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http://dx.doi.org/10.5916/jkosme.2012.36.6.814

Effect of Mixer Structure on Turbulence and Mixing with Urea-water Solution in Marine SCR System  

Kim, Tae-Kyoung (부산대학교 기계공학부 대학원)
Sung, Yon-Mo (부산대학교 기계공학부 대학원)
Han, Seung-Han ((주)현대비엔지스틸)
Ha, Sang-Jun ((주)동신)
Choi, Gyung-Min (부산대학교 기계공학부)
Kim, Duck-Jool (부산대학교 기계공학부 기계기술연구원)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.36, no.6, 2012 , pp. 814-822 More about this Journal
Abstract
To improve the flow and mixing characteristics of marine SCR system, two different mixer including up-down and swirl type mixer were considered. The purpose of this study is to analyse turbulence intensity and uniformity index in detail and to improve the performance of SCR with respect to the mixer structure. The results showed that, the concentration uniformity index is improved by about 5% with the utilization of both mixers in the front of catalyst part. Although the RMS value and relative turbulence intensity increased after the up-down type mixer, it could observed that the value of two parameters decreased with the flow proceeding forward to the downstream. For the case of swirl type mixer, the decrease of RMS value and relative turbulence intensity were relatively smaller than that of up-down type mixer, and uniform distribution of relative turbulence intensity was observed. As a results, it could be concluded that the mixing effects and the distance of the two kinds of mixer were different.
Keywords
Selective Catalytic Reduction(SCR); Mixer; Relative Turbulence Intensity; Uniformity Index;
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Times Cited By KSCI : 2  (Citation Analysis)
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