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

Result code in 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>

Result on the web

<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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Result language

angličtina

Original language name

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

Original language description

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.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20401 - Chemical engineering (plants, products)

Project

<a href="/en/project/GA19-22173S" target="_blank" >GA19-22173S: Microstructure of catalytic filters for automotive exhaust gas aftertreatment</a><br>

Continuities

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

Publication year

2019

Confidentiality

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

Article name in the collection

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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Number of pages

16

Pages from-to

1-16

Publisher name

Slovak Society of Chemical Engineering

Place of publication

Bratislava

Event location

Tatranské Matliare

Event date

May 20, 2019

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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