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

    SeriesProceedings of the Air and Waste Management Association's Annual Conference and Exhibition, AWMA
    ISSN1052-6102

    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).
    @inproceedings{614d491e77ea417eb513fe999e63e785,
    title = "Controlling emissions of natural gas engines",
    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.",
    author = "Kati Lehtoranta and Timo Murtonen and Hannu Vesala and P{\"a}ivi Koponen and Jenni Alanen and Niina Kuittinen and Pauli Simonen and Topi R{\"o}nkk{\"o} and Sanna Saarikoski and Hilkka Timonen and Teuvo Maunula and Kauko Kallinen and Satu Korhonen",
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    publisher = "Air and Waste Management Association",
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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 - Lehtoranta, Kati

    AU - Murtonen, Timo

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    AU - Koponen, Päivi

    AU - Alanen, Jenni

    AU - Kuittinen, Niina

    AU - Simonen, Pauli

    AU - Rönkkö, Topi

    AU - Saarikoski, Sanna

    AU - Timonen, Hilkka

    AU - Maunula, Teuvo

    AU - Kallinen, Kauko

    AU - Korhonen, Satu

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    N2 - 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.

    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).