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Fouling of a plate heat exchanger used in ultra-high-temperature sterilization of milk

Published online by Cambridge University Press:  01 June 2009

Marc Lalande ,
Jean-Pierre Tissier  and
Georges Corrieu
Marc Lalande
Affiliation:
Laboratoire de Génie Industriel Alimentair, INRA, 59650 Villeneuve d'Ascq, France
Jean-Pierre Tissier
Affiliation:
Laboratoire de Génie Industriel Alimentair, INRA, 59650 Villeneuve d'Ascq, France
Georges Corrieu
Affiliation:
Laboratoire de Génie Industriel Alimentair, INRA, 59650 Villeneuve d'Ascq, France
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Summary

The composition and weight of deposit formed in all sections of an ultra-high-temperature milk sterilization plant were determined. Deposits formed in the preheating, heating and cooling sections during sterilization of pasteurized whole milk were analysed for dry matter, protein, fat and mineral contents. The weight and composition of components of the deposit varied in different sections of the plant and with the heating temperature. Two categories of deposit could be distinguished: one in the preheating section consisting of (w/w) protein 50%, minerals 40% and fat 1% and another in the heating section consisting of minerals 75%, proteins 15% and fat 3%. Concerning the rate of formation of these deposits, a comparison of the results with those obtained for pasteurization shows that fouling was more rapid during pasteurization of raw milk than during sterilization of previously pasteurized milk. Hypotheses concerning mechanisms of formation of protein deposition are discussed.

Type
Original Articles
Information
Journal of Dairy Research , Volume 51 , Issue 4 , November 1984 , pp. 557 - 568
Copyright
Copyright © Proprietors of Journal of Dairy Research 1984

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References

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