Reduction of natural gas engine emissions using catalysts

Kati Lehtoranta, Hannu Vesala, Timo Murtonen, Jenni Alanen, Mia Isotalo, Sampsa Martikainen, Topi Rönkkö, Sanna Saarikoski

Research output: Contribution to conferenceConference articleScientific

Abstract

In order to diminish the environmental and health effects and to comply with tightening emission limits, exhaust after-treatment systems are going to be increasingly utilized also in the natural gas engine applications. In this work, we study both oxidation catalyst and se-lective catalytic reduction systems to solve how the catalysts influence on e.g. hydrocar-bons, NOx and particles existing in natural gas engine exhaust. A passenger car engine modified to run with natural gas was used in a laboratory research facility equipped with a possibility to modify the exhaust gas properties. In addition, the role of lubricating oil on the emission formation was also studied. When using selective catalytic reduction, high NOx reductions were observed. To oxidize methane a highly efficient oxidation catalyst was needed while other hydrocarbons were more easily oxidized. Catalyst systems were found to have significant effects on particulate emission also. Especially at high exhaust tem-peratures, high nanoparticle concentrations were observed downstream of the catalysts. Changing the lubricating oil was also found to have an effect on the particle emission.
Original languageEnglish
Publication statusPublished - 2019
MoE publication typeNot Eligible
Event12th Dessau Gas Engine Conference - Dessau-Rosslau, Germany
Duration: 11 Apr 201912 Apr 2019
https://www.wtz.de/gasmotorenkonferenz/en/

Conference

Conference12th Dessau Gas Engine Conference
CountryGermany
CityDessau-Rosslau
Period11/04/1912/04/19
Internet address

Fingerprint

Gas engines
Natural gas
Catalysts
Lubricating oils
Oxidation
Particulate emissions
Exhaust systems (engine)
Selective catalytic reduction
Passenger cars
Research laboratories
Exhaust gases
Methane
Hydrocarbons
Health
Nanoparticles
Engines

Cite this

Lehtoranta, K., Vesala, H., Murtonen, T., Alanen, J., Isotalo, M., Martikainen, S., ... Saarikoski, S. (2019). Reduction of natural gas engine emissions using catalysts. Paper presented at 12th Dessau Gas Engine Conference , Dessau-Rosslau, Germany.
Lehtoranta, Kati ; Vesala, Hannu ; Murtonen, Timo ; Alanen, Jenni ; Isotalo, Mia ; Martikainen, Sampsa ; Rönkkö, Topi ; Saarikoski, Sanna. / Reduction of natural gas engine emissions using catalysts. Paper presented at 12th Dessau Gas Engine Conference , Dessau-Rosslau, Germany.
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Lehtoranta, K, Vesala, H, Murtonen, T, Alanen, J, Isotalo, M, Martikainen, S, Rönkkö, T & Saarikoski, S 2019, 'Reduction of natural gas engine emissions using catalysts' Paper presented at 12th Dessau Gas Engine Conference , Dessau-Rosslau, Germany, 11/04/19 - 12/04/19, .

Reduction of natural gas engine emissions using catalysts. / Lehtoranta, Kati; Vesala, Hannu; Murtonen, Timo; Alanen, Jenni; Isotalo, Mia; Martikainen, Sampsa ; Rönkkö, Topi; Saarikoski, Sanna.

2019. Paper presented at 12th Dessau Gas Engine Conference , Dessau-Rosslau, Germany.

Research output: Contribution to conferenceConference articleScientific

TY - CONF

T1 - Reduction of natural gas engine emissions using catalysts

AU - Lehtoranta, Kati

AU - Vesala, Hannu

AU - Murtonen, Timo

AU - Alanen, Jenni

AU - Isotalo, Mia

AU - Martikainen, Sampsa

AU - Rönkkö, Topi

AU - Saarikoski, Sanna

PY - 2019

Y1 - 2019

N2 - In order to diminish the environmental and health effects and to comply with tightening emission limits, exhaust after-treatment systems are going to be increasingly utilized also in the natural gas engine applications. In this work, we study both oxidation catalyst and se-lective catalytic reduction systems to solve how the catalysts influence on e.g. hydrocar-bons, NOx and particles existing in natural gas engine exhaust. A passenger car engine modified to run with natural gas was used in a laboratory research facility equipped with a possibility to modify the exhaust gas properties. In addition, the role of lubricating oil on the emission formation was also studied. When using selective catalytic reduction, high NOx reductions were observed. To oxidize methane a highly efficient oxidation catalyst was needed while other hydrocarbons were more easily oxidized. Catalyst systems were found to have significant effects on particulate emission also. Especially at high exhaust tem-peratures, high nanoparticle concentrations were observed downstream of the catalysts. Changing the lubricating oil was also found to have an effect on the particle emission.

AB - In order to diminish the environmental and health effects and to comply with tightening emission limits, exhaust after-treatment systems are going to be increasingly utilized also in the natural gas engine applications. In this work, we study both oxidation catalyst and se-lective catalytic reduction systems to solve how the catalysts influence on e.g. hydrocar-bons, NOx and particles existing in natural gas engine exhaust. A passenger car engine modified to run with natural gas was used in a laboratory research facility equipped with a possibility to modify the exhaust gas properties. In addition, the role of lubricating oil on the emission formation was also studied. When using selective catalytic reduction, high NOx reductions were observed. To oxidize methane a highly efficient oxidation catalyst was needed while other hydrocarbons were more easily oxidized. Catalyst systems were found to have significant effects on particulate emission also. Especially at high exhaust tem-peratures, high nanoparticle concentrations were observed downstream of the catalysts. Changing the lubricating oil was also found to have an effect on the particle emission.

M3 - Conference article

ER -

Lehtoranta K, Vesala H, Murtonen T, Alanen J, Isotalo M, Martikainen S et al. Reduction of natural gas engine emissions using catalysts. 2019. Paper presented at 12th Dessau Gas Engine Conference , Dessau-Rosslau, Germany.