Microfiltration process and apparatus

Details Microfiltration process and apparatus Microfiltration process and apparatus

B - Operations, Transporting

01

D

182/15.3

B01D 61/14 (2006.01) B01D 61/22 (2006.01) B01D 63/06 (2006.01) B01D 71/02 (2006.01) C12H 1/07 (2006.01)

Patent

CA 2029231

The microfiltration of a turbid liquid, especially the microfiltration of a fermentation liquid to recover beer from a suspension containing excess yeast is controlled by measuring a flow velocity (v) and a pressure drop (.DELTA.p) and calculating from the flow velocity (v) and the pressure drop (.DELTA.p) by an apparatus-characteristic function F (v, .DELTA.p) containing the flow velocity (v) and pressure drop (.DELTA.p) as variables a value of concentration of the turbidity-producing solids in the retentate stream. The value of the concentration as thus determined forms an actual value which is compared with a setpoint value of the concentration to determine a difference which is used to control the rate at which the concentrate stream is withdrawn from the retentate stream.

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