DocumentCode :
2204079
Title :
Properties analysis and optimization of primary air volume in power station
Author :
Lu, Xiao ; Wei, Gang ; Yang, Shouwei ; Wang, Chaoyang
Author_Institution :
Inst. of Power Thermal Technol., Hebei Electr. Power Res. Inst., Shijiazhuang, China
fYear :
2011
fDate :
9-11 Sept. 2011
Firstpage :
3848
Lastpage :
3851
Abstract :
In the coal-fired generating units, the primary air that used to dry and carry coal dust had a direct effect on the burning operation mode in boiler furnace. Too large or too small air-coal ratio would affect the formal combustion of coal dust in the boiler. A high primary air flow which could lead to a high wind pressure had an adverse effect on the primary air tube and burner wear. Moreover, when the mill was at low load condition, the high primary air could easily lead to low pulverized coal concentration and thick coal fineness which had an adverse effect on stable combustion; While the lower primary air could easily lead to coal plugging and large amount of pebble coal. Therefore, an appropriate amount of primary air had great significance for the normal operation of the pulverizer and the entire unit. Against the high wind pressure under the low load condition for the mill of the #1 boiler, the test study was carried on to reduce the volume of primary air and make full combustion of the coal dust at more appropriate areas and make a more reasonable heat transfer, Besides, it would reduce the energy consumption and fully realized the objectives of energy-saving potency.
Keywords :
boilers; coal; combustion; optimisation; pulverised fuels; steam power stations; boiler mill; burner wear; burning operation mode; coal dust formal combustion; coal plugging; coal-fired generating unit; energy-saving potency; load condition; low pulverized coal concentration; pebble coal; power station; primary air flow; primary air tube; primary air volume optimization; primary air volume properties analysis; thick coal fineness; wind pressure; Boilers; Coal; Electron tubes; Optimization; Powders; Velocity control; Wind speed; boiler; optimization; primary air; thermal power engineering;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Electronics, Communications and Control (ICECC), 2011 International Conference on
Conference_Location :
Zhejiang
Print_ISBN :
978-1-4577-0320-1
Type :
conf
DOI :
10.1109/ICECC.2011.6068058
Filename :
6068058
Link To Document :
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