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Effects of Various Model Parameters in the Simulation of a Diesel SCR System
Technical Paper
2012-01-1297
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A Selective Catalytic Reduction (SCR) system is a simple solution to mitigate high concentration of nitrogen oxides from tail pipe emissions using ammonia as catalyst. In recent years, implementation of stringent emission standards for diesel exhaust made the SCR system even more lucrative aftertreatment solution for diesel engine manufacturer due to its well established reaction mechanism and lower initial cost involved compared to other available options. Nitrogen oxides reduction efficiency and ammonia slip are two main parameters that affects SCR system performance. Therefore, primary design objective of an efficient SCR system is to enhance reduction of nitrogen oxides and control ammonia slip. Both these factors can be improved by having a uniform mixture of ammonia at the SCR inlet. In this mathematical simulation, various parameters that affect accuracy in predicting the uniformity of mixture at the SCR inlet have been documented. The uncertainties involved with these modeling and input parameters are discussed and a number of possible methods to ascertain their values in the mathematical models have been suggested.
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Das, S., Das, K., Abidin, Z., and Mehta, D., "Effects of Various Model Parameters in the Simulation of a Diesel SCR System," SAE Technical Paper 2012-01-1297, 2012, https://doi.org/10.4271/2012-01-1297.Also In
References
- Brouwer, J. Heap, M. P. Heap. Pershing, D. W. Smith, P. J. A Model for prediction of Selective Non-Catalytic Reduction of Nitrogen Oxides by Ammonia, Urea, and Cyanuric acid with Mixing Limitations in the Presence of CO. Twenty Sixth International Symposium on Combustion July 1996 Naples, Italy
- Bhattacharjee, S. Haworth, D. Moores, R. “CFD Modeling of Processes Upstream of the Catalyst for Urea SCR NOx Reduction Systems in Heavy-Duty Diesel Applications,” SAE Technical Paper 2011-01-1322 2011 10.4271/2011-01-1322
- Birkhold, F. Meingast, U. Wassermann, P. Deutschmann, O. “Modeling and Simulation of the Injection of Urea-Water-Solution for Automotive SCR DeNOx-Systems,” Appl. Catal. B-Environ. 70 119 127 2007
- Rota, R. Antos, D. Zanoelo, E. Morbidelli, M. “Experimental and modeling analysis of the NOx OUT process” Chemical Engineering Science 57 2002 27 38
- Rota, R. Bonini, F. Servida, A. Morbidelli, M. Carrà, S. “Analysis of detailed kinetic schemes for combustion processes: Application to a methane-ethane mixture” Chemical Engineering Science 49 1994 4211 4221
- Aoki, H. Fujiwara, T. Morozumi, Y. Miura, T. “Measurement of urea thermal decomposition reaction rate for NO selective non-catalytic reduction.” Fifth international conference on technologies and combustion for a clean environment 115 118 1 Lisbon, Portugal 1999
- Abu-Ramadan, E. Saha, K. Li, X. “Modeling of the Injection and Decomposition Processes of Urea-Water-Solution Spray in Automotive SCR Systems,” SAE Technical Paper 2011-01-1317 2011 10.4271/2011-01-1317
- Incorporating CFD to Reduce the Development Time of Low NOx Engine Technologies SwRI Internal Report, SwRI® Project No. 1.03.31.70.R8079 July 7 2010
- Reitz, R. D. “Modeling Atomization Processes in High-Pressure Vaporizing Sprays” Atomization and Spray Technology 3 309 1987
- Schmidt, D. Nouar, I. Senecal, P. Rutland, C. et al. “Pressure-Swirl Atomization in the Near Field,” SAE Technical Paper 1999-01-0496 1999 10.4271/1999-01-0496
- O'Rourke, P. Amsden, A. “A Particle Numerical Model for Wall Film Dynamics in Port-Injected Engines,” SAE Technical Paper 961961 1996 10.4271/961961
- Taylor, G. I. The Shape and Acceleration of a Drop in a High Speed Air Stream. Technical report In the Scientific Papers of G. I. Taylor Batchelor, G. K. 1963
- Ranz, W.E. Marshall, W.R. “Evaporation from Drops” Chemical Engineering Pro. 48 3 141 146 March 1952
- Ranz, W.E. Marshall, W.R. “Evaporation from Drops” Chemical Engineering Pro. 48 3 141 146 March 1952
- Abidin, Z Das, K Basu, D Rothbauer, R “Incorporating CFD To Reduce The Development Time Of Low NOx Engine Technologies” Internal Report SwRI Project No. 1.03.31.70.R8079