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http://dx.doi.org/10.9726/kspse.2013.17.1.027

Impact of Ash Deposit on Conversion Efficiency of Wall Flow Type Monolithic SCR Reactor  

Park, Soo-Youl (Department of Mechanical Engineering, Massachusetts Institute of Technology)
Publication Information
Journal of Power System Engineering / v.17, no.1, 2013 , pp. 27-35 More about this Journal
Abstract
SCR (Selective Catalytic Reduction) on DPF (Diesel Particulate Filter) is a multi-functional after-treatment device which integrates soot filtration and DeNOx function into a single can. Because of its advantage in package and cost, the SCR on DPF is considered as a potential candidate for future application. It inherently employes wall flow type monolithic reactor so ash included in exhaust gas may deposit inside the inlet channel of this device. This study is intended to identify the impact of ash deposit on SCR reaction under wall flow type monolithic reactor. Simulation approach is used so relevant species transport equations for wall flow type monolith is derived. These equations can be solved together with momentum conservation equations and give solution for conversion performance. Both ash deposit and clean catalyst case are simulated and comparison of these two cases gives an insight for the impact of ash deposit on conversion performance. Ash deposit can be classified as ash layer and ash plug. and impact of ash deposit is described along with different morphology of ash deposit.
Keywords
Wall Flow Monolithic Reactor; SCR; Mathematical Modeling; Conversion Efficiency; Ash Deposit;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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