A conceptual design and numerical analysis of the mixerless urea-SCR system

• Autorzy: Kaźmierski Bartosz , Górka Krzysztof , Kapusta Łukasz Jan

Identyfikatory

DOI

10.19206/CE-140539

• Języki publikacji: EN

Abstrakty

EN

In the present study, an innovative design of a urea-selective catalytic reduction (SCR) system without conventional mixing elements was developed. The aim was to obtain a high degree of urea decomposition, and uniform ammonia distribution at the inlet to the catalyst, while minimising the liquid film deposition and keeping the compact design. The concept of the design was based on creating high turbulence and elongating the flow paths of the droplets. The design was verified through a series of numerical simulations based on the Reynolds-averaged Navier-Stokes (RANS) approach and a discrete droplet model (DDM) spray representation. The analysis included various operating conditions as well as subcooled and superheated sprays. A uniform ammonia distribution was achieved regardless of the operating points and spray properties. Additionally, in the case of a flash-boiling injection, a further reduction of the wall film was observed.

Słowa kluczowe

EN

NOx; SCR; selective catalytic reduction; wall film; CFD

PL

NOx; SCR; selektywna redukcja katalityczna; CFD

• Wydawca: Polskie Towarzystwo Naukowe Silników Spalinowych
• Czasopismo: Combustion Engines
• Rocznik: 2021
• Tom: R. 60, nr 4
• Strony: 12--20
• Opis fizyczny: Bibliogr. 30 poz., il. kolor., wykr.

Twórcy

autor

Kaźmierski Bartosz

• Faculty of Power and Aeronautical Engineering, Warsaw University of Technology, Poland

• https://orcid.org/0000-0001-5633-0226+

autor

Górka Krzysztof

• Faculty of Power and Aeronautical Engineering, Warsaw University of Technology, Poland

• https://orcid.org/0000-0002-6450-4916

autor

Kapusta Łukasz Jan

• Faculty of Power and Aeronautical Engineering, Warsaw University of Technology, Poland

• https://orcid.org/0000-0001-9233-3643

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).