Concept of vaporized urea dosing in selective catalytic reduction
Authors:
- Rafał Sala,
- Piotr Bielaczyc,
- Marek Brzeżański
Abstract
This work tried to identify the influence of dosing vaporized urea solution in a selective catalytic reduction (SCR) system. In the SCR method, optimising the urea evaporation and mixing properties can significantly improve the NOx conversion efficiency in the catalyst. It can also exert a positive effect on the uniformity of NH3 concentration distribution across the catalyst face. The concept of an electrically evaporated urea-dosing system was investigated and it was found that urea pre-heating prior to introduction into the exhaust gas is favourable for enhancing NOx removal under steady-state and transient engine operation. In the urea evaporating system the heatingchamberwasofacylindricaltubeshapeandtheureavapourwasintroducedintotheexhaust by means of a Venturi orifice. The concept urea dosing was only a custom-made solution, but proved to be superior to the regular dosing system operating in the liquid phase.
- Record ID
- CUT97d3cc59c6284200b02d6190fb3f754f
- Publication type
- Publication categories
- ; ;
- Author
- Pages
- 5-14
- Other elements of collation
- rys.; wykr.; Bibliografia (na s.) - 13-14; Bibliografia (liczba pozycji) - 25
- Substantive notes
- Punktacja MNiSW/MEiN (rozdział) - 5
- Book
- Kröcher Oliver Oliver Kröcher (eds.): Selective catalytic reduction of NOx : [printed edition of the special issue published in Catalysts], Catalysts, 2018, Basel Switzerland, MDPI, ISBN ISBN 978-3-03897-364-5 (Pbk)
- Keywords in English
- toxic components of exhaust gases, combustion engines, selective catalytic reduction
- DOI
- DOI:10.3390/books978-3-03897-365-2 Opening in a new tab
- URL
- https://www.mdpi.com/books/pdfview/book/1029 Opening in a new tab
- Language
- eng (en) English
- License
- Score (nominal)
- 30
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT97d3cc59c6284200b02d6190fb3f754f/
- URN
urn:pkr-prod:CUT97d3cc59c6284200b02d6190fb3f754f
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