DocumentCode
2106572
Title
Notice of Retraction
Numerical Study of Pulverized Coal Ignition Characteristics under O2/CO2 Atmosphere
Author
Le Wu ; Minghou Xu ; Yu Qiao ; Xiaowei Liu ; Hong Yao
Author_Institution
State Key Lab. of Coal Combustion, Huazhong Univ. of Sci. & Technol., Wuhan, China
fYear
2010
fDate
28-31 March 2010
Firstpage
1
Lastpage
5
Abstract
Notice of Retraction
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
O2/CO2 combustion of pulverized coal is one of the promising new technologies in order to reduce the emission of CO2 and NOx from coal combustion furnaces. In this paper, an unsteady-state model of pulverized coal cloud consider the radiation and convection was used, by numerical simulation, a typical bituminous coal ignition characteristics was studied in air and O2/CO2 atmosphere and also carried out experiment study, experiment results are in good agreement with the calculated results. Results shows that when the atmosphere changed from air to O2/CO2, ignition delay time and ignition temperature both increased, the range of temperature increase is about 10-20 K.With the increase of coal concentration the ignition delay time and ignition temperature reduced under O2/CO2 atmosphere, the ignition delay time is reduced when the ambient temperature is increased, and the ambient temperature has a greater impact on ignition delay time under O2/CO2 atmosphere, leading a longer ignition delay time.
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
O2/CO2 combustion of pulverized coal is one of the promising new technologies in order to reduce the emission of CO2 and NOx from coal combustion furnaces. In this paper, an unsteady-state model of pulverized coal cloud consider the radiation and convection was used, by numerical simulation, a typical bituminous coal ignition characteristics was studied in air and O2/CO2 atmosphere and also carried out experiment study, experiment results are in good agreement with the calculated results. Results shows that when the atmosphere changed from air to O2/CO2, ignition delay time and ignition temperature both increased, the range of temperature increase is about 10-20 K.With the increase of coal concentration the ignition delay time and ignition temperature reduced under O2/CO2 atmosphere, the ignition delay time is reduced when the ambient temperature is increased, and the ambient temperature has a greater impact on ignition delay time under O2/CO2 atmosphere, leading a longer ignition delay time.
Keywords
air pollution control; carbon compounds; climate mitigation; coal; combustion; convection; ignition; numerical analysis; oxygen; pulverised fuels; CO2 combustion; O2-CO2 atmosphere; bituminous coal ignition characteristic; coal concentration; convection; ignition delay time; ignition temperature; numerical simulation; pulverized coal ignition; radiation; unsteady-state model; Atmosphere; Atmospheric modeling; Clouds; Combustion; Delay effects; Furnaces; Global warming; Ignition; Numerical simulation; Temperature distribution;
fLanguage
English
Publisher
ieee
Conference_Titel
Power and Energy Engineering Conference (APPEEC), 2010 Asia-Pacific
Conference_Location
Chengdu
Print_ISBN
978-1-4244-4812-8
Type
conf
DOI
10.1109/APPEEC.2010.5448963
Filename
5448963
Link To Document