Characteristics of Pulverized Coal Combustion in High-Temperature Preheated Air

2000 ◽  
Vol 16 (4) ◽  
pp. 601-605 ◽  
Author(s):  
Takashi Kiga ◽  
Kunio Yoshikawa ◽  
Masaru Sakai ◽  
Susumu Mochida
Keyword(s):  
High Temperature ◽  
Coal Combustion ◽  
Pulverized Coal ◽  
Pulverized Coal Combustion

scholarly journals Performance of Pulverized Coal Combustion under High Temperature Air Diluted by Steam

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Mohsen Saffari Pour ◽  
Yang Weihong
Keyword(s):  
High Temperature ◽  
Coal Combustion ◽  
Fluid Dynamic ◽  
Flame Temperature ◽  
Experimental Tests ◽  
Injection Rate ◽  
Pulverized Coal ◽  
Injection Velocity ◽  
Pulverized Coal Combustion ◽  
Injection Speed

The high temperature air combustion (HiTAC) is an advanced promising technology for heat recovery, energy saving, and stability improvement of flame. Computational fluid dynamic (CFD) is known as an applied tool to execute HiTAC modeling. In this paper, performances of pulverized coal combustion under the high preheated and oxygen deficient air are studied by both experimental and numerical methodology. The experimental facilities have been accomplished in a HiTAC chamber with coal injection velocity that ranges from 10 to 40 m/s. In order to achieve different preheated temperatures, the combustion air in such system is diluted by variable steam percentages from 0 to 44%. Results of mathematical simulation and experimental tests present convincible agreement through whole region. It is concluded that NOX emission is reduced by increasing the steam percentage in the oxidizer due to decreasing the flame temperature. Besides, graphical contours show that by adding more steam to oxidizer composition, the oxygen concentration decreased. Additionally, results show that when the injection speed of fuel is increased, NOX emission is also increased, and when the injection rate of preheated air is increased, NOX emission shows decreasing trend. Further contribution in future is needed to investigate the performance of such technologies.

Pulverized coal combustion and NOx emissions in high temperature air from circulating fluidized bed

2008 ◽  
Vol 89 (11) ◽  
pp. 1186-1192 ◽  
Author(s):  
Qinggang Lu ◽  
Jianguo Zhu ◽  
Tianyu Niu ◽  
Guoliang Song ◽  
Yongjie Na
Keyword(s):  
High Temperature ◽  
Fluidized Bed ◽  
Coal Combustion ◽  
Circulating Fluidized Bed ◽  
Pulverized Coal ◽  
Nox Emissions ◽  
Pulverized Coal Combustion

scholarly journals N2O Formation/Destruction Characteristics and Mechanisms in High-Temperature Pulverized Coal Combustion.

1993 ◽  
Vol 59 (564) ◽  
pp. 2560-2567 ◽  
Author(s):  
Yasuyuki Yamamoto ◽  
Yoshifumi Ito ◽  
Jian-Wei Yuan ◽  
Ichiro Naruse ◽  
Kazutomo Ohtake
Keyword(s):  
High Temperature ◽  
Coal Combustion ◽  
Pulverized Coal ◽  
Pulverized Coal Combustion ◽  
N2o Formation
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