Pseudo-Desublimation of AdBlue Microdroplets through Selective Catalytic Reduction System Microchannels and Surfaces
In the present paper, the occurrence and development of the pseudo-desublimation process of AdBlue microdroplets in the microchannels and surfaces of catalytic reduction systems (SCR) are reported. In order to understand how the pseudo-desublimation process develops, the influence of heat flux value...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-09-01
|
| Series: | Micromachines |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2072-666X/14/9/1807 |
| _version_ | 1797578743683743744 |
|---|---|
| author | Claudiu Marian Picus Ioan Mihai Cornel Suciu |
| author_facet | Claudiu Marian Picus Ioan Mihai Cornel Suciu |
| author_sort | Claudiu Marian Picus |
| collection | DOAJ |
| description | In the present paper, the occurrence and development of the pseudo-desublimation process of AdBlue microdroplets in the microchannels and surfaces of catalytic reduction systems (SCR) are reported. In order to understand how the pseudo-desublimation process develops, the influence of heat flux values on the heat transfer of AdBlue injection was analysed, taking into account the structure of the microchannels inside the SCR and the overall configuration of the installation. The evolution of the AdBlue vapour flow in the SCR system was simulated, as well as the temperature variation along an SCR microchannel through which the mixture flows. An experimental set-up was designed in order to visualise and interpret the processes at the onset of pseudo-desublimation. The results described in this paper confirm the existence of a pseudo-desublimation process that occurs only under certain temperature conditions when AdBlue is injected into SCR systems. The characteristics of the crystals formed and their growth rate depend on the working temperature, which could be controlled by efficient preheating methods immediately after engine start. A better understanding of the process will allow the development of methods of avoiding solid depositions on SCR system components, which has a direct impact on SCR catalyst performance and durability. |
| first_indexed | 2024-03-10T22:27:06Z |
| format | Article |
| id | doaj.art-7d5f934ca7c6460989202016a69fb703 |
| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-03-10T22:27:06Z |
| publishDate | 2023-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj.art-7d5f934ca7c6460989202016a69fb7032023-11-19T12:00:54ZengMDPI AGMicromachines2072-666X2023-09-01149180710.3390/mi14091807Pseudo-Desublimation of AdBlue Microdroplets through Selective Catalytic Reduction System Microchannels and SurfacesClaudiu Marian Picus0Ioan Mihai1Cornel Suciu2Faculty of Mechanical Engineering, Automotive and Robotics, Stefan cel Mare University, 720229 Suceava, RomaniaFaculty of Mechanical Engineering, Automotive and Robotics, Stefan cel Mare University, 720229 Suceava, RomaniaFaculty of Mechanical Engineering, Automotive and Robotics, Stefan cel Mare University, 720229 Suceava, RomaniaIn the present paper, the occurrence and development of the pseudo-desublimation process of AdBlue microdroplets in the microchannels and surfaces of catalytic reduction systems (SCR) are reported. In order to understand how the pseudo-desublimation process develops, the influence of heat flux values on the heat transfer of AdBlue injection was analysed, taking into account the structure of the microchannels inside the SCR and the overall configuration of the installation. The evolution of the AdBlue vapour flow in the SCR system was simulated, as well as the temperature variation along an SCR microchannel through which the mixture flows. An experimental set-up was designed in order to visualise and interpret the processes at the onset of pseudo-desublimation. The results described in this paper confirm the existence of a pseudo-desublimation process that occurs only under certain temperature conditions when AdBlue is injected into SCR systems. The characteristics of the crystals formed and their growth rate depend on the working temperature, which could be controlled by efficient preheating methods immediately after engine start. A better understanding of the process will allow the development of methods of avoiding solid depositions on SCR system components, which has a direct impact on SCR catalyst performance and durability.https://www.mdpi.com/2072-666X/14/9/1807microchannelspseudo-desublimationSCRAdBlueNOx |
| spellingShingle | Claudiu Marian Picus Ioan Mihai Cornel Suciu Pseudo-Desublimation of AdBlue Microdroplets through Selective Catalytic Reduction System Microchannels and Surfaces Micromachines microchannels pseudo-desublimation SCR AdBlue NOx |
| title | Pseudo-Desublimation of AdBlue Microdroplets through Selective Catalytic Reduction System Microchannels and Surfaces |
| title_full | Pseudo-Desublimation of AdBlue Microdroplets through Selective Catalytic Reduction System Microchannels and Surfaces |
| title_fullStr | Pseudo-Desublimation of AdBlue Microdroplets through Selective Catalytic Reduction System Microchannels and Surfaces |
| title_full_unstemmed | Pseudo-Desublimation of AdBlue Microdroplets through Selective Catalytic Reduction System Microchannels and Surfaces |
| title_short | Pseudo-Desublimation of AdBlue Microdroplets through Selective Catalytic Reduction System Microchannels and Surfaces |
| title_sort | pseudo desublimation of adblue microdroplets through selective catalytic reduction system microchannels and surfaces |
| topic | microchannels pseudo-desublimation SCR AdBlue NOx |
| url | https://www.mdpi.com/2072-666X/14/9/1807 |
| work_keys_str_mv | AT claudiumarianpicus pseudodesublimationofadbluemicrodropletsthroughselectivecatalyticreductionsystemmicrochannelsandsurfaces AT ioanmihai pseudodesublimationofadbluemicrodropletsthroughselectivecatalyticreductionsystemmicrochannelsandsurfaces AT cornelsuciu pseudodesublimationofadbluemicrodropletsthroughselectivecatalyticreductionsystemmicrochannelsandsurfaces |