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

被引：41

作者：

Koebel, M

Elsener, M

Kröcher, O ^{[1
]}

Schär, C

Röthlisberger, R

Jaussi, F

Mangold, M

机构：

[1] Paul Scherrer Inst, CH-5232 Villigen PSI, Switzerland

[2] Swiss Fed Inst Technol, Measurement & Control Lab, CH-8092 Zurich, Switzerland

[3] Liebherr Mach Bulle SA, CH-1630 Bulle, Switzerland

[4] Oberland Mangold GmbH, D-82467 Garmisch Partenkirchen, Germany

来源：

TOPICS IN CATALYSIS | 2004年 / 30-1卷 / 1-4期

关键词：

selective catalytic reduction; SCR; urea; diesel; exhaust; vanadia; catalyst;

D O I：

10.1023/B:TOCA.0000029726.38961.2b

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A DeNO(x) demonstration system for a diesel engine used in construction machincries 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

页码：43 / 48

页数：6

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