Riedel의 증기압식에 의한 편심계수의 상관

배효광; Hyo Kwang Bae

HWAHAK KONGHAK, Vol.38, No.3, 440-442, June, 2000

Export Citation

Riedel의 증기압식에 의한 편심계수의 상관

Correlation of Acentric Factor Based on the Riedel Vapor Pressure Equation

배효광^†

영남대학교 응용화학공학부, 경산 712-749

Hyo Kwang Bae^†

School of Chemical Engineering and Technology, Yeungnam University, 214-1 Dae-dong, Kyongsan 712-749, Korea

E-mail:

초록

열역학적 평형물성값과 수소물성값을 추산하는 경우 및 상태방정식에 주로 사용되는 편심계수가 Riedel의 증기압식을 사용하여 계산되는 방법을 제안하였다. Riedel 증기압식 중에 포함된 하나의 상수(D)와 임계점에서의 Riedel 정수(α_c)의 경험적인 상관관계가 확립되었다. 이 계산방법에서는 각 물질의 비점과 임계값 만이 필요하다. 본 연구에서 제안된 방법으로 계산된 편심계수와 문헌값이 평균절대편차(AAD %)는 409종의 순수물질에 대하여 2.1%이었으며 이 결과는 기존의 추산방법인 Edminster 방법과 Lee-Kesler 방법보다 월등히 우수하였고 Antoine의 증기압식을 사용한 Chen 등의 방법과 거의 동일한 결과를 나타내었다.

The vapor pressure equation proposed by Riedel is used for the estimation of acentric factor, which is widely used in the correlation of thermodynamic and transport properties and in the equation of state. A correlation of the fourth parameter D in Riedel vapor pressure equation to Riedel parameter at critical temperature α_c is empirically developed. the new method requires only the vapor pressure at normal boiling temperature and critical temperature and pressure of each component. The average absolute deviaton between the calculated and the observed acentric factor in literature is 2.1% for 409 compounds. This results compare with those of another methods, Edimster(3.6%), Lee-Kesler method(3.6%), and Chen et al. method(2.3%).

Keywords:Acentric Factor;Riedel Constant;Vapor Pressure Equation;Correlation

[References]

Pitzer KS, J. Am. Chem. Soc., 77, 3427 (1955)
Pitzer KS, Lippman DM, Curl RF, Huggins CM, Peterson DE, J. Am. Chem. Soc., 77, 3433 (1955)
Edimister WC, Petrol. Refining, 37, 173 (1958)
Lee BI, Kesler MG, AIChE J., 21, 510 (1975)
Chen DH, Dinivahi MV, Jeng CY, Ind. Eng. Chem. Res., 32, 241 (1993)
Reid RC, Prausnitz JM, Poling BE, "The Properties of Gases & Liquids," 4th ed., McGraw-Hill, New York, NY (1987)
Kudchadker AP, Alani GH, Zwollinski BZ, Chem. Rev., 68, 659 (1980)
Riedel L, Chem. Ing. Tech., 26, 83 (1954)
Passut CA, Danner RP, Ind. Eng. Chem. Proc. Des. Dev., 13, 365 (1973)
Henry WP, Danner RP, Ind. Eng. Chem. Proc. Des. Dev., 17, 373 (1978)
Kesler MG, Lee BI, Ind. Eng. Chem. Fundam., 18, 49 (1979)
Ambrose D, "Vapor-Liquid Critical Properties," NPL Report Chem. 107, National Physical Laboratory, Division of Chemical Standards, Teddington, England (1980)
Lin CT, Brule MR, Young FK, Starling KE, Chao J, Hydrocarb. Process., Aug., 117 (1980)
Lin CT, Brule MR, Young FK, Starling KE, Chao J, Hydrocarb. Process., Nov., 225 (1980)
Daubert TE, Danner RP, "Data Compilation: Table of Properties of Pure Compounds," AIChE, NY (1985)
Watanasiri S, Owens VH, Starling KE, Ind. Eng. Chem. Proc. Des. Dev., 24, 294 (1985)

[1] Pitzer KS, J. Am. Chem. Soc., 77, 3427 (1955)

[2] Pitzer KS, Lippman DM, Curl RF, Huggins CM, Peterson DE, J. Am. Chem. Soc., 77, 3433 (1955)

[3] Edimister WC, Petrol. Refining, 37, 173 (1958)

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

[5] Chen DH, Dinivahi MV, Jeng CY, Ind. Eng. Chem. Res., 32, 241 (1993)

[6] Reid RC, Prausnitz JM, Poling BE, "The Properties of Gases & Liquids," 4th ed., McGraw-Hill, New York, NY (1987)

[7] Kudchadker AP, Alani GH, Zwollinski BZ, Chem. Rev., 68, 659 (1980)

[8] Riedel L, Chem. Ing. Tech., 26, 83 (1954)

[9] Passut CA, Danner RP, Ind. Eng. Chem. Proc. Des. Dev., 13, 365 (1973)

[10] Henry WP, Danner RP, Ind. Eng. Chem. Proc. Des. Dev., 17, 373 (1978)

[11] Kesler MG, Lee BI, Ind. Eng. Chem. Fundam., 18, 49 (1979)

[12] Ambrose D, "Vapor-Liquid Critical Properties," NPL Report Chem. 107, National Physical Laboratory, Division of Chemical Standards, Teddington, England (1980)

[13] Lin CT, Brule MR, Young FK, Starling KE, Chao J, Hydrocarb. Process., Aug., 117 (1980)

[14] Lin CT, Brule MR, Young FK, Starling KE, Chao J, Hydrocarb. Process., Nov., 225 (1980)

[15] Daubert TE, Danner RP, "Data Compilation: Table of Properties of Pure Compounds," AIChE, NY (1985)

[16] Watanasiri S, Owens VH, Starling KE, Ind. Eng. Chem. Proc. Des. Dev., 24, 294 (1985)