setembro 2015 vol. 2 num. 1 - XXIII Simpósio Internacional de Engenharia Automotiva
Artigo Completo - Open Access.
OPTIMIZATION OF SELECTIVE-TYPE AFTERTREATMENT SYSTEMS IN DIESEL ENGINES
Diesel engine technology has been driven by stringent regulation. To fulfill this demands emission control systems are constantly improving. In this context exhaust gas aftertreatment development assumes an important role however the in-cylinder emissions control is fundamental to comply with future legislations. Among the aftertreatment systems applied to reduce diesel engines combustion products the Selective Catalytic Reduction (SCR), which converts nitrogen oxides, (NOx) into nitrogen N2 and water H2O via dosing a chemical reducing agent containing ammonia in the exhaust system is an already proven solution for most medium and heavy duty Diesel (MDD and HDD) applications. The current work aims to compare the behavior of different urea and formamide-based reducing agents using a selective catalytic reduction aftertreatment system (ATS) when it comes to NOx reduction. Another purpose of this study in addition to studying the NOx reduction is also to understand the effects or side-effects in other gases like carbon monoxide (CO), carbon dioxide (CO2), hydrocarbon (HC), oxygen (O2), ammonia (NH3) and to discuss in detail the potential of using this alternative reducing agents to comply with EURO VI standards and optimized SCR systems towards increasing their efficiency. Regarding the SCR catalyst system as to NOx reduction it is possible to say that urea-based mixtures are the most efficient ones but on the other hand are also those that present higher values of ammonia slip. The formamide-based mixtures do not present efficiency as significant as the urea-based mixtures but the ammonia slip levels produced by those mixtures are virtually none. With regard to CO and HC emissions the formamide-based mixtures have presented significant increase on the emissions of those two gases while in the urea-based mixtures the values have remained virtually unchanged.
-  .ARGACHOY, C. Andamp; PIMENTA, O. P., Phenomenological model of particulate matter emission from direct injection diesel engines, Journal of the Brazilian Society of Mechanical Science and Engineering, v. XXVII, n. 3, p. 266-273, ABCM, 2005.
-  .LOURENCO, A. A. M., MARTINS, C.A., LACAVA, P. T. Andamp; FERREIRA, M. A., Selective catalytic reduction study with alternative reducing agents, Environmental Engineering Science, v.30Issue 5, p.221-231.doi:10.1089/ees.2010008, 201
-  . PARVULESCU V.I., GRANGE P., DELMON B., Catalytic Removal of NO, Catalysis Today 46, p. 233- 316, 1998.
-  . WILLAND J., Selective non-catalytic NOx reduction in Diesel engines using aqueous urea, SAE Technical Paper Series 982651, 1998.
-  . Emission test cycles description, available at http://www.dieselnet.com/standards searched on May, 20th 201
-  . COBB, D., GLATCH, L., RUUD, J. and SNYDER, S., Application of selective catalytic reduction (SCR) technology for NOx reduction from refinery combustion sources, Environmental Progress and Sustainable Energy, Vol. 10, pp. 49-59, doi 10.1002/ep.670100116, 200
-  . METKAR, P. S., HAROLD, M. P. Andamp; BALAKOTAIAH, V., Experimental and kinetic modeling study of NH-SCR of NOx on Fe-ZSM-5, Cu-chabazite and combined Fe- and Cu-zeolite monolithic catalysts, Chemical engineering science 87, pp. 51–66, Science Direct Elsevier, Elsevier Ltd, 0009-2509, 2013.
-  . BAUMGARTEN, C., Mixture formation in internal combustion engines, Springer-Verlag Heidelberg, Hannover, Germany, 2005.
-  . ARROWSMITH, D., BOTT, A., Andamp; BUSH, P., Development of a compact urea-SCR+CRT™ system for heavy-duty Diesel using a Design of Experiments approach, SAE Technical Paper Series, 2006-01-0636, 2006.
-  . BIRKHOLD, F., MEINGAST, U., WASSERMAN, P. Andamp; DEUTSCHMAN, O., Modeling and simulation of the injection of urea-water-solution for automotive SCR DeNOx systems, 0926-3373, Applied Catalysis B: Environmental, 70, pp. 119–127, Science Direct Elsevier, doi:1016/j.apcatb.2005.12.035, 2007.
-  . LINDSTEDT, R.P., LOCKWOOD, F.C. Andamp; SELIM M.A., A detailed kinetic study of ammonia oxidation, Combustion Science and Technology, Vol. 108, n. 4-6, pp. 231-254, 1995.
-  . NOVA I., NOVA I.,, CIARDELLI C., TRONCONI T., CHATTERJEE D. Andamp; WEIBEL M., NH3-NO/NO2 SCR for Diesel exhausts after treatment: mechanism and modeling of a catalytic converter, Topics in Catalysis Vol. 42–43, 2007.
-  . CIARDELLI, C., NOVA, I., TRONCONI, E., CHATTERJEE, D., BURKHARDT, D. Andamp; WEIBEL, M., SCR-DeNOx for diesel engine exhaust aftertreatment: unsteady-state kinetic study and monolith reactor modeling, Chemical Engineering Science, 70 (1–4), 80, 2004.
