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US 4,647,380 AGranted
Annular dual membrane permselective device and method
OwnerPurnendu K. Dasguptainventor
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Abstract
A permselective assembly for the selective transport of a species of interest across a semipermeable ion, exchange barrier and a method of operating the same are disclosed. The assembly includes an inner tube of a permselective material disposed within the inner volume of an outer tube of a permselective material forming an annular channel therebetween. This annular dual tube arrangement decreased the hold up volume of the outer tube and increases efficiency of transport of the species of interest.
Claims32
A permselective assembly comprising:
- (a) an outer tube comprised of a permselective material;
- (b) an inner tube defining a central channel comprised of a permselective material concentrically disposed within said outer tube forming an annular gap and an annular channel therebetween;
- and
- (c) an external jacket comprised of a substantially nonpermeable material enclosing at least an intermediate length of said outer tube and defining an outer channel therebetween, said jacket having a fluid inlet and a fluid outlet.
1 more element
Dependencies are inferred from the claim text.