상압잔사유-펜탄계 추출공정 계산

백일현; 김춘호; 민병무; 황종식; 홍성선

Journal of the Korean Industrial and Engineering Chemistry, Vol.8, No.2, 220-229, April, 1997

Export Citation

상압잔사유-펜탄계 추출공정 계산

The Calculation of the Extraction Process for the Atmospheric Residue-pentane System

백일현, 김춘호, 민병무, 황종식, 홍성선

초록

펜탄용매를 이용하여 상압잔사유로부터 고급 경질 탄화수소의 추출실험을 수행하였다. 추출공정 계산에 앞서 복잡한 혼합물로 구성된 상압잔사유의 진비점을 계산하기 위하여 모사증류방법을 이용하였다. 추출공정 계산절차를 간단히 하기 위하여 재분류 방법을 이용하여 많은 성분을 포함하고 있는 상압잔사유를 성상이 유사한 몇 개의 가상성분으로 분류하였다. 상압잔사유-펜탄계 추출공정의 모사는 등온 플래시 방법에 기초를 두고 있으며, 계산과정 중 기상과 액상에서의 퓨개시티 계수를 계산하기 위하여 Peng-Robinson 상태방정식을 이용하였다. 복잡한 계산과정을 포함하고 있는 추출공정 모사에 비하여 실험치는 계산치와 잘 일치 하였다.

Extraction of valuable light hydrocarbon from atmospheric residue using pentane as a solvent has been carried out. The SIMDIS was used to calculate the true boiling point of atmospheric residue containing complex components before the modeling of the extraction process could by performed. In order to simplify the procedure, modeling was adopted and a lumping method was used, such that a large number of compounds were divided into similar component classes called pseudocomponents. The modeling of the extraction process of the atmospheric residue-pentane system was based on the isothermal flash calculation, and the Peng-Robinson equation of state was used to calculate the fugacity coefficient of vapor and liquid phase during calculation steps of modeling. The agreement between the experiments and the calculations was reasonable considering the uncertainties involved in modeling such complex processes.

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[1] Whitson CH, SPEJ, 23, 683 (1983)

[2] Baek IH, Kim CH, Kim DS, Kim SH, Hong SS, Lee DK, J. Korean Ind. Eng. Chem., 6(2), 175 (1995)

[3] Wallace D, Henry D, Pongar K, Zimmerman D, Fuel, 66, 44 (1987)

[4] ASTM 1160, Philadelphia, U.S.A. (1983)

[5] Worman JC, Green LE, Anal. Chem., 37, 1620 (1965)

[6] Paulaitis ME, Krukonis VJ, Reid RC, Rev. Chem. Eng., 1, 179 (1983)

[7] Mackay ME, Paulaitis ME, Ind. Eng. Chem. Fundam., 18, 149 (1979)

[8] Peng DY, Robinson DB, Ind. Eng. Chem. Fundam., 15, 59 (1976)

[9] Prausnitz JM, Lichtenthaler RN, DeAzevedo EG, Prentice Hall Inc., "Molecular Thermodynamics of Fluid Phase Equilibria," Englewood Cliffs, NJ, U.S.A. (1986)

[10] Hoffman EJ, Chem. Eng. Sci., 23, 957 (1968)

[11] Nutakki R, Ph.D. Dissertation, Stanford University, California, U.S.A. (1991)

[12] Smith RL, Watson KM, Ind. Eng. Chem., 29, 1408 (1937)

[13] Kay WB, Ind. Eng. Chem., 28, 1014 (1935)

[14] Riazi MR, Daubert TE, Ind. Eng. Chem. Res., 26, 755 (1987)

[15] Chase JD, Chem. Eng. Prog., 63 (1984)

[16] Lee BI, Kesler MG, AIChE J., 21, 510 (1975)

[17] Katz DL, Firoozabadi A, J. Pet. Technol., 31, 1649 (1978)