舶用ディーゼルエンジンから排出される排ガス中に含まれる粒子状物質及び硫黄酸化物を確実に除去することができる舶用ディーゼルエンジン排ガス処理システムを提供する。舶用ディーゼルエンジンから出力される排ガス中のPMを補集する電気集塵装置(7)と、該電気集塵装置でPMが除去された排ガスに海水を噴霧してSOxを除去する海水スクラバ(9)と、前記電気集塵装置及び前記海水スクラバによる処理後の排ガス成分を検出する排ガス成分検出部(LA3)と、前記海水スクラバで噴霧された海水を回収して成分調整を行う海水成分調整部(9C)と、該海水成分調整部で成分調整した海水を前記海水スクラバに戻す海水循環部(9D)と、排ガス成分検出部で検出した排ガスの残留成分が規定範囲内となるように前記電気集塵装置及び海水スクラバの稼働状態を調整する排ガス処理制御部とを備えている。

    Provided is a marine diesel engine exhaust gas treatment system capable of reliably removing a particulate matter and sulfur oxides contained in exhaust gas emitted from a marine diesel engine. The marine diesel engine exhaust gas treatment system includes: an electrostatic precipitator apparatus (7) that collects a PM of exhaust gas emitted from the marine diesel engine; a seawater scrubber (9) that sprays seawater to the exhaust gas from which the PM is removed by the electrostatic precipitator apparatus, to remove SOx from the exhaust gas; an exhaust gas component detector (LA3) that detects a component of the exhaust gas treated by the electrostatic precipitator apparatus and the seawater scrubber; a seawater component regulator (9C) that recovers the seawater sprayed by the seawater scrubber, to perform component regulation on the recovered seawater; a seawater circulator (9D) that returns, to the seawater scrubber, the seawater that is subjected to the component regulation by the seawater component regulator; and an exhaust gas treatment controller that regulates an operating state of the electrostatic precipitator apparatus and an operating state of the seawater scrubber in such a manner that a component remaining in the exhaust gas that is detected by the exhaust gas component detector falls within a prescribed range.


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    Title :

    舶用ディーゼルエンジン排ガス処理システム


    Publication date :

    2017-01-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    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 / B03C Magnetische oder elektrostatische Trennung fester Stoffe von festen Stoffen oder flüssigen oder gasförmigen Medien , MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS / B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / B63J Hilfsanlagen auf Schiffen , AUXILIARIES ON VESSELS