Wyparki cienkowarstewkowe i krótkodrożne w przemyśle spożywczym

Przedstawiono wyniki badań nad wnikaniem ciepła i masy w aparatach cienkowarstewkowych i krótkodrożnych przeznaczonych do zagęszczania substancji nieodpornych termicznie. Przedstawiono również wyniki badań nad zastosowaniem wyparek krótkodrożnych i cienkowarstewkowych w wybranych technologiach.

A considerable amount of substances in food industry are unstable to heat due to their sensitive and complex structure. Therefore, particular conservative conditions must be observed when they are thickened or refined. These requirements are fulfilled by thin-film and short-path evaporators, which ow ing to their design and operation ensure short time of stay in zone of raised temperature and practically enable unrestricted possibility of pressure reduction. Results of investigation on heat and mass transfer in such type of apparatuses and systems combined with them have been presented as well as results of tests with use of thin-film evaporators in certain technologies. Besides, there is discussed the use of short-path evaporators in three-stage installations for obtention of high-percentage edible monoglycerides. The paper includes a survey of the most modern apparatus solutions in this field.