System for Reducing the NOx emissions in the Exhaust Gases of Low speed Diesel Engine

摘要

PURPOSE: A system for reducing nitrogen oxide of low speed diesel engine exhaust gas is provided to prevent catalyst poisoning by sulfur compound. CONSTITUTION: A system for reducing nitrogen oxide of low speed diesel engine exhaust gas comprises a turbocharger(110), and a plurality of selective reduction catalyst reactors(150). A plurality of selective reduction catalyst reactors reduces the nitric oxide contained in the exhaust gas by supplying a reducing agent to the exhaust gas exhausted through the turbocharger. A plurality of selective reduction catalyst reactors alternates and starts operation.