Title: A validated CFD model for prediction of selective non-catalytic reduction of nitric oxide by cyanuric acid

Authors: Per E.C. Burström; Dorota Antos; T. Staffan Lundström; B. Daniel Marjavaara

Addresses: Division of Fluid Mechanics, Luleå University of Technology, SE-971 87 Luleå, Sweden ' Department of Chemical Engineering and Process Control, Rzesców University of Technology, Rzeszów 35-959, al. Powstanców Warszawy 6, Poland ' Division of Fluid Mechanics, Luleå University of Technology, SE-971 87 Luleå, Sweden ' LKAB, SE-981 86 Kiruna, Sweden

Abstract: A CFD model for selective non-catalytic reduction of nitric oxide by cyanuric acid (rapid reduction of nitrogen oxides, RAPRENO_x process) is compared against reactor experiments. The numerical simulations were carried out solving the flow field. A model for the RAPRENO_x chemistry was then included in the model enabling a study of the chemistry in the reactor. The simulations showed that the proposed chemistry model is valid under certain conditions. There is an especially good agreement for high O₂ concentrations while the model failed in reproducing the experimental data for 0% H₂O.

Keywords: NO2 reduction; nitric oxide; selective non-catalytic reduction; SNCR; cyanuric acid; rapid reduction; nitrogen oxides; RAPRENO2; kinetic modelling; CFD; computational fluid dynamics; numerical simulation; injection; chemistry; sublimation; flow reactors.

DOI: 10.1504/PCFD.2016.075156

Progress in Computational Fluid Dynamics, An International Journal, 2016 Vol.16 No.2, pp.108 - 117

Received: 05 Feb 2014
Accepted: 30 Nov 2014
Published online: 05 Mar 2016 *

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