-  . Robert BOSCH, SCR Systems Controls, Catalogue, 2010.
-  . GRANGER P. Andamp; PARVULESCU V.I., Past and Present in DENOX Catalysis, Elsevier, First Edition 2007.
-  . WILLI R., RODUIT B., KOEPPEL R., WOKAUN A. Andamp; BAIKER A., Selective reduction of NO by NH3 over vanadia-based commercial catalyst: parametric sensitivity and kinetic modeling, Chemical Engineering Science, 51 (11), pp. 2897-2902, 1996.
-  . BRANDENBERGER S., CASAPU M., KRÖCHER O., TISSLER A. Andamp; ALTHOFF R., Hydrothermal deactivation of Fe-ZSM-5 catalysts for the selective catalytic reduction of NO with NH3, Applied Catalyst, Vol. 101, pp. 649–659, 2011.
-  . BISWAS S., VERMA V., SCHAUER J. J. Andamp; SIOUTAS C., Chemical speciation of PM emissions from heavy-duty diesel vehicles equipped with diesel particulate filter (DPF) and selective catalytic reduction (SCR) retrofits, Atmospheric Environment, 43: 1917-1925, 2009.
-  . HERNER J.D., Hu S., ROBERTSON W.H., HUAI T., CHANG M.C.O., RIEGER P. Andamp; Ayala A., Effect of advanced aftertreatment for PM and NOx reduction on heavy-duty Diesel engine ultrafine particle emissions, Environmental Science Technology, 45: 2413–2419, 2011.
-  . KÜNKEL, C., ODENBRAND, C., Andamp; WESTERBERG, B., A catalytic NOx aftertreatment system for heavy-duty trucks using diesel fuel as reducing agent, SAE Technical Paper 1999-01-3563, 1999, doi:10.4271/1999-01-3563, 1999.
-  . GERHART, C., KRIMMER, H., HAMMER, B., SCHULZ, B., KRÖCHER, O., PEITZ, D., SATTELMAYER, T., TOSHEV, P., WACHTMEISTER, G., HEUBUCH, A., Andamp; JACOB, E., Development of a 3rd generation SCR NH3-direct dosing system for highly efficient DENOx, SAE International Journal of Engines, 2012-01-1078,Vol. 5 N. 3 pp. 938-946, doi: 10.4271/2012-01-1078, 2012.
-  . WALKER A.P. BLAKEMAN, P.G., ILKENHANS T., MAGNUSSON B. Andamp; McDONALD A.C., The development and in-field demonstration of highly durable SCR catalyst system, SAE Technical Paper Series 2004-01-1289, 2004.
-  . WILLEMS F. Andamp; CLOUDT R., Experimental demonstration of a new model-based SCR control strategy for cleaner heavy-duty diesel engines, IEEE Transactions on Control Systems Technology, Vol. 19, doi 10.1109/TCST.2010.2057510, 2011.
-  . BASF Catalogue, AdBlue, Technical Leaflet, M 6621 e, pp 1-6, 2006.
-  . GIESHOFF, J., SCHÄFER-SINDLINGER, A., SPURK, P., van den TILLAART, J. et al., Improved SCR systems for heavy duty applications, SAE Technical Paper 2000-01-0189, 2000, doi:10.4271/2000-01-0189, 2000.
-  . JACOB et al. (1990), Ammonia precursor substance and method for the selective catalytic reduction of nitrogen oxides in oxygen-containing exhaust gases of vehicles, Patent DE 102005059250 B4, 1990.
-  . JOHNSON MATTHEY PLC, The Catalyst Technical Handbook, 2005.
-  . DJERAD S., CROCOLL M., KURETI S., TIFOUTI L. Andamp; WEISWEILER W., Effect of oxygen concentration on the NOx reduction with ammonia over V2O5–WO3/TiO2 catalyst, Catalysis Today 113, pp. 208-214, 2006.
-  . MARTELL, J. M., YU, H.T. Andamp; GODDARD, J.D., Molecular decompositions of acetaldehyde and formamide: theoretical studies using Hartree-Fock, Moller-Plesset and density functional theories, Molecular Physics, Vol. 92, 497-502, 1997.
-  . ALMEIDA, F. L., ZOLDAK, P., WANG ,Y., SOBIESIAK, A. Andamp; LACAVA, P. T., Multi-dimensional engine modeling study of EGR, fuel pressure, post-injection and compression ratio for a light duty diesel engine, ASME ICEF Technical Conference, ICEF2014-5661, pp. V002T06A017; 14 pages doi:10.1115/ICEF2014-5661; ISBN: 978-0-7918-4617-9, 2014.
Lourenço, Álvaro Augusto de Mattos; Almeida, Fábio Luz; Glovaski, Leandro Seizo Glovaski; "OPTIMIZATION OF SELECTIVE-TYPE AFTERTREATMENT
SYSTEMS IN DIESEL ENGINES", p. 635-658 . In: In Anais do XXIII Simpósio Internacional de Engenharia Automotica - SIMEA 2014 [=Blucher Engineering Proceedings]. São Paulo: Blucher, 2015. .
São Paulo: Blucher,
ISSN 2357-7592, DOI 10.5151/engpro-simea2015-PAP203
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