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Numerical investigation of wall film formation for SCR applications (CROSBI ID 602242)

Prilog sa skupa u zborniku | sažetak izlaganja sa skupa

Baleta, Jakov ; Vujanović, Milan ; Pachler, Klaus ; Reinhard, Tatschl Numerical investigation of wall film formation for SCR applications // 17th ERCOFTAC (European Research Community on Flow, Turbulence and Combustion) Alpe Danube Adria Pilot-Center Meeting, 2013.. 2013

Podaci o odgovornosti

Baleta, Jakov ; Vujanović, Milan ; Pachler, Klaus ; Reinhard, Tatschl

engleski

Numerical investigation of wall film formation for SCR applications

Engine-related measures, such as exhaust gas recirculation, are not sufficient for the fulfillment of the legally prescribed limits for NOx any more, especially for diesel vehicles. The urea-water-solution (UWS) based selective catalytic reduction (SCR) is most promising method to control NOx emissions from diesel engines. Once urea-water-solution spray is injected into hot exhaust gas stream before SCR catalyst, water content evaporates from UWS. Afterwards, ammonia is generated through thermal decomposition of urea and hydrolysis of isocyanic acid. Generated ammonia takes part in various deNOx reactions as a reductant. The resulting spatial distribution of the reducing agent upstream to the catalyst is a crucial factor for the conversion of NOx. The uniform distribution and the degree of processing of the reducing agent upstream of the SCR catalyst, besides the evaporation and decomposition, can also be influenced by the spray/wall interaction.

gas aftertreatment; selective catalytic reduction; wallfilm; urea water solution; NOx reduction; computational fluid dynamics

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Podaci o prilogu

2013.

objavljeno

Podaci o matičnoj publikaciji

17th ERCOFTAC (European Research Community on Flow, Turbulence and Combustion) Alpe Danube Adria Pilot-Center Meeting, 2013.

Podaci o skupu

17th ERCOFTAC Alpe Danube Adria Pilot-Center Meeting,

predavanje

03.05.2013-03.05.2013

Graz, Austrija

Povezanost rada

Strojarstvo