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박용디젤기관의 대기오염 저감을 위한 습식 회전형 다공성 디스크 시스템의 집진특성
여석준 ( Seok Jun Yoa ),장창익 ( Chang Ik Jang ) 한국어업기술학회 2014 수산해양기술연구 Vol.50 No.3
The main object of this study is to investigate the collection characteristics of wet-type rotating porous disk system experimentally. The experiment is carried out to analyze the pressure drop and collection efficiency for the present system with the experimental parameters such as system inlet velocity, stage number, tube diameter, inlet concentration, etc. In results, for the present system, at 5 stage and uin〓1.8 m/s, the pressure drop becomes significantly lower as 64 mmH2O in comparison with that of the conventional wet type scrubber (Venturi scrubber, over 250 mmH2O). The collection efficiencies increase with higher inlet velocity showing 92, 95.7, 98.4%, while SO2 removal efficiencies decrease with increment of inlet velocity as 80, 65, 50% at uin〓1.08, 1.44, 1.8 m/s and tube diameter Dt〓10 mm, respectively. The present system is to be considered as an effective compact system for a simultaneous removal of particle/gas phase pollutants from marine diesel engines.
박용디젤기관의 대기오염 저감을 위한 습식 다단 임팩션 시스템의 집진특성
여석준 ( Seok-jun Yoa ),권준형 ( Jun-hyeong Kwon ) 한국어업기술학회 2016 수산해양기술연구 Vol.52 No.3
The main purpose of this paper was to analyze the removal characteristics of gas/particulate phase pollutants for the present system. Experimentally, we performed to estimate the pressure drop and air pollution removal efficiency with physical variables such as stage number, tube velocity, tube diameter, water spray (NH4OH), and so on. It was concluded that the pressure drop was shown below 111 mmH2O lower than that of the existing scrubber (centrifugal spray chamber, over 200 mmAq) at inlet velocity 3.46 m/s and 5 stage. The particular removal efficiency of this system was to be significantly higher at 99.8% in comparison with that of the existing scrubber for 5 stage, inlet velocity 3.46 m/s and NH4OH (aq) 300 mL/min. It was estimated that the removal efficiencies of SO2 and NO2 were 80% and 70% at system inlet velocity 2.07 m/s and NH4OH (aq) 300 mL/min respectively. Additionally, the present collection system was to be considered as an effective compact system for simultaneous removal of air pollutants (gas/particulate) due to much higher removal efficiency and appropriate pressure drop without a demister.
박용디젤기관의 대기오염 저감을 위한 전기 다단 임팩션 시스템의 집진특성
여석준 ( Seok Jun Yoa ),권준형 ( Jun Hyeong Kwon ) 한국어업기술학회 2015 수산해양기술연구 Vol.51 No.4
The main object of this study is to investigate the collection characteristics of an electro-static multi-staged impaction system, experimentally. The experiment is carried out to analyze the characteristics of pressure drop and collection efficiency for the present system with the experimental parameters such as the inlet velocity, stage number, applied voltage and shape of discharge electrode, etc. In results, the pressure drop is shown below 148 mmH2O lower than that of the conventional bag filter at inlet velocity 3.46 m/s and 5 stage. For 5 stage , the collection efficiencies are to be 97.4, 99.0% with the applied voltage 0 kV at the inlet velocity 2.07, 3.46 m/s, while 98.4, 99.9% with 40 kV of a sharp edge discharge electrode. Additionally, the present system is to be considered as an effective compact system for a removal of particulate pollutants from marine diesel engines due to much higher collection efficiency and appropriate pressure drop.
선박 대기오염 저감을 위한 벽면 캐비티 적용 습식 사이클론의 집진특성
여석준 ( Seok Jun Yoa ),권준형 ( Jun Hyeong Kwon ) 한국어업기술학회 2014 수산해양기술연구 Vol.50 No.2
The main object of this study was to investigate the collection characteristics of wet-type cyclone with wall cavity. The experiment was executed to analyze the characteristics of pressure drop and collection efficiency for the present system with the experimental parameters such as water spray, water spray type, inlet velocity etc. In results, for the present system of wet-type, the pressure drop represented 35 mmH2O, while in dry-type 33 mmH2O showing lower 6% at =21 m/s. In case of =21 m/s and water spray 200 mL/min, the collection efficiency of the present system became significantly higher as 96.8% comparing to that of the conventional wet-type scrubber. Additionally, for 200 mL/min, SO2 removal efficiencies decreased with the increment of inlet velocity representing 75.0, 62.5, 50.0%, at =6, 9, 12 m/s, respectively.