Liquid purification or separation – Casing divided by membrane into sections having inlet – Each section having inlet
Patent
1991-08-23
1992-04-28
Sever, Frank
Liquid purification or separation
Casing divided by membrane into sections having inlet
Each section having inlet
21032183, 2104971, B01D 6310
Patent
active
051086042
ABSTRACT:
Cartridges for use in ultrafiltration or reverse osmosis separation devices are formed by injection molding a generally tubular, smooth, seamless shell about a spirally-wrapped semipermeable membrane assembly. These cartridges can be used within traditional separation devices having pressure vessels of precise interior diameter, for which the cartridges are uniquely suited because they have cylindrical surfaces of true circular cross-section and close tolerances. The cartridges can also be created so as to incorporate integral pressure vessels and thus permit their use in separation processes without the need for surrounding supporting pressure vessels. A reaction injection molding process is shown which provides for substantial efficiencies in the overall manufacturing of semipermeable membrane separation cartridges of the spirally-wound variety.
REFERENCES:
patent: 3417870 (1968-12-01), Bray
patent: 3966616 (1976-06-01), Bray
patent: 4517085 (1985-05-01), Driscoll et al.
patent: 4548714 (1985-10-01), Kirwan, Jr. et al.
patent: 4600512 (1986-07-01), Aid
Desalination Systems Inc.
Sever Frank
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