본 연구는 미세먼지 전구체인 NO, SO2, 휘발성 유기화합물 제거하기 위하여 NO와 SO2를 입자 전환 반응을 통해 제거하는 연구를 수행하였고 또한, 휘발성 ...
본 연구는 미세먼지 전구체인 NO, SO2, 휘발성 유기화합물 제거하기 위하여 NO와 SO2를 입자 전환 반응을 통해 제거하는 연구를 수행하였고 또한, 휘발성 유기화합물을 상온에서 오존 촉매 산화 반응을 통해 제거하는 연구를 진행하였다. 먼저, 여러 반응조건을 변화하며 NO 및 SO2를 각각 입자 전환 반응에서 최적의 조건을 구한 후 혼합 입자전환 실험에 적용하여 NO 및 SO2 제거율, O3 및 NH3 소비율, 입자생성량을 비교하였다. 최적의 NO 입자 전환 반응 조건으로 반응기 온도 : 180℃, O3/NO 비율 : 8, NH3/NO 비율 : 1로 선정되었다. 최적의 SO2 입자 전환 반응 조건으로 NH3/SO2 비율이 1로 선정하였다. 혼합 실험에서 NO 및 SO2 단일 실험에서보다 O3, NH3 소비율이 높아졌으며 SO2 제거율은 단일 실험보다 약 2배 이상 높아지는 것을 확인하였다. 입자생성량은 단일 실험에서보다 약 10배 이상 증가하였다. 수분 10%를 주입하여 실험 진행하였을 때, SO2 제거율이 90% 이상으로 높아졌고 O3, NH3 소비율은 99% 이상을 보였으며 입자생성량도 60mg으로 증가하였다. 이를 바탕으로 적절한 수분의 주입이 입자전환 반응을 더 잘 진행되게 한다는 것을 확인하였다. 그다음, 미세먼지 전구물질 중 하나인 휘발성 유기화합물의 제거하기 위하여 상온에서 오존 촉매 산화 반응 실험을 진행하였다. 휘발성 유기화합물 중 메틸에틸케톤을 제거 대상으로 선정하였으며, 촉매로는 Zeolite Y(80), Mn/Zeolite Y(80), Spent FCC, Mn/Spent FCC, Mn-Cu/Spent FCC를 적용하여 실험을 진행하였다. MEK 제거율, 오존 제거율 및 COx 생성량을 비교한 결과, Mn-Cu/Spent FCC가 오존 촉매 산화 반응에서 촉매 활성이 높았으며, 장시간 MEK 제거효율도 가장 높은 효율을 유지하였다. 이를 바탕으로 폐 FCC 촉매가 전이금속을 담지 후 오존 촉매 산화 반응 촉매로 활용 가능하다는 것을 확인하였다.
본 연구는 미세먼지 전구체인 NO, SO2, 휘발성 유기화합물 제거하기 위하여 NO와 SO2를 입자 전환 반응을 통해 제거하는 연구를 수행하였고 또한, 휘발성 유기화합물을 상온에서 오존 촉매 산화 반응을 통해 제거하는 연구를 진행하였다. 먼저, 여러 반응조건을 변화하며 NO 및 SO2를 각각 입자 전환 반응에서 최적의 조건을 구한 후 혼합 입자전환 실험에 적용하여 NO 및 SO2 제거율, O3 및 NH3 소비율, 입자생성량을 비교하였다. 최적의 NO 입자 전환 반응 조건으로 반응기 온도 : 180℃, O3/NO 비율 : 8, NH3/NO 비율 : 1로 선정되었다. 최적의 SO2 입자 전환 반응 조건으로 NH3/SO2 비율이 1로 선정하였다. 혼합 실험에서 NO 및 SO2 단일 실험에서보다 O3, NH3 소비율이 높아졌으며 SO2 제거율은 단일 실험보다 약 2배 이상 높아지는 것을 확인하였다. 입자생성량은 단일 실험에서보다 약 10배 이상 증가하였다. 수분 10%를 주입하여 실험 진행하였을 때, SO2 제거율이 90% 이상으로 높아졌고 O3, NH3 소비율은 99% 이상을 보였으며 입자생성량도 60mg으로 증가하였다. 이를 바탕으로 적절한 수분의 주입이 입자전환 반응을 더 잘 진행되게 한다는 것을 확인하였다. 그다음, 미세먼지 전구물질 중 하나인 휘발성 유기화합물의 제거하기 위하여 상온에서 오존 촉매 산화 반응 실험을 진행하였다. 휘발성 유기화합물 중 메틸에틸케톤을 제거 대상으로 선정하였으며, 촉매로는 Zeolite Y(80), Mn/Zeolite Y(80), Spent FCC, Mn/Spent FCC, Mn-Cu/Spent FCC를 적용하여 실험을 진행하였다. MEK 제거율, 오존 제거율 및 COx 생성량을 비교한 결과, Mn-Cu/Spent FCC가 오존 촉매 산화 반응에서 촉매 활성이 높았으며, 장시간 MEK 제거효율도 가장 높은 효율을 유지하였다. 이를 바탕으로 폐 FCC 촉매가 전이금속을 담지 후 오존 촉매 산화 반응 촉매로 활용 가능하다는 것을 확인하였다.
