Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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A Study on the NOx Reduction of Flue Gas Using Seawater Electrolysis

해수 전기분해를 적용한 배연 탈질 기술에 관한 연구

  • Kim, Tae-Woo (STX Institute of Technology) ;
  • Kim, Jong-Hwa (Dept. of Chemical Engineering, Changwon National University) ;
  • Song, Ju-Yeong (Dept. of Chemical Engineering, Changwon National University)
  • 김태우 (STX종합기술원) ;
  • 김종화 (창원대학교 화공시스템공학과) ;
  • 송주영 (창원대학교 화공시스템공학과)
  • Received : 2012.11.08
  • Accepted : 2012.12.24
  • Published : 2012.12.30
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Abstract

In this study, we investigated the characteristics of NO oxidation using un-divided electrolyzed seawater as oxidant. The concentration of available chlorine and the temperature of electrolyzed seawater are increased with electrolysis time in the closed-loop constant current electrolysis system. While NO gas flow through bubbling reactor which is filled with electrolyzed seawater, the oxidation rate of NO to $NO_2$ is increased with the concentration of available chlorine and the temperature. $NO_2$, generated by oxidation reaction, is dissolved in electrolyzed seawater and existed as $HNO_3{^-}$ ion.

본 연구에서는 무격막식 전기분해 처리된 해수를 산화제로하는 NO 산화반응의 특성에 대해 실험적으로 살펴보았다. 폐순환 정전류 전기분해 시스템을 통해전해 시간이 길어질수록 전해수의 유효 염소농도와 온도, 염소산 이온의 비율이 증가함을 확인하였다. 전해수가 채워진 버블링 반응기에서 전해수의 유효염소농도와 온도에 비례하여 $NO_2$로 산화되는 NO의 양이 증가하였다. 또한 산화되어 생성된 $NO_2$는 전해수에 용해되어 $HNO_3{^-}$ 이온으로 존재함을 확인하였다.

Keywords

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