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자료유형
학술대회자료
저자정보
Merisha Hastarina (Gyeongsang National University) Myug-whan Bae (Gyeongsang National University) Jae-ok Bae (Pusan National University)
저널정보
한국자동차공학회 한국자동차공학회 지회 학술대회 논문집 한국자동차공학회 2012 부산·울산·경남지부 추계학술대회
발행연도
2012.11
수록면
111 - 115 (5page)

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Due to the increasing stringency of emissions regulation, the development of highly efficient reduction apparatuses including exhaust gas aftertreatment system has been urgently required. At present, the selective catalytic reduction(SCR) is considered as one of the most promising techniques to decrease NO<SUB>x</SUB> emissions from the combustion system. The aqueous urea solution in SCR system is used as a reducing agent, since it is easy to handle and successfully applied as post-combustion control to reduce NO<SUB>x</SUB> emissions. The catalytic systems of various types have been used to the chemical reaction inside an SCR reactor, including the meta oxide mixtures based on vanadia supported by titania. The efficiency of the vanadium-based catalyst for the SCR of NO with NH<SUB>3</SUB> and its resistance to SO<SUB>2</SUB> poisoning have received much aftention in recent years. The SCR over vanadia-type catalyst has represented the most effective commercial deNO<SUB>x</SUB> technique for the last two decades. In this study, the numerical simulation of NO<SUB>x</SUB> conversion in a urea-SCR reactor with vanadium-based catalystis conducted. The aim of this study is to investigate the characteristics of exhaust gas temperature and NO<SUB>x</SUB> emissions at the backside of SCR reactor, and to understand the complex interactions between the various physical and chemical processes occurred in the system. The results of this modeling are also compared with the ones from the previous study, the experiment and modeling of urea-SCR reactor with zeolite catalyst. From simulation, it is found that the NO<SUB>x</SUB> conversion efficiency in vanadium-based catalystis slightly than the one from seolite catayst.

목차

Abstract
1. INTRODUCTION
2. NUMVERICAL ANALYSES
3. RESULTS AND DISCUSSION
4. CONCLUSIONS
ACKNOWLEDGMENT
References

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UCI(KEPA) : I410-ECN-0101-2014-556-000708701