In this study, in order to remove NO, SO2 and volatile organic compounds, which are precursors of fine dust, NO and SO2 are removed through particle conversion reaction, and volatile organic compounds were removed through ozone-catalyzed oxidation reaction at room temperature. First, by changing...
In this study, in order to remove NO, SO2 and volatile organic compounds, which are precursors of fine dust, NO and SO2 are removed through particle conversion reaction, and volatile organic compounds were removed through ozone-catalyzed oxidation reaction at room temperature. First, by changing various reaction conditions, the optimum conditions were obtained for each particle conversion reaction of NO and SO2, and then applied to a mixed particle conversion experiment to compare NO and SO2 removal rates, O3 and NH3 consumption rates, and particle generation. Reactor temperature: 180℃, O3/NO ratio: 8, and NH3/NO ratio: 1 were selected as the optimal NO particle conversion reaction conditions. The NH3/SO2 ratio was selected as 1 as the optimal SO2 particle conversion reaction condition. In the mixed experiment, it was confirmed that the O3 and NH3 consumption rate was higher than that in the NO and SO2 single experiment, and the SO2 removal rate was about 2 times higher than that of the single experiment. The amount of particle generation increased by about 10 times or more than in a single experiment. When the experiment was conducted by injecting 10% moisture, the SO2 removal rate increased to 90% or more, the O3 and NH3 consumption rates were more than 99%, and the amount of particle generation increased to 60mg. Based on this, it was confirmed that the injection of appropriate moisture makes the particle conversion reaction proceed better. Next, an ozone-catalyzed oxidation reaction experiment was conducted at room temperature to remove volatile organic compounds, which are one of the fine dust precursors. Among the volatile organic compounds, methyl ethyl ketone was selected as a target for removal, and the experiment was conducted by applying Zeolite Y, Mn/ZY(80), Spent FCC, Mn/Spent FCC, and Mn-Cu/Spent FCC as catalysts. As a result of comparing the MEK removal rate, the ozone removal rate, and the amount of COx generation, Mn-Cu/Spent FCC showed high catalytic activity in the ozone catalytic oxidation reaction. The MEK removal efficiency maintained the activity in a long time experiment. Based on this, it was confirmed that the waste FCC catalyst can be used as an effective ozone catalyst oxidation reaction catalyst after impregnating the transition metal.
In this study, in order to remove NO, SO2 and volatile organic compounds, which are precursors of fine dust, NO and SO2 are removed through particle conversion reaction, and volatile organic compounds were removed through ozone-catalyzed oxidation reaction at room temperature. First, by changing various reaction conditions, the optimum conditions were obtained for each particle conversion reaction of NO and SO2, and then applied to a mixed particle conversion experiment to compare NO and SO2 removal rates, O3 and NH3 consumption rates, and particle generation. Reactor temperature: 180℃, O3/NO ratio: 8, and NH3/NO ratio: 1 were selected as the optimal NO particle conversion reaction conditions. The NH3/SO2 ratio was selected as 1 as the optimal SO2 particle conversion reaction condition. In the mixed experiment, it was confirmed that the O3 and NH3 consumption rate was higher than that in the NO and SO2 single experiment, and the SO2 removal rate was about 2 times higher than that of the single experiment. The amount of particle generation increased by about 10 times or more than in a single experiment. When the experiment was conducted by injecting 10% moisture, the SO2 removal rate increased to 90% or more, the O3 and NH3 consumption rates were more than 99%, and the amount of particle generation increased to 60mg. Based on this, it was confirmed that the injection of appropriate moisture makes the particle conversion reaction proceed better. Next, an ozone-catalyzed oxidation reaction experiment was conducted at room temperature to remove volatile organic compounds, which are one of the fine dust precursors. Among the volatile organic compounds, methyl ethyl ketone was selected as a target for removal, and the experiment was conducted by applying Zeolite Y, Mn/ZY(80), Spent FCC, Mn/Spent FCC, and Mn-Cu/Spent FCC as catalysts. As a result of comparing the MEK removal rate, the ozone removal rate, and the amount of COx generation, Mn-Cu/Spent FCC showed high catalytic activity in the ozone catalytic oxidation reaction. The MEK removal efficiency maintained the activity in a long time experiment. Based on this, it was confirmed that the waste FCC catalyst can be used as an effective ozone catalyst oxidation reaction catalyst after impregnating the transition metal.
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