교반조에서 고체입자-액체간 물질전달

박상욱; 이종욱; 박문기

HWAHAK KONGHAK, Vol.29, No.2, 168-175, April, 1991

Export Citation

교반조에서 고체입자-액체간 물질전달

Mass Transfer in the Solid Particle-Liquid System with a Mechanically Agitated Vessel

박상욱, 이종욱, 박문기

초록

고체입자와 액체간의 물질전달계수를 교반조에서 측정하였다. 입자의 크기가 100㎛ 이하의 작은 범위에서 측정한 물질전달계수는 문헌에서 제시한 상관관계와 큰 차이를 나타내었으며 입자의 크기가 감소함에 따라 분자 확산이론식에 접근하였다. 미세한 입자영역의 격류 교반에서의 Kolmogorov 이론을 적용하여 고체입자-액체간 물질전달기구를 해석할 수 있었으며 입자크기가 100㎛보다 큰 범위에서 100㎛보다 작은 범위까지 적용되는 경험식을 Beek Bakker 식을 사용한 근사식으로부터 구하였으며, 이에 대한 결과식은 실험치와 평균편차 5.6%이내에서 잘 일치하였다.

The mass transfer coefficients between fine particles and liquids were measured in an agitated vessel. As the particle’s diameter decreased, the values of mass transfer coefficient deviated below the pre-vious correlation for large particles and approached the value of the theoretical molecular diffusion theory. The mass transfer with fine particles in the turbulent agitation was analysed with the conventional concept of a specific power group from the Kolmogorov theory. An approximate solution for the mass transfer in the wide range of experimental variables was also obtained by using the Beek-Bakker model with which the experimental data were in good agreement.

[References]

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[1] Hariott P, AIChE J., 8, 93 (1962)

[2] Nagata S, Nishikawa M, Proceedings of First Pacific Chemical Engineering Congress, Session, 18, 301 (1972)

[3] Levins DM, Glastonbury JR, Trans. Inst. Chem. Eng., 50, 132 (1972)

[4] Sano T, Yamaguchi N, Adachi T, J. Chem. Eng. Jpn., 7, 255 (1974)

[5] Yagi H, Iwazawa A, Sonobe A, Matsubara T, Hikita H, Ind. Eng. Chem. Fundam., 23, 153 (1984)

[6] Hixon AW, Baum SJ, Ind. Eng. Chem., 36, 528 (1944)

[7] Bakker JJ, Treybal RE, AIChE J., 6, 289 (1960)

[8] Sykes P, Gomezplata A, Can. J. Chem. Eng., 45, 189 (1967)

[9] Nienow AW, Can. J. Chem. Eng., 47, 248 (1969)

[10] Boon-Long S, Laguerie C, Couderc JP, Chem. Eng. Sci., 33, 813 (1978)

[11] Lal P, Kumar S, Upadhyay SN, Upadhyay YD, Ind. Eng. Chem. Res., 27, 1246 (1988)

[12] Asai S, Konishi Y, Sasaki Y, J. Chem. Eng. Jpn., 21, 107 (1988)

[13] Davis JJ, "Turbulent Phenomena," Academic Press, New York, p. 53 (1972)

[14] Rushton JH, CostichEW, Everett HJ, Chem. Eng. Prog., 46, 395 (1950)

[15] Zwirtering TN, Chem. Eng. Sci., 8, 244 (1958)

[16] Wichterle K, Chem. Eng. Sci., 43, 467 (1988)

[17] Reid RC, Plausnitz JM, Sherwood TK, "The Properties of Gases and Liquids," 3rd ed., McGraw-Hill, New York, p. 591 (1977)

[18] Cussler EL, Cambridge Univ. Press, New York, p. 118 (1984)

[19] Mydlarz J, Jones AG, Millan A, J. Chem. Eng. Data, 34, 124 (1989)

[20] Beek WJ, Bakker CAP, Appl. Sci. Res., A10, 241 (1961)

[21] Churchill SW, Usagi R, AIChE J., 18, 1121 (1972)

[22] Byers CH, King CJ, AIChE J., 13, 628 (1967)

[23] Hatanaka J, Chem. Eng. J., 28, 127 (1989)

[24] Asai S, Hatanaka J, Kimura T, Yoshizawa H, Ind. Eng. Chem. Res., 26, 483 (1987)

[25] Park SW, Yang SS, Kim JH, Asai S, HWAHAK KONGHAK, 27(6), 744 (1989)

[26] Park SW, Kim SS, Han SB, HWAHAK KONGHAK, 28(3), 327 (1990)

[27] Brian PLT, Hales HB, Sherwood TK, AIChE J., 15, 727 (1969)

[28] Miller DN, Ind. Chem. Process Res. Dev., 10, 365 (1971)

[29] Kikuchi K, Sugawara T, Ohashi H, Chem. Eng. Sci., 43, 2533 (1988)