Koo SM  Yoo KS  Chang HS

Vol. 25,  No. 1, pp. 63-73, Mar.  2019
10.7464/ksct.2019.25.1.063

Denitrification SNCR (selective non-catalytic reduction) CFD (computational fluid dynamics)

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Numerical analysis was done to evaluate the chemical reaction and the reduction rate inside of selective non-catalytic reduction to denitrification in combustion process. The NOX reduction in selective non-catalytic reduction is converted to not only nitrogen but also nitrous oxide. Simultaneous NOX reduction and nitrous oxide generation suppressing is required in selective non-catalytic reduction because nitrous oxide influences the global warming as a greenhouse gas. The current study was performed compare the computational analysis in the same temperature and amount of NaOH, and in comparison with the previous research experiments and confirmed the reliability of the computational fluid dynamics. Additionally, controlling the addition amount of NaOH to predict the NOX reduction efficiency and nitrous oxide production. Numerical analysis was done to check the mass fraction of each material in the measurement point at the end of selective non-catalytic reduction. Experimental Value and simulation value by numerical analysis showed an error of up to 18.9% was confirmed that a generally well predicted. and it was confirmed that the widened temperature range of more than 70% NOX removal rate is increased when the addition amount of NaOH. So, large and frequent changes of the reaction temperature waste incineration facilities are expected to be effective.