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박태기,박건용,이병권 한국화학공학회 1985 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.23 No.6
Ammonia와 ethylene oxide로부터 이루어지는 ethanolamines 合成反應에서 反應速度常數 및 活性化에너지의 결정 등 反應速度式을 중심으로 한 ethanolamines제조과정을 回分式 실험에 의한 反應機構分析을 통해 고찰해 보았다. 반응을 2차의 非可逆 competitive consecutive reaction 이라고 가정하고, 28wt%의 ammonia 수용액을 사용하는 경우 反應速度 k₁은 20℃에서 1.235×10^(-3)ℓ/min·㏖, 35℃에서 3.243×10^(-3)ℓ/min·㏖, 50℃에서 7.784×10^(-3)ℓ/min·㏖, 活性化에너지는 약 11,500㎈/㏖로 구해졌다. 또 反應速度常數比가 K₂(=k₂/k₁)=8.51-0.051 C_W, K₃(=k₃/k₁)=14.81-0.196C_W로 구해져 물 濃度에 대한 1차 減少函數의 관계가 확인되었다. 反應速度 k₁과 速度常數比 k₂, k₃로부터 數値解析的으로 계산된 결과들은 實驗値와 매우 잘 一致하였다. A study on the reaction mechanism for the manufacture of ethanolamines from aqueous ammonia and ethylene oxide was carried out in a bench scale batch reactor. Rate constants and activation energy were determined by assuming that the reaction occurred in the manner of irreversible competitive consecutive second order reaction. In the case of 28% aqueous ammonia as a reactant, the reaction rate constants in the first step (k₁) were calculated to be 1.235×10^(-3)ℓ /min·㏖, 3.243×10^(-3)ℓ/min·㏖, and 7.784×10^(-3)ℓ/min·㏖ at 20 ℃, 35℃ and 50℃ respectively. The calculated activation energy was about 11,500 ㎈/㏖. Process simulation using these calculated results was found satisfactory in good accordance with the actual experimental results.
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박태기 한국막학회 2018 한국막학회 총회 및 학술발표회 Vol.2018 No.11
포항시의 재이용시설은 시설용량 100천m3/일로 전처리시설(UF), RO 여과시설, 폐수처리시설로 구성되어 있다. 총운영비(20년)는 181,992백만원(09년)으로 전력비 35.9%, 막 교체비 22.2%, 대수선비 14.1%, 약품비 13.7%, 인건비/제경비 8.5%, 경상수선비 3.6%, 보험료 2.0%로 구성되며, 지난 3년 동안 운영비 집행현황은 전력비 42.4%, 약품비 14.6%를 차지하였다. 원가관리 방향은 전력비 절감(전력 거래시장 참여, 전기요금 단가 차이를 이용한 부하 변동 운전, ESS 도입 및 운영)과 UF/RO 막 관리(세정력을 극대화하는 약품 및 세정, 내오염성 및 염제거 성능이 탁월한 RO 막의 선정)등을 설정, 실행하고 있다.
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박태기(Tae-Gi PARK),이을재(Eul-Jae LEE) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.10
Diesel locomotive operates the generator with the power from the diesel engine and it consists of the typical serial-hybrid system which operates the train wheels by converting its generated electric energy into the torque of DC (or AC) motor. However the technology of locomotives is only focused on trains' controlling power generation mechanism. Hence it is a current issue that the efficiency of its engine and its generator is relatively lower than that of auto vehicles'. Particularly since there are no proper equipment to measure the amount of fuel which is essentially necessary for the efficient use of fuel it is not easy to confirm the instant amount of fuel use as well as the exact average fuel consumption per an hour. Due to those difficulties it is urgent to develop the device that measures the fuel consumption. Plus this use of the developed measuring device allows the various and useful analysis relating to the fuel consumption and this could lead to establishing the efficient driving pattern regarding to fuel saving. This device consists of two flux (fuel level) measuring censors MCU for calculating the measured values the information recorder for saving measured values and the display device for indicating the fuel amount consumed during driving.
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[디젤엔진] 디젤엔진에서 soot 계측을 위한 레이저시트광의 적용
박태기(T.G. Park),이면준(M.J. Lee),이종숭(J.S. Lee),이중순(J.S. Lee),하종률(J.Y.Ha),정성식(S.S. Chung) 한국자동차공학회 1999 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Recently the laser sheet technique has been developed to improve our limited understanding of the in-cylinder diesel combustion. The technique is capable of high temporal and spatial resolution, so that it is proved to be an adequate combustion diagnostics to finding out exhaust emission formation. These temporal and spatial sequences of LIS(Laser Induced Scattering), LII(Laser Induced Incandescence) images were made which show the extent of the soot distribution within the optically accessible diesel engine. And LIS, LII signal images of soot distribution provide new insight into where and when soot occurs in a diesel engine.
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박건유,박태기,정문조 한국화학공학회 1983 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.21 No.5
상용공장에서 사용되는 관형반응기를 사용하여 CHClF₂의 열분해 반응에 대한 반응속도론적 연구를 하였다. CHClF₂는 열분해 반응에 의하여 C₂F₄와 HCl을 생성하며 C₂F₄는 polytetrafluoroethylene의 단량체로서 사용되고 있다. 반응이 층류구간에서 진행되므로 반응기 내부에 온도 및 속도의 구배가 존재하며 반경방향의 온도구배를 측정한 결과 2차 곡선과 잘 일치함을 알 수 있었다. 각 반응조건하에서 얻어진 전환율과 온도 및 속도구배를 사용하고 확산 및 가역반응을 고려하여 활성화 에너지와 Arrhenius상수를 계산하였으며 계산과정에서 computer 를 사용하였다. 계산 결과 γ_A = k₁[CHClF₂] - k₂[CF₂:] [HCl] (k₁= A_(1e)^(-E₁/RT), k₂= A_(2e)^(-E₂/RT) 로 표시되는 반응속도식에서 E₁= 48,951 ㎈/mole A₁= 0.3358 × 10^(15)/sec E₂= 5,117 ㎈/mole A₂= 0.1452 × 10^(14)㎤/mole·sec 의 값을 얻을 수 있었다. Kinetic study has been made on the pyrolysis of CHClF₂ using a tubular reactor of a commercial plant scale under the commercial plant conditions. CHClF₂ is decoposed to HCl and C₂F₄, which is used as a monomer of polytetrafluoroethylene. The pyrolysis proceeds in the laminar flow range, so temperature and velocity gradient exist in the reactor. The activation energies and Arrhenius constants were calculated by computer. Temperature gradient, velocity gradient, diffusion and reversibility of the reactions were considered in the calculation. The parameters were found to be E₁= 48,951 ㎈/mole, A₁= 0.3358 × 10^(15)/sec E₂= 5,117 ㎈/mole, A₂= 0.1452 × 10^(14)㎤/mole·sec in the following overall rate equation, where k₁= A₁Exp(-E₁/RT), k₂= A₂Exp(-E₂/RT)· γ_A = k₁[CHClF₂] - k₂[CF₂:] [HCl]
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레이저시트광을 이용한 가시화 디젤엔진에서의 soot 계측
이명준,박태기,정성식 동아대학교 생산기술연구소 2000 生産技術硏究所硏究論文集 Vol.5 No.1
Recently the laser sheet technique has been developed to improve our limited understanding of the in-cylinder diesel combustion. The technique is capable of high temporal and spatial resolution, so that it is proved to be an adequate combustion diagnostics to finding out exhaust emission formation. These temporal and spatial sequences of LIS(Laser Induced Scattering), LII(Laser Induced Incandescence) images were made which show the extent of the soot distribution within the optically accessible diesel engine. And LIS, LII signal images of soot distribution provide new insight into where and when soot occurs in a diesel engine.
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올레酸 메틸의 오존化 分解 : 不飽和 脂肪酸의 酸化(Ⅰ)
洪允命,趙英一,朴泰基 연세대학교 대학원 1972 延世論叢 Vol.9 No.1
The production of aldehydic materials from methyl oleate was investigated by ozonization technique. In the o2oni2ation, methanol was used as a solvent or diluent, and then ozonide was reduced chemically to obtain methyl azelaaldehydate and pelargonaldehyde, using zinc and acetic acid. From the experimental results, the solvent-ester ratio effected little on the production yield but the reduction temperature, which was preferred at about 30℃ was related significantly on the purity of the product. At the preferred conditions, the obtainable yield and purity was 74 and 87%, respectively. It is evidently suggested that the ozonolysis should he carried out in a short period, as soon as possible, in order to improve the yield and purity of product and avoiding contamination by the predicted side reactions.
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