Numerical Simulation of SNCR Technology with Simplified Chemical Kinetics Model
1 VŠB-Technical University of Ostrava, Faculty of Mechanical Engineering, Department of Hydromechanics and Hydraulic Equipment, tř., 17 listopadu 15/2172, Ostrava-Poruba, Czech Republic
2 VŠB-Technical University of Ostrava, Faculty of Mining and Geology, Institute of Environmental Engineering, tř., 17 listopadu 15/2172, Ostrava-Poruba, Czech Republic
The paper deals with numerical simulation of SNCR method. For numerical modelling was used CFD code Ansys/CFX. SNCR method was described by dominant chemical reaction, which were look up NIST Chemical database. The reactions including reduction of NOx and concentration change of pollutants, like N2O and CO in flue gas too. Proposed chemical kinetics and CFD model was applied to two boilers. Both simulations were compared with experimental measurements. First simulation was used to validation of chemical mechanism. Second simulation was based on first simulation and it was used to verification of compiled SNCR chemical mechanism. Next the new variant of the reagent penetration lance was proposed and compared with the original variants.
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