Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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A Study on the NOx Reduction of Flue Gas Using Un-divided Electrolysis of Seawater

무격막식 해수 전기분해 방식을 통한 배연 탈질에 관한 연구

  • Received : 2012.05.09
  • Accepted : 2012.06.12
  • Published : 2012.10.01
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Abstract

In this study, we investigated NO oxidation characteristic that depends on available chlorine concentration and temperature of seawater which is treated by un-divided electrolysis. Reactant gas passed through bubbling reactors which is filled with electrolyzed water and then NO concentration change was analyzed. In the closed-loop electrolysis system, concentration of available chlorine increased with electrolysis time. The higher oxidation rate of NO to $NO_2$ was obtained with the higher concentration of available chlorine. Oxidation of NO was fast when temperature of electrolyzed water was high, in the case of same concentration of available chlorine.

본 연구에서는 전기분해 처리된 해수의 유효염소농도와 온도에 의한 배가스 중 NO의 산화 특성을 실험적으로 살펴보았다. 실험은 무격막식 전해수가 채워진 버블링 반응기에 반응가스를 공급하여 NO 농도의 변화를 분석하였다. 폐순환 전기분해 시스템의 경우 정전류 조건에서 전해 시간이 길어질수록 전해수 내에 유효염소농도가 상승하였고, 전해수의 유효염소농도가 높을수록 NO가 $NO_2$로 산화되는 반응이 촉진됨을 확인하였다. 또한 동일한 유효염소농도를 가지는 전해수의 경우에도 온도가 높을수록 NO 산화율이 증가하였다.

Keywords

References

  1. Park, H. J., Lee, N. W., Choi, J. W. and Lim, W. S., "A Study on Removal of NOx by Low Temperature Plasma," Korean Chem. Eng. Res.(HWAHAK KONGHAK), 48(4), 540-543(2010).
  2. Mok, Y. S., Kang, H. C., Lee, H. W. and Nam, I. S., "Effect of Plasma Discharge on Selective Catalytic Reduction of Nitrogen Oxides," Korean Chem. Eng. Res.(HWAHAK KONGHAK), 41(2), 256-263(2003).
  3. Seo, P. W., Kim, S. S. and Hong, S. C., "A Study of the Increase in Selective Catalytic Reduction (SCR) Activity of the V/$TiO_{2}$ Catalyst Due to the Addition of Monoethanolamine (MEA)," Korean J. Chem. Eng., 27(4), 1220-1225(2010) https://doi.org/10.1007/s11814-010-0215-6
  4. Rajanikanth, B. S. and Ravi, V., "Removal of NOx from Diesel Engine Exhaust Using Pulsed Electric Discharge Coupled with a Catalytic Reactor," 12th Int. Symp. High Voltage Eng., Bangalore, India, 1283-1286(2001).
  5. Mok, Y. S. and Nam, I., "Positive Pulsed Corona Discharge Process for Simultaneous Removal of $SO_{2}$ and NOx from Iron-Ore Sintering Flue Gas," IEEE Trans. Plasma Sci., 27(4), 1188-1196 (1999). https://doi.org/10.1109/27.782299
  6. Malpartida, I., Marie, O. and Bazin, P., "The NO/NOx Ratio Effect on the $NH_{3}$-SCR Efficiency of a Commercial Automotive Fe-zeolite Catalyst Studied by Operando IR-MS," Appl. Catal. B: Environ., 113/114, 52-60(2012). https://doi.org/10.1016/j.apcatb.2011.11.023
  7. Berdnikov, V. M. and Bazhin, N. M., "Oxidation-reduction Potentials of Certain Inorganic Radicals in Aqueous Solutions," Russ. J. Phys. Chem., Engl. Transl., 44, 395-398(1970).
  8. Zacharia, I. G. and Deen, W. M., "Diffusivity and Solubility of Nitric Oxide in Water and Saline," Ann. Biomed. Eng., 33(2), 214-222(2005). https://doi.org/10.1007/s10439-005-8980-9
  9. http://www.tri-mer.com/pdf-files/nox-control-system.pdf.
  10. An, S. H. and Nishida, O., "New Application of Seawater and Electrolyzed Seawater in Air Pollution Control of Marine Diesel Engine," JSME International Journal. Series B, Fluids and Thermal Engineering, 46(1), 206-213(2003). https://doi.org/10.1299/jsmeb.46.206
  11. Snoeyink, V. L. and Jenkins, D., Water Chemistry, John Wiley & Sons, 388-393(1980).
  12. Park, H. J., Lee, S. W., Ku M. G. and Lim, J. H., "Electrochemical Treatment of Dye Wastewater Using $IrO_{2}$/Ti Electrode," Appl. Chem., 14(1), 37-40(2010).
  13. Park, J. H. and Paik, S. H., "The Problems of Chemistry Teachers' and Pre-service Teachers' Conceptions in the Prediction of Electrolysis Products," Journal of the Korean Chemical Society, 48(5), 519-526(2004). https://doi.org/10.5012/jkcs.2004.48.5.519
  14. Ghibaudi, E., Barker, J. R. and Benson, S. W., "Reaction of NO with Hypochlorous Acid," Int. J. Chem. Kinet., 6, 843-851(1979).

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