A master thesis from Aalborg University
Evaluation of Selective Catalytic Reduction for Marine Two Stroke Diesel Engines
Author(s)
Term
4. term
Education
Publication year
2010
Submitted on
2010-12-10
Pages
131 pages
Abstract
Due to an increased emphasis on the reduction of emissions from commercial cargo ships, there has been increased interest in applying emissions reduction technology to marine vessels. This paper investigates the application of selective catalytic reduction (SCR) for the purpose of reducing NOx emissions from a large bore slow speed marine diesel engine of the type that would be typical of a PANAMAX containership. Selective catalytic reduction, which relies on a catalyst to promote a reduction reaction between NO and NH3, is is a well established technology that has seen wide application in the shoreside power generation industry, but for which there have been relatively few applications to marine low speed diesel engines. This paper investigates the feasibility of applying a selective catalytic reactor to a large containership propulsion engine by developing a program for sizing SCR units for various applications. The program is evaluated for an MAN K90 MC-C and K98 MC-C engines, and the relevant system parameters such as catalyst dimensions, flow rates, Urea consumption, and NOx reduction profiles are presented.
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