Abstract
The volumetric mass transfer coefficient (kLa) for soybean oil hydrogenation was determined from various sizes of hydrogenators, 0.2 kg, 45.5 kg, 455 kg, 15454 kg and 29100 kg. The 0.2 kg bench hydrogenator was shown to simulate and to approximate the gas/ liquid mass transfer resistance of the production hydrogenator. The activation energy for the production simulation of 7.2 kcal/mole, indicating the hydrogenation is strongly influenced by mass transfer. A mathematic model was constructed for the prediction of kLa when the calculated power per unit volume of oil (P/V), the ratio of the oil height vs hydrogenator diameter (H/T) and the Raynold’s number of the agitator (Nre) are known. Production data obtained from the literature were used for testing the validity of the model; the maximum deviation was found to be 12%. Practical applications by using this model are also discussed.
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References
Roberts, G.W. in Catal. Org. Synth., (Conf.) 5th, edited by P.N. Rylander and H. Greenfield, Academic Press, New York, 1974, pp. 1–48.
Coenen, J.W.E., Chem. 16:709 (1978).
Sideman, S., O. Hortacsu and J.W. Fulton, Ind. Eng. Chem. 58: 32(1966).
Bern, L., J.O. Lidefelt and N.H. Schoon, JAOCS 53:463 (1976).
Andersson, K., M. Hell, L. Lowendahl and N.H. Schoon, JAOCS 51:171(1974).
Boucher, D.F., in Perry’s Chemical Engineers’ Handbook, 4th edn., McGraw-Hill, New York, 1963, chap. 5, p. 2.
Uhl, V.W., and J.B. Gray, Mixing: Theory and Practice, Vols. I and 2, Academic Press, New York, 1967.
Chen, A.H., D.D. McIntire and R.R. Allen, JAOCS 58:816, 1981.
Bates, R.L., P.L. Fondy and J.G. Fenic, in Mixing: Theory and Practice, Vol. 1, edited by V.W. Uhl and J.B. Gray, Academic Press, New York, 1967, p. 111.
Swern, D., Bailey’s Industrial Oil and Fat Products, Interscience, 3rd edn., New York, 1964, p. 793.
Swern, D., Bailey’s Industrial Oil and Fat Products, Interscience, 3rd edn., New York, 1964, p. 103.
Interesse, F.S., and G. D’Avella, Sci. Technol. Alimenti 4:231 (1974).
Johnstone, R.E., and M.W. Thring, Pilot Plants, Models and Scale-up Methods in Chemical Engineering, McGraw-Hill, New York, 1957, chap. 8.
Hocking, R.R., Biometrics 32:1 (1976).
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Chen, A.H., Mcintire, D.D., Gibson, P. et al. Investigation and modeling of mass transfer in soybean oil hydrogenators. J Am Oil Chem Soc 60, 1326–1330 (1983). https://doi.org/10.1007/BF02702110
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DOI: https://doi.org/10.1007/BF02702110