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Effect of SO2 Concentration on NOx Removal Efficiency in NaOH-Based Wet Scrubbing

NaOH를 이용한 배기가스의 습식 스크러빙에서 SO2 농도에 따른 NOx 제거효율

  • Kang, Myung Soo (Department of Mechanical Engineering, Yonsei University) ;
  • Hwang, Jungho (Department of Mechanical Engineering, Yonsei University)
  • Received : 2018.07.18
  • Accepted : 2018.09.21
  • Published : 2018.10.31

Abstract

$NO_x$ and $SO_2$ are mainly generated in the combustion of fossil fuels, and they cause secondary aerosol formation and acid rain in the atmosphere. Many studies have been conducted on the wet scrubbing process which can simultaneously reduce $NO_x$ and $SO_2$ at relatively low temperature. In this study, we conducted an experimental study on wet scrubbing by using NaOH solution. Especially, this study focuses on $NO_x$ and $SO_2$ removal characteristics by varying $NO_2/NO_x$ ratio and $SO_2$ concentration.

Keywords

References

  1. Chien, T., Chu, H. (2000) Removal of $SO_2$ and NO from flue gas by wet scrubbing using an aqueous $NaClO_2$ solution, Journal of Hazardous Materials, 80(1-3), 43-57. https://doi.org/10.1016/S0304-3894(00)00274-0
  2. Choi, J., Choi, Y., Ahn, J., Park, J., Oh, J., Lee, G., Park, T., Park, G., Jeffery, S.O., Lee, T. (2017) Observation of secondary organic aerosol and new particle formation at a remote site in baengnyeong Island, Korea, Asian Journal of Atmospheric Environment, 11(4), 300-312. https://doi.org/10.5572/ajae.2017.11.4.300
  3. Haiping, X., Lin, D., Gaoyan, H., Xiang, N. (2014) Influence of Gas-Gas Heater on wet flue gas desulfuration, Advanced Materials Research, 92-96.
  4. Hao, R., Yang, S., Zhao, Y., Zhang, Y., Yuan, B., Mao, X. (2017) Follow-up research of ultraviolet catalyzing vaporized $H_2O_2$ for simultaneous removal of $SO_2$ and NO : Absorption of $NO_2$ and NO by Na-based WFGD byproduct ($Na_2SO_3$), Fuel Processing Technology, 160, 64-69. https://doi.org/10.1016/j.fuproc.2017.02.021
  5. Kang, M.S., Hwang, J. (2016) $NO_x$ removal with dielectric barrier discharge and wet absorption, 15th High Pressure Low Temperature Plasma Chemistry Symposium, Czech Republic, Sept 11-16.
  6. Kazanc, F., Khatami, R., Crnkovic, P.M., Levendis, Y.A. (2011) Emission of $NO_x$ and $SO_2$ from coals of various ranks, bagasse, and coal-bagasse blends burning in $O_2$/$N_2$ and $O_2$/$CO_2$ environments, Energy Fuels, 25(7), 2850-2861. https://doi.org/10.1021/ef200413u
  7. Nyashina, G.S., Vershinina, K.Y., Dmitrienko, M.A., Strizhak, P.A. (2018) Environmental benefits and drawbacks of composite fuels based on industrial wastes and different ranks of coal, Journal of Hazardous Materials, 347, 359-370. https://doi.org/10.1016/j.jhazmat.2018.01.014
  8. Obras-Loscertales, M., Diego, L.F., Garcia-Labiano, F., Rufas, A., Abad, A., Gayan, P., Adanez, J. (2014) Sulfur retention in an oxy-fuel bubbling fluidized bed combustor: effect of coal rank, type of sorbent and $O_2$/$CO_2$ ratio, Fuel, 137, 384-392. https://doi.org/10.1016/j.fuel.2014.07.097
  9. Pillai, K.C., Chung, S.J., Raju, T., Moon, I. (2009) Experimental aspects of combined $NO_x$ and $SO_2$ removal from flue-gas mixture in an integrated wet scrubberelectrochemical cell system, Chemosphere, 76(5), 657-664. https://doi.org/10.1016/j.chemosphere.2009.04.013
  10. Sun, B., Sheng, M., Gao, W., Zhang, L., Arowo, M., Liang, Y., Shao, L., Chu, G., Zou, H., Chen, J. (2017) Absorption of nitrogen oxides into sodium hydroxide solution in a rotating packed bed with preoxidation by ozone, Energy Fuels, 31(10), 11019-11025. https://doi.org/10.1021/acs.energyfuels.7b01417
  11. Thomas, D., Vanderschuren, J. (2000) Nitrogen oxides scrubbing with Alkaline Solutions, Chemical Engineering Technology, 23(5), 449-455. https://doi.org/10.1002/(SICI)1521-4125(200005)23:5<449::AID-CEAT449>3.0.CO;2-L
  12. Yamamoto, Y., Ymamoto, H., Takada, D., Kuroki, T., Fujishima, H., Okubo, M. (2016) Simultaneous removal of $NO_x$ and $SO_x$ from flue gas of a glass melting furnace using a combined ozone injection and semi-dry chemical process, Ozone: Science Engineering, 38(3), 211-218. https://doi.org/10.1080/01919512.2015.1115335
  13. Yamamoto, H., Kuroki, T., Fujishima, H., Yamamoto, Y., Yoshida, K., Okubo, M. (2017) Pilot-scale exhaust gas treatment for a glass manufacturing system using a plasma combined semi-dry chemical process, IEEE Transactions on Industry Applications, 53(2), 1416-1423. https://doi.org/10.1109/TIA.2016.2616393
  14. Yoon, H.J., Park, H., Park, D. (2016) Simultaneous oxidation and absorption of $NO_x$ and $SO_2$ in an integrated $O_3$ oxidation/wet atomizing system, Energy Fuels, 30(4), 3289-3297. https://doi.org/10.1021/acs.energyfuels.5b02924
  15. Zhao, Y., Hao, R., Zhang, P., Zhou, S. (2014) Integrative Process for simultaneous removal of $SO_2$ and NO utilizing a vaporized $H_2O_2$/$Na_2S_2O_8$, Energy Fuels, 28(10), 6502-6510. https://doi.org/10.1021/ef501686j
  16. Zhao, Y., Hao, R., Wang, T., Yang, C. (2015) Follow-up research for integrative process of pre-oxidation and postabsorption cleaning flue gas: Absorption of $NO_2$, NO and $SO_2$, Chemical Engineering Journal, 273, 55-65. https://doi.org/10.1016/j.cej.2015.03.053
  17. Zhao, Y., Hao, R., Yuan, B., Jiang, J. (2016) Simultanoues removal of $SO_2$, NO and Hg0 through an integrative process utilizing a cost-effective complex oxidant, Journal of Hazardous Materials, 301, 74-83. https://doi.org/10.1016/j.jhazmat.2015.08.049
  18. Zheng, C., Xu, C., Zhang, Y., Zhang, J., Gao, X., Luo, Z., Cen, K. (2014) Nitrogen oxide absorption and nitrite/nitrate formation in limestone slurry for WFGD system, Applied Energy, 129, 187-194. https://doi.org/10.1016/j.apenergy.2014.05.006