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Pilot 규모의 열분해 용융 소각 시스템에서의 열분해 및 연소 특성 연구
류태우(TaeU Yu),양원(Won Yang),박주원(JuWon Park),김봉근(BongKeun Kim),이기방(GiBang Lee),김희열(HiYeol Kim),박상신(SangShin Park),전금하(Keum Ha Jeon) 한국연소학회 2006 KOSCOSYMPOSIUM논문집 Vol.- No.-
A pilot scale (200㎏/hr) pyrolysis melting incineration system is designed and constructed in Korea Institute of Industrial Technology. The incineration process is composed of pyrolysis, gas combustion, ash melting, gas stabilization, waste heating boiler, and bag filter. For each unit process, experimental approaches have been conducted to find optimal design and operating conditions. Especially, a pyrolysis is very important process in that it is a way of energy recirculation and minimizing the waste products. This paper presents major results of the most efficient operating conditions in a pilot scale pyrolysis melting incinerator.
30 ㎏/hr 급 열분해 용융 소각로에서의 폐기물 열분해/연소/용융 특성 연구
류태우(Taeu Yu),김봉근,양원(Won Yang),전금하(Keum Ha Jeon),신동훈(Donghoon Shin),박상욱,임성진,김대성,이진호,황정호(Jeong Ho Hwang) 한국연소학회 2006 KOSCOSYMPOSIUM논문집 Vol.- No.-
A novel pyrolysis-melting incineration system of reduced scale (30 ㎏/hr) is designed and constructed in Korea Institute of Industrial Technology. The incineration process is composed of three parts: pyrolysis, gas combustion and ash melting processes. For each unit process, experimental and numerical approaches including reduced-scale cold/hot flow tests have been conducted to find optimal design and operating conditions. This paper presents major results of these approaches with brief descriptions on the pilot-scale incinerator (200 ㎏/hr) under construction and future research works.
김문원,육세진,류태우,Kim, Moon-Won,Yook, Se-Jin,Yu, Tae U 한국입자에어로졸학회 2018 Particle and Aerosol Research Vol.14 No.3
Recently, there has been much research on the effect of ultrafine dust on human body with increasing interest in the ultrafine dust. In the Republic of Korea, there are many old thermal power plants, and the amount of ultrafine dust emitted from the thermal power plants is reported to be about 14% of the total amount of domestic fine dust. Therefore, the amount of fine dust from the flue gas desulfurization facility in the thermal power plant needs be reduced. In this study, we made an experimental setup to simulate a flue gas desulfurization facility and analyzed the physical characteristics of the particles passing through a mist eliminator. Experiments were carried out to investigate the collection efficiency of the mist eliminator by using the Arizona Test Dust in a dry environment, and then spraying limestone slurry into the flue gas desulfurization system equipped with the mist eliminator to examine the size and morphology of limestone particles upstream and downstream of the mist eliminator. Cut-off size of the mist eliminator was formed at about $6{\mu}m$. The result of this study is expected to be helpful for designing an electrostatic precipitator for removing particles passing through the mist eliminator.
석회석 슬러리 입자 제거를 위한 전기집진기 포집효율 평가
이기혁,김문원,류태우,육세진,Lee, Gi-Hyuk,Kim, Moon-Won,Yu, Tae-U,Yook, Se-Jin 한국입자에어로졸학회 2019 Particle and Aerosol Research Vol.15 No.2
Recently, there has been much research on the effect of fine dust on human body with increasing interest in the fine dust. Thermal power plant, which is considered as one of the main sources of fine dust, is reported to be responsible for 14% of the total amount of domestic fine dust in the Republic of Korea. Therefore, dust collecting devices in the thermal power plant need to be improved. In this study, the electrostatic precipitator (ESP) was considered to substitute for a mist eliminator used in flue gas desulfurization facility. By considering real situation in the flue gas desulfurization facility, the collection efficiency of the ESP was evaluated by using the sprayed limestone slurry particles. The collection efficiency of the ESP was higher than that of the mist eliminator, showing the possibility of replacing the mist eliminator with the ESP in flue gas desulfurization facility.
