Method and apparatus for inspissating solid-liquid mixtures by membrane technology
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United States of America Patent
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Sep 1, 1998
Grant Date -
N/A
app pub date -
Jun 24, 1996
filing date -
Oct 25, 1994
priority date (Note) -
Expired
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Abstract
To thicken remaining residues in ultrafiltration or microfiltration for clarifying fruit juices, systems having membrane module groups (1, 2, 3) connected in series are used in the cross flow process with a residue circuit. The groups (1, 2, 3) can be individually switched on or off in succession, depending upon the present thickening gradient of the residue in the residue feed stream. By operating a suitable number of groups (1, 2, 3), an operationally favorable working pressure is kept constant at the membrane modules until as great as possible a desired value of the thickening gradient of the residue is reached. In this way, an improvement of the overall capacity of filtration systems is achieved.
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