Thin film flow-down type concentrating apparatus
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United States of America Patent
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Jul 23, 1996
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app pub date -
Feb 9, 1993
filing date -
Jun 27, 1991
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Abstract
A thin film flow-down type concentrating apparatus for concentrating a heat susceptible raw liquid with heated steam to high concentration without spoiling the flavor or deteriorating the quality by alternately laminating raw liquid plates and steam plates 20, in which the width of the raw liquid heating passage 18 is gradually narrowed from the raw liquid inlet to the concentrate outlet. As a result, if the volume of the raw liquid decreases due to evaporation and separation of the moisture in the raw liquid, scorching is prevented. Besides, by the steam generated from the raw liquid, in order to prevent increase of the flow velocity of the concentrate going toward the concentrate exit, the plate intervals of the raw liquid heating passage is gradually widened from the raw liquid inlet toward the concentrate outlet.
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