Liquid purification or separation – Processes – Liquid/liquid solvent or colloidal extraction or diffusing...
Patent
1991-06-18
1992-08-11
Sever, Frank
Liquid purification or separation
Processes
Liquid/liquid solvent or colloidal extraction or diffusing...
21032167, 21032174, 21032183, B01D 6118, B01D 6310, B01D 6316
Patent
active
051376377
ABSTRACT:
A spiral wound membrane module for use in separating at least part of one component from a feedstream, the module comprising: a generally-hollow rotatable shaft having a means for supplying a feedstream; a means capable of rotating the shaft about its axis of rotation; two permselective membranes affixed to the shaft and spaced from each other by a permeate spacer to provide a first membrane channel therebetween; a feed spacer disposed about the exterior surfaces of the permselective membranes such that a second membrane channel is formed when the permselective membranes are spirally wrapped around the shaft in overlapping relationship one upon the other to form a compact membrane roll; a means for removal of a permeate stream from the first membrane channel to the exterior of the membrane module; and a means for removal of a retentate stream from the second membrane channel to the exterior of the membrane module.
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patent: 4925557 (1990-05-01), Ahlberg, Jr. et al.
Exxon Chemical Patents Inc.
Sever Frank
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