INVESTIGATION OF EFFECT OF INTERNAL CIRCULATION INSIDE DROPS IN DESIGNING PULSED SIEVE-PLATE EXTRACTION COLUMNS

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BAHMANYAR H.; SAFDARI S.J.; BASTANI D.; GHANNADI M.M.; SAELI M.A.

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Journal: Year:2000 | Volume:34 | Issue:3 (69) Page(s): 11-22

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Title

INVESTIGATION OF EFFECT OF INTERNAL CIRCULATION INSIDE DROPS IN DESIGNING PULSED SIEVE-PLATE EXTRACTION COLUMNS

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Abstract

One of the most important parameters in designing pulsed columns is overall mass transfer coefficient based on dispersed phase. Some of the proposed equations for calculation of mass transfer coefficient based on dispersed phase are: 1-Newman's equation or its modified one by substituting effective diffusivity or overall effective diffusivity instead of molecular diffusivity.2- Kronig and Brink's equation or its modified form. 3- Handlos and Baron's equation or its modified form. Different correlations have been proposed for effective diffusivity by Temos, Davies. Steiner, Johnson and Homielec. Lochiel and Calderbank. In this work column height is calculated at different operating conditions using above mentioncd mass transfer. Coefficient equations. Comparison of the column actual height with calculated height from above mentioned models shows that the average percentage deviation is too fluctuated. Calculated heights using equations of Newman, Kronig and Brink, Temos, Steiner are much higher than actual height and. calculated heights using Handlos and Baron's equation is less than actual height.Also results show that the average percentage deviation of height predicted by equations of Johnson - Hamielec and Lochiel - Calderbank from actual height is up to 34% and 64%, respectively. Finally results show that as internal circulation increases column internal decreases.

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APA: Copy

BAHMANYAR, H., SAFDARI, S.J., BASTANI, D., GHANNADI, M.M., & SAELI, M.A.. (2000). INVESTIGATION OF EFFECT OF INTERNAL CIRCULATION INSIDE DROPS IN DESIGNING PULSED SIEVE-PLATE EXTRACTION COLUMNS. JOURNAL OF FACULTY OF ENGINEERING (UNIVERSITY OF TEHRAN), 34(3 (69)), 11-22. SID. https://sid.ir/paper/14500/en

Vancouver: Copy

BAHMANYAR H., SAFDARI S.J., BASTANI D., GHANNADI M.M., SAELI M.A.. INVESTIGATION OF EFFECT OF INTERNAL CIRCULATION INSIDE DROPS IN DESIGNING PULSED SIEVE-PLATE EXTRACTION COLUMNS. JOURNAL OF FACULTY OF ENGINEERING (UNIVERSITY OF TEHRAN)[Internet]. 2000;34(3 (69)):11-22. Available from: https://sid.ir/paper/14500/en

IEEE: Copy

H. BAHMANYAR, S.J. SAFDARI, D. BASTANI, M.M. GHANNADI, and M.A. SAELI, “INVESTIGATION OF EFFECT OF INTERNAL CIRCULATION INSIDE DROPS IN DESIGNING PULSED SIEVE-PLATE EXTRACTION COLUMNS,” JOURNAL OF FACULTY OF ENGINEERING (UNIVERSITY OF TEHRAN), vol. 34, no. 3 (69), pp. 11–22, 2000, [Online]. Available: https://sid.ir/paper/14500/en

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