Formation of Urea-Based Deposits in an Exhaust System: Numerical Predictions and Experimental Observations on a Hot Gas Test Bench

Using a generic configuration of an exhaust system, the formation of deposits due to urea-derived byproducts is examined. For this purpose, the temporal profile of the formation of deposits is visually observed and the resulting deposit composition is analyzed. Based on the experimental results, the...

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Bibliographic Details
Published in:Emission control science and technology (Online) 2016-07, Vol.2 (3), p.115-123
Main Authors: Brack, Wolfgang, Heine, Barbara, Birkhold, Felix, Kruse, Matthias, Deutschmann, Olaf
Format: Article
Language:English
Subjects:
Deposits
Earth and Environmental Science
Earth Sciences
Environmental Science and Engineering
Exhaust gases
Exhaust systems
Industrial Chemistry/Chemical Engineering
Reaction mechanisms
Surfaces and Interfaces
Thin Films
Urea
Ureas
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Summary:Using a generic configuration of an exhaust system, the formation of deposits due to urea-derived byproducts is examined. For this purpose, the temporal profile of the formation of deposits is visually observed and the resulting deposit composition is analyzed. Based on the experimental results, the most important deposit regime can be identified depending on the measured wall temperatures and is compared with the prediction of a suitable reaction mechanism.
ISSN:2199-3629
2199-3637
DOI:10.1007/s40825-016-0042-2