The application of RANS CFD for design of SNCR technology for a pulverized coal-fired boiler

• Main Authors: Ruszak Monika, Inger Marek, Wilk Marcin, Nieścioruk Jan, Saramok Magdalena, Kowalik Wojciech, Rajewski Jakub, Wajman Tomasz, Kacprzak Wojciech, Tadasiewicz Dariusz
• Format: Article
• Language: English
• Published: Sciendo 2017-06-01
• Series: Polish Journal of Chemical Technology
• Subjects: nox emission abatement; power plant boilers; selective non-catalytic reduction; flue gas treatment
• Online Access: https://doi.org/10.1515/pjct-2017-0035

The article describes the technology of NOx emission abatement by SNCR method. The scope of research included CDF simulations as well as design and construction of the pilot plant and tests of NOx reduction by urea in the plant located in industrial pulverized-coal fired boiler. The key step of research was to determine the appropriate temperature window for the SNCR process. The proposed solution of the location of injection lances in the combustion chamber enabled to achieve over a 30% reduction of NOx. It is possible to achieve higher effectiveness of the proposed SNCR technology and meet the required emission standards via providing prior reduction of NOx to the level of 350 mg/um3 using the primary methods.