Numerical Study On Urea Spraying And Mixing Characteristics With Application Of Static Mixer In Marine Scr System
TRANSACTIONS OF THE KOREAN SOCIETY OF MECHANICAL ENGINEERS B(2016)
Abstract
Among various De-NOx technologies, Urea-based Selective Catalytic Reduction (SCR) systems are known to be the most effective in marine diesel applications. The spraying and mixing behavior of the urea-water solution has a decisive effect on the system's net efficiency. Therefore, in this study, the spray behavior and ammonia uniformity with and without a static mixer were analyzed by CFD in order to optimize the SCR system. The results showed that the static mixer significantly affected the uniformity of velocity and ammonia concentration. Static mixers may be especially suited for marine SCR systems with space constraints.
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Key words
Thermolysis, Hydrolysis, Uniformity Index
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