BEHAVIOR OF GAS BUBBLES IN A CONCENTRIC CYLINDRICAL AIRLIFT COLUMN

Choi KH; Lee WK

Korean Journal of Chemical Engineering, Vol.9, No.2, 66-73, April, 1992

Using a light transmission optical probe, the effect of superficial gas velocity on bubble properties(bubble size, bubble rising velocity, bubble frequency and local gas holdup) at axial and radial positions was determined in the riser and the downcomer of a concentric cylindrical airlift reactor. The vertical bubble length, the bubble rising velocity and the bubble frequency at axis in the riser increased with increasing superficial gas velocity and the bed height. The radial distribution of the local gas holdup, vertical bubble length and bubble frequency in the riser and the downcomer were found to be non-uniform. The profiles of the local gas holdup, vertical bubble length and bubble rising velocity in the riser were shown as parabolic shapes. The local gas holdup, the vertical bubble length and the bubble frequency in the downcomer changed with superficial gas velocity and the distance from the top of the draft tube.

[References]

Lin CH, Fang BS, Wu CS, Fang HY, Kuo TF, Hu CY, Biotechnol. Bioeng., 18, 1557 (1976)
Chisti MY, Moo-Young M, Chem. Eng. Commun., 60, 195 (1987)
Mercer DG, Biotechnol. Bioeng., 23, 2421 (1981)
Lippert J, Adler I, Meyer HD, Lubbert A, Schugerl K, Biotechnol. Bioeng., 25, 437 (1983)
Koide K, Kurematsu K, Iwamoto S, Iwata Y, Horibe K, J. Chem. Eng. Jpn., 16, 413 (1983)
Glasgow LA, Erickson LE, Lee CH, Patel SA, Chem. Eng. Commun., 29, 311 (1984)
Choi KH, Kim JW, Lee WK, Korean J. Chem. Eng., 3(2), 127 (1986)
Miyahara T, Hamaguchi M, Sukeda Y, Takahashi T, Can. J. Chem. Eng., 64, 718 (1986)
Patel SC, Glasgow LA, Erickson LE, Lee CH, Chem. Eng. Commun., 44, 1 (1986)
Popovic M, Robinson CW, Chem. Eng. Sci., 42, 2811 (1987)
Popovic M, Robinson CW, Chem. Eng. Sci., 42, 2825 (1987)
Fan LS, Hwang SJ, Matsuura A, Chem. Eng. Sci., 39, 1677 (1984)
Erickson LE, Deshpande V, "Gas-Liquid Dispersion Characteristics in Airlift Fermentors," Pro. 6th Int. Frement, Symp., London, Pergamon Press, 533 (1980)
Weiland P, Ger. Chem. Eng., 7, 374 (1984)
Siegel MH, Merchuk JC, Schugerl K, AIChE J., 32, 1585 (1986)
Choi KH, Lee WK, Chem. Eng. Commun., 91, 35 (1990)
Hills JH, Trans. Inst. Chem. Eng., 52, 1 (1974)
Serizawa A, Kataoka I, Michiyoshi I, Int. J. Multiph. Flow, 2, 235 (1975)
Ueyama K, Morooka S, Koide K, Kaji H, Miyauchi T, Ind. Eng. Chem. Process Des. Dev., 19, 592 (1980)
Orazem ME, Fan LT, Erickson LE, Biotechnol. Bioeng., 21, 1579 (1979)

[Referenced By]

[1] Lin CH, Fang BS, Wu CS, Fang HY, Kuo TF, Hu CY, Biotechnol. Bioeng., 18, 1557 (1976)

[2] Chisti MY, Moo-Young M, Chem. Eng. Commun., 60, 195 (1987)

[3] Mercer DG, Biotechnol. Bioeng., 23, 2421 (1981)

[4] Lippert J, Adler I, Meyer HD, Lubbert A, Schugerl K, Biotechnol. Bioeng., 25, 437 (1983)

[5] Koide K, Kurematsu K, Iwamoto S, Iwata Y, Horibe K, J. Chem. Eng. Jpn., 16, 413 (1983)

[6] Glasgow LA, Erickson LE, Lee CH, Patel SA, Chem. Eng. Commun., 29, 311 (1984)

[7] Choi KH, Kim JW, Lee WK, Korean J. Chem. Eng., 3(2), 127 (1986)

[8] Miyahara T, Hamaguchi M, Sukeda Y, Takahashi T, Can. J. Chem. Eng., 64, 718 (1986)

[9] Patel SC, Glasgow LA, Erickson LE, Lee CH, Chem. Eng. Commun., 44, 1 (1986)

[10] Popovic M, Robinson CW, Chem. Eng. Sci., 42, 2811 (1987)

[11] Popovic M, Robinson CW, Chem. Eng. Sci., 42, 2825 (1987)

[12] Fan LS, Hwang SJ, Matsuura A, Chem. Eng. Sci., 39, 1677 (1984)

[13] Erickson LE, Deshpande V, "Gas-Liquid Dispersion Characteristics in Airlift Fermentors," Pro. 6th Int. Frement, Symp., London, Pergamon Press, 533 (1980)

[14] Weiland P, Ger. Chem. Eng., 7, 374 (1984)

[15] Siegel MH, Merchuk JC, Schugerl K, AIChE J., 32, 1585 (1986)

[16] Choi KH, Lee WK, Chem. Eng. Commun., 91, 35 (1990)

[17] Hills JH, Trans. Inst. Chem. Eng., 52, 1 (1974)

[18] Serizawa A, Kataoka I, Michiyoshi I, Int. J. Multiph. Flow, 2, 235 (1975)

[19] Ueyama K, Morooka S, Koide K, Kaji H, Miyauchi T, Ind. Eng. Chem. Process Des. Dev., 19, 592 (1980)

[20] Orazem ME, Fan LT, Erickson LE, Biotechnol. Bioeng., 21, 1579 (1979)