Simulation of Urea-SCR Catalytic Converter for Diesel Engine

Qian Wang; Xiao Jing Han; Ping Qi; Jing Wang

doi:10.4028/www.scientific.net/AMR.354-355.513

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 354-355Simulation of Urea-SCR Catalytic Converter for...

Simulation of Urea-SCR Catalytic Converter for Diesel Engine

Abstract:

A three-dimensional model of a diesel Urea-SCR（Selective Catalytic Reduction）catalytic converter system was set up with aid of CFD software AVL FIRE coupled with available knowledge of SCR chemical reaction kinetics. Basing on the validation of the spray injection model of Urea-water-solution, the numerical simulation was made to get the distribution of pressure, velocity, temperature and species concentration in the converter and NO_x conversion in different conditions by considering the injection and evaporation of the urea-water-solution, the thermal decomposition and hydrolysis into ammonia and the surface catalytic reactions in the monolith. The simulated results have some reference meaning for improving NO_x conversion efficiency and optimizing the diesel SCR catalytic converter.

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Periodical:

Advanced Materials Research (Volumes 354-355)

Pages:

513-517

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.354-355.513

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Online since:

October 2011

Authors:

Qian Wang, Xiao Jing Han, Ping Qi, Jing Wang

Keywords:

Diesel Engine, NO_x Emission, Simulation, Urea-SCR

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