Provided are an exhaust gas recirculation and boiler water supply heating system, and a boiler water supply heating method using exhaust gas. According to an embodiment of the present invention, the exhaust gas recirculation and boiler water supply heating system comprises: an exhaust gas recirculation device for reducing the amount of nitrogen oxide generated by combustion by supplying at least a part of exhaust gas discharged from an engine to a suction part of the engine; a boiler for producing steam; and a water supply part including a water supply tank for storing supplied water for steam production, and a water supply pump for supplying supplied water stored in the water supply tank to the boiler for steam production. The exhaust gas recirculation device comprises: a heat exchange unit which exchanges heat of exhaust gas with supplied water stored in the water supply tank to heat the supplied water stored in the water supply tank so as to reduce oxygen concentration included in the supplied water and at the same time to cool the exhaust gas. According to an embodiment of the present invention, exhaust gas cooling and supplied water heating effects can be simultaneously obtained by heat exchange between exhaust gas discharged from an engine and supplied to an exhaust gas recirculation device and boiler supplied water. It is possible to reduce oxygen in the supplied water by heating supplied water to be supplied to the boiler to generate steam by using thermal energy of exhaust gas discharged from the engine. Moreover, the exhaust gas can be cooled without having a separate cooler in the exhaust gas recirculation device.
배기가스 재순환 및 보일러 급수가열 시스템, 배기가스를 이용한 보일러 급수가열 방법이 제공된다. 본 발명의 실시 예에 따른 배기가스 재순환 및 보일러 급수가열 시스템은 엔진에서 배출되는 배기가스의 적어도 일부를 엔진의 흡기부로 되돌려 공급함으로써 연소에 의한 질소산화물의 발생량을 줄이는 배기가스 재순환 장치; 증기를 생산하는 보일러; 및 증기 생산을 위한 급수를 저장하는 급수 탱크와, 증기 생산을 위해 급수 탱크에 저장된 급수를 보일러로 공급하는 급수 펌프를 포함하는 급수 공급부를 포함한다. 배기가스 재순환 장치는, 배기가스를 급수 탱크에 저장된 급수와 열교환시킴으로써 급수 탱크에 저장된 급수를 가열시켜 급수에 포함된 산소 농도를 줄이는 동시에 배기가스를 냉각시키는 열교환부를 포함한다. 본 발명의 실시 예에 의하면, 엔진에서 배출되어 배기가스 재순환 장치로 공급된 배기가스와 보일러 급수 간의 열교환에 의해 배기가스 냉각 및 급수 가열 효과를 동시에 얻을 수 있으며, 엔진에서 배출되는 배기가스의 열에너지를 이용하여 증기 생성을 위해 보일러로 공급될 급수를 가열하여 급수 내의 산소를 줄일 수 있다. 또한 배기가스 재순환 장치 내에 별도의 냉각기를 구비할 필요가 없이 배기가스를 냉각시킬 수 있다.
EXHAUST GAS RECIRCULATION AND BOILER SYSTEM METHOD OF HEATING BOILER FEED WATER USING EXHAUST GAS
배기가스 재순환 및 보일러 급수가열 시스템, 배기가스를 이용한 보일러 급수가열 방법
2018-04-04
Patent
Elektronische Ressource
Koreanisch
IPC: | B63J Hilfsanlagen auf Schiffen , AUXILIARIES ON VESSELS / 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 / F02M Zuführen von Brennstoff-Luft-Gemischen oder deren Bestandteilen bei Brennkraftmaschinen allgemein , SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF / F28D Wärmetauscher, soweit in keiner anderen Unterklasse vorgesehen, in denen die Wärmetauschmittel nicht in direkte Berührung miteinander kommen , HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT |
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