Numerical Simulation on Effect of Heating Temperature upon the Gaseous Flow in a SCR Catalytic Filter Device

2009-01-2628

11/02/2009

Event
SAE 2009 Powertrains Fuels and Lubricants Meeting
Authors Abstract
Content
Selective catalytic reduction (SCR) and diesel particulate filter (DPF) as a compact system are used to reduce NOx and soot emissions, respectively. The aim of this study is to develop a SCR catalytic filter device for reducing simultaneously NOx and soot emissions from a combustor. In order to attain the optimal NOx conversion, the amount of ammonia must be managed to the amount of NOx on catalyst surface. If the amount of ammonia is higher than that of NOx, ammonia slip will be presented. Therefore, the uniform ammonia distribution around the catalyst is one of the challenges for the SCR application. Temperature is also a sensitive parameter in the reaction rate of NOx with ammonia. In this paper, the heating effect on the gaseous flow in the SCR catalytic filter device is studied with the uniformity of ammonia distribution. As a result, it is found that the temperature around catalytic filters is lower at Re = 4255 than that at Re = 64. The result also shows that the mixing index decreases as increasing the heating temperature in SCR device.
Meta TagsDetails
DOI
https://doi.org/10.4271/2009-01-2628
Pages
8
Citation
Bae, M., "Numerical Simulation on Effect of Heating Temperature upon the Gaseous Flow in a SCR Catalytic Filter Device," SAE Technical Paper 2009-01-2628, 2009, https://doi.org/10.4271/2009-01-2628.
Additional Details
Publisher
Published
Nov 2, 2009
Product Code
2009-01-2628
Content Type
Technical Paper
Language
English