<abstract xmlns="http://www.w3.org/1999/xhtml">Stoker fired boiler plants are common throughout Eastern Europe. Increasingly strict emission standards will require application of secondary NOx abatement systems on such boilers. Yet operation of such systems, in addition to reducing NOx emissions, may also lead to emission of undesirable substances, for example N2O. This paper presents results of experimental tests concerning N2O formation in the selective non-catalytic NOx emission reduction process (SNCR) in a stoker boiler (WR 25 type). Obtained results lead to an unambiguous conclusion that there is a dependency between the NOx and N2O concentrations in the exhaust gas when SNCR process is carried out in a coal-fired stoker boiler. Fulfilling new emission standards in the analysed equipment will require 40–50% reduction of NOx concentration. It should be expected that in such a case the N2O emission will be approximately 55–60 mg/m3, with the NOx to N2O conversion factor of about 40%.</abstract>

Stoker fired boiler plants are common throughout Eastern Europe. Increasingly strict emission standards will require application of secondary NOx abatement systems on such boilers. Yet operation of such systems, in addition to reducing NOx emissions, may also lead to emission of undesirable substances, for example N2O. This paper presents results of experimental tests concerning N2O formation in the selective non-catalytic NOx emission reduction process (SNCR) in a stoker boiler (WR 25 type). Obtained results lead to an unambiguous conclusion that there is a dependency between the NOx and N2O concentrations in the exhaust gas when SNCR process is carried out in a coal-fired stoker boiler. Fulfilling new emission standards in the analysed equipment will require 40–50% reduction of NOx concentration. It should be expected that in such a case the N2O emission will be approximately 55–60 mg/m3, with the NOx to N2O conversion factor of about 40%.

Experimental investigation of N2O formation in selective non-catalytic NOx reduction processes performed in stoker boiler

Warsaw University of Technology, Institute of Heat Engineering, 21/25 Nowowiejska Str., 00-665 Warszawa,

Polish Journal of Chemical Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Experimental investigation of NO formation in selective non-catalytic NO reduction processes performed in stoker boiler

Stoker fired boiler plants are common throughout Eastern Europe. Increasingly strict emission standards will require application of secondary NOx abatement...

Experimental investigation of N₂O formation in selective non-catalytic NO_x reduction processes performed in stoker boiler

Published Online: Dec 30, 2016

Page range: 104 - 109

DOI: https://doi.org/10.1515/pjct-2016-0078

Keywords
selective non-catalytic reduction process, nitrous oxide emissions, stocker boiler

© 2016 Piotr Krawczyk, published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Experimental investigation of N2O formation in selective non-catalytic NOx reduction processes performed in stoker boiler

Published Online: Dec 30, 2016

Page range: 104 - 109

DOI: https://doi.org/10.1515/pjct-2016-0078

Keywordsselective non-catalytic reduction process, nitrous oxide emissions, stocker boiler

© 2016 Piotr Krawczyk, published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Experimental investigation of N₂O formation in selective non-catalytic NO_x reduction processes performed in stoker boiler

Keywords
selective non-catalytic reduction process, nitrous oxide emissions, stocker boiler