Experimental and theoretical investigation of a new multistage countercurrent melt crystallizer with inclined sieve plates

Shui Wang; Guojing Zhao; Yizhen Du; Yixin Qu

Korean Journal of Chemical Engineering, Vol.32, No.6, 1151-1157, June, 2015

DOI10.1007/s11814-014-0312-z Export Citation

Experimental and theoretical investigation of a new multistage countercurrent melt crystallizer with inclined sieve plates

Shui Wang, Guojing Zhao, Yizhen Du¹, and Yixin Qu^{1, †}

Beijing Key Laboratory of Membrane Science and Technology, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China
¹Shandong Academy of Environmental Science, Jinan 250013, P. R. China

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A new multistage countercurrent melt crystallizer with sieve plates is proposed that combines the advantages of the TNO column crystallizer and the inclined column crystallizer. With the naphthalene-indene solid solution system, the purification process of organic materials in the new multistage countercurrent melt crystallizer with sieve plates under total reflux was investigated. Two of the influencing factors on the separation and purification performance in the new multistage countercurrent melt crystallizer with sieve plates were crystal settling velocity and crystal breakage, which were controlled by stirring speed, the sieve plates, the angle of the sieve plates, the diameter of the pores, particle sedimentation area, and the number of plates. The results of this study show that the optimum stirring speed was determined to be 20 rpm, sieve plates can obviously increase the separation and purification effect, the optimum angle of the sieve plates was determined to be 45o, the optimum diameter of the pores was determined to be 8 mm, the optimum particle sedimentation area was determined to be 0.5 r, and two plates in the crystallizer were shown to be the best.

Keywords:Melt Crystallizer;Sieve Plates;Separation;Purification

[References]

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[1] Devyatykh GG, Elliev YE, Gur’yanov AN, Dokl. Acad. Nauk SSSR, 204, 917 (1972)

[2] Devyatykh GG, Vorotyntsev VM, Malyshev VM, Karakisn VB, Dokl. Acad. Nauk SSSR, 297, 396 (1987)

[3] Li Q, Yi Z, Sun X, Su M, Korean J. Chem. Eng., 27(2), 619 (2010)

[4] Myasnikov SK, Uteshinsky AD, Kulov NN, Theor. Found. Chem. Eng., 41, 124 (2007)

[5] Arkenbout GJ, Kuijk AV, Smit WM, Chem. Ind., 3, 139 (1973)

[6] Matsuoka M, Takiyama H, Soutome O, Chem. Eng. Res. Des., 75(2), 206 (1997)

[7] Boycott AE, Nature, 104, 532 (1920)

[8] Funakoshi K, Uchida H, Takiyama H, Matsuoka M, J. Cryst. Growth, 237, 2251 (2002)

[9] Chen LA, Li J, Matsuoka M, Ind. Eng. Chem. Res., 45(8), 2818 (2006)

[10] Albertins R, Powers JE, AIChE J., 15, 554 (1969)

[11] Henry JD, Powers JE, AIChE J., 16, 1055 (1970)

[12] Gates WC, Powers JE, AIChE J., 16, 648 (1970)

[13] Matsuoka M, Fukuda T, Takagi Y, Takiyama H, J. Chem. Eng. Jpn., 28(5), 562 (1995)

[14] Matsuoka M, Fukuda T, Takagi Y, Takiyama H, J. Cryst. Growth, 166, 1035 (1996)

[15] Matsuoka M, Sumitani A, J. Chem. Eng. Jpn., 21, 6 (1988)

[16] Matsuoka M, Ohishi M, Kasama S, J. Chem. Eng. Jpn., 19, 181 (1986)

[17] Bolsaitis P, Chem. Eng. Sci., 24, 1813 (1969)

[18] Moyers CG, Olson JH, AIChE J., 20, 1118 (1974)

[19] Player MR, Ind. Eng. Chem. Process Des. Dev., 8, 210 (1969)