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Selektiv katalytisk avgasrening till sjöss: Svårigheter, lösningar samt erfarenheter från drift och underhåll av marina SCR-system
Linnaeus University, Faculty of Engineering and Technology, Kalmar Maritime Academy.
Linnaeus University, Faculty of Engineering and Technology, Kalmar Maritime Academy.
2013 (Swedish)Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesis
Abstract [sv]

Denna studie har sammanställt kunskap och erfarenhet från drift av SCR-anläggningar påfartyg med syftet att fastställa de huvudsakliga orsakerna bakom problem som uppstår ikatalysatoranläggningar inom Nord- och Östersjöfarten. Undersökningen utfördes meden kvalitativ intervjumetod. För att få en bra täckning riktade sig undersökningen motbåde rederier och fartyg med erfarenhet av SCR, samt tillverkare av systemen.Intervjuerna utfördes per telefon och analyserades sedan mot frågeställningarna. Iresultatet framkom att ett stort antal anläggningar genomgått modifieringar eftersomproblem uppstått. Ett antal vanligt förekommande problem identifierades. Någrakomponenter är särskilt kritiska att designa och dimensionera, såsom utrusning förureainjicering och magnetventiler för sotblåsning. Vidare framkom att avgastemperatursåväl som bränslet och ureans kvalité var viktiga faktorer för att uppnå god prestandaoch livslängd. Studien visar även att ökad kompetens krävs både hos befintlig ochblivande maskinpersonal för att underhållsåtgärder ska ske på rätt sätt och i rätt tid. Föratt möta eventuella framtida behov av SCR kombinerat med scrubberteknik krävs fortsattteknikutveckling.

Abstract [en]

The objective of the project was to compile knowledge and experience from the operationof SCR-installations on vessels in order to determine the main causes behind theproblems that arise in the catalyst systems within North- and Baltic Sea shipping. Thestudy was performed as a qualitative interview method. In order to get a good coverage,the study was directed against both companies and ships with experience of SCR andmanufacturers of systems. The interviews were conducted by telephone, and thenanalyzed against the objective. The result showed that a large number of plants haveundergone modifications since problems has occurred. A number of common problemswere identified. The study identified some components that are particularly critical todesign and dimension, such as equipment for urea injection and solenoid valves for sootblowing. It was also found that the exhaust temperature as well as fuel and urea qualitywere important factors in achieving good performance and lifetime. Increasedcompetence is required from both existing and future engine personnel so thatmaintenance can be done the right way and at the right time. To meet future demands ofSCR combined with scrubber technique further technical development is required.

Place, publisher, year, edition, pages
2013. , 69 p.
Keyword [en]
SCR, NOX, catalyst, emission
Keyword [sv]
SCR, NOx, Katalysator, avgasrening
National Category
Other Mechanical Engineering
Identifiers
URN: urn:nbn:se:lnu:diva-25740OAI: oai:DiVA.org:lnu-25740DiVA: diva2:622445
Subject / course
Chief Engineer
Educational program
Marine Engineering Programme (4 years) with onboard practical training placement, 180 credits
Supervisors
Examiners
Available from: 2013-05-22 Created: 2013-05-21 Last updated: 2013-05-22Bibliographically approved

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Selektiv katalytisk avgasrening till sjöss(1043 kB)498 downloads
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