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Urea Conversion for Low‐Temperature Selective Catalytic Reduction in a Swirled Diesel Exhaust Gas Configuration

Gierth, Sandro ; Hartl, Sandra ; Pollack, Martin ; Hasse, Christian ; Hofmann, Uwe ; Zikoridse, Gennadi ; Rautenberg, Helge ; Will, Frank ; Hahn, Christoph ; Kureti, Sven (2022)
Urea Conversion for Low‐Temperature Selective Catalytic Reduction in a Swirled Diesel Exhaust Gas Configuration.
In: Chemical Engineering & Technology, 2022, 45 (4)
doi: 10.26083/tuprints-00021538
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: Urea Conversion for Low‐Temperature Selective Catalytic Reduction in a Swirled Diesel Exhaust Gas Configuration
Language: English
Date: 1 July 2022
Place of Publication: Darmstadt
Year of primary publication: 2022
Publisher: Wiley-VCH
Journal or Publication Title: Chemical Engineering & Technology
Volume of the journal: 45
Issue Number: 4
DOI: 10.26083/tuprints-00021538
Corresponding Links:
Origin: Secondary publication DeepGreen
Abstract:

A novel design of an AdBlue mixing unit to reduce urea deposits at low temperatures in diesel exhaust is described. The main principle of the mixer includes the injection of AdBlue in an axisymmetric swirling flow, which is achieved by splitting the exhaust stream and off‐centred introduction of the sub‐flows. Crucial geometric parameters were analyzed by computational fluid dynamics (CFD) simulations towards pressure loss, flow field, and spray morphology. Deposit formation was experimentally investigated on three upscaling levels implying an optical test bench, a diesel engine test bench, and a hydraulic excavator. In particular, the studies with the hydraulic excavator showed neither deposits nor critical back pressure. Overall, the experiments substantiated the working principle of the AdBlue mixer.

Uncontrolled Keywords: AdBlue mixing unit, Diesel exhaust, Selective catalytic reduction, Swirling flow, Urea deposits
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-215383
Classification DDC: 500 Science and mathematics > 540 Chemistry
600 Technology, medicine, applied sciences > 620 Engineering and machine engineering
Divisions: 16 Department of Mechanical Engineering > Simulation of reactive Thermo-Fluid Systems (STFS)
Date Deposited: 01 Jul 2022 11:42
Last Modified: 14 Nov 2023 19:04
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/21538
PPN: 499103351
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