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디젤엔진의 NOx 저감을 위한 SCR DeNOx 촉매의 정상 및 비정상 성능 해석Analysis of Steady and Unsteady Performance of SCR DeNOx Catalyst for Reducing NOx Emissions in Diesel Engine
- Other Titles
- Analysis of Steady and Unsteady Performance of SCR DeNOx Catalyst for Reducing NOx Emissions in Diesel Engine
- Issue Date
- Apr-2008
- Publisher
- 한국자동차공학회
- Keywords
- SCR(Selective Catalytic Reduction, 선택적 촉매환원); NH₃(암모니아); NOx(질소산화물); Mathematical Modeling(수학적 모델링); Steady-state Analysis(정상 상태 해석); Transient-state Analysis(비정상 상태 해석)
- Citation
- 한국자동차공학회 춘 추계 학술대회 논문집, pp 205 - 212
- Pages
- 8
- Indexed
- OTHER
- Journal Title
- 한국자동차공학회 춘 추계 학술대회 논문집
- Start Page
- 205
- End Page
- 212
- Abstract
- The steady- and unsteady-state kinetics of the selective catalytic reduction (SCR) of NOx with NH₃ has been investigated over a commercial V₂O?/TiO₂ catalyst. In order to account for the influence of transport effects the kinetics are coupled with a fully transient two-phase 1D+1D monolith channel model. The Langmuir-Hinshelwood (L-H) and Modified Redox (MR) mechanisms are adopted to describe the steady-state kinetic behavior of the V₂O?/TiO₂ catalyst, and their results are compared with each other. A Temkin-type kinetics is used to describe the ammonia adsorption/desorption rate. The reaction rate expressions are based on previously reported papers and are modified to fit the experimental data. The steady-state chemical reaction schemes used in the present mathematical model have been validated extensively with experimental data over a wide range of reaction temperatures.
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