Browse > Article

Numerical Modeling of Vanadia-based Commercial Urea-SCR plus DOC Systems for Heavy-duty Diesel Exhaust Aftertreatment Systems  

Yun, Byoung-Kyu (Department of Aerospace Engineering, Chonbuk National University)
Kim, Chong-Min (Department of Aerospace Engineering, Chonbuk National University)
Kim, Man-Young (Department of Aerospace Engineering, Chonbuk National University)
Cho, Gyu-Baek (Engine Research Team, Korea Institute of Machinery Materials)
Kim, Hong-Suk (Engine Research Team, Korea Institute of Machinery Materials)
Jeong, Young-Il (Engine Research Team, Korea Institute of Machinery Materials)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.18, no.2, 2010 , pp. 24-30 More about this Journal
Abstract
In this study, numerical experiments were carried out to estimate the SCR De-NOx performance in DOC plus SCR systems. The SCR De-NOx phenomena are described by Langmuir-Hinshelwood reaction scheme. After validating the present approach by comparing the present results with the experimental results, such various parameters as space velocity, $H_2O$ concentration, $NO_2$/NOx ratio and relative volume of DOC are explored to increase the SCR De-NOx performance. The results indicate that SCR De-NOx performance largely depends on space velocity and $NO_2$/NOx ratio, especially below $200^{\circ}C$. SCR De-NOx performance is seriously affected by relative volume of DOC with SCR due to increasing in $NO_2$/NOx ratio at below $250^{\circ}C$.
Keywords
SCR(Selective Catalytic Reduction); DOC(Diesel Oxidation Catalyst); NOx(Nitrogen Oxides); SCR De-NOx(NOx Reduction of SCR); Vanadium;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
1 S. Jung and W. Yoon, "The Effect of an Oxidation Precatalyst on the NOx Reduction by $NH_3$-SCR Process in Diesel Exhaust," Transactions of KSAE, Vol.16, No.5, pp.68-76, 2008.
2 Diesel NOx Reduction and Effects of $NO_2$/ NOx, $NH_3$/NO Ratio on the De-NOx Efficiency," Transactions of KSAE, Vol.16, No.3, pp.179-187, 2008.   과학기술학회마을
3 D. Tsinoglou and G. Koltsakis, "Modelling of the Selective Catalytic NOx Reduction in Diesel Exhaust including Ammonia Strage," Proc. IMechE Part D: J. Automobile. Engineering, Vol.221, pp.117-133, 2007.
4 D. Chatterjee, T. Burkhardt, T. Rappe, A. Guthenke and M. Weibel, "Numerical Simulation of DOC+DPF+SCR Systems: DOC Influence on SCR Performance," SAE 2008-01-0867, 2008.
5 J. Gieshoff, A. Schafer-Sindlinger, P. C. Spurk, J. A. A van den Tillaart and G. Garr, "Improved SCR Systems for Heavy Duty Applications," SAE 2000-01-0189, 2000.
6 G. Madia, M. Manfred, M. Elsener and A. Wokaun, "The Effect os an Oxidation Precatalyst on the NOx Reduction by Ammonia SCR," Ind. Eng. Chem. Res., Vol.41, No.15, pp.3512- 3517, 2002.   DOI   ScienceOn
7 S. Salomons, M. Votsmeier, R. E. Hayes, A. Drochner, H. Vogel and J. Geishof, "CO and $H_2$ Oxidation on Platinum Monolith Diesel Oxidation Catalyst," Catalysis Today, Vol.117, pp.491-497, 2006.   DOI   ScienceOn
8 Y. Tanaka, T. Hihara, M. Nagata, N. Azuma and A. Ueno, "Modeling of Diesel Oxidation Catalyst," Ing. Eng. Chem. Res. Vol.44, pp.8205- 8212, 2005.   DOI   ScienceOn
9 Boost Aftertreatments, AVL, 2006.
10 A. P. Triana, J. H. Johnson, S. L. Yang and K. J. Baumgard, "An Experimental and Numerical Study of the Performance Characteristics of the Diesel Oxidation Catalyst in a Continuously Regenerating Particulate Filter," SAE 2003-01- 3176, 2003.
11 L. Lietti, I. Nova, S. Camurri, E. Tronconi and P. Forzatti, "Dynamics of the SCR-DeNOx Reduction by the Transient-Response Method," AIChE Journal, Vol.43, pp.2559-2570, 1997.   DOI   ScienceOn
12 C. Winkler, P. Florchinger, M. D. Patil, J. Gieshoff, P. Spurk and M. Pfeifer, "Modeling of SCR DeNOx Catalyst - Looking at the Impact of Substrate Attributes," SAE 2003-01- 0845, 2003.
13 M. Y. Kim, "Performance Prediction of SCRDeNOx System for Reduction of Diesel Engine NOx Emission," Transactions of KSAE, Vol.11, No.3, pp.71-76, 2003.   과학기술학회마을