Sea water injection
exhaust gas cooling
exhaust gas cooling
At wet exhaust gas systems, the sea water is used to cool the exhaust gas, for reducing emission of harmful components to the atmosphere and to increase safety onboard the vessels. Further, because of cooling the exhaust gas, the volume of the exhaust gas to be handled is considerably reduced, and hence the systems are more compact and lighter when compared to conventional exhaust gas systems. In the Navy/Defence application it also significantly enhances the stealth characteristics of the vessel for the infrared radars due to reduction of thermal emission of the unit. Thus, at our systems downstream from the SCR Reactor/Dry Silencer/Dry exhaust piping, in the sea water injector, the sea water is injected through dedicated several nozzles into the exhaust gas, and the exhaust gas is quenched to approximately 60°C.
Advanced Sea water injector
with flow regulation valve for secondary injection nozzle/s
Standard Sea water injector
Design of sea water injector
The injector sizing as well as amount and type of applied spray nozzles is performed based on engine’s data sheet with respect to given exhaust gas volume/mass flow as well as exhaust gas temperature. Base on those values the relevant size of the injector is considered as well as configuration of spray nozzles to secure proper mixing and then cooling of exhaust gas down to 60°C
