Numerical investigation of air-staged combustion emphasizing char gasification and gas temperature deviation in a large-scale, tangentially fired pulverized-coal boiler

2016 ◽  
Vol 177 ◽  
pp. 323-334 ◽  
Author(s):  
Yacheng Liu ◽  
Weidong Fan ◽  
Yu Li
Keyword(s):  
Numerical Investigation ◽  
Large Scale ◽  
Pulverized Coal ◽  
Gas Temperature ◽  
Staged Combustion ◽  
Temperature Deviation ◽  
Char Gasification ◽  
Pulverized Coal Boiler ◽  
Coal Boiler

Local Furnace Data and Modeling Comparison for a 600MWe Coal-Fired Utility Boiler

1999 ◽  
Author(s):  
Yuh-Long Hwang ◽  
John R. Howell
Keyword(s):  
Large Scale ◽  
Constant Load ◽  
Airflow Rate ◽  
Experimental Facility ◽  
Gas Temperature ◽  
Furnace Design ◽  
Brigham Young University ◽  
Operating Variables ◽  
Pulverized Coal Boiler ◽  
Coal Boiler

Abstract Reductions in Furnace Exit Gas Temperature (FEGT) by changing boiler operating variables and/or adding wall soot blowers and/or lowering burner elevations are investigated. Evaluation of these approaches requires experimental furnace testing and computational furnace modeling. The experimental facility is a Combustion Engineering corner-fired pulverized-coal boiler with a capacity of 606 MWe. Local gas temperature distributions, local radiative and total wall heat flux distributions, and stack NOx were measured during constant-load furnace tests under various combinations of burner configuration, burner tilt angles, excess-O2 setpoints and overfire airflow rate. These measurements are used for tuning and calibrating a furnace model based on the PCGC-3 code developed by Brigham Young University. The experimental data gathered in this work comprises a comprehensive set under controlled conditions on a very-large-scale coal-fired plant, and provides information for use in comparing the predictions of furnace-design codes.

Local Furnace Data and Modeling Comparison for a 600-MWe Coal-Fired Utility Boiler

2002 ◽  
Vol 124 (1) ◽  
pp. 56-66 ◽  
Author(s):  
Yuh-Long Hwang ◽  
John R. Howell
Keyword(s):  
Large Scale ◽  
Constant Load ◽  
Airflow Rate ◽  
Experimental Facility ◽  
Gas Temperature ◽  
Furnace Design ◽  
Brigham Young University ◽  
Operating Variables ◽  
Pulverized Coal Boiler ◽  
Coal Boiler

Reductions in furnace exit gas temperature (FEGT) by changing boiler operating variables and/or adding wall soot blowers and/or lowering burner elevations are investigated. Evaluation of these approaches requires experimental furnace testing and computational furnace modeling. The experimental facility is a Combustion Engineering corner-fired pulverized-coal boiler with a capacity of 606 MWe. Local gas temperature distributions, local radiative and total wall heat flux distributions, and stack NOx were measured during constant-load furnace tests under various combinations of burner configuration, burner tilt angles, excess-O2 setpoints and overfire airflow rate. These measurements are used for tuning and calibrating a furnace model based on the PCGC-3 code developed by Brigham Young University. The experimental data gathered in this work comprise a comprehensive set under controlled conditions on a very-large-scale coal-fired plant and provides information for use in comparing the predictions of furnace-design codes.

CFD modeling and thermodynamic analysis of a concept of a MILD-OXY combustion large scale pulverized coal boiler

Energy ◽  
2017 ◽  
Vol 140 ◽  
pp. 1305-1315 ◽  
Author(s):  
Wojciech P. Adamczyk ◽  
Ryszard A. Bialecki ◽  
Mario Ditaranto ◽  
Pawel Gladysz ◽  
Nils Erland L. Haugen ◽  
...  
Keyword(s):  
Thermodynamic Analysis ◽  
Large Scale ◽  
Pulverized Coal ◽  
Cfd Modeling ◽  
Pulverized Coal Boiler ◽  
Coal Boiler
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