http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
분리기술 열역학 / 이산화탄소 - 피리딘과 이산화탄소 - 이소부티로니트릴계의 고압 상거동 측정
변헌수(Hun Soo Byun),곽철(Chul Kwak) 한국화학공학회 2000 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.38 No.3
The high-pressure binary phase equilibria data was obtained for pyridine and isobutyronitrile with supercritical carbon dioxide. Pressure-composition isotherms was obtained for the carbon dioxide-pyridine system at 35.0℃, 55.0℃, 75.0℃, 95.0℃, and 115.0℃ and pressure from 18 to 169 bar, and for the carbon dioxide-isobutyronitrile system at temperatures of 40.0℃, 60.0℃, 80.0℃, 100.0℃ and 120.0 ℃ and pressure of 18 to 144 bar. The solubilities of carbon dioxide for pyridine and isobutyronitrile decreases as the temperature increased at constant pressure. The mixture-critical points increased as the temperature increases. These two systems have continuous critical mixture curves that exhibit maximum in pressure at temperatures between the critical temperatures of carbon dioxide-pyridine and carbon dioxide-isobutyronitrile systems. The experimental results obtained in this study are modeled using the Peng-Robinson equation of state. A good fit of the data are obtained with Peng-Robinson equation of state using an adjustable mixture parameter for the carbon dioxide-pyridine system and two adjustable mixture parameters for the carbon dioxide-isobutyronitrile system.
변헌수,서홍삼,곽철 ( Hun Soo Byun,Hong Sam Suh,Chul Kwak ) 한국화학공학회 1992 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.30 No.5
The enthalpies of mixing for the binary systems of acetone-ethanol, acetone-water and ethanol-water and for the corresponding ternary liquid system of acetone-ethanol-water were measured at 298.2 K. The ternary enthalpies of mixing were estimated from the results of three binary systems by the Wilson equation and the NRTL equation, and the predicted values were found to be in a good agreement with the experimental data.
이산화탄소 - Tetralin의 이성분계 고압 상평형 연구
변헌수,김춘호,곽철 ( Hun Soo Byun,Choon Ho Kim,Chul Kwak ) 한국화학공학회 1992 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.30 No.3
High pressure binary vapor-liquid equilibria of carbon dioxide-tetralin system is investigated by using circulation type experimental apparatus which adopt microsampling technique with expended volume measuring system. The apparatus with this analyzing technique was tested by comparing the measured vaporliquid equilibrium data of carbon dioxide-tetralin at 344.2 K with those of Prausnitz et al. The binary phase equilibrium data of carbon dioxide-tetralin was obtained at temperatures of 313.2 K and 373.2 K in addition to that of 344.2 K and pressure from 5-6 ㎫ to near mixture critical pressure. The mixture density data are also obtained by calibrating the accurate volume of sampling loops. The solubility of carbon dioxide in liquid phase decreases and the solubility of tetralin in vapor phase increases as the temperatures increases at constant pressure.
이산화탄소 - α - Tetralone 및 이산화탄소 α - Tetralone - Tetralin 계의 고압상평형
변헌수,김춘호,곽철 ( Hun Soo Byun,Choon Ho Kim,Chul Kwak ) 한국화학공학회 1993 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.31 No.1
High pressure vapor-liquid equilibrium data for binary and ternary including supercritical carbon dioxide with tetralin and α-tetralone of aromatic hydrocarbon were measured. The binary vapor-liquid equilibrium and mixture density data of carbon dioxide-α-tetralone system were obtained at temperature of 313.2 K. 343.2 K and 373.2 K and pressure from 5 ㎫ to 30 ㎫. The liquid phase of the experimental ternary phase equilibrium data of carbon dioxide-α-tetralone-tetralin system was investigated at temperature of 343.2 K and pressure from 6 ㎫ to near mixture critical pressure.
이산화탄소와 α- Tetralol 과의 2성분계 고압상평형 측정
변헌수,김춘호,황영기,곽철 ( Hun Soo Byun,Choon Ho Kim,Young Gi Hwang,Chul Kwak ) 한국공업화학회 1996 공업화학 Vol.7 No.1
313.2K, 343.2K 그리고 373.2K 온도와 압력 6.0㎫에서 35.0㎫ 범위까지 이산화탄소와 방향족 탄화수소인 1,2,3,4-tetrahydro-1-naphthol(=α-tetralol)과의 상평형 실험을 각 온도에서 압력을 변화시키면서 수행하였다. 상평형 장치는 기상과 액상을 동시에 순환시키는 순환형이 사용되었으며, 실험분석은 미량시료채취법으로 시료를 채취하여 분석하였다. 이산화탄소와 α-tetralol계의 실험은 기상과 액상에서의 상평형데이터 및 혼합물 밀도의 측정이 실험조건별로 이루어 졌다. 실험결과 일정압력에서 이산화탄소의 용해도는 액상에서 온도가 증가함에 따라 감소하였고, 기상에서 α-tetralol의 용해도는 온도가 증가할수록 증가하였다. 혼합물 밀도는 압력이 증가할수록 기상, 액상 모두 혼합물 임계밀도쪽으로 접근해 감을 알 수 있었다. 또한 열역학적 해석을 위하여 3차 상태방정식인 Peng-Robinson식을 이용하여 이산화탄소 -α-tetralol계의 실험치를 상호 연관시켜 이론치를 계산하여 실험치와 비교한 결과 AAD가 K(1)의 경우 1.08%∼8.93%이고 K(2)의 경우는 45.71%∼72.34%이였다. The binary phase equilibrium experiments of carbon dioxide/1,2,3,4 α-tetrahydro-1-naphthol(α-tetralol) system were inducted to get phase equilibrium and mixture density data at 313.2K, 343.2K and 373.2K and within pressure ranges of 6.0 ㎫ to 35.0㎫. The phase equilibrium apparatus was type that circulated the vapor and liquid phase, the expened volume measuring system was adopted to microsampling technique for the analysis. The phase equilibrium and mixture density data were obtained for carbon dioxide/α-tetralol system from liquid and vapor phase. The mole fraction of carbon dioxide in liquid phase decreases and the mole fraction of α-tetralol in vapor phase increases at constant pressure according to increment of temperature, and both the densities of the vapor and liquid phase approach to the mixture critical density as the pressure increases at any temperature. For the thermodynamic analysis, the experimental data were correlated with Peng-Robinson equation in cubic equation of state and compared to theoretical values of carbon dioxide/α-tetralol system. The AAD result was in the range of 1.08%∼8.93% in the case of K(1), and was in the range of 45.71 %∼72.34% in the case of K(2).