민경원,김현종,한명근,류태우,김목순,주영환,Min, Kyoung-Won,Kim, Hyun-Jong,Han, M.K.,U, Yu-Tae,Kim, Mok-Soon,Chu, Young-Hwan 한국전기화학회 2008 한국전기화학회지 Vol.11 No.4
본 연구에서는 백금의 입자크기가 내구성과 활성에 미치는 영향을 고찰하였다. 상용 Pt/C의 열처리를 통해 백금 입자 크기를 $3.5{\sim}9\;nm$로 조절하였고, XRD와 TEM을 통해 이를 확인하였다. 촉매의 내구성 분석을 위해 가속 실험을 실시하였고, 촉매 활성 측정을 위해 산소환원반응 실험을 하였다. 백금의 입자크기를 증가시킬수록 내구성은 향상되었으나 촉매의 활성이 저하되었다. 즉 촉매의 내구성과 활성은 반비례관계가 성립된다는 것을 확인하였다. 그리고 저하된 촉매 활성과 내구성을 향상시키기 위해, 합금 촉매를 사용하였다.상용 Pt/C의 최대 전력 밀도는 약 $507.6\;mV/cm^2$ 이고, PtCo/C 합금촉매는 $585.8\;mV/cm^2$이었다. 전기화학적 표면적은 상용 Pt/C는 약 60%정도 감소하였고, PtCo/C 합금촉매는 약 24%정도의 감소율을 나타냈다. 따라서 백금의 입자 크기 조절과 합금화를 통해 백금의 내구성과 활성을 동시에 높일 수 있었다. The influence of the particle size of platinum(Pt) on the stability and activity was studied. The particle size of platinum was controlled in the range of $3.5{\sim}9\;nm$ by heat treatment of commercial Pt/C and confirmed by XRD and TEM. An accelerated degradation test was performed to evaluate the stability of platinum catalysts. Oxygen reduction reaction was monitored for the measurement of activity. As increasing the Pt particle size, the stability of Pt/C electrode was enhanced and the activity was reduced. It was confirmed that the stability of Pt/C electrode was in inverse proportion to the activity. PtCo/C alloy catalyst was used to improve the activity and stability of large-sized platinum particle. The maximum power density of commercial Pt/C was $507.6\;mV/cm^2$ and PtCo/C alloy catalyst was $585.8\;mV/cm^2$. The decrement of electrochemical surface area showed Pt/C(60%) and PtCo/C alloy catalyst(24%). It was possible to enhance both of stability and activity of catalyst by the combination of particle size control and alloying.
김성준(S.J.Kim),류태우(T.U.Yu),김세원(S.W.Kim) 한국자동차공학회 1995 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1995 No.11_2
Monolithic three-way catalysts were aged with different mileages on an engine dynamometer. These catalysts were subsequently evaluated on an engine dynamometer to examine the effects of air/fuel ratio set point, temperature, and air/fuel ratio amplitude and frequency on the conversion efficiencies for NOx, CO, and HC. For this test, dual oxygen sensor method, which utilizes a comparison. between an upstream oxygen sensor and oxygen sensor placed downstream of the catalyst. is used under steady state operating conditions. It is found that the amplitude and frequency of air/fuel ratio closed-loop control system affects the NOx. CO, and HC conversion efficiencies greatly. In this study, a new parameter which can be used as a measure of catalyst performance is proposed, and it is found that this parameter qualitatively matches well with the HC conversion efficiency of catalyst.<br/>
함영국(Y.K. HAHM),류태우(T.V. YU),서병설(B.S. SUH),이양희(Y.H. YEE),최준영(J.Y. CHOI) 대한전자공학회 1992 대한전자공학회 학술대회 Vol.1992 No.10
The purpose of this paper is to perform the engine driving well with controling the IAC (Idle Air Control) valve which controls the demand-air when the abrupt increasing or decreasing and the idling, the fuel by controlling the injector, and the spark timing. This plant is the complex system because this should be controlled each other and each one affects other. We have controlled this system effectively by using Personal Computer in order to reduce the exhaust gas and improve the engine performance.