NOx reduction in the exhaust of mobile heavy-duty diesel engines by urea-SCR

被引：0
|
作者：
M. Koebel
M. Elsener
O. Kröcher
Ch. Schär
R. Röthlisberger
F. Jaussi
M. Mangold
机构：
[1] Paul Scherrer Institute,
[2] Measurement and Control Laboratory,undefined
[3] Swiss Federal Institute of Technology,undefined
[4] Liebherr Machines Bulle SA,undefined
[5] Oberland Mangold GmbH,undefined
来源：
Topics in Catalysis | 2004年 / 30-31卷
关键词：
selective catalytic reduction; SCR; urea; diesel; exhaust; vanadia; catalyst;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A DeNOx demonstration system for a diesel engine used in construction machineries and mobile cranes was setup. In preliminary experiments various extruded and coated SCR catalysts were evaluated with and without oxidizing pre-catalyst. The data from stationary tests with two selected catalysts were used to establish various model-based control algorithms for the optimum dosage of urea in the ESC and ETC. A NOx conversion of >93% at <10 ppm average ammonia slip could be achieved at a converter-to-swept volume ratio of <2.0.
引用
收藏
页码：43 / 48
页数：5
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