This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Simulation Research of the Structural Downsizing of SCR Reactor
Technical Paper
2017-01-2387
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
Currently, selective catalytic reduction (SCR) is one of the main after-treatment systems to control diesel engine NOx emission. But the SCR system is bulky, considering the limited installation space. Therefore, the design of SCR system with the compact structure and reliable performance is one of the essential topics. In this study, the structure parameters, such as catalyst cross-sectional area, catalyst length, substrate wall thickness, coating thickness, channels per square inch (CPSI) of substrate, are taken into consideration to study their effects on the SCR performance and narrow the scope of various structural parameters for the following optimization study. Then, the structural parameters of the SCR reactor are optimized by considering the coupling relationship among these structural parameters by using the Response Surface Methodology (RSM) at high load of diesel engine. The numbers of structural parameters are finally optimized as follows: cross-sectional area is 59612 mm2; length is 190 mm; CPSI is 350; coating thickness is 0.01 mm; substrate wall thickness is 0.21 mm. At the same time, NOx conversion rate is 94%; catalyst pressure drop is 733.9 Pa. Compared with the original, catalyst volume is reduced by 31.3%. Optimized structure parameters are validated. The differences between the predicted values and the simulated values of NOx conversion rate and pressure drop are within acceptable limits.
Authors
- Yonge Wu - State Key Lab of Engines Tianjin University
- Xingyu Liang - State Key Lab of Engines Tianjin University
- Ge-Qun Shu - State Key Lab of Engines Tianjin University
- Boxi Shen - State Key Lab of Engines Tianjin University
- Yuesen Wang - State Key Lab of Engines Tianjin University
- Xikai Liu - State Key Lab of Engines Tianjin University
- Zhijun Li - State Key Lab of Engines Tianjin University
Citation
Wu, Y., Liang, X., Shu, G., Shen, B. et al., "Simulation Research of the Structural Downsizing of SCR Reactor," SAE Technical Paper 2017-01-2387, 2017, https://doi.org/10.4271/2017-01-2387.Data Sets - Support Documents
Title | Description | Download |
---|---|---|
Unnamed Dataset 1 | ||
Unnamed Dataset 2 | ||
Unnamed Dataset 3 | ||
Unnamed Dataset 4 |
Also In
References
- Jungmo O. , Kihyung L. Spray characteristics of a urea solution injector and optimal mixer location to improve droplet uniformity and NOx conversion efficiency for selective catalytic reduction Fuel 2014 10.1016/j.fuel.2013.11.032
- Miao Y , Lea-Der C , Yongsheng H e al. Study of SCR cold-start by energy method Chemical Engineering Journal 2009 10.1016/j.cej.2009.07.054
- Han B. , Shen Y.S. , Zhu S.M. , Liu Y.L. Promotional effect of phosphorylation on CeSn0.8W0.6Ox/TiAl0.2Si0.1Oy for NH3-SCR of NO from marine diesel exhaust JOURNAL OF RARE EARTHS 2016 10.1016/S1002-0721(16)60128-X
- Song Z. , Yan L. , Jinxi Z. A Study on Exhaust Gas Emission Control Technology of Marine Diesel Engine Advanced Materials Research 2013 10.4028/www.scientific.net/AMR.864-867.1804
- Lou D.M. , Zhang Z.,X. , Tan P.,Q. , MA B. Progress of Research on Selective Catalytic Reduction Technology for Vehicle Diesel Engine Environmental Science & Technology 2009
- Xubo G. , Dongwei Y. , Feng W. , Jiawei D. Modeling and simulation of urea-water-solution droplet evaporation and thermolysis processes for SCR systems Chinese Journal of Chemical Engineering 2016 10.1016/j.cjche.2016.04.026
- Koebel M , Elsener M , Kleemann M Urea-SCR: a promising technique to reduce NO x emissions from automotive diesel engines Catalysis Today 2000 10.1016/S0920-5861(00)00299-6
- Li X. , Wu G. T. , Sun Y. Parameter calibration of reaction kinetic for marine SCR catalyst Journal of Dalian Maritime University 2015
- Jeong , S. , Lee , S. , Kim , W. , and Lee , C. Simulation on the Optimum Shape and Location of Urea Injector for Urea-SCR System of Heavy-duty Diesel Engine to Prevent NH3 Slip SAE Technical Paper 2005-01-3886 2005 10.4271/2005-01-3886
- Soo-Youl P. , Christopher R. Analysis of SCR performance differences caused from flow characteristics of wall flow and flow through type substrate: A simulation study Chemical Engineering Science 2013 10.1016/j.ces.2012.11.016
- Tang , W. , Youngren , D. , SantaMaria , M. , and Kumar , S. On-Engine Investigation of SCR on Filters (SCRoF) for HDD Passive Applications SAE Int. J. Engines 6 2 862 872 2013 10.4271/2013-01-1066
- Santos A , Bahamonde A , Schmid M , Avila P et al. Mass transfer influences on the design of selective catalytic reduction (SCR) monolithic reactors Chemical Engineering and Processing: Process Intensification 1998 10.1016/S0255-2701(97)00057-3
- Enrico T , Alessandra B The role of inter- and intra-phase mass transfer in the SCR-DeNOx reaction over catalysts of different shapes Catalysis Today 1999 10.1016/S0920-5861(99)00079-6
- Dhanushkodi SR , Mahinpey N , Wilson M Kinetic and 2D reactor modeling for simulation of the catalytic reduction of NO x in the monolith honeycomb reactor Process Safety and Environmental Protection 2008 10.1016/j.psep.2008.02.004
- Yang B. , Zhou C.B. , Chen K. Technology Roadmap of SCR After-Treatment for Diesel Application to Meet the Emission Regulation above CHINA 5 Value Engineering 2017 10.14018/j.cnki.cn13-1085/n.2017.07.040
- Ma J.Y. , Qu D.W. , LI J. Decomposition characteristics of solid reductant of vehicle SCR system Journal of jilin University (Engineering and Technology Edition) 2015 10.13229/j.cnki.jdxbgxb201506011
- Zhang W.J. , Shuai S.J. , Dong H.Y. , Wang Z. ET AL. 3D Modeling of flow, Spray of Reductant and Surface Chemical Reaction in Diesel Urea SCR-NOx Catalytic Converter Transactions of CSICE 2007 10.16236/j.cnki.nrjxb.2007.05.009
- Chi , J. and DaCosta , H. Modeling and Control of a Urea-SCR Aftertreatment System SAE Technical Paper 2005-01-0966 2005 10.4271/2005-01-0966
- Schaub G. , Unruh D. , Wang J. , Turek T. Kinetic analysis of selective catalytic NOx reduction (SCR) in a catalytic filter Chemical Engineering and Processing 2003 10.1016/S0255-2701(02)00056-9