame Length ◽  
Pulverized Coal ◽  
Nox Emission ◽  
Maximum Temperature ◽  
Combustion Characteristic ◽  
Swirl Burner ◽  
Co Concentration ◽  
Flame Shape

Abstract The 14 MW pilot–scale pulverized coal experiment system was built, pre-combustion characteristic and flame shape of adjustable axial swirl burner was investigation, and influence of swirl number also was discussed. The temperature and species concentration distribution in pre-combustion chamber showed that a high temperature oxygen-free and high CO concentration zone appeared around central pulverized coal, which enhanced burnout and inhibiting or reduction NOx. The pre-combustion characteristic belonged to high temperature preheating combustion technology. The captured flame image showed that flame shape beyond pre-combustion chamber outlet belonged to turbulent diffusion flame. Then flame shape scales were obtained. For different swirl numbers, ignition, wall temperature, mean maximum temperature, oxygen-free boundary and CO concentration was discussed, the results indicated that S=1.67 had advantaged for burnout and reduction NOx emission on the basis of stable ignition and avoiding high temperature corrosion. Mean flame length and diameter and divergence angle also were analyzed, the results showed that S=1.67 case had moderate flame length and best diameter and divergence. It was favorable for flame stability and high temperature region in furnace part, and increasing burnout and deceasing NOx emission. Therefor the optimal selection was S=1.67 case under experimental condition.

Investigation on ignition behaviors of pulverized coal particles in a tubular swirl burner

2020 ◽  
Author(s):  
Yang Xu ◽  
Christian Axt ◽  
Minhang Song ◽  
Reinhold Kneer ◽  
Shuiqing Li
Keyword(s):  
Pulverized Coal ◽  
Swirl Burner ◽  
Coal Particles
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