Controlling emissions of natural gas engines

Kati Lehtoranta, Timo Murtonen, Hannu Vesala, Päivi Koponen, Jenni Alanen, Niina Kuittinen, Pauli Simonen, Topi Rönkkö, Sanna Saarikoski, Hilkka Timonen, Teuvo Maunula, Kauko Kallinen, Satu Korhonen

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

Different selective catalytic reduction (SCR) and oxidation catalyst systems were assessed to study the effects of these catalysts on the NO x, the hydrocarbon and the particle emissions from natural gas engines. High NO x reductions were observed at low ammonia slips. A separate oxidation catalyst was used downstream of the SCR. The NO x reduction efficiency was found to depend on the exhaust gas temperature. The efficiency of a catalyst reactor to remove hydrocarbons was found to depend on the hydrocarbon species, the exhaust temperature as well as the exhaust flow. The total measured PM mass was lower downstream of the catalyst than in the engine exhaust at all temperatures studied. Catalyst systems were found to have significant effects on particulate emissions.

Original languageEnglish
Title of host publicationAir and Waste Management Association's Annual Conference and Exhibition 2017
Subtitle of host publicationAWMA2017
PublisherAir and Waste Management Association
Publication statusPublished - 1 Jan 2017
MoE publication typeA4 Article in a conference publication
Event110th Annual Conference and Exhibition of the Air and Waste Management Association,AWMA ACE 2017: Bridging Environment, Energy and Health - Pittsburgh, United States
Duration: 5 Jun 20178 Jun 2017

Publication series

NameProceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA
ISSN (Print)1052-6102

Conference

Conference110th Annual Conference and Exhibition of the Air and Waste Management Association,AWMA ACE 2017
Abbreviated titleAWMA ACE 2017
CountryUnited States
CityPittsburgh
Period5/06/178/06/17

Fingerprint

Gas engines
natural gas
Natural gas
catalyst
Catalysts
Selective catalytic reduction
Hydrocarbons
hydrocarbon
oxidation
Oxidation
Particulate emissions
Exhaust systems (engine)
temperature
Exhaust gases
Temperature
gas engine
Ammonia
engine
ammonia

Cite this

Lehtoranta, K., Murtonen, T., Vesala, H., Koponen, P., Alanen, J., Kuittinen, N., ... Korhonen, S. (2017). Controlling emissions of natural gas engines. In Air and Waste Management Association's Annual Conference and Exhibition 2017: AWMA2017 Air and Waste Management Association. Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA
Lehtoranta, Kati ; Murtonen, Timo ; Vesala, Hannu ; Koponen, Päivi ; Alanen, Jenni ; Kuittinen, Niina ; Simonen, Pauli ; Rönkkö, Topi ; Saarikoski, Sanna ; Timonen, Hilkka ; Maunula, Teuvo ; Kallinen, Kauko ; Korhonen, Satu. / Controlling emissions of natural gas engines. Air and Waste Management Association's Annual Conference and Exhibition 2017: AWMA2017. Air and Waste Management Association, 2017. (Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA).
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abstract = "Different selective catalytic reduction (SCR) and oxidation catalyst systems were assessed to study the effects of these catalysts on the NO x, the hydrocarbon and the particle emissions from natural gas engines. High NO x reductions were observed at low ammonia slips. A separate oxidation catalyst was used downstream of the SCR. The NO x reduction efficiency was found to depend on the exhaust gas temperature. The efficiency of a catalyst reactor to remove hydrocarbons was found to depend on the hydrocarbon species, the exhaust temperature as well as the exhaust flow. The total measured PM mass was lower downstream of the catalyst than in the engine exhaust at all temperatures studied. Catalyst systems were found to have significant effects on particulate emissions.",
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Lehtoranta, K, Murtonen, T, Vesala, H, Koponen, P, Alanen, J, Kuittinen, N, Simonen, P, Rönkkö, T, Saarikoski, S, Timonen, H, Maunula, T, Kallinen, K & Korhonen, S 2017, Controlling emissions of natural gas engines. in Air and Waste Management Association's Annual Conference and Exhibition 2017: AWMA2017. Air and Waste Management Association, Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA, 110th Annual Conference and Exhibition of the Air and Waste Management Association,AWMA ACE 2017, Pittsburgh, United States, 5/06/17.

Controlling emissions of natural gas engines. / Lehtoranta, Kati; Murtonen, Timo; Vesala, Hannu; Koponen, Päivi; Alanen, Jenni; Kuittinen, Niina; Simonen, Pauli; Rönkkö, Topi; Saarikoski, Sanna; Timonen, Hilkka; Maunula, Teuvo; Kallinen, Kauko; Korhonen, Satu.

Air and Waste Management Association's Annual Conference and Exhibition 2017: AWMA2017. Air and Waste Management Association, 2017. (Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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AU - Saarikoski, Sanna

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AB - Different selective catalytic reduction (SCR) and oxidation catalyst systems were assessed to study the effects of these catalysts on the NO x, the hydrocarbon and the particle emissions from natural gas engines. High NO x reductions were observed at low ammonia slips. A separate oxidation catalyst was used downstream of the SCR. The NO x reduction efficiency was found to depend on the exhaust gas temperature. The efficiency of a catalyst reactor to remove hydrocarbons was found to depend on the hydrocarbon species, the exhaust temperature as well as the exhaust flow. The total measured PM mass was lower downstream of the catalyst than in the engine exhaust at all temperatures studied. Catalyst systems were found to have significant effects on particulate emissions.

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Lehtoranta K, Murtonen T, Vesala H, Koponen P, Alanen J, Kuittinen N et al. Controlling emissions of natural gas engines. In Air and Waste Management Association's Annual Conference and Exhibition 2017: AWMA2017. Air and Waste Management Association. 2017. (Proceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA).