Simulation and Optimization of Urea-SCR System in Diesel Engine

Qian Wang; Duo Zhang; Jing Wang; Shuo Li

doi:10.4028/www.scientific.net/AMM.316-317.1156

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 316-317Simulation and Optimization of Urea-SCR System in...

Simulation and Optimization of Urea-SCR System in Diesel Engine

Abstract:

A three-dimensional Urea-SCR catalytic converter model was simulated with the method of CFD coupled with chemical reaction dynamic in this paper. With the modeling of urea solution injection and spray, the urea spray angle was optimized to reduce the urea wallfilm on the pipe wall. The flow fields and component distributions of a full scale Urea-SCR catalyst system were obtained to analyze the flow and chemical reaction characteristic of SCR system. Finally, an SCR system with a simple blade SCR mixer was simulated, the results indicated that the mixer can accelerate the evaporation and thermolysis of urea solution, and improve reductant uniformity and NOx conversion efficiency of Urea-SCR system.

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Periodical:

Applied Mechanics and Materials (Volumes 316-317)

Pages:

1156-1161

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.316-317.1156

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Online since:

April 2013

Authors:

Qian Wang, Duo Zhang, Jing Wang, Shuo Li

Keywords:

Diesel Engine, NO_x Emission, SCR Mixer, Urea-SCR

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References

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