Effect of the Air Temperature on Combustion Characteristics and NOx Emissions from a 0.5 MW Pulverized Coal-Fired Furnace with Deep Air Staging

2012 ◽  
Vol 26 (4) ◽  
pp. 2068-2074 ◽  
Author(s):  
Zhengqi Li ◽  
Yong Liu ◽  
Zhichao Chen ◽  
Qunyi Zhu ◽  
Jinzhao Jia ◽  
...  
Keyword(s):  
Air Temperature ◽  
Combustion Characteristics ◽  
Pulverized Coal ◽  
Nox Emissions ◽  
Air Staging

Moderate or Intense Low-Oxygen Dilution Oxy-combustion Characteristics of Light Oil and Pulverized Coal in a Pilot-Scale Furnace

2014 ◽  
Vol 28 (2) ◽  
pp. 1524-1535 ◽  
Author(s):  
P. Li ◽  
F. Wang ◽  
Y. Tu ◽  
Z. Mei ◽  
J. Zhang ◽  
...  
Keyword(s):  
Pilot Scale ◽  
Combustion Characteristics ◽  
Pulverized Coal ◽  
Low Oxygen ◽  
Light Oil

Effects of Air Temperature on Combustion Characteristics of LPG Diffusion Flame

2020 ◽  
Vol 1008 ◽  
pp. 128-138
Author(s):  
Ahmed M. Salman ◽  
Ibrahim A. Ibrahim ◽  
Hamada M. Gad ◽  
Tharwat M. Farag
Keyword(s):  
Air Temperature ◽  
Diffusion Flame ◽  
Nitrogen Addition ◽  
Flame Length ◽  
Combustion Characteristics ◽  
Operating Conditions ◽  
Low Oxygen ◽  
Air Temperatures ◽  
Air Stream ◽  
Wide Range

In the present study, the combustion characteristics of LPG gaseous fuel diffusion flame at elevated air temperatures were experimentally investigated. An experimental test rig was manufactured to examine a wide range of operating conditions. The investigated parameters are the air temperatures of 300, 350, 400, 450, and 500 K with constant percentage of nitrogen addition in combustion air stream of 5 % to give low oxygen concentration of 18.3 % by mass at constant air swirl number, air to fuel mass ratio, and thermal load of 1.5, 30, and 23 kW, respectively. The gaseous combustion characteristics were represented as axial and radial temperatures distributions, temperatures gradient, visible flame length and species concentrations. The results indicated that as the air temperature increased, the chemical reaction rate increased and flame volume decreased, the combustion time reduced leading to a reduction in flame length. The NO concentration reaches its maximum values near the location of the maximum centerline axial temperature. Increasing the combustion air temperature by 200 K, the NO consequently O2 concentrations are increased by about % 355 and 20 % respectively, while CO2 and CO concentrations are decreased by about % 21 and 99 % respectively, at the combustor end.

Co-firing sludge in a pulverized coal-fired utility boiler: Combustion characteristics and economic impacts

Energy ◽  
2017 ◽  
Vol 119 ◽  
pp. 392-399 ◽  
Author(s):  
Peng Tan ◽  
Lun Ma ◽  
Ji Xia ◽  
Qingyan Fang ◽  
Cheng Zhang ◽  
...  
Keyword(s):  
Economic Impacts ◽  
Combustion Characteristics ◽  
Pulverized Coal ◽  
Utility Boiler

Pulverized coal combustion characteristics of high-fuel-ratio coals

Fuel ◽  
2004 ◽  
Vol 83 (13) ◽  
pp. 1777-1785 ◽  
Author(s):  
Ryoichi Kurose ◽  
Michitaka Ikeda ◽  
Hisao Makino ◽  
Masayoshi Kimoto ◽  
Tetsuo Miyazaki
Keyword(s):  
Coal Combustion ◽  
Combustion Characteristics ◽  
Pulverized Coal ◽  
Pulverized Coal Combustion ◽  
Fuel Ratio
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