In the process of coal burning, a large amount of smoke will be produced, and there is a large amount of NOX in the flue gas, only by removing these substances can the pollution degree of the flue gas be reduced. This paper analyzes the coal consumption and NOX emission in China in recent years, and summarizes the industrial emission sources of NOX. The principle, process flow, research status and development prospect of selective catalytic reduction (SCR), selective non-catalytic reduction (SNCR), ozone oxidation and absorption in traditional flue gas denitrification technology and complex absorption and photocatalytic oxidation in new flue gas denitrification technology are discussed in detail. The denitration rate, advantages and disadvantages of the traditional flue gas denitration technology in the denitration market are summarized. The technological characteristics and economy of the above five flue gas denitration technologies were compared, and the development direction of flue gas denitration technology in China was pointed out.
1. Chunhu, Li, Weiwei Y., Shengnan S., Yu, Z., Xin, Y., Siyi, Z., & Liang, W. (2014). Study on the denitrification performance of flue gas using TiO2-rGO/ASC photocatalyst. Journal of Ocean University of China (Natural Science Edition), 44(10). doi: https://doi.org/10.16441/j.cnki.hdxb.2014.10.013
2. He, H., Zhang, Y., & Li, Y. (2021). Recent innovations of silk-derived electrocatalysts for hydrogen evolution reaction, oxygen evolution reaction and oxygen reduction reaction. International Journal of Hydrogen Energy, 46(11), 7848-7865. doi: https://doi.org/10.1360/N032018-00063
3. Jianqiang, Y., Yi, M., & Chi, W. (2017). Current situation and development of wet flue gas denitrification technology. Chemical Industry Progress, 36(2), 695-704. doi: https://doi.org/10.16085/j.issn.1000-6613.2017.02.041
4. Jianhua, D. (2019). Research on NOx reduction and SCR flue gas denitrification technology in thermal power plants. Mechanical and Electrical Information, 20, 31-35. doi: https://doi.org/10.19514/j.cnki.cn32-1628/tm.2019.20.044
5. Jing, Hu. (2017). Effect of absorption spectrum extension on the performance of photocatalytic oxidation of NO. Master's degree thesis. Hangzhou: Zhejiang University. Retrieved from https://kns.cnki.net/KCMS/detail/detail.aspx?dbname=CMFD201701&filename=...
6. Jun, C., Wu J., Wang, J., Zhang, S., & Jianmeng, C. (2018). A mass-transfer model of nitricoxide removal in a rotating drum biofilter coupled with FeII(EDTA) absorption. Industrial & Engineering Chemistry Research, 57:8144-8151. doi: https://doi.org/10.1021/acs.iecr.8b00966
7. Ministry of Ecological and Environmental Protection of the People's Republic of China. (2023). Environmental Statistics Annual Report 2022. Beijing: China Environmental Press. Retrieved from https://www.mee.gov.cn/hjzl/sthjzk/sthjtjnb/202312/t20231229_1060181.shtml
8. National Bureau of Statistics. (2023). People's Republic of China. Chinese Statistical Yearbook. Beijing: China Statistics Press. Retrieved from https://www.stats.gov.cn/sj/ndsj/2023/indexch.htm
9. National Development and Reform Commission of the People's Republic of China. (2024). Action Plan for low-carbon coal power Transformation and Construction (2024-2027). Beijing. Retrieved from https://www.ndrc.gov.cn/xxgk/zcfb/tz/202407/t20240715_1391663.html
10. Shaopeng, G., L., Lv, Jia, Z., Xin, C., Ming T., Wanzhong, K., Yanbo, Z., &Jun, Lu (2015). Simultaneous removal of SO2 and NOX with ammonia combined with gas-phase oxidation of NO using ozone. Chemical Industry & Chemical Engineering Quarterly, 21(2), 305-310. doi: https://doi.org/10.2298/CICEQ140618029G
11. Shuai, Z., Qiang, Y., & Jiawei, Lv. (2018). Research progress of TiO2-based visible light responsive photocatalytic materials. Journal of Donghua University of Technology: Natural Science Edition, 41(1), 94-100.
12. Sun, C, Zhao, N, Wang, H., & Wu, Z. (2015). Simultaneous absorption of NOX and SO2 using magnesia slurry combined with ozone oxidation. Energy & Fuels, 29(5), 3276-3283. doi: https://doi.org/10.1021/acs.energyfuels.5b00229
13. Wang, F. (2015). Experimental study on absorption of NO gas by FeIIEDTA complex method. Taiyuan: North University of China. doi: https://doi.org/10.7666/d.D640515
14. Wu, Y., Peng, X., Liu, J., Kong, Q., Shi, B., & Tong, M. (2002). Study on the integrated membrane processes of dehumidification of compressed air and vapor permeation processes. Journal of Membrane Science, 196(2), 179-183. doi: https://doi.org/10.1016/S0376-7388(01)00564-6
15. Xiaoming, Z., Gan, C., & Chuanxiang, Z. (2018). Progress of oxidative desulfurization and denitrification of coal flue gas. Applied Chemical Industry, 47(2), 375-379. doi: https://doi.org/10.37155/2972-4333-0211-9
16. Ye, Y., Chaoqun, Xu, Yanqun, Zhu, Fawei, L., Qiang, Ma, Zhihua, W., & Kefa, C. (2016). Simultaneous removal of SO2 and NOx by combination of ozone oxidation and Na2S2O3 solution spray. Chinese Journal of Chemical Engineering, 67(5), 2041-2047. doi: https://doi.org/10.11949/j.issn.0438-1157.20151536
17. Yu, Z., Fang, W., & Jiqu, Z. (2017). Characteristics and microbial community analysis of anaerobic reduction process of sulfate and Fe(II)EDTA-NO/Fe(III)EDTA. Environmental Science, 11, 4706-4714. doi: https://doi.org/10.13227/j.hjkx.201704227