| Autor: |
Kyung Yul Chung, Kun Woo Ku, Jung Goo Hong, Hyun Jin Yoon, Ji Kwon Seok |
| Rok vydání: |
2015 |
| Předmět: |
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| Zdroj: |
Journal of ILASS-Korea. 20:162-167 |
| ISSN: |
1226-2277 |
| DOI: |
10.15435/jilasskr.2015.20.3.162 |
| Popis: |
Recently, there has been rising interest in applying urea-SCR systems to large marine diesel engines because the International Maritime Organization (IMO) has decided to enforce NOx reduction regulations. Generally, in the case of urea-SCR of the marine diesel engine, a type of twin fluid atomizer has been using for injection of the urea solution. This study conducted to investigate an effect of the atomization of external-mixing twin fluid nozzle on the conversion efficiency of reductant. The lab-scaled experiment device was installed to mimic the urea-SCR system of the marine diesel engine for this study. In a low temperature inflow gas condition which is similar with the exhaust temperature of large marine diesel engine, this study found that the conversion efficiency of reductant of when relative big size urea solution droplets are injected into exhaust gas stream can be larger than that of when small size urea solution droplets are injected. According to results of this study, the reason was associated with decrease of reaction rate constant caused from temperature drop of inflow gas by assist air of twin fluid atomizer. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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