Title :
Numerical Investigation On The NO Emissions Of W-shaped Boiler At Different Air Distributions
Author :
Gao, Zhengyang ; Chen, Danfeng ; Du, Wenyao ; Wu, Xiaofang ; Wang, Xingjiu
Author_Institution :
Sch. of Energy & Power Eng., North China Electr. Power Univ., Baoding, China
Abstract :
The air condition is a key factor for NO emission of coal-fired boiler. It is of great importance to study the NO emission characteristics at different air distribution conditions especially at some non-designed air distribution conditions for W flame boiler. The software "CFX-TASCFLOW" was used to simulate the combustions of a 300 MW "W" shape boiler at 18 kinds of air distributions in this work. The accuracy of numerical simulation at the basic condition is certificated by the measurement data. Simulation results show that the ratio of the primary air injected from the front arch to that from the rear arch has great influence on the NO emission when the ratio is less than 5:6 or more than 6:5. The NO emission decreased with increased primary air velocity.
Keywords :
air pollution control; boilers; numerical analysis; steam power stations; CFX-TASCFLOW; W-shaped boiler; air distributions; coal-fired boiler; measurement data; numerical investigation; power 300 MW; Boilers; Combustion; Fires; Fuels; Nitrogen; Numerical models; Numerical simulation; Power engineering and energy; Shape; Temperature;
Conference_Titel :
Power and Energy Engineering Conference (APPEEC), 2010 Asia-Pacific
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-4812-8
Electronic_ISBN :
978-1-4244-4813-5
DOI :
10.1109/APPEEC.2010.5449498
