Mass transfer effects in modelling of catalytic monolith converter with NOx storage

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F02%3A00007173" target="_blank" >RIV/60461373:22340/02:00007173 - 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

Mass transfer effects in modelling of catalytic monolith converter with NOx storage

Popis výsledku v původním jazyce

NOx storage and reduction catalytic converters (NSRC) have been developed to lower the emissions of nitrogen oxides (NOx) from economical lean-burn gasoline and diesel engines. In the course of longer lean period, NOx are stored on the surface under theexcess of oxygen. Then they are reduced within the short enrichment phase by the excess of components resulting from the rich fuel injection (CO, H2 and hydrocarbons). Multiphase, spatially pseudo-2D mathematical model has been developed to study the mass transport effects in the NSR catalytic monolith reactors. It includes the description of external mass transfer from the bulk gas to the pores of the catalytic layer (washcoat) and internal diffusion and reactions in the porous structures of the catalyst, with surface deposition of chosen components (oxygen and NOx storage). The simulation results of periodic lean/rich operation of NSR converter are presented and mass transport effects and their limitations are discussed. The influence

Název v anglickém jazyce

Mass transfer effects in modelling of catalytic monolith converter with NOx storage

Popis výsledku anglicky

NOx storage and reduction catalytic converters (NSRC) have been developed to lower the emissions of nitrogen oxides (NOx) from economical lean-burn gasoline and diesel engines. In the course of longer lean period, NOx are stored on the surface under theexcess of oxygen. Then they are reduced within the short enrichment phase by the excess of components resulting from the rich fuel injection (CO, H2 and hydrocarbons). Multiphase, spatially pseudo-2D mathematical model has been developed to study the mass transport effects in the NSR catalytic monolith reactors. It includes the description of external mass transfer from the bulk gas to the pores of the catalytic layer (washcoat) and internal diffusion and reactions in the porous structures of the catalyst, with surface deposition of chosen components (oxygen and NOx storage). The simulation results of periodic lean/rich operation of NSR converter are presented and mass transport effects and their limitations are discussed. The influence

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%2F02%2F0339" target="_blank" >GA104/02/0339: Nestacionární chování mikroreaktorů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2002

Kód důvěrnosti údajů

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

Název statě ve sborníku

15th Int. Congress of Chem. and Process Engng - CHISA, Prague 25.- 29. 8. 2002, CD-ROM

ISBN

80-86059-33-2

ISSN

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e-ISSN

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Počet stran výsledku

9

Strana od-do

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Název nakladatele

Česká společnost chemického a procesního inženýrství

Místo vydání

Praha

Místo konání akce

Praha

Datum konání akce

25. 8. 2002

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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