| 摘要 |
Apparatus and method for fractionating a liquid mixture into a plurality of liquid fractions whose components have different velocities. A rotating cylindrical assembly (A) has inner and outer shells (I, O) defining therebetween a tubular gap (G). One shell includes a porous structure (21) for permeation therethrough of one or more of the liquid fractions and to resist radial inward flow of the remainder. The cylindrical assembly (A) is rotated at a speed effective to impart sufficient centrifugal force to the liquid fractions to maintain one such fraction within the gap (G) while compelling flow of the other liquid fraction radially inwardly through the porous structure. The invention includes a porous structure (21) in both the inner and outer shells (I, O) to allow for levitation of one fraction of the mixture between such structures while a wash of solution bearing beneficial components is flowed radially inwardly therethrough. |
