The influence of the injection frequency on the urea selective catalytic reduction systems performance

• Autorzy: Rogóż R. , Jaworski P. , Kapusta Ł. J. , Teodorczyk A.

Identyfikatory

DOI

10.19206/CE-2017-311

• Języki publikacji: EN

Abstrakty

EN

This study presents the influence of the UWS injection frequency on a close coupled SCR systems performance. The investigation was performed with the CFD tool AVL Fire. In the paper the analysis of four different UWS injection frequencies in the three different operating points of diesel engine was shown. The assessments of the system performance was referred to the ammonia distribution at catalyst intake and wall film formation inside the investigated geometry, as these are considered as crucial in such a configuration. The results showed that injection frequency affects both factors on different level depending from the flow conditions. In addition, the wall film crystallization risk was discussed basing on the obtained wall film characteristics.

Słowa kluczowe

EN

AVL FIRE; selective catalytic reduction; uniformity index; urea water solution; UWS; wall-film

PL

AVL Fire; selektywna redukcja katalityczna; roztwór mocznika

• Wydawca: Polskie Towarzystwo Naukowe Silników Spalinowych
• Czasopismo: Combustion Engines
• Rocznik: 2017
• Tom: R. 56, nr 3
• Strony: 73--77
• Opis fizyczny: Bibliogr. 13 poz., wykr.

Twórcy

autor

Rogóż R.

• Division of Aircraft Engines at Warsaw University of Technology

autor

Jaworski P.

• Division of Aircraft Engines at Warsaw University of Technology

autor

Kapusta Ł. J.

• Faculty of Power and Aeronautical Engineering at Warsaw University of Technology

autor

Teodorczyk A.

• Faculty of Power and Aeronautical Engineering at Warsaw University of Technology

Bibliografia

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• [4] BRACK, W. et al. Kinetic modeling of urea decomposition based on systematic thermogravimetric analyses of urea and its most important by-products. Chem. Eng. Sci. 2014, 106, 1-8.
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• [8] AVL Fire ® version 2014.2. Porous Module. 2014.
• [9] AVL Fire ® version 2014.2. Spray Module. 2014.
• [10] AVL Fire ® version 2014.2. Wallfilm Module. 2014.
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