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전성민,이강산,이재랑,김광득,박영옥,Jeon, Seong-Min,Hasolli, Naim,Lee, Kang-San,Lee, Jea-Rang,Kim, Kwang-Deuk,Park, Young-Ok Korean Society for Atmospheric Environment 2016 한국대기환경학회지 Vol.14 No.5
In this study, two kinds of industrial filter bags were tested for their filtration performance to apply the existing bag filter systems. Experimental variables were examined for pressure drop, cleaning interval, residual pressure drop, cleaning efficiency, fractional grade efficiency, total collection efficiency according to the filter bag structure. According to these results, the filter bags tested in this study demonstrated good performance in dust collection. This was also true for the double surface filter bag. The lifetime was longer than the round type filter bag because the filtration area was more than 1.6 times wider and the filter quality factor was much higher. Therefore, double surface filter bags are suggested to be used in order to increase filtration performance of the bag filter systems.
NiO/MoO<sub>3</sub>/MoS<sub>2</sub>의 공탑속도에 따른 유동화 특성
이재랑,전성민,이강산,이관영,김광득,박영옥,Lee, Jae-Rang,Hasolli, Naim,Jeon, Seong-Min,Lee, Kang-San,Lee, Kwan-Young,Kim, Kwang-Deuk,Park, Young-Ok 한국입자에어로졸학회 2017 Particle and Aerosol Research Vol.13 No.2
실험실 규모의 유동층 반응기(Length=0.25m, Diameter=0.05m)에서 고부가가치 물질인 희유금속 산화물 $NiO/MoO_3/MoS_2$의 공탑속도에 따른 최소유동화 속도 및 압력손실 경향을 확인하였다. 시료의 L/D 1, 2, 3 변화에 따른 Superficial gas velocity 0.07~0.45 m/s 범위에서 $NiO/MoO_3/MoS_2$의 L/D 1, 2, 3에서의 평균 압력손실은 Decreasing flux에서 290~1952 Pa, Increasing flux에서 253~1925 Pa로 나타났다. Wen이 제시한 이론값과 실험데이터를 비교해본 결과, 0.021~0.36배 차이나는 것을 확인하였다. 이번 결과를 통하여, 희유금속 산화물을 실제 현상에서 적용 가능한 운전조건을 결정할 수 있었다. This study identified the loss of minimum fluidization velocity and pressure in accordance with the superficial velocity of $NiO/MoO_3/MoS_2$, a rare metallic oxide and high value-added material in the lab-scale fluidized bed reactor (L=0.25 m, D=0.05 m). The average pressure loss in L/D 1, 2, and 3 of $NiO/MoO_3/MoS_2$ within the scope of superficial gas velocity between 0.07 and 0.45 m/s based on the L/D 1, 2, and 3 of the specimen was shown to be 290~1952 Pa at decreasing flux and 253~1925 Pa at increasing flux. The comparison between the theoretical value proposed by Wen and the test data showed a difference between 0.021~0.36 magnification. Based on these results, this study was able to determine the operation conditions where rare metallic oxides could be applied in real phenomena.
입자상물질과 VOCs 동시제거 실증장치에서 자동차 페인트 부스 발생 paint aerosol과 VOCs의 동시제거 성능 특성
이재랑,전성민,이강산,김광득,박영옥,Lee, Jae-Rang,Hasolli, Naim,Jeon, Seong-Min,Lee, Kang-San,Kim, Kwang-Deuk,Park, Young-Ok 한국입자에어로졸학회 2016 Particle and Aerosol Research Vol.12 No.4
The purpose of this study is to determine the performance characteristics of the paint particulate and volatile organic compounds(VOCs) simultaneous removal from the spraying paint booth in the laboratory and real site by sticky paint particulate and VOCs simultaneous removal demonstration unit. The sticky paint particulate and VOCs simultaneous removal unit is composed of the horizontal type pleated filter modules and the zig-zag type granular activated carbon packing modules. The test conditions at the laboratory are $50.15g/m^3$ of average paint aerosol concentration and 300 ppm of VOCs concentration which were same as the working conditions of spraying paint booth in the real site. But, the demonstration conditions at the real site are varied according to the working condition of spraying paint booth for the kind of passenger car bodies. The test results at the laboratory obtained that 99% of total particulate collection efficiency at 0.62 m/min of filtration velocity and 84% at 1.77 m/min of filtration velocity. The VOCs removal efficiencies are 97% at $3500hr^{-1}$ of gas hour space velocity and 59% at $10,000hr^{-1}$ of gas hour space velocity. In the real site test, the average removal efficiency of PM10 was measured to be 99.65%, the average removal efficiency of PM2.5 was 99.38%, the average removal efficiency of PM1 was 98.52%, and the average removal efficiency of VOCs was 89%.