Process and unit for clarification of liquids
AssigneeBucher-Guyer AG Maschinenfabrik
InventorEduard Hartmann
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Abstract
In a process for clarification of liquids, especially raw juice by continuous crosscurrent filtration, which for improvement of the filtration output is run with a high solid portion in the retentate circulating circuit, during the starting phase an additional retentate discharge from the retentate circulating circuit takes place, which is relatively small in comparison with the retentate discharge taking place during the stationary operating phase. By this measure, a further improvement of the filtration output is achieved.
Claims18
Process for clarification of liquids, especially raw juice from plant products and products produced by bioengineering, by continuous crosscurrent filtration, especially microfiltration and ultrafiltration with a high solid portion in the retentate circulating circuit, characterized in that during the starting phase at least one additional retentate discharge from the retentate circulating circuit takes place, which is relatively small in comparison with retentate discharge occurring during the stationary operating phase sufficient to renew the retentate in the retentate circulating circuit during the starting phase for improving filtration output.
An apparatus for the clarification of liquids, particularly raw juices from plant products and products produced by bioengineering, comprising a cross current filtration device having at least one stage and having a retentate side and a permeate side, a retentate circuit connected to said retentate side of said cross current filtration device, a source of raw juice connected to said retentate circuit, a first retentate discharge pipe connected to said retentate circuit adjacent its outlet from the cross current filtration device to remove retentate during a stationary operating phase, a second retentate discharge pipe connected to said retentate circuit downstream of said first retentate discharge pipe, the cross sectional area of said first retentate discharge pipe being several times greater than that of the second retentate discharge pipe such that a limited amount of retentate is removed through said second retentate pipe during the starting phase sufficient to renew the retentate in the retentate circulating circuit during the starting phase for improving filtration output.
Dependencies are inferred from the claim text.