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A CFD-based evaluation of Selective Non-Catalytic Reduction of Nitric Oxide in iron ore grate-kiln plants
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.ORCID iD: 0000-0002-1006-8987
Rzeszów University of Technology.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Fluid and Experimental Mechanics.ORCID iD: 0000-0002-1033-0244
LKAB.
2015 (English)In: Progress in Computational Fluid Dynamics, An International Journal, ISSN 1468-4349, E-ISSN 1741-5233, Vol. 15, no 1, p. 32-46Article in journal (Refereed) Published
Abstract [en]

The overall goal of this study is to explore the function of selective non-catalytic reduction of nitric oxide (NO) in iron ore grate-kiln plants. Computational fluid dynamics is used to model the flow and the injection of urea and cyanuric acid reagents. Temperature, residence time and inlet NO content are varied, and the effects on the reduction of NO are studied. The simulations show that the use of urea results in a higher reduction of NO within the temperature window investigated as compared to cyanuric acid; however, urea cannot be used for NO reduction over the entire range of applicable temperatures. Cyanuric acid is usable within the entire temperature range for high NO content (i.e., 300 ppm) in the flue gas, but it is not effective for low NO concentration (i.e., 150 ppm). Moreover, the simulations indicate that temperature has a larger influence on the NO reduction than the residence time.

Place, publisher, year, edition, pages
2015. Vol. 15, no 1, p. 32-46
National Category
Fluid Mechanics and Acoustics
Research subject
Fluid Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-7156DOI: 10.1504/PCFD.2015.067327ISI: 000349804400005Scopus ID: 2-s2.0-84922522422Local ID: 57b314a5-dadd-4c11-ac2a-b4cd25840681OAI: oai:DiVA.org:ltu-7156DiVA, id: diva2:980044
Note
Validerad; 2015; Nivå 2; 20131101 (stlu)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Burström, PerLundström, T. Staffan

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