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Difference between revisions of "Drying"
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=== Air drying === | === Air drying === | ||
Process that involves the evaporation of liquids under an oxygen atmosphere. The exchange of oxygen with low humidity accelerates this process but may lead to an (unwanted) oxidation of the product. | Process that involves the evaporation of liquids under an oxygen atmosphere. The exchange of oxygen with low humidity accelerates this process, but may lead to an (unwanted) oxidation of the product. | ||
=== Nitrogen drying === | === Nitrogen drying === | ||
Process that involves the evaporation of liquids under an nitrogen atmosphere. The exchange of nitrogen accelerates this process. Since nitrogen is an inert gas unwanted reactions such as oxidation of the product are avoided. | Process that involves the evaporation of liquids under an nitrogen atmosphere. The exchange of nitrogen accelerates this process. Since nitrogen is an inert gas, unwanted reactions such as oxidation of the product are avoided. | ||
=== Freeze drying === | === Freeze drying === | ||
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=== Thermal drying === | === Thermal drying === | ||
Process that involves the vaporisation/evaporation of liquids through the application of heat under different atmospheres. With increasing application of heat the process can be accelerated. Very high temperatures may lead to unwanted reactions of the product. Examples for thermal drying technologies are flash (pneumatic) drying, radiative drying, solar drying, drum drying, and supercritical drying. | Process that involves the vaporisation/evaporation of liquids through the application of heat under different atmospheres. With increasing application of heat, the process can be accelerated. Very high temperatures may lead to unwanted reactions of the product. Examples for thermal drying technologies are flash (pneumatic) drying, radiative drying, solar drying, drum drying, and supercritical drying. | ||
=== Vacuum drying === | === Vacuum drying === | ||
Process that involves the evaporation of | Process that involves the evaporation of liquids under a vacuum atmosphere. The vacuum atmosphere allows the evaporation of liquids at lower temperatures than under atmospheric pressure. | ||
== Product == | == Product == | ||