Pressure Drop and Conversion in Catalytic Filters for Automotive Exhaust Gas Aftertreatment

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F19%3A43919760" target="_blank" >RIV/60461373:22340/19:43919760 - isvavai.cz</a>

Výsledek na webu

<a href="http://sschi.chtf.stuba.sk/ssche_conference2019.html" target="_blank" >http://sschi.chtf.stuba.sk/ssche_conference2019.html</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Pressure Drop and Conversion in Catalytic Filters for Automotive Exhaust Gas Aftertreatment

Popis výsledku v původním jazyce

Particulate filters and catalytic converters are devices used for an automotive exhaust gas aftertreatment. While the catalytic converters remove damaging gases, such as CO, NOx or hydrocarbons, by converting them into CO2, H2O and N2, the particulate filters are used for retaining particulates which are composed mostly of carbon. Diesel particulate filters (DPFs) are the regular component of all Diesel vehicles. Nowadays, gasoline particulate filters (GPFs) are becoming common in direct-injected gasoline engines. Particulate filters are usually made of cylindrical monolith with many parallel channels of square cross-section in a honeycomb arrangement. Each channel is alternately plugged at one end by impermeable cement, so that the exhaust fumes are forced to flow through the porous wall from the one channel to another, filtering out the particulates. To make the exhaust system more compact, the catalytic materials can be coated directly into the filter. The advantages of catalytic filters are space, weight and production cost savings. The catalyst can also facilitate soot combustion. However, the distribution of catalytic washcoat needs to be well optimized to meet good filtration efficiency and conversion of pollutants with minimum pressure drop. This work studies an influence of a layer of clogged particulates on the pressure drop of the filter as well as the possibilities of its regeneration by oxidizing the soot. It also studies the dependence of the pressure drop on the washcoat location (either on-wall layer or inside the porous wall). We also present the conversion of pollutants for the sample with the lowest pressure drop.

Název v anglickém jazyce

Pressure Drop and Conversion in Catalytic Filters for Automotive Exhaust Gas Aftertreatment

Popis výsledku anglicky

Particulate filters and catalytic converters are devices used for an automotive exhaust gas aftertreatment. While the catalytic converters remove damaging gases, such as CO, NOx or hydrocarbons, by converting them into CO2, H2O and N2, the particulate filters are used for retaining particulates which are composed mostly of carbon. Diesel particulate filters (DPFs) are the regular component of all Diesel vehicles. Nowadays, gasoline particulate filters (GPFs) are becoming common in direct-injected gasoline engines. Particulate filters are usually made of cylindrical monolith with many parallel channels of square cross-section in a honeycomb arrangement. Each channel is alternately plugged at one end by impermeable cement, so that the exhaust fumes are forced to flow through the porous wall from the one channel to another, filtering out the particulates. To make the exhaust system more compact, the catalytic materials can be coated directly into the filter. The advantages of catalytic filters are space, weight and production cost savings. The catalyst can also facilitate soot combustion. However, the distribution of catalytic washcoat needs to be well optimized to meet good filtration efficiency and conversion of pollutants with minimum pressure drop. This work studies an influence of a layer of clogged particulates on the pressure drop of the filter as well as the possibilities of its regeneration by oxidizing the soot. It also studies the dependence of the pressure drop on the washcoat location (either on-wall layer or inside the porous wall). We also present the conversion of pollutants for the sample with the lowest pressure drop.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20401 - Chemical engineering (plants, products)

Projekt

<a href="/cs/project/GA19-22173S" target="_blank" >GA19-22173S: Mikrostruktura katalytických filtrů pro čištění automobilových výfukových plynů</a><br>

Návaznosti

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

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings 46th International Conference of the Slovak Society of Chemical Engineering

ISBN

978-80-8208-011-0

ISSN

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e-ISSN

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Počet stran výsledku

16

Strana od-do

1-16

Název nakladatele

Slovak Society of Chemical Engineering

Místo vydání

Bratislava

Místo konání akce

Tatranské Matliare

Datum konání akce

20. 5. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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