A stand-alone retrofit urea-SCR after-treatment system has been developed employing a pre-SCR NOx sensor, exhaust flow measurement, wire mesh mixer, clean-up catalyst, open-loop feed-forward control and stoichiometric NOx reduction logic. Demonstration of the urea-SCR system on a 1991 Detroit Diesel Corporation 12L engine in a West Virginia University (WVU) transient test cell achieved a 50% weighted NOx reduction and zero ammonia slip over the ICOMIA E5 marine cycle. The cost-effectiveness of the urea-SCR system was determined, including a $50 000 capital cost and $2705/t NOx reduced annually, which is consistent with Carl Moyer program estimates.


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    Titel :

    Demonstration and evaluation of a retrofit urea-SCR after-treatment system for NOx reduction in marine diesels


    Beteiligte:
    Bedick, C R (Autor:in) / Clark, N N (Autor:in) / Johnson, D R (Autor:in) / Balon, T HJr (Autor:in) / Moynihan, P J (Autor:in) / Bradley, M J (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2011-01-01


    Format / Umfang :

    11 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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