Modelling of dynamic processes during the regeneration of NOx storage catalyst

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F09%3A00021995" target="_blank" >RIV/60461373:22340/09:00021995 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Modelling of dynamic processes during the regeneration of NOx storage catalyst

Popis výsledku v původním jazyce

Two kinetic models for the NOx reduction in periodically operated NOx storage catalyst are discussed ? the simpler NH3-selectivity model, and the more complex NH3-dynamics model. They differ in the approach to the formation of the NH3 as a main by-product of the stored NOx reduction. The NH3-selectivity model assumes direct reduction of the stored NOx to nitrogen or ammonia with empirically obtained selectivity ratio, dependent on temperature and the reducing agent (CO, H2 and HC). The more complex NH3-dynamics model considers both NH3 formation and NH3 decomposition reactions in the spatially distributed system, resulting in the evolution of moving NH3 peak on the reduction front boundary during the NSRC regeneration. The predictions of the two modelsare compared and confronted with experimental observations. For the estimation of integral component conversion (cumulative emissions) around the mean regeneration phase length the simpler NH3-selectivity model can be used. The more comp

Název v anglickém jazyce

Modelling of dynamic processes during the regeneration of NOx storage catalyst

Popis výsledku anglicky

Two kinetic models for the NOx reduction in periodically operated NOx storage catalyst are discussed ? the simpler NH3-selectivity model, and the more complex NH3-dynamics model. They differ in the approach to the formation of the NH3 as a main by-product of the stored NOx reduction. The NH3-selectivity model assumes direct reduction of the stored NOx to nitrogen or ammonia with empirically obtained selectivity ratio, dependent on temperature and the reducing agent (CO, H2 and HC). The more complex NH3-dynamics model considers both NH3 formation and NH3 decomposition reactions in the spatially distributed system, resulting in the evolution of moving NH3 peak on the reduction front boundary during the NSRC regeneration. The predictions of the two modelsare compared and confronted with experimental observations. For the estimation of integral component conversion (cumulative emissions) around the mean regeneration phase length the simpler NH3-selectivity model can be used. The more comp

Druh

D - Stať ve sborníku

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

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Projekt

<a href="/cs/project/GA104%2F08%2F1162" target="_blank" >GA104/08/1162: Monolitické reaktory pro detoxifikaci výfukových plynů</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2009

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Chemical Engineering Transactions

ISBN

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ISSN

1974-9791

e-ISSN

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Počet stran výsledku

6

Strana od-do

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Název nakladatele

AIDIC Servizi

Místo vydání

Milano

Místo konání akce

Rome, Italy

Datum konání akce

10. 5. 2009

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000270930200018