PROBLEM TO BE SOLVED: To efficiently reduce and remove NOx contained in an exhaust gas by efficiently mixing the exhaust gas with a reductant while simplifying a structure in an exhaust emission control system.SOLUTION: In the exhaust emission control system of a vessel 1 in which a switching valve 37 for opening and closing an exhaust passage 30 is disposed in the exhaust passage 30 of an engine 25 mounted to the vessel 1, a mixing fin 98 is provided in a valve body of the switching valve 37 to make a flow of the exhaust gas circulating through the exhaust passage 30 in a state of the switching valve 37 open turbulent.
【課題】排気ガス浄化システムにおいて、構造を簡素化しながら、効率よく排気ガスと還元剤とを混合させ、効率よく排気ガス中のNOxを還元して除去する。【解決手段】本願発明に係る船舶1の排気ガス浄化システムは、船舶1搭載用のエンジン25の排気経路30に、排気経路30を開閉する切換バルブ37を配置している排気ガス浄化システムにおいて、切換バルブ37の弁体に、切換バルブ37の開状態で排気経路30内を流通する排気ガスの流れを乱流にするミキシングフィン98を設けている。【選択図】図16
EXHAUST EMISSION CONTROL SYSTEM FOR VESSEL
船舶の排気ガス浄化システム
2015-10-22
Patent
Electronic Resource
Japanese
IPC: | F01N GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL , Schalldämpfer oder Auspuffvorrichtungen für Gase von Kraft- und Arbeitsmaschinen oder von Kraftmaschinen allgemein / B01D SEPARATION , Trennen / B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING |
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