무격막식 해수 전기분해 방식을 통한 배연 탈질에 관한 연구

김태우; 최수진; 김종화; 송주영; Tae-woo Kim; Su-jin Choi; Jong-hwa Kim; Ju-yeong Song

Korean Chemical Engineering Research, Vol.50, No.5, 825-829, October, 2012

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무격막식 해수 전기분해 방식을 통한 배연 탈질에 관한 연구

A Study on the NOx Reduction of Flue Gas Using Un-divided Electrolysis of Seawater

김태우, 최수진, 김종화¹, 송주영^{1, †}

STX종합기술원, 642-854 경남 창원시 성산구 중앙동 93-3
¹창원대학교 화공시스템공학과, 641-773 경상남도 창원시 의창구 사림동

Tae-woo Kim, Su-jin Choi, Jong-hwa Kim¹, and Ju-yeong Song^{1, †}

STX Institute of Technology, 93-3 Jungang-dong, Seongsan-gu, Changwon, Gyeongnam 642-854, Korea
¹Department of Chemical Engineering, Changwon National University, Sarim-dong, Uichang-gu, Changwon, Gyeongnam 641-733, Korea

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초록

본 연구에서는 전기분해 처리된 해수의 유효염소농도와 온도에 의한 배가스 중 NO의 산화 특성을 실험적으로 살펴 보았다. 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 NO2로 산화되는 반응이 촉진됨을 확인하였다. 또한 동일한 유효염소농도를 가지는 전해수의 경우에도 온도가 높을수록 NO 산화율이 증가하였다.

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 NO2 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.

Keywords:De-NOx;Seawater Electrolysis;Flue Gas;Available Chlorine

[References]

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Park HJ, Lee SW, Ku MG, Lim JH, Appl. Chem., 14(1), 37 (2010)
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[1] Park HJ, Lee NW, Choi JW, Lim WS, Korean Chem. Eng. Res., 48(4), 540 (2010)

[2] Mok YS, Kang HC, Lee HW, Nam IS, HWAHAK KONGHAK, 41(2), 256 (2003)

[3] Seo PW, Kim SS, Hong SC, Korean J. Chem. Eng., 27(4), 1220 (2010)

[4] Rajanikanth BS, 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 (2001)

[5] Mok YS, Nam I, IEEE Trans. Plasma Sci., 27(4), 1188 (1999)

[6] Malpartida I, Marie O, Bazin P, Appl. Catal.B: Environ., 113/114, 52 (2012)

[7] Berdnikov VM, Bazhin NM, Russ.J. Phys. Chem., Engl. Transl., 44, 395 (1970)

[8] Zacharia IG, Deen WM, Ann. Biomed. Eng., 33(2), 214 (2005)

[9] http://www.tri-mer.com/pdf-files/nox-control-system.pdf.

[10] An SH, Nishida O, JSME International Journal. Series B, Fluids and Thermal Engineering., 46(1), 206 (2003)

[11] Snoeyink, V. L. and Jenkins, D., Water Chemistry, John Wiley & Sons, 388 (1980)

[12] Park HJ, Lee SW, Ku MG, Lim JH, Appl. Chem., 14(1), 37 (2010)

[13] Park JH, Paik SH, Journal of the Korean Chemical Society., 48(5), 519 (2004)

[14] Ghibaudi E, Barker JR, Benson SW, Int. J. Chem. Kinet., 6, 843 (1979)