The Discharge Status and Technical Analysis of NO_X of Thermal Power Plant Boiler

Abstract:

NO_X is one of the pollutants which will be key governanced by Government in Twelfth Five, and thermal power plant boiler is the main source of NO_X in the atmospheric. Overview of the discharge status of NO_X and the state-controlled status of the power plant NO_X discharge regulations with the latest standards, analysis of the current two thermal power plant NO_X control technology: low-NOx combustion technology and flue gas denitrification technology. Low NOx combustion technology introduces low excess air combustion technology, air staged combustion technology, flue gas recirculation technology, flue gas denitrification technology introduced four methods which is selective catalytic reduction, selective non-catalytic reduction, hybrid SNCR-SCR catalyst reduction combined metgod and wet NO_X absorption system, principle of denitration and their advantages and disadvantages of different methods are discussed. Finally a brief introduction of the difficulties of governance NO_X and some necessary issues when select zhe control methods.

• Periodical: Applied Mechanics and Materials (Volume 535)
• Pages: 131-134
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.535.131
• Online since: February 2014
• Authors: Dong Yang, Qing Wen Chen*
• Keywords: Denitration Technology, Flue Gas Denitration Technology, Low No_x Combustion Technology, Nitrogen Oxides, Thermal Power Plant

References

[1] Chen Xiu-fang, Feng Miao. Technical overview of power plant flue gas [C]. Zeng Xiao-dong, The Fourth Environment and Development China (International) Forum Proceedings. BeiJing: China Environmental Science Press, 2009, 269-272.

[2] Meng Zhi-hao, Yu Bao-yun. Calculation moethod of coal boiler flue gas volume and NOx emissions [J]. Environmental Pollution & Control, 2009，31( 11) : 107 － 109.

[3] Liu Xiang-long, Gong- Fu-hua, Lou Xiao-tie, et al. Principles and techniques of boiler denitration [J]. Journal of Hunan Institute of Engineering, 2006, 16（1）：80-83.

[4] Ma Feng-na, Cheng Wei-qin. Nitrogen oxides emissions of status and control technology in domestic thermal power plant [J]. Guangzhou Chemical Industry, 2011，39(15)：7-59.

[5] Feng Dao-xian. Denitration technology applications in coal-fired power plant boiler [J]. Electric Power Environmental Protection, 2005, 1（2）：23-26.

[6] A. Miller， C. T B. Mechanism and modeling of Nitrogen Chemistry in Combustion. Progress in Energy and Combustion Science, 1989, 15.

[7] Lu Tao, Jia Shuang-yan, Li Xiao-yun. SNCR process and its technical and economic analysis about the flue gas denitrification [J]. Modern Electric Power, 2004，21（1）：17-21.

[8] Cai Xiao-feng, Li Xiao-yun. Technology and application of SNCR-SCR flue gas denitrification [J]. Electric Power Environmental Protection, 2008，24（3）：26-29.