Try Mobilus Beta
Search tips
 This content is not included in your SAE MOBILUS subscription, or you are not logged in.

Deposit Formation in Urea-SCR Systems

Journal Article
2009-01-2780
ISSN: 1946-3952, e-ISSN: 1946-3960
DOI: https://doi.org/10.4271/2009-01-2780
Published November 02, 2009 by SAE International in United States
Deposit Formation in Urea-SCR Systems
Sector:
Citation: Strots, V., Santhanam, S., Adelman, B., Griffin, G. et al., "Deposit Formation in Urea-SCR Systems," SAE Int. J. Fuels Lubr. 2(2):283-289, 2010, https://doi.org/10.4271/2009-01-2780.
Language: English

Abstract:

Formation of urea injection related deposits in a heavy-duty urea-SCR system was studied using an engine lab setup. The exhaust system was instrumented with thermocouples to track temperature changes caused by the liquid spray. Impact of operating parameters (exhaust and ambient temperature, urea solution injection rate) and system design modification (insulation, wiremesh insert) on the temperature profiles and deposit quantities was studied.
Deposits were found in all tests conducted under typical exhaust temperatures. Deposition rate increased with lower exhaust and ambient temperature, and with higher injection rate. Mixer insulation and wiremesh upstream of the mixer reduced the deposits.

Recommended Content

Technical Paper Thermal and Fluid Dynamic Considerations in Aftertreatment System Design for SCR Solid Deposit Mitigation
Technical Paper Investigation of Urea Deposits in Urea SCR Systems for Medium and Heavy Duty Trucks
Technical Paper Comparison Between Air-Assisted and Airless Urea Spray for Diesel SCR System by PDA and CFD