Comparison between Melt Crystallizations with Indirect and Direct Contact Cooling Methods

Kwang-Joo Kim; Alfons Mersmann

Journal of Industrial and Engineering Chemistry, Vol.5, No.3, 204-211, September, 1999

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Comparison between Melt Crystallizations with Indirect and Direct Contact Cooling Methods

Kwang-Joo Kim^†, and Alfons Mersmann¹

Chemical Process & Engineering Center, Korea Research Institute Chemical Technology, Korea
¹Department B of Chemical Engineering, Technical University of Munich, Germany

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The effects of cooling mode on the crystal nucleation and growth kinetics have been explored through melt crystallization operations. Comparison between direct and indirect contact cooling methods has been made for the melt crystallization of n-dodecanol from n-decanol-n-dode-canol mixture. Direct contact coolants like air and water were investigated. The crystallizers were capable of being operated batchwise and continuously. The effect of operating modes on the crystallization kinetics was also studied. It was shown that crystal growth rates in all modes increase with the square of the supersaturation. The presence of direct contact coolants does not affect the nucleation characteristic due to their immiscibility and behavior with the melt. The comparison between crystallization kinetics for cooling modes was carried out by Mersmann''s criteria.

Keywords:melt crystallization;direct contact cooling;nucleation;crystal growth;crystal growth controlled step

[References]

Wynn NP, Chem. Eng. Prog., Mar., 52 (1992)
Wintermantel K, Wellinghoff G, Int. Chem. Eng., 34, 17 (1994)
Jancic SJ, The Sulzer MWB Fractional Crystallization System, Technical Review Sulzer, Winterthur, Switzerland (1986)
Albertines R, Ph.D. Dissertation, Univ. Michigan, Ann Arbor (1967)
Ozoguz MY, Ph.D. Dissertation, Univ. Bremen, Germany, VDI-Fortschritt-Berichte, Series 3, No. 271, VDI-Verlag, Dusseldorf (1992)
Yamazaki Y, Watanuma Y, Toyokura K, Kag. Kog. Ronbunshu, 12, 610 (1986)
Power JM, Bennet RB, Ind. Eng. Chem., 47, 1096 (1955)
Toyokura K, Hirawa I, Imada S, Irie Y, Develop. in Cryst. Eng., Waseda Univ., Tokyo (1992)
Barduhn AJ, Chem. Eng. Prog., 71, 80 (1975)
Wiegandt HF, Madani A, Hariott P, Desalination, 67, 107 (1987)
Kim KJ, Mersmann A, Chem. Eng. Res. Des., 75, 179 (1996)
Kim KJ, Mersmann A, J. Chem. Eng. Jpn., 31(4), 527 (1998)
Kim KJ, Lee JM, Mersmann A, Sep. Sci. Technol., 31(13), 1859 (1996)
Schleiden T, Offermann H, CGOM 4, 222 (1997)
Nyvlt J, J. Cryst. Growth, 3-4, 377 (1968)
Garside J, Mersmann A, Nyvlt J, Measurement of Crystal Growth Rates, European Federation of Chem. Eng., Working Party on Crystallization, Druckhaus Deutsch, Munich (1990)
Randolph AD, Larson MA, Theory of Particulate Processes, Academic Press, San Diego, CA (1988)
Mersmann A, Chem. Eng. Res. Des., 74(7), 812 (1996)
Mersmann A, Angerhofer M, Gutwald T, Sangl R, Wang S, Sep. Technol., 2, 85 (1992)
Mersmann A, J. Cryst. Growth, 147, 181 (1995)
Nore P, Mersmann A, Chem. Eng. Sci., 48, 3083 (1993)
Nyvlt J, Solid-Liquid Phase Equilibria, Elsevier Scientific Publishing Co., Amsterdam, The Netherlands (1964)
Mersmann A, Crystallization Technology Handbook, Marcel Dekker, Inc., New York (1994)
Murata Y, Honda T, J. Cryst. Growth, 39, 315 (1977)
Jansens PJ, Ph.D. Thesis, Technical University Delft (1994)

[Related Articles]

[1] Wynn NP, Chem. Eng. Prog., Mar., 52 (1992)

[2] Wintermantel K, Wellinghoff G, Int. Chem. Eng., 34, 17 (1994)

[3] Jancic SJ, The Sulzer MWB Fractional Crystallization System, Technical Review Sulzer, Winterthur, Switzerland (1986)

[4] Albertines R, Ph.D. Dissertation, Univ. Michigan, Ann Arbor (1967)

[5] Ozoguz MY, Ph.D. Dissertation, Univ. Bremen, Germany, VDI-Fortschritt-Berichte, Series 3, No. 271, VDI-Verlag, Dusseldorf (1992)

[6] Yamazaki Y, Watanuma Y, Toyokura K, Kag. Kog. Ronbunshu, 12, 610 (1986)

[7] Power JM, Bennet RB, Ind. Eng. Chem., 47, 1096 (1955)

[8] Toyokura K, Hirawa I, Imada S, Irie Y, Develop. in Cryst. Eng., Waseda Univ., Tokyo (1992)

[9] Barduhn AJ, Chem. Eng. Prog., 71, 80 (1975)

[10] Wiegandt HF, Madani A, Hariott P, Desalination, 67, 107 (1987)

[11] Kim KJ, Mersmann A, Chem. Eng. Res. Des., 75, 179 (1996)

[12] Kim KJ, Mersmann A, J. Chem. Eng. Jpn., 31(4), 527 (1998)

[13] Kim KJ, Lee JM, Mersmann A, Sep. Sci. Technol., 31(13), 1859 (1996)

[14] Schleiden T, Offermann H, CGOM 4, 222 (1997)

[15] Nyvlt J, J. Cryst. Growth, 3-4, 377 (1968)

[16] Garside J, Mersmann A, Nyvlt J, Measurement of Crystal Growth Rates, European Federation of Chem. Eng., Working Party on Crystallization, Druckhaus Deutsch, Munich (1990)

[17] Randolph AD, Larson MA, Theory of Particulate Processes, Academic Press, San Diego, CA (1988)

[18] Mersmann A, Chem. Eng. Res. Des., 74(7), 812 (1996)

[19] Mersmann A, Angerhofer M, Gutwald T, Sangl R, Wang S, Sep. Technol., 2, 85 (1992)

[20] Mersmann A, J. Cryst. Growth, 147, 181 (1995)

[21] Nore P, Mersmann A, Chem. Eng. Sci., 48, 3083 (1993)

[22] Nyvlt J, Solid-Liquid Phase Equilibria, Elsevier Scientific Publishing Co., Amsterdam, The Netherlands (1964)

[23] Mersmann A, Crystallization Technology Handbook, Marcel Dekker, Inc., New York (1994)

[24] Murata Y, Honda T, J. Cryst. Growth, 39, 315 (1977)

[25] Jansens PJ, Ph.D. Thesis, Technical University Delft (1994)