Scr Exhaust Treatment System

Selective catalytic reduction system.

Scr exhaust treatment system.

For its latest pilot boat luna the dutch pilot association dpa has entrusted two man d2862 le469 engines with modular exhaust gas aftertreatment eat from man engines. The present invention is directed towards methods and systems for treatment of exhaust gas from an engine. This engine is used by the bs6 scorpio and xuv500 while the new thar should see it as well. Exhaust throttling generally produces less bsfc penalty than the pre compressor intake throttling.

Scr technology is an effective reliable solution that reduces nox emissions and enables enhanced fuel economy. Using a combination of physical mechanisms and chemical reactions these systems can under the right conditions achieve near complete removal of particulates. The exhaust aftertreatment system also consists of two parts designed to increase exhaust temperature for proper dpf regeneration. Selective catalytic reduction scr is a means of converting nitrogen oxides also referred to as no x with the aid of a catalyst into diatomic nitrogen n 2 and water h 2 o a reductant typically anhydrous ammonia aqueous ammonia or urea solution is added to a stream of flue or exhaust gas and is adsorbed citation needed onto a catalyst as the reaction drives toward completion carbon.

Scr gas exhaust treatment scr technology for reducing nox emissions selective catalytic reduction scr is a method used to reduce the level of nitrogen oxides nox with the help of a catalyst. An scr system is typically composed of three main elements. In one embodiment an exhaust gas treatment system for a diesel engine is provided. The system includes a urea selective catalytic reduction u scr catalyst in fluid communication with a diesel engine to receive an exhaust gas flow therefrom.

However any throttle valves placed in any part of the engine air system increase bsfc. Compact scr system for the luna pilot vessel satisfies imo tier iii. Scr systems are virtually maintenance free with occasional dosing system filter upkeep depending on the application. The aftertreatment fuel injector afi mounted on the exit pipe from the turbocharger injects diesel fuel into the exhaust stream during a regeneration cycle.