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이산화탄소-피리딘과 이산화탄소-이소부티로니트릴계의 고압 상거동 측정
High Pressure Phase Behavior Measurement for Binary Carbon Dioxide-Pyridine and Carbon Dioxide-Isobutyronitrile Systems
여수대학교 화학공학과, 전남 550-749 1경남대학교 화학공학과, 경남 631-701
Department of Chemical Engineering, Yosu National University, Yosu, Chonnam 550-749, Korea 1Department of Chemical Engineering, Kyungnam University, Kyungnam 631-701, Korea
HWAHAK KONGHAK, June 2000, 38(3), 366-372(7), NONE
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Abstract
초임계 이산화탄소를 포함한 피리딘(pyridine)과 이소부티로니트릴(isobutyronitrile)에 대한 이성분계 상평형데이터를 얻기 위해 실험을 수행하였다. 이산화탄소-피리딘의 이성분계 압력-조성관계는 온도 35.0℃, 55.0℃, 75.0℃, 95.0℃ 그리고 115.0℃에서 실험하였으며, 이때 압력은 18-169bar 범위였다. 또한 이산화탄소 이소부티로니트릴계의 상거동 실험은 온도 40.0℃, 60.0℃, 80.0℃, 100.0℃ 그리고 120.0℃와 압력 18-144bar 범위에서 나타내었다. 이산화탄소-피리딘과 이산화탄소-이소부티로니트릴계에 대해 일정 압력에서 이산화탄소의 용해도는 온도가 증가함에 따라 감소함을 알 수 있으며, 또한 혼합물 임계점 압력은 온도가 증가함에 따라 증가하였다. 또한 순수성분 이산화탄소와 피리딘 및 이소부티로니트릴에 대해 증기압을 서로 연결하는 혼합물 임계곡선을 계산하였다. 본 연구에서 실험한 자료를 Peng-Robinson 상태방정식으로 모델링하였으며, Peng-Robinson 상태방정식에서 온도에 독립적인 파라미터를 이용하여 계산한 계산치와 실험치를 비교하여 나타내었으며, 그 결과 좋은 일치를 보였다.
The high pressure binary phase equilibria data was obtained for pyridine and isobutyronitrile with supercritical carbon dioxide. Pressure-composition isotherms was obatained for the carbon dioxide-pytidine 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℃_x000D_
, 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 temperature 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 wit 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.
Keywords
References
Byun HS, Hasch BM, McHugh MA, Fluid Phase Equilib., 115(1-2), 179 (1996)
Byun HS, Kim YS, Im JK, J. Korean Ind. Eng. Chem., 9(6), 924 (1998)
Byun HS, HWAHAK KONGHAK, 37(4), 568 (1999)
Byun HS, Jeon NS, Fluid Phase Equilib., 167(1), 113 (2000)
Kwak C, Byun HS, J. Korean Ind. Eng. Chem., 10(2), 324 (1999)
Hasch BM, McHugh MA, Fluid Phase Equilib., 64, 251 (1991)
Reid RC, Prausnitz JM, Poling BE, "The Properties of Gases & Liquids," 4th ed., McGraw-Hill, New York, NY (1987)
Vargaftik NB, "Handbook of Physical Properties of Liquid and Gases," Springer-Verlag, Berlin (1983)
Yaws CL, "Handbook of Vapor Pressure," Gulf Publishing, Houston, Texas, 1-3 (1994)
McHugh MA, Krukonis VJ, "Supercritical Fluid Extraction: Principles and Practice," 2nd ed., Butterworth, Stoneham, MA (1993)
Kirby CF, McHugh MA, Chem. Rev., 99(2), 565 (1999)
Peters CJ, Gauter K, Chem. Rev., 99(2), 419 (1999)
Peng DY, Robinson DB, Ind. Eng. Chem. Fundam., 15, 59 (1976)
Byun HS, Kim YS, Im JK, J. Korean Ind. Eng. Chem., 9(6), 924 (1998)
Byun HS, HWAHAK KONGHAK, 37(4), 568 (1999)
Byun HS, Jeon NS, Fluid Phase Equilib., 167(1), 113 (2000)
Kwak C, Byun HS, J. Korean Ind. Eng. Chem., 10(2), 324 (1999)
Hasch BM, McHugh MA, Fluid Phase Equilib., 64, 251 (1991)
Reid RC, Prausnitz JM, Poling BE, "The Properties of Gases & Liquids," 4th ed., McGraw-Hill, New York, NY (1987)
Vargaftik NB, "Handbook of Physical Properties of Liquid and Gases," Springer-Verlag, Berlin (1983)
Yaws CL, "Handbook of Vapor Pressure," Gulf Publishing, Houston, Texas, 1-3 (1994)
McHugh MA, Krukonis VJ, "Supercritical Fluid Extraction: Principles and Practice," 2nd ed., Butterworth, Stoneham, MA (1993)
Kirby CF, McHugh MA, Chem. Rev., 99(2), 565 (1999)
Peters CJ, Gauter K, Chem. Rev., 99(2), 419 (1999)
Peng DY, Robinson DB, Ind. Eng. Chem. Fundam., 15, 59 (1976)
