Experimental investigation of N2O formation in selective non-catalytic NOx 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 systems on such boilers. Yet operation of such systems, in addition to reducing NOx emissions, may also lead to emission of undesirable substanc...
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| Format: | Article |
| Language: | English |
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Sciendo
2016-12-01
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| Series: | Polish Journal of Chemical Technology |
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| Online Access: | https://doi.org/10.1515/pjct-2016-0078 |
| _version_ | 1819115259684716544 |
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| author | Krawczyk Piotr |
| author_facet | Krawczyk Piotr |
| author_sort | Krawczyk Piotr |
| collection | DOAJ |
| description | 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%. |
| first_indexed | 2024-12-22T04:58:21Z |
| format | Article |
| id | doaj.art-405a20a05ac84487b94e8cc69ba5a01b |
| institution | Directory Open Access Journal |
| issn | 1899-4741 |
| language | English |
| last_indexed | 2024-12-22T04:58:21Z |
| publishDate | 2016-12-01 |
| publisher | Sciendo |
| record_format | Article |
| series | Polish Journal of Chemical Technology |
| spelling | doaj.art-405a20a05ac84487b94e8cc69ba5a01b2022-12-21T18:38:19ZengSciendoPolish Journal of Chemical Technology1899-47412016-12-0118410410910.1515/pjct-2016-0078pjct-2016-0078Experimental investigation of N2O formation in selective non-catalytic NOx reduction processes performed in stoker boilerKrawczyk Piotr0Warsaw University of Technology, Institute of Heat Engineering, 21/25 Nowowiejska Str., 00-665 Warszawa, PolandStoker 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%.https://doi.org/10.1515/pjct-2016-0078selective non-catalytic reduction processnitrous oxide emissionsstocker boiler |
| spellingShingle | Krawczyk Piotr Experimental investigation of N2O formation in selective non-catalytic NOx reduction processes performed in stoker boiler Polish Journal of Chemical Technology selective non-catalytic reduction process nitrous oxide emissions stocker boiler |
| title | Experimental investigation of N2O formation in selective non-catalytic NOx reduction processes performed in stoker boiler |
| title_full | Experimental investigation of N2O formation in selective non-catalytic NOx reduction processes performed in stoker boiler |
| title_fullStr | Experimental investigation of N2O formation in selective non-catalytic NOx reduction processes performed in stoker boiler |
| title_full_unstemmed | Experimental investigation of N2O formation in selective non-catalytic NOx reduction processes performed in stoker boiler |
| title_short | Experimental investigation of N2O formation in selective non-catalytic NOx reduction processes performed in stoker boiler |
| title_sort | experimental investigation of n2o formation in selective non catalytic nox reduction processes performed in stoker boiler |
| topic | selective non-catalytic reduction process nitrous oxide emissions stocker boiler |
| url | https://doi.org/10.1515/pjct-2016-0078 |
| work_keys_str_mv | AT krawczykpiotr experimentalinvestigationofn2oformationinselectivenoncatalyticnoxreductionprocessesperformedinstokerboiler |