Flow reversal of internal circulation membrane separation systems
OwnerNadav Efratyinventor
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Abstract
The present invention provides a membrane separation process comprising a pressurized feed of solution that is combined with a repressurized, internal circulation of a concentrated solution. This combined flow of feed solution and concentrated solution may be introduced to either end of pressurized vessels containing membranes and this direction of flow is periodically reversed. This combination of repressurized internal circulation and reversal of the direction of flow allows for manipulations of concentration gradients both along the length of membranes in the pressure vessel and concentration gradients within the boundary layers at the surface of the membranes
Claims8
A method for separating a feed solution into a volume with higher concentration of soluble and/or insoluble material and a volume of lower concentration of soluble and/or insoluble material, the method comprising of:
- a. Pressurized feed of a solution;
- b. circulation system for repressurizing from 0% to 100% of a separated higher concentration solution and combining it with the pressurized feed solution;
- c. control system for directing the combined flow to either end of a pressurized vessel that contains membrane modules used to split a solution into two streams:
- one with a higher concentration of a soluble and/or insoluble material and one with a lower concentration of a soluble and/or insoluble material;
Dependencies are inferred from the claim text.