Numerical Simulation of the NOxEmissions in a 1000 MW Tangentially Fired Pulverized-Coal Boiler: Influence of the Multi-group Arrangement of the Separated over Fire Air

2011 ◽  
Vol 25 (5) ◽  
pp. 2004-2012 ◽  
Author(s):  
Hao Zhou ◽  
Guiyuan Mo ◽  
Dongbo Si ◽  
Kefa Cen
Keyword(s):  
Numerical Simulation ◽  
Pulverized Coal ◽  
Pulverized Coal Boiler ◽  
Coal Boiler

Numerical Simulation of O2/CO2 Pulverized Coal in 300MW Boiler

2013 ◽  
Vol 732-733 ◽  
pp. 133-137
Author(s):  
Li Li Li ◽  
Chao Qu
Keyword(s):  
Numerical Simulation ◽  
Flue Gas ◽  
Volume Fraction ◽  
Simulation Software ◽  
Pulverized Coal ◽  
Central Position ◽  
Pulverized Coal Boiler ◽  
Combustion Technology ◽  
Secondary Air ◽  
Coal Boiler

O2/CO2combustion technology is an effective method to capture and store coal-fired boiler flue gas CO2. With a 300MW subcritical pulverized coal boiler as the research subject investigated, Fluent numerical simulation software is used to simulate the process of pulverized coal combustion both in air and O2/CO2conditions. The comparative analyses are made both in the former conditions, such as the combustion characteristics of pulverized coal, the influence of oxygen volume fraction, the effect of the secondary air temperature on the temperature field in the furnace of pulverized coal boiler. As for the following results of the pulverized coal combusted in the O2/CO2condition, compared with the results in the air condition, its time of ignition is delayed, and the combustion temperature is low and the central position of flame rises. With the increasing percentage of the oxygen volume and the rising temperature of secondary air, the time of ignition speeds up, which improves the overall furnace temperature level and transferring capability of the radiation heat.

Field measurements on the generation and emission characteristics of PM2.5 generated by utility pulverized coal boiler

2018 ◽  
Vol 91 (6) ◽  
pp. 1009-1020 ◽  
Author(s):  
Qian Du ◽  
Heming Dong ◽  
Donghui Lv ◽  
Lipeng Su ◽  
Jianmin Gao ◽  
...  
Keyword(s):  
Field Measurements ◽  
Pulverized Coal ◽  
Emission Characteristics ◽  
Pulverized Coal Boiler ◽  
Coal Boiler

Heat Exchange Calculation of a Regenerative Air Heater with Numerical Simulation Method

2013 ◽  
Vol 860-863 ◽  
pp. 1416-1419
Author(s):  
Ri Guang Wei ◽  
Zhen Xiao Qu ◽  
Jian Qiang Gao
Keyword(s):  
Numerical Simulation ◽  
Simulation Method ◽  
Calculation Model ◽  
Design Parameters ◽  
Practical Calculation ◽  
Air Preheater ◽  
Air Heater ◽  
Pulverized Coal Boiler ◽  
Set Up ◽  
Coal Boiler

According to the structure and working principle of rotary air preheater,the heat transfer calculation model is set up with reasonable simplification. Combining with the design parameters of the rotary air preheater of a 400 t/h pulverized coal boiler unit ,the results of practical calculation show that the said thermodynamic calculation method not only has higher precision of calculation,but also can get the temperature distributions of the gas, air and heat surface in each cross-section of the rotary air preheater. The result of numerical simulation calculation tallies well with the original designed data. It can be used for the heat calculation both two-sectorial and three-sectorial air heater; it can be used for performance analysis of the regenerative air heater